AccountingChangesAndErrorCorrectionsDisclosuresEntire footnote of the nature and amount of prior period errors that had previously been considered immaterial and which are being corrected in the current fiscal year.AccountingChangesNo commentary yet[Level 1 Text Block]us-gaap:AccountingChangesAndErrorCorrectionsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingChangesAndErrorCorrectionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-acec-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-44.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-44.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/44-rules-def.xml21Accounting Changes and Error Corrections Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountingChangesDisclosuresEntire footnote for accounting changes.AccountingChangesNo commentary yet[Level 1 Text Block]us-gaap:AccountingChangesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingChangesAndErrorCorrectionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-acec-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1250.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1250.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1250-rules-def.xml9Accounting Changes Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAndAccruedLiabilitiesRollUpRoll up of details of combined current and noncurrent accounts payable and accrued liabilities. (For unclassified balance sheets)PayablesAccrualsNo commentary yet[Roll Up]us-gaap:ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-543.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-543.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/543-rules-def.xml11Accounts Payable and Accrued Liabilities [Roll Up] (Current and Noncurrent Combined)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAndAccruedLiabilitiesDisclosureEntire footnote for accounts payable and accrued liabilities at the end of the reporting period.PayablesAccrualsNo commentary yet[Level 1 Text Block]us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-145.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-145.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/145-rules-def.xml9Accounts Payable and Accrued Liabilities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAndAccruedLiabilitiesCurrentRollUpRoll up of details of current portion of accounts payable and accrued liabilities.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-542.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-542.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/542-rules-def.xml78Accounts Payable and Accrued Liabilities, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentEntire footnote for current accounts payable and accrued liabilities at the end of the reporting period.PayablesAccrualsNo commentary yet[Level 1 Text Block]us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1223.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1223.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1223-rules-def.xml18Accounts Payable and Accrued Liabilities, Current, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAndAccruedLiabilitiesNoncurrentRollUpRoll up of details of noncurrent portion of accounts payable and accrued liabilities.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-545.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-545.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/545-rules-def.xml2Accounts Payable and Accrued Liabilities, Noncurrent [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureNoncurrentEntire footnote for noncurrent accounts payable and accrued liabilities at the end of the reporting period.PayablesAccrualsNo commentary yet[Level 1 Text Block]us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureNoncurrentTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1224.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1224.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1224-rules-def.xml4Accounts Payable and Accrued Liabilities, Noncurrent, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableAndOtherAccruedLiabilitiesCurrentRollUpRoll up of details of current portion of accounts payable and other accrued liabilities.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1258.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1258.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1258-rules-def.xml2Accounts Payable and Other Accrued Liabilities, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsPayableDetailsDisclosure of the details of current accounts payable.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-150.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-150.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/150-rules-def.xml3Accounts Payable, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsReceivableNetRollUpRoll up of details of accounts receivable, net.ReceivablesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-812.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-812.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/812-rules-def.xml21Accounts Receivable, Net [Roll Up] (Unclassified balance sheet)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccountsNotesLoansAndFinancingReceivableDisclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. US GAAP XBRL Taxonomy documentation says, Presentation is categorized by current, noncurrent and unclassified receivables. Not sure what that means.ReceivablesNo commentary yet[Roll Up]us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-73.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-73.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/73-rules-def.xml8Accounts, Notes, Loans and Financing Receivable [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccruedIncomeTaxesRollUpRoll up of details of accrued income taxes.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-546.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-546.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/546-rules-def.xml2Accrued Income Taxes, Current and Noncurrent [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccruedLiabilitiesDisclosure of the roll up of details of accrued liabilities. (Unclear if this is intended for combined current and noncurrent or should be used if an economic entity has only current accrued liabilities.)PayablesAccrualsNo commentary yet[Roll Up]us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-149.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-149.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/149-rules-def.xml11Accrued Liabilities [Roll Up] (Unsure if combined current/noncurrent or current only)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccruedLiabilitiesAndOtherLiabilitiesRoll up of details of accrued liabilities and other liabilities. This appears to be for an unclassified balance sheet where current and noncurrent items are not distinguished.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1259.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1259.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1259-rules-def.xml36Accrued Liabilities and Other Liabilities [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccumulatedOtherComprehensiveIncomeLossDisclosure of the components of accumulated other comprehensive income (loss).EquityNo commentary yet[Roll Forward]us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-225.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-225.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/225-rules-def.xml23Accumulated Other Comprehensive Income (Loss), by Equity Component [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureReclassificationOutOfAccumulatedOtherComprehensiveIncomeDisclosure of reclassification out of accumulated other comprehensive income (loss).EquityNo commentary yet[Hierarchy]us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1262.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1262.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1262-rules-def.xml8Accumulated Other Comprehensive Income (Loss), Reclassification Out of [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAdditionalFinancialInformationDisclosureEntire footnote of additional information, including descriptions and amounts, related to primary financial statements.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:AdditionalFinancialInformationDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-20.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-20.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/20-rules-def.xml14Additional Financial Information Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAllocationOfPlanAssetsDisclosure of the major categories of plan assets of pension plans and/or other employee benefit plans.PostEmploymentButPreRetirementCostsNo commentary yet[Level 3 Text Block]us-gaap:ScheduleOfAllocationOfPlanAssetsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-270.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-270.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/270-rules-def.xml16Allocation of Plan Assets [Table Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAllowanceForCreditLossesEntire footnote for allowance for credit losses.ReceivablesNo commentary yet[Level 1 Text Block]us-gaap:AllowanceForCreditLossesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-52.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-52.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/52-rules-def.xml4Allowance for Credit Losses Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAllowanceForDoubtfulAccountsReceivableRollforwardRoll forward (movements) in allowance for doubtful accountsReceivablesNo commentary yet[Roll Forward]us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1219.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1219.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1219-rules-def.xml24Allowance for Doubtful Accounts Receivable, by Legal Entity [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAntidilutiveSecuritiesExcludedfromComputationOfEarningsPerShareDisclosure of securities that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.EarningsPerShareNo commentary yet[Hierarchy]us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/EarningsPerSharehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-eps-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-357.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-357.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/357-rules-def.xml11Antidilutive Securities Excluded from Computation of Earnings Per Share, by Security Name [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAssetImpairmentChargesEntire footnote for the details of the charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.IntangibleAssetsGoodwillAndOtherNo commentary yet[Level 1 Text Block]us-gaap:AssetImpairmentChargesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-126.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-126.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/126-rules-def.xml6Asset Impairment Charges Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAssetRetirementObligationRollUpRoll up of details of asset retirement obligation.AssetRetirementObligationsNo commentary yet[Roll Up]us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/AssetRetirementObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-aro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-550.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-550.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/550-rules-def.xml22Asset Retirement Obligation [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAssetRetirementObligationDisclosureEntire footnote for an asset retirement obligation and the associated long-lived asset.AssetRetirementObligationsNo commentary yet[Level 1 Text Block]us-gaap:AssetRetirementObligationDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AssetRetirementObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-aro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-152.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-152.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/152-rules-def.xml17Asset Retirement Obligation Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAssetRetirementObligationRollForwardAnalysisRollForwardRoll forward of asset retirement obligation.AssetRetirementObligationsNo commentary yet[Roll Forward]us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/AssetRetirementObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-aro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-724.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-724.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/724-rules-def.xml25Asset Retirement Obligation, by Legal Entity [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAuctionMarketPreferredSecuritiesDisclosureEntire footnote for auction market preferred securities.EquityNo commentary yet[Level 1 Text Block]us-gaap:AuctionMarketPreferredSecuritiesDisclosureNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-219.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-219.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/219-rules-def.xml1Auction Market Preferred Securities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAvailableForsaleSecuritiesDebtMaturitiesAmortizedCostBasisRollUpRoll up of details of debt maturities of available-for-sale securities, amortized cost basis.DebtAndEquitySecuritiesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ides-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-501.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-501.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/501-rules-def.xml11Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBalanceSheetEconomic entity balance sheet (statement of financial position).BalanceSheetNo commentary yet[Abstract]Statementhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-sfp-cls-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1-rules-def.xml38Balance Sheethttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBalanceSheetParentheticalBalance sheet parenthetical information.BalanceSheetNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-sfp-cls-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-2.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-2.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/2-rules-def.xml2Balance Sheet, Parenthetical, by Legal Entity [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBasisOfPresentationAndSignificantAccountingPoliciesDisclosure(Alternative) Entire footnote combining basis of presentation with significant accounting policies. Use of this is discouraged, separate basis of presentation and significant accounting policies.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1246.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1246.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1246-rules-def.xml13Basis of Presentation and Significant Accounting Policies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBasisOfReportingEntire footnote of basis of reportingBasisOfReportingNo commentary yet[Level 1 Text Block]us-gaap:BasisOfAccountingNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1218.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1218.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1218-rules-def.xml43Basis of Reporting Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBillingsInExcessOfCostRollUpRoll up of details of billings in excess of cost.ContractorsConstructionNo commentary yet[Roll Up]us-gaap:CostsInExcessOfBillingsAndBillingsInExcessOfCostsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Contractorshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-con-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-704.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-704.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/704-rules-def.xml21Billings in Excess of Cost [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessAcquisitionIntegrationRestructuringAndOtherRelatedCostsEntire footnote of the description for costs incurred to effect a business combination that have been expensed during the period.BusinessCombinationsNo commentary yet[Level 1 Text Block]us-gaap:BusinessAcquisitionIntegrationRestructuringAndOtherRelatedCostsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-383.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-383.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/383-rules-def.xml8Business Acquisition, Integration, Restructuring and Other Related Costs Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessAcquisitionProFormaInformationDisclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.BusinessCombinationsNo commentary yet[Hierarchy]us-gaap:BusinessAcquisitionProFormaInformationTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-390.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-390.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/390-rules-def.xml6Business Acquisition, Pro Forma Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessAcquisitionsByAcquisitionDisclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities (excludes leveraged buyouts).BusinessCombinationsNo commentary yet[Hierarchy]us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-389.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-389.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/389-rules-def.xml6Business Acquisitions, by Acquisition [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessCombinationDisclosureEntire footnote for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.BusinessCombinationsNo commentary yet[Level 1 Text Block]us-gaap:BusinessCombinationDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-382.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-382.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/382-rules-def.xml47Business Combination Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessDescriptionAndAccountingPoliciesDisclosure(Alternative) Entire footnote combining business description with significant accounting policies. Use of this is discouraged, separate basis of presentation and significant accounting policies.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1247.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1247.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1247-rules-def.xml3Business Description and Accounting Policies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessDescriptionAndBasisOfPresentationDisclosure(Alternative) Entire footnote combining business description with basis of presentation. Use of this is discouraged, separate basis of presentation and significant accounting policies.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:BusinessDescriptionAndBasisOfPresentationTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1248.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1248.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1248-rules-def.xml7Business Description and Basis of Presentation Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureBusinessInsuranceRecoveriesDisclosureEntire footnote of business interruption insurance recoveries.ExtraordinaryItemsNo commentary yet[Level 1 Text Block]us-gaap:BusinessInsuranceRecoveriesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ExtraordinaryAndUnusualItemshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-eui-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1231.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1231.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1231-rules-def.xml7Business Insurance Recoveries Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCapitalLeasesInFinancialStatementsOfLesseeDisclosureEntire footnote for lessee entity's capital leasing arrangements.LeasesCapitalNo commentary yet[Level 1 Text Block]us-gaap:CapitalLeasesInFinancialStatementsOfLesseeDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-406.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-406.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/406-rules-def.xml5Capital Leases in Financial Statements of Lessee Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCapitalLeasesInFinancialStatementsOfLessorDisclosureEntire footnote for lessor entity's leasing arrangements.LeasesCapitalNo commentary yet[Level 1 Text Block]us-gaap:CapitalLeasesInFinancialStatementsOfLessorDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-410.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-410.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/410-rules-def.xml4Capital Leases of Lessor in Financial Statements Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCapitalizedComputerSoftwareNetMovementRollForwardRoll forward (movements) of capitalized computer software, net.ResearchAndDevelopmentCostsNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/ResearchAndDevelopmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-745.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-745.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/745-rules-def.xml10Capitalized Computer Software, Net [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashAndCashEquivalentsDisclosure of the roll up of the items which make up cash and cash equivalents.CashAndCashEquivalentsNo commentary yet[Roll Up]us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cce-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-46.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-46.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/46-rules-def.xml9Cash and Cash Equivalents [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashCashEquivalentsAndShortTermInvestmentsEntire footnote for cash and cash equivalent and short term investments.CashAndCashEquivalentsNo commentary yet[Level 1 Text Block]us-gaap:CashCashEquivalentsAndShortTermInvestmentsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cce-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1225.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1225.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1225-rules-def.xml5Cash and Cash Equivalents and Short-term Investments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashAndCashEquivalentsDisclosureEntire footnote for cash and cash equivalents.CashAndCashEquivalentsNo commentary yet[Level 1 Text Block]us-gaap:CashAndCashEquivalentsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cce-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-45.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-45.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/45-rules-def.xml9Cash and Cash Equivalents Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashFlowStatementEconomic entity cash flow statement.CashFlowStatementNo commentary yet[Roll Forward]Statementhttp://fasb.org/us-gaap/role/statement/StatementOfCashFlowsIndirecthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-scf-indir-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-12.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-12.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/12-rules-def.xml31Cash Flow Statement [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashFlowSupplementalDisclosuresEntire footnote for cash flow statement supplemental disclosures.CashFlowStatementNo commentary yet[Level 1 Text Block]us-gaap:CashFlowSupplementalDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/statement/StatementOfCashFlowsSupplementalDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-scf-sd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-13.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-13.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/13-rules-def.xml100Cash Flow, Supplemental Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCashCashEquivalentsAndMarketableSecuritiesDisclosureEntire footnote for cash and cash equivalent and marketable securities disclosure.CashAndCashEquivalentsNo commentary yet[Level 1 Text Block]us-gaap:CashCashEquivalentsAndMarketableSecuritiesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cce-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1232.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1232.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1232-rules-def.xml2Cash, Cash Equivalents, and Marketable Securities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCollaborativeArrangementDisclosureEntire footnote for collaborative arrangements in which the entity is a participant.CollaborativeArrangementsNo commentary yet[Level 1 Text Block]us-gaap:CollaborativeArrangementDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-32.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-32.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/32-rules-def.xml12Collaborative Arrangement Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCommitmentsAndContingenciesDisclosureEntire footnote for commitments and contingencies.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:CommitmentsAndContingenciesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-172.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-172.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/172-rules-def.xml96Commitments and Contingencies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCommitmentsContingenciesAndGuaranteesEntire footnote for commitments, contingencies, and guarantees.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:CommitmentsContingenciesAndGuaranteesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-173.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-173.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/173-rules-def.xml10Commitments Contingencies and Guarantees Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCommitmentsDisclosureEntire footnote for significant arrangements with third parties, which includes operating lease arrangements and arrangements in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services, and operating lease arrangements.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:CommitmentsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-174.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-174.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/174-rules-def.xml7Commitments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCommonStockOutstandingRollForwardDisclosure of activity of common stock for period.EquityNo commentary yet[Roll Forward]us-gaap:ScheduleOfCommonStockOutstandingRollForwardTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1263.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1263.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1263-rules-def.xml8Common Stock Outstanding [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCommonStockByClassDetail of common stock by class of common stock.BalanceSheetNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-sfp-cls-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-5.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-5.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/5-rules-def.xml12Common Stock, by Class [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureClassOfCommonStockHierarchyDisclosure of information about class of common stock.EquityNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-960.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-960.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/960-rules-def.xml1Common Stock, by Class, Balance Sheet Parenthetical [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCompensationAndEmployeeBenefitPlansEntire footnote for an entity's employee compensation and benefit plans.PostEmploymentButPreRetirementCostsNo commentary yet[Level 1 Text Block]us-gaap:CompensationAndEmployeeBenefitPlansTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-262.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-262.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/262-rules-def.xml37Compensation and Employee Benefit Plans Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCompensationAndEmployeeBenefitPlansOtherThanShareBasedCompensationDisclosureEntire footnote for an entity's employee compensation and benefit plans.PostEmploymentButPreRetirementCostsNo commentary yet[Level 1 Text Block]us-gaap:CompensationAndEmployeeBenefitPlansOtherThanShareBasedCompensationTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1233.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1233.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1233-rules-def.xml4Compensation and Employee Benefit Plans Other than Share-based Compensation Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCompensationRelatedCostsAndSharebasedPaymentsDisclosuresEntire footnote for compensation-related costs for equity-based compensation.StockCompensationNo commentary yet[Level 1 Text Block]us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-290.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-290.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/290-rules-def.xml82Compensation Related Costs and Share-based Payments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCompensationRelatedCostsGeneralEntire footnote for compensation costs.CompensationRelatedCostsGeneralNo commentary yet[Level 1 Text Block]us-gaap:CompensationRelatedCostsGeneralTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsGeneralhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcgen-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-259.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-259.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/259-rules-def.xml9Compensation Related Costs, General, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureComprehensiveIncomeLossNoteEntire footnote for comprehensive income. Explains accumulated other comprehensive income.EquityNo commentary yet[Level 1 Text Block]us-gaap:ComprehensiveIncomeNoteTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-220.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-220.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/220-rules-def.xml200Comprehensive Income (Loss) Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureConcentrationOfRiskByRiskFactorDisclosure of concentration risks, by risk factor.RisksUncertaintiesNo commentary yet[Hierarchy]us-gaap:SchedulesOfConcentrationOfRiskByRiskFactorTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/RisksAndUncertaintieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ru-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-362.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-362.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/362-rules-def.xml22Concentration of Risk, by Risk Factor [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureConcentrationRiskDisclosureEntire footnote for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact.RisksUncertaintiesNo commentary yet[Level 1 Text Block]us-gaap:ConcentrationRiskDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/RisksAndUncertaintieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ru-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-363.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-363.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/363-rules-def.xml48Concentration Risk Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCondensedBalanceSheetDisclosure of condensed balance sheet.OtherInformationNo commentary yet[Roll Up]us-gaap:ScheduleOfCondensedBalanceSheetTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1254.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1254.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1254-rules-def.xml16Condensed Balance Sheet [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCondensedCashFlowStatementDisclosure of condensed cash flow statement.OtherInformationNo commentary yet[Roll Forward]us-gaap:ScheduleOfCondensedCashFlowStatementTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1255.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1255.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1255-rules-def.xml15Condensed Cash Flow Statement [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCondensedFinancialStatementsDisclosureEntire footnote of condensed financial informationOtherInformationNo commentary yet[Level 1 Text Block]us-gaap:CondensedFinancialStatementsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1234.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1234.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1234-rules-def.xml6Condensed Financial Statements Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCondensedIncomeStatementDisclosure of condensed income statement.OtherInformationNo commentary yet[Roll Up]us-gaap:ScheduleOfCondensedIncomeStatementTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1256.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1256.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1256-rules-def.xml24Condensed Income Statement [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureContingenciesDisclosureEntire footnote for loss and gain contingencies.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:LossContingencyDisclosuresNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-175.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-175.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/175-rules-def.xml2Contingencies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureContractReceivableRetainageRollUpRoll up of the details of amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract.ReceivablesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-458.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-458.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/458-rules-def.xml3Contract Receivable Retainage [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureConvertibleDebtDisclosure of information pertaining to short-term and long-debt instruments or arrangements.DebtNo commentary yet[Level 3 Text Block]us-gaap:ConvertibleDebtTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1264.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1264.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1264-rules-def.xml3Convertible Debt [Table Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCostAndEquityMethodInvestmentsDisclosureEntire footnote for cost method and equity method investments included basis, impairment losses, recognized or unrecognized gains (losses).DebtAndEquitySecuritiesNo commentary yet[Level 1 Text Block]us-gaap:CostAndEquityMethodInvestmentsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ides-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-75.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-75.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/75-rules-def.xml5Cost and Equity Method Investments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCostMethodInvestmentsDescriptionEntire footnote for investments accounted for under the cost-method.InvestmentsOtherNo commentary yet[Level 1 Text Block]us-gaap:CostMethodInvestmentsDescriptionTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-93.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-93.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/93-rules-def.xml51Cost-method Investments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCostMethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairmentsRollUpRoll up of details of realized gain (loss) of cost-method investments excluding other than temporary impairments.InvestmentsOtherNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-511.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-511.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/511-rules-def.xml10Cost-method Investments, Realized Gain (Loss), Excluding Other than Temporary Impairments [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDebtDisclosure of information pertaining to short-term and long-debt instruments or arrangements.DebtNo commentary yet[Level 3 Text Block]us-gaap:ScheduleOfDebtTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-190.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-190.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/190-rules-def.xml6Debt [Table Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDebtAndCapitalLeasesDisclosuresEntire footnote for debt and capital lease obligations.DebtNo commentary yet[Level 1 Text Block]us-gaap:DebtAndCapitalLeasesDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-187.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-187.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/187-rules-def.xml4Debt and Capital Leases Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDebtInstrumentRedemptionDisclosureEntire footnote for information debt instrument redemptions.DebtNo commentary yet[Level 1 Text Block]us-gaap:DebtInstrumentRedemptionTableTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1235.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1235.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1235-rules-def.xml33Debt Instrument Redemption Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDebtDisclosureEntire footnote for information about short-term and long-term debt arrangements.DebtNo commentary yet[Level 1 Text Block]us-gaap:DebtDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-186.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-186.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/186-rules-def.xml83Debt Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureEntire footnote of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle.DeferredCostsNo commentary yet[Level 1 Text Block]us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-109.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-109.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/109-rules-def.xml26Deferred Costs, Capitalized, Prepaid, and Other Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredRevenueRollForwardRoll forward (movement) in deferred revenue.DeferredRevenueNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/DeferredRevenuehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-727.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-727.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/727-rules-def.xml9Deferred Revenue [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredRevenueRollUpRoll up of details of deferred revenue.DeferredRevenueNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/DeferredRevenuehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-554.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-554.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/554-rules-def.xml4Deferred Revenue [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredRevenueArrangementByTypeDisclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. Some times this is disclosed as a roll up, other times as a roll forward.DeferredRevenueNo commentary yet[Roll Up]us-gaap:DeferredRevenueByArrangementDisclosureTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/DeferredRevenuehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-162.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-162.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/162-rules-def.xml10Deferred Revenue Arrangement, by Type [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredRevenueDisclosureEntire footnote for deferred revenues at the end of the reporting period, and description and amounts of significant changes that occurred during the reporting period.DeferredRevenueNo commentary yet[Level 1 Text Block]us-gaap:DeferredRevenueDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DeferredRevenuehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-160.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-160.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/160-rules-def.xml8Deferred Revenue Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredTaxAssetsLiabilitiesNetRollUpRoll up of details of deferred tax assets (liabilities), net.IncomeTaxesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-635.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-635.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/635-rules-def.xml35Deferred Tax Assets (Liabilities), Net [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredTaxAssetsAndLiabilitiesDisclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position.IncomeTaxesNo commentary yet[Roll Up]us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-338.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-338.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/338-rules-def.xml30Deferred Tax Assets and Liabilities [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDeferredTaxLiabilityNotRecognizedHierarchyDisclosure of information about deferred tax liability not recognized.IncomeTaxesNo commentary yet[Hierarchy]us-gaap:SummaryOfDeferredTaxLiabilityNotRecognizedTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1051.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1051.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1051-rules-def.xml32Deferred Tax Liability Not Recognized [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDefinedBenefitPlanBenefitObligationRollForwardRoll forward which shows change in defined benefit plan benefit obligation.PostEmploymentButPreRetirementCostsNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-737.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-737.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/737-rules-def.xml8Defined Benefit Plan, Change in Benefit Obligation, by Plan [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDefinedBenefitPlansDisclosuresDisclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans.PostEmploymentButPreRetirementCostsNo commentary yet[Level 1 Text Block]us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-263.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-263.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/263-rules-def.xml138Defined Benefit Plans Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDerivativeInstrumentsInStatementOfFinancialPositionFairValueDisclosure of fair value of derivative instruments in statement of financial position (balance sheet).DerivativeInstrumentsAndHedgingActivitiesNo commentary yet[Roll Up]us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-diha-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1260.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1260.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1260-rules-def.xml20Derivative Instruments in Statement of Financial Position Fair Value [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDerivativeEntire footnote of information that describes and identifies a derivative or group of derivatives on a disaggregated basis.DerivativeInstrumentsAndHedgingActivitiesNo commentary yet[Level 1 Text Block]us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-diha-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1188.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1188.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1188-rules-def.xml57Derivative Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDerivativesAndFairValueDisclosureEntire footnote of derivative and fair value combined.DerivativeInstrumentsAndHedgingActivitiesNo commentary yet[Level 1 Text Block]us-gaap:DerivativesAndFairValueTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-diha-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1236.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1236.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1236-rules-def.xml3Derivatives and Fair Value Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDevelopmentStageEnterpriseGeneralDisclosureEntire footnote for all or part of the detailed information required for development stage enterprises.DevelopmentStageEntitiesNo commentary yet[Level 1 Text Block]us-gaap:DevelopmentStageEnterpriseGeneralDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DevelopingStageEnterpriseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dse-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-434.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-434.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/434-rules-def.xml136Development Stage Enterprise General Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDisposalGroupsIncludingDiscontinuedOperationsDisclosureEntire footnote for the facts and circumstances leading to the completed or expected disposal.DiscontinuedOperationsNo commentary yet[Level 1 Text Block]us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-disops-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-380.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-380.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/380-rules-def.xml174Disposal Groups, Including Discontinued Operations, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDividendPaymentRestrictionsEntire footnote of statutory restrictions on the payment of dividends as prescribed by the National Association of Insurance Commissioners or state regulatory authorities.EquityNo commentary yet[Level 1 Text Block]us-gaap:ScheduleOfDividendPaymentRestrictionsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-248.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-248.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/248-rules-def.xml2Dividend Payment Restrictions Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDocumentAndEntityInformationThis disclosure should NOT be used. Instead, use the DocumentInformation, EntityInformation and EntityListings disclosures.DocumentInformationNo commentary yet[Hierarchy]dei:DocumentInformationTextBlockDetailhttp://xbrl.sec.gov/dei/role/document/DocumentInformationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/dei-pre-2014-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1226.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1226.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1226-rules-def.xml30Document and Entity Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDocumentInformationInformation related to a submitted financial report.DocumentInformationNo commentary yet[Hierarchy]dei:DocumentInformationTextBlockDetailhttp://xbrl.sec.gov/dei/role/document/DocumentInformationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/dei-pre-2014-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-436.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-436.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/436-rules-def.xml7Document Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureDueToRelatedPartiesCurrentRollUpRoll up of details of current portion of due to related parties.PayablesAccrualsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-pay-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-548.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-548.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/548-rules-def.xml3Due to Related Parties, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEarningsPerShareDisclosuresEntire footnote for earnings per share information.EarningsPerShareNo commentary yet[Level 1 Text Block]us-gaap:EarningsPerShareTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/EarningsPerSharehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-eps-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-350.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-350.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/350-rules-def.xml76Earnings Per Share Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEarningsPerShareBasicRollUpRoll up of earnings per share, basic.EarningsPerShareNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-652.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-652.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/652-rules-def.xml4Earnings Per Share, Basic [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationRollUpRoll up of details of percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.IncomeTaxesNo commentary yet[Roll Up]us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-640.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-640.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/640-rules-def.xml89Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEmployeeServiceSharebasedCompensationAllocationOfRecognizedPeriodCostsDisclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.StockCompensationNo commentary yet[Hierarchy]us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-324.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-324.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/324-rules-def.xml4Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEntityInformationInformation about the reporting entity.EntityInformationNo commentary yet[Hierarchy]dei:EntityTextBlockDetailhttp://xbrl.sec.gov/dei/role/document/EntityInformationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/dei-pre-2014-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-437.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-437.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/437-rules-def.xml7Entity Information, by Legal Entity [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEntityListingsInformation related to the listings on stock exchanges of the reporting entiy.EntityInformationNo commentary yet[Hierarchy]Detailhttp://xbrl.sec.gov/dei/role/document/EntityInformationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/dei-pre-2014-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-443.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-443.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/443-rules-def.xml5Entity Listings, by Legal Entity and Instrument and Exchange [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccrualForEnvironmentalLossContingenciesRollForwardRoll forward (movement) of environmental loss contingencies accrual.ContingenciesNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ero-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-728.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-728.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/728-rules-def.xml13Environmental Loss Contingencies Accrual [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAccrualForEnvironmentalLossContingenciesRollUpRoll up of details of accrual of environmental loss contingencies.ContingenciesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ero-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-557.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-557.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/557-rules-def.xml2Environmental Loss Contingencies Accrual [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEnvironmentalLossContingencyDisclosureEntire footnote for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:EnvironmentalLossContingencyDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ero-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-170.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-170.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/170-rules-def.xml14Environmental Loss Contingency Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEquityMethodInvestmentsDisclosure of equity method investments in common stock.EquityMethodJointVenturesNo commentary yet[Abstract]us-gaap:EquityMethodInvestmentsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/InvestmentsEquityMethodAndJointVentureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-emjv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-90.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-90.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/90-rules-def.xml8Equity Method Investments [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureEquityMethodInvestmentsDisclosureEntire footnote for equity method investments and joint ventures.EquityMethodJointVenturesNo commentary yet[Level 1 Text Block]us-gaap:EquityMethodInvestmentsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsEquityMethodAndJointVentureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-emjv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-91.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-91.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/91-rules-def.xml92Equity Method Investments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureExpectedBenefitPaymentsDisclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.PostEmploymentButPreRetirementCostsNo commentary yet[Roll Up]us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-283.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-283.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/283-rules-def.xml17Expected Benefit Payments [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureExtraordinaryItemsDisclosureEntire footnote of extraordinary itemsExtraordinaryItemsNo commentary yet[Level 1 Text Block]us-gaap:ExtraordinaryItemsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ExtraordinaryAndUnusualItemshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-eui-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1229.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1229.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1229-rules-def.xml11Extraordinary Items Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFairValueMeasurementInputsDisclosureEntire footnote for the fair value inputs of financial instruments.FairValueMeasurementNo commentary yet[Level 1 Text Block]us-gaap:FairValueMeasurementInputsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-fifvd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1230.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1230.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1230-rules-def.xml49Fair Value Measurement Inputs Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFairValueMeasurementsOtherEntire footnote for the fair value of financial instruments.FairValueMeasurementNo commentary yet[Level 1 Text Block]us-gaap:FairValueDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-fifvd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1191.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1191.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1191-rules-def.xml57Fair Value Measurements Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFairValueMeasurementsRecurringAndNonrecurringDisclosure of information about assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition.FairValueMeasurementNo commentary yet[Hierarchy]us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-fifvd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1187.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1187.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1187-rules-def.xml4Fair Value Measurements, Recurring and Nonrecurring [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFairValueOptionDisclosureEntire footnote for the fair value of financial instruments, fair value option.FairValueMeasurementNo commentary yet[Level 1 Text Block]us-gaap:FairValueOptionTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-fifvd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1237.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1237.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1237-rules-def.xml4Fair Value Option Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFairValueAssetsMeasuredonRecurringBasisUnobservableInputReconciliationCalculationRollForwardDisclosure of information about fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period.FairValueMeasurementNo commentary yet[Roll Forward]us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-fifvd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1184.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1184.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1184-rules-def.xml10Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFinancialInstrumentsDisclosureEntire footnote for financial instruments.InvestmentsOtherNo commentary yet[Level 1 Text Block]us-gaap:FinancialInstrumentsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-94.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-94.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/94-rules-def.xml15Financial Instruments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFinancingReceivablesEntire footnote for financing receivables.ReceivablesNo commentary yet[Level 1 Text Block]us-gaap:FinancingReceivablesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-55.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-55.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/55-rules-def.xml13Financing Receivables Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFiniteLivedIntangibleAssetsEstimatedUsefulLivesDisclosure of the estimated useful lives of finite-lived intangible assets.IntangibleAssetsGoodwillAndOtherNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1269.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1269.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1269-rules-def.xml26Finite-lived Intangible Assets, Estimated Useful Lives, by Major Class [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureForeignCurrencyTransactionDisclosureEntire footnote for foreign currency transactions and translation.ForeignOperationsAndCurrencyTranslationNo commentary yet[Level 1 Text Block]us-gaap:ForeignCurrencyDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ForeignOperationsAndCurrencyTranslationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-foct-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-400.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-400.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/400-rules-def.xml4Foreign Currency Transaction Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFranchisorDisclosureDisclosure of franchised stores, restaurants, or other units and company owned stores, restaurants, or other units.PresentationFinancialStatementsNo commentary yet[Hierarchy]us-gaap:ScheduleOfFranchisorDisclosureTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-30.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-30.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/30-rules-def.xml7Franchisor Locations, by Location [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOperatingLeasesFutureMinimumPaymentsDueRollUpFuture minimum payments due from operating leases of a lessee.LeasesOperatingNo commentary yet[Roll Up]us-gaap:OperatingLeasesOfLesseeDisclosureTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-691.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-691.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/691-rules-def.xml6Future Minimum Payments Due under Operating Leases of Lessee [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOperatingLeasesFutureMinimumPaymentsReceivableRollUpRoll up of details of future minimum payments receivable from operating leases for a lessor.LeasesOperatingNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-688.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-688.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/688-rules-def.xml12Future Minimum Payments Receivable of Operating Leases of Lessor [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureCapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPaymentsRollUpRoll up of details of present value of net minimum future payments for noncancelable capital leases of a lessor.LeasesCapitalNo commentary yet[Roll Up]us-gaap:ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-680.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-680.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/680-rules-def.xml44Future Minimum Payments, Present Value of Net Minimum Payments, Noncancelable Capital Leases, Lessor [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePresentValueOfFutureMinimumLeasePaymentsSaleLeasebackTransactionsRollUpRoll up of details of present value of future minimum lease payments from sales leaseback transactions.LeasesSaleAndLeasebackNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-695.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-695.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/695-rules-def.xml5Future Minimum Payments, Present Value of Net Minimum Payments, Sale Leaseback Transactions [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFutureMinimumRentalPaymentsForOperatingLeasesDisclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years.LeasesOperatingNo commentary yet[Roll Up]us-gaap:ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-413.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-413.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/413-rules-def.xml16Future Minimum Rental Payments for Operating Leases [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFutureMinimumSubleaseRentalsSaleLeasebackTransactionsRollUpRoll up of details of future minimum sublease rentals from seller-lessee sales leaseback transactions accounted for using the deposit method or as a financing.LeasesSaleAndLeasebackNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-694.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-694.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/694-rules-def.xml10Future Minimum Sublease Rentals, Sales Leaseback Transactions, Seller-Lessee [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGeographicAreasLongLivedAssetsInIndividualForeignCountriesByCountryDisclosureDisclosure of long-lived assets in foreign contries, by country.SegmentReportingNo commentary yet[Roll Up]us-gaap:ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesByCountryTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-369.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-369.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/369-rules-def.xml12Geographic Areas, Long-Lived Assets in Individual Foreign Countries, by Country [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGoodwillRollForwardRoll forward (movements) of goodwill. There are two approaches which can be used. One is to reconcile net goodwill. The other is to reconcile gross goodwill, and then adjust out accumulated amortization to adjust the gross amount to the net amount. Both approachs are equivalent.IntangibleAssetsGoodwillAndOtherNo commentary yet[Roll Forward]us-gaap:ScheduleOfGoodwillTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-723.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-723.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/723-rules-def.xml46Goodwill [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGoodwillDisclosureEntire footnote for goodwill.IntangibleAssetsGoodwillAndOtherNo commentary yet[Level 1 Text Block]us-gaap:GoodwillDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-127.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-127.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/127-rules-def.xml9Goodwill Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGoodwillDisclosure of goodwill by reportable segment and in total which includes a roll forward schedule. (This seems to be the same as the disclosure GoodwillRollForward.IntangibleAssetsGoodwillAndOtherNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-142.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-142.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/142-rules-def.xml25Goodwill, by Business Segment [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGuaranteesEntire footnote for each guarantee obligation, or each group of similar guarantee obligations.GuaranteesNo commentary yet[Level 1 Text Block]us-gaap:GuaranteesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Guaranteeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-guarantees-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-185.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-185.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/185-rules-def.xml33Guarantees Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureImpairedAssetsTobeDisposedOfByMethodOtherThanSaleDisclosure for impaired assets to be disposed of by a method other than sale.PropertyPlantAndEquipmentNo commentary yet[Hierarchy]us-gaap:ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-121.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-121.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/121-rules-def.xml4Impaired Assets to be Disposed of by Method Other than Sale [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomebeforeIncomeTaxDomesticAndForeignDisclosure of income before income tax between domestic and foreign jurisdictions.IncomeTaxesNo commentary yet[Roll Up]us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-340.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-340.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/340-rules-def.xml18Income before Income Tax, Domestic and Foreign [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomeStatementEconomic entity income statement. (Alternatively, could combine income statement and statement of comprehensive income.)IncomeStatementNo commentary yet[Roll Up]Statementhttp://fasb.org/us-gaap/role/statement/StatementOfIncomehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-soi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-7.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-7.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/7-rules-def.xml28Income Statement, by Legal Entity [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomeTaxContingencyDisclosure of amounts of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other types of income tax contingencies, and a reconciliation of the changes in unrecognized tax benefits.IncomeTaxesNo commentary yet[Roll Forward]us-gaap:SummaryOfIncomeTaxContingenciesTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-347.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-347.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/347-rules-def.xml15Income Tax Contingency [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomeTaxExaminationPenaltiesAndInterestAccruedRollUpRoll up of details of penalties and interest accrued from income tax examination.IncomeTaxesNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-642.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-642.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/642-rules-def.xml21Income Tax Examination, Penalties and Interest Accrued [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomeTaxExpenseBenefitDetailsDisclosure of the components of income tax expense attributable to continuing operations.IncomeTaxesNo commentary yet[Roll Up]us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-337.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-337.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/337-rules-def.xml28Income Tax Expense (Benefit) Details [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIncomeTaxDisclosureEntire footnote for income taxes.IncomeTaxesNo commentary yet[Level 1 Text Block]us-gaap:IncomeTaxDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/IncomeTaxeshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inctax-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-336.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-336.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/336-rules-def.xml107Income Tax Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIndefinitelivedIntangibleAssetsByMajorClassHierarchyDisclosure of information about indefinite-lived intangible assets by major class.IntangibleAssetsGoodwillAndOtherNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-873.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-873.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/873-rules-def.xml8Indefinite-lived Intangible Assets, by Major Class [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGoodwillAndIntangibleAssetsDisclosureEntire footnote for the aggregate amount of goodwill and a description of intangible assets.IntangibleAssetsGoodwillAndOtherNo commentary yet[Level 1 Text Block]us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-125.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-125.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/125-rules-def.xml299Intangible Assets and Goodwill Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIntangibleAssetsDisclosureEntire footnote for all or part of the information related to intangible assets.IntangibleAssetsGoodwillAndOtherNo commentary yet[Level 1 Text Block]us-gaap:IntangibleAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-128.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-128.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/128-rules-def.xml18Intangible Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFiniteLivedIntangibleAssetsAcquiredasPartOfBusinessCombinationDisclosure of information about finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class, for the period in which they were aquired.BusinessCombinationsNo commentary yet[Hierarchy]us-gaap:ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-393.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-393.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/393-rules-def.xml5Intangible Assets, Finite-lived, Acquired as Part of Business Combination [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFiniteLivedIntangibleAssetsAmortizationExpenseDisclosure of amortization expense for finite-lived intangible assetsIntangibleAssetsGoodwillAndOtherNo commentary yet[Level 3 Text Block]us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1265.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1265.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1265-rules-def.xml5Intangible Assets, Finite-lived, Amortization Expense [Table Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFiniteLivedIntangibleAssetsFutureAmortizationExpenseRollUpRoll up of details of future amortization expense of finite-lived intangible assets.IntangibleAssetsGoodwillAndOtherNo commentary yet[Roll Up]us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-537.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-537.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/537-rules-def.xml55Intangible Assets, Finite-lived, Future Amortization Expense [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureFiniteLivedIntangibleAssetsNetRollUpRoll up of details of finite-lived intangible assets, net.IntangibleAssetsGoodwillAndOtherNo commentary yet[Roll Up]us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-539.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-539.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/539-rules-def.xml24Intangible Assets, Finite-lived, Net, by Major Class [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIndefinitelivedIntangibleAssetsRollForwardRoll forward of indefinite-lived intangible assets.IntangibleAssetsGoodwillAndOtherNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-722.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-722.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/722-rules-def.xml8Intangible Assets, Indefinite-lived [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureIndefinitelivedIntangibleAssetsDisclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment.IntangibleAssetsGoodwillAndOtherNo commentary yet[Roll Up]us-gaap:ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iago-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-135.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-135.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/135-rules-def.xml8Intangible Assets, Indefinite-lived, by Major Class [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInterestAndOtherIncomeRollUpRoll up of details of interest and other income.InterestNo commentary yet[Roll Up]us-gaap:InterestAndOtherIncomeTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-630.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-630.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/630-rules-def.xml8Interest and Other Income [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInterestAndOtherIncomeEntire footnote for interest and other income.InterestNo commentary yet[Level 1 Text Block]us-gaap:InterestAndOtherIncomeTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-328.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-328.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/328-rules-def.xml4Interest and Other Income Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInventoryDisclosureEntire footnote for inventory.InventoryNo commentary yet[Level 1 Text Block]us-gaap:InventoryDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Inventoryhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-105.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-105.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/105-rules-def.xml37Inventory Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInventoryCurrentDisclosure of inventories expected to be converted to cash, sold or exchanged within the normal operating cycle.InventoryNo commentary yet[Level 3 Text Block]us-gaap:ScheduleOfInventoryCurrentTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Inventoryhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1222.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1222.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1222-rules-def.xml11Inventory, Current [Table Text Block] (DO NOT USE, DUPLICATE)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInventoryNetRollUpRoll up of details of current inventory, net.InventoryNo commentary yet[Roll Up]us-gaap:ScheduleOfInventoryCurrentTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Inventoryhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-517.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-517.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/517-rules-def.xml63Inventory, Net (Current) [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInventoryNoncurrentRollUpRoll up of details of noncurrent inventory.InventoryNo commentary yet[Roll Up]us-gaap:ScheduleOfInventoryNoncurrentTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Inventoryhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-521.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-521.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/521-rules-def.xml26Inventory, Noncurrent [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInventoryNoncurrentDisclosure of inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle including inventoried costs relating to long-term contracts or programs.InventoryNo commentary yet[Level 3 Text Block]us-gaap:ScheduleOfInventoryNoncurrentTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Inventoryhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-inv-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-108.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-108.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/108-rules-def.xml13Inventory, Noncurrent [Table Text Block] (DO NOT USE, DUPLICATE)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInvestmentsAndOtherNoncurrentAssetsEntire footnote for investments and other noncurrent assets.InvestmentsOtherNo commentary yet[Level 1 Text Block]us-gaap:InvestmentsAndOtherNoncurrentAssetsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-95.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-95.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/95-rules-def.xml3Investments and Other Noncurrent Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInvestmentsInDebtAndEquityInstrumentsCashAndCashEquivalentsUnrealizedAndRealizedGainsLossesEntire footnote for Investments in Debt and Equity Instruments, Cash And Cash Equivalents, Unrealized and Realized Gains LossesCashAndCashEquivalentsNo commentary yet[Level 1 Text Block]us-gaap:InvestmentsInDebtAndEquityInstrumentsCashAndCashEquivalentsUnrealizedAndRealizedGainsLossesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cce-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1251.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1251.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1251-rules-def.xml15Investments in Debt and Equity Instruments, Cash And Cash Equivalents, Unrealized and Realized Gains Losses Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureInvestmentsInDebtAndMarketableEquitySecuritiesDisclosuresEntire footnote of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.DebtAndEquitySecuritiesNo commentary yet[Level 1 Text Block]us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ides-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-74.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-74.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/74-rules-def.xml79Investments in Debt and Marketable Equity Securities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLeasesOfLesseeDisclosureEntire footnote for lessee entity's leasing arrangements.LeasesOperatingNo commentary yet[Level 1 Text Block]us-gaap:LeasesOfLesseeDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-405.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-405.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/405-rules-def.xml34Leases of Lessee Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLeasesOfLessorDisclosureEntire footnote for lessor entity's leasing arrangements for operating, capital and leveraged leases.LeasesOperatingNo commentary yet[Level 1 Text Block]us-gaap:LeasesOfLessorDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-409.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-409.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/409-rules-def.xml3Leases of Lessor Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLegalMattersAndContingenciesEntire footnote for legal proceedings, legal contingencies, litigation, regulatory and environmental matters and other contingencies.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:LegalMattersAndContingenciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-176.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-176.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/176-rules-def.xml11Legal Matters and Contingencies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLifeInsuranceCorporateOrBankOwnedEntire footnote for corporate (COLI) or bank (BOLI) owned life insurance.InvestmentsOtherNo commentary yet[Level 1 Text Block]us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-96.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-96.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/96-rules-def.xml43Life Insurance, Corporate or Bank Owned, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLifeSettlementContractsDisclosureEntire footnote for life settlement contracts.InvestmentsOtherNo commentary yet[Level 1 Text Block]us-gaap:LifeSettlementContractsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InvestmentsAllOtherInvestmentshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-iaoi-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-97.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-97.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/97-rules-def.xml6Life Settlement Contracts Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLineOfCreditFacilityDisclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements.DebtNo commentary yet[Hierarchy]us-gaap:ScheduleOfLineOfCreditFacilitiesTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-198.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-198.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/198-rules-def.xml12Line of Credit Facility, by Type [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGeographicAreasLongLivedAssetsHierarchyDisclosure of information about long-lived assets by geographic area. Long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assetsSegmentReportingNo commentary yet[Hierarchy]us-gaap:LongLivedAssetsByGeographicAreasTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1073.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1073.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1073-rules-def.xml14Long-Lived Assets, by Geographic Area [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLongTermContractsOrProgramsDisclosureEntire footnote for long-term contracts or programs.ContractorsConstructionNo commentary yet[Level 1 Text Block]us-gaap:LongTermContractsOrProgramsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Contractorshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-con-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-433.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-433.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/433-rules-def.xml87Long-term Contracts or Programs Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLongTermDebtInstrumentsDisclosure of long-debt instruments or other arrangements.DebtNo commentary yet[Hierarchy]us-gaap:ScheduleOfDebtInstrumentsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-199.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-199.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/199-rules-def.xml19Long-term Debt Instruments, by Instrument [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLongTermDebtMaturitiesDisclosure of the amount of maturities for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.DebtNo commentary yet[Roll Up]us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-195.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-195.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/195-rules-def.xml68Long-term Debt Maturities [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLongTermDebtEntire footnote for long-term debt.DebtNo commentary yet[Level 1 Text Block]us-gaap:LongTermDebtTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-188.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-188.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/188-rules-def.xml26Long-term Debt Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLongTermPurchaseCommitmentDisclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle.CommitmentsNo commentary yet[Hierarchy]us-gaap:LongTermPurchaseCommitmentTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-165.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-165.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/165-rules-def.xml19Long-term Purchase Commitment, by Category of Item Purchased [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLossContingencyAccrualRollForwardRoll forward (movements) of loss contingency accrual.ContingenciesNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-732.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-732.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/732-rules-def.xml14Loss Contingency Accrual [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureMembersEquityNoteDisclosureEntire footnote if an economic entity reports member equity.EquityNo commentary yet[Level 1 Text Block]us-gaap:MembersEquityNotesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1239.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1239.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1239-rules-def.xml14Member Equity Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureMergersAcquisitionsAndDispositionsDisclosuresEntire footnote for business combinations, including leverage buyout transactions, and divestitures.BusinessCombinationsNo commentary yet[Level 1 Text Block]us-gaap:MergersAcquisitionsAndDispositionsDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/BusinessCombinationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-bc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-385.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-385.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/385-rules-def.xml19Mergers, Acquisitions and Dispositions Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureMortgageNotesPayableDisclosureEntire footnote for mortgage notes payable.DebtNo commentary yet[Level 1 Text Block]us-gaap:MortgageNotesPayableDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-189.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-189.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/189-rules-def.xml2Mortgage Notes Payable Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNatureOfOperationsEntire footnote of information about the nature of a reporting entities operations and nature of it business.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:NatureOfOperationsNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1213.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1213.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1213-rules-def.xml44Nature of Operations Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNetBenefitCostsDisclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.PostEmploymentButPreRetirementCostsNo commentary yet[Roll Up]us-gaap:ScheduleOfNetBenefitCostsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-285.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-285.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/285-rules-def.xml17Net Periodic Benefit Costs, by Plan [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNewAccountingPronouncementsAndChangesInAccountingPrinciplesHierarchyDisclosure of information about new accounting pronouncements and changes in accounting principles.NewAccountingPronouncementsNo commentary yet[Abstract]us-gaap:ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/AccountingChangesAndErrorCorrectionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-acec-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-787.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-787.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/787-rules-def.xml4New Accounting Pronouncements and Changes in Accounting Principles, by New Pronouncement Adopted [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNewAccountingPronouncementsOrChangeInAccountingPrincipleEntire footnote of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.NewAccountingPronouncementsNo commentary yet[Level 1 Text Block]us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingChangesAndErrorCorrectionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-acec-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-38.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-38.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/38-rules-def.xml44New Accounting Pronouncements or Change in Accounting Principle [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNoncontrollingInterestDisclosureEntire footnote for noncontrolling interest in consolidated subsidiaries.DistinguishingLiabilitiesFromEquityNo commentary yet[Level 1 Text Block]us-gaap:MinorityInterestDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/MinorityInteresthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ni-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-214.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-214.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/214-rules-def.xml47Noncontrolling Interest Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNonmonetaryTransactionsDisclosureEntire footnote of nonmonetary transactionsNonmonetaryTransactionsNo commentary yet[Level 1 Text Block]us-gaap:NonmonetaryTransactionsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/NonmonetaryTransactionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-nt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1227.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1227.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1227-rules-def.xml13Nonmonetary Transactions Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNonmonetaryTransactionsDisclosure of exchanges with other entities that involve principally nonmonetary assets or liabilities or relate to a transfer of nonmonetary assets for which the entity receives no assets in return.NonmonetaryTransactionsNo commentary yet[Hierarchy]us-gaap:DetailsOfNonmonetaryTransactionsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/NonmonetaryTransactionshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-nt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-421.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-421.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/421-rules-def.xml4Nonmonetary Transactions, by Transaction Type [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureNontradeReceivablesCurrentRollUpRoll up of details of amounts currently receivable other than from customers.ReceivablesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-465.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-465.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/465-rules-def.xml4Nontrade Receivables, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOperatingLeasesOfLessorDisclosureEntire footnote for operating leases of a lessor.LeasesOperatingNo commentary yet[Level 1 Text Block]us-gaap:OperatingLeasesOfLessorDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-411.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-411.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/411-rules-def.xml3Operating Leases of Lessor Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOptionIndexedToIssuersEquityDescriptionEntire footnote for freestanding option contracts issued by an entity that are indexed to, and potentially settled in, an entity's own stock.DistinguishingLiabilitiesFromEquityNo commentary yet[Level 1 Text Block]us-gaap:OptionIndexedToIssuersEquityDescriptionTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherLiabilitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-othliab-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-211.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-211.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/211-rules-def.xml11Option Indexed to Issuers Equity Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesEntire footnote for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-21.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-21.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/21-rules-def.xml6Organization, Consolidation and Presentation of Financial Statements and Significant Accounting Policies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureEntire footnote for organization, consolidation and basis of presentation of financial statements disclosure. Use of this concept is discouraged. Rather, individual concepts should be used for disclosing each individual piece.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-19.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-19.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/19-rules-def.xml22Organization, Consolidation and Presentation of Financial Statements Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesDisclosureEntire footnote combining business description, consolidation, basis of presentation, and accounting policies. Use of this is discouraged, separate basis of presentation and significant accounting policies.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1249.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1249.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1249-rules-def.xml10Organization, Consolidation, Basis of Presentation, Business Description, and Accounting Policies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherAssetsRollUpRoll up of details of other assets.DeferredCostsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-528.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-528.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/528-rules-def.xml8Other Assets [Roll Up] (Balance sheet classifications)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherAssetsAndOtherLiabilitiesDisclosure of other assets and other liabilities not separately disclosed on the balance sheet.DeferredCostsNo commentary yet[Abstract]us-gaap:ScheduleOfOtherAssetsAndOtherLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-112.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-112.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/112-rules-def.xml10Other Assets and Other Liabilities [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherAssetsDisclosureEntire footnote for other assets. This disclosure includes other current assets and other noncurrent assets.DeferredCostsNo commentary yet[Level 1 Text Block]us-gaap:OtherAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-110.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-110.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/110-rules-def.xml38Other Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherCurrentAssetsRollUpRoll up of other current assets.DeferredCostsNo commentary yet[Roll Up]us-gaap:ScheduleOfOtherCurrentAssetsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1253.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1253.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1253-rules-def.xml8Other Assets, Current [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherCurrentAssetsDisclosureEntire footnote for other current assets.DeferredCostsNo commentary yet[Level 1 Text Block]us-gaap:OtherCurrentAssetsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssetshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-dccpoa-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1240.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1240.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1240-rules-def.xml2Other Assets, Current, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherComprehensiveIncomeNoncontrollingInterestEntire footnote for information relating to Other Comprehensive Income (OCI) as is applicable to noncontrolling interests.EquityNo commentary yet[Level 1 Text Block]us-gaap:OtherComprehensiveIncomeNoncontrollingInterestTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-222.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-222.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/222-rules-def.xml6Other Comprehensive Income, Noncontrolling Interest, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherIncomeAndOtherExpenseDisclosureEntire footnote for other income or other expense items (both operating and nonoperating).OtherExpensesNo commentary yet[Level 1 Text Block]us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-329.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-329.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/329-rules-def.xml108Other Income and Other Expense Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherLiabilitiesRollUpRoll up of details of current and noncurrent other liabilities.DistinguishingLiabilitiesFromEquityNo commentary yet[Roll Up]us-gaap:OtherLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherLiabilitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-othliab-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-580.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-580.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/580-rules-def.xml16Other Liabilities [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherLiabilitiesDisclosureEntire footnote for other liabilities.DistinguishingLiabilitiesFromEquityNo commentary yet[Level 1 Text Block]us-gaap:OtherLiabilitiesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherLiabilitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-othliab-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-206.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-206.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/206-rules-def.xml48Other Liabilities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherLiabilitiesNoncurrentHierarchyDisclosure of information about noncurrent other liabilities.DistinguishingLiabilitiesFromEquityNo commentary yet[Hierarchy]us-gaap:OtherNoncurrentLiabilitiesTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherLiabilitieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-othliab-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-940.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-940.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/940-rules-def.xml6Other Liabilities, Noncurrent [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherExpenseNonoperatingDetailsHierarchyDisclosure of information about other nonoperating expense.OtherExpensesNo commentary yet[Hierarchy]us-gaap:ScheduleOfOtherNonoperatingExpenseByComponentTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1036.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1036.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1036-rules-def.xml4Other Nonoperating Expense Components [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherNonoperatingIncomeExpenseDisclosure of the components of non-operating income or non-operating expense.OtherExpensesNo commentary yet[Roll Up]us-gaap:ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-330.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-330.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/330-rules-def.xml10Other Nonoperating Income (Expense), by Legal Entity [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherNonoperatingIncomeAndExpenseDisclosureEntire footnote for nonoperating income and expense.OtherExpensesNo commentary yet[Level 1 Text Block]us-gaap:OtherNonoperatingIncomeAndExpenseTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1241.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1241.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1241-rules-def.xml3Other Nonoperating Income and Expense Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherOperatingIncomeAndExpenseDisclosureEntire footnote for operating income and expense.OtherExpensesNo commentary yet[Level 1 Text Block]us-gaap:OtherOperatingIncomeAndExpenseTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1242.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1242.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1242-rules-def.xml3Other Operating Income and Expense Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureOtherOperatingIncomeAndExpenseRollUpRoll up of operating income and expense.OtherExpensesNo commentary yet[Roll Up]us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/OtherExpenseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-otherexp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1261.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1261.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1261-rules-def.xml16Other Operating Income and Expense, Net [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePartnersCapitalDisclosuresEntire footnote for the formation, structure, control and ownership of the partnership.EquityNo commentary yet[Level 1 Text Block]us-gaap:PartnersCapitalNotesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-249.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-249.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/249-rules-def.xml4Partners Capital Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePensionAndOtherPostretirementBenefitsDisclosureEntire footnote for pension and other postretirement benefits.PostEmploymentButPreRetirementCostsNo commentary yet[Level 1 Text Block]us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-261.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-261.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/261-rules-def.xml90Pension and Other Postretirement Benefits Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureAssumptionsUsedDisclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost.PostEmploymentButPreRetirementCostsNo commentary yet[Hierarchy]us-gaap:ScheduleOfAssumptionsUsedTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcrb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-274.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-274.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/274-rules-def.xml29Pension Plans or Other Employee Benefit Plans Assumptions Used, by Plan [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePostemploymentBenefitsEntire footnote for postemployment benefits.PostretirementPensionCostsNo commentary yet[Level 1 Text Block]us-gaap:PostemploymentBenefitsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsPostemploymentBenefitshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcpb-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-288.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-288.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/288-rules-def.xml8Postemployment Benefits Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStockByClassDisclosure of details of information related to each class of stock.EquityNo commentary yet[Hierarchy]us-gaap:ScheduleOfStockByClassTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-233.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-233.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/233-rules-def.xml9Preferred Stock [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePreferredStockEntire footnote for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock.EquityNo commentary yet[Level 1 Text Block]us-gaap:PreferredStockTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-223.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-223.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/223-rules-def.xml3Preferred Stock Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePreferredStockByClassDetail of preferred stock by class of preferred stock.BalanceSheetNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-sfp-cls-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-4.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-4.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/4-rules-def.xml10Preferred Stock, by class, Balance Sheet Parenthetical [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStandardAndExtendedProductWarrantyMovementRollForwardRoll forward (movement) in standard and extended product warranty accrual.ContingenciesNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-730.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-730.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/730-rules-def.xml25Product Warranty Accrual (Standard and Extended Combined) [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureExtendedProductWarrantyAccrualMovementRollForwardRoll forward (movements) in extended product warranty accrual.ContingenciesNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-729.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-729.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/729-rules-def.xml5Product Warranty Accrual, Extended [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStandardProductWarrantyAccrualMovementRollForwardRoll forward (movements) of standard product warranty accrualContingenciesNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-731.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-731.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/731-rules-def.xml14Product Warranty Accrual, Standard [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureProductWarrantyAccrualBalanceSheetClassificationRollUpRoll up of details of standard and extended product warranty accrual by balance sheet classification.ContingenciesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-561.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-561.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/561-rules-def.xml6Product Warranty Accrual, Standard and Extended, Balance Sheet Classification [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStandardProductWarrantyAccrualBalanceSheetClassificationRollUpRoll up of details of standard product warranty accrual by balance sheet classification.ContingenciesNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-562.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-562.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/562-rules-def.xml3Product Warranty Accrual, Standard, Balance Sheet Classification [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureProductWarrantyDisclosureEntire footnote for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:ProductWarrantyDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-177.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-177.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/177-rules-def.xml29Product Warranty Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureExtendedProductWarrantyDisclosureHierarchyDisclosure of information about extended product warranty.ContingenciesNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-907.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-907.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/907-rules-def.xml4Product Warranty, Extended, Other Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStandardProductWarrantyDisclosureHierarchyDisclosure of information about standard product warranty.ContingenciesNo commentary yet[Hierarchy]Detailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-909.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-909.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/909-rules-def.xml1Product Warranty, Standard, Other Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentRollForwardRoll forward (movement) of property, plant, and equipment.PropertyPlantAndEquipmentNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-721.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-721.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/721-rules-def.xml1Property, Plant and Equipment [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentAndIntangibleAssetsDisclosure(Alternative) Entier disclosure for property, plant and equipment together with intangible assets.PropertyPlantAndEquipmentNo commentary yet[Level 1 Text Block]us-gaap:PropertyPlantAndEquipmentAndIntangibleAssetsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1243.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1243.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1243-rules-def.xml20Property, Plant and Equipment and Intangible Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentDisclosureEntire footnote for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.PropertyPlantAndEquipmentNo commentary yet[Level 1 Text Block]us-gaap:PropertyPlantAndEquipmentDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-114.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-114.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/114-rules-def.xml64Property, Plant and Equipment Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentUsefulLivesDisclosure of the estimated useful lives of property, plant and equipment.AccountingPoliciesNo commentary yet[Hierarchy]us-gaap:PropertyPlantAndEquipmentPolicyTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-37.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-37.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/37-rules-def.xml112Property, Plant and Equipment Useful Lives, by Type [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentNetByTypeRollUpRoll up of details of property, plant, and equpment, net, by type. Disclosure of physical assets used in the normal conduct of business and not intended for resale.PropertyPlantAndEquipmentNo commentary yet[Roll Up]us-gaap:PropertyPlantAndEquipmentTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-536.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-536.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/536-rules-def.xml80Property, Plant and Equipment, Net, by Type [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePropertyPlantAndEquipmentSignificantAcquisitionsAndDisposalsDisclosure of all information related to any significant acquisition and disposal.PropertyPlantAndEquipmentNo commentary yet[Level 3 Text Block]us-gaap:PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ppe-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-117.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-117.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/117-rules-def.xml4Property, Plant and Equipment, Significant Acquisitions and Disposals [Table Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosurePurchaseAndSupplyCommitmentExcludingLongTermCommitmentEntire footnote for arrangements in which the entity has agreed to expend funds to procure goods or service from one or more suppliers, or to commit resources to supply goods or services to one or more customers.ContingenciesNo commentary yet[Level 1 Text Block]us-gaap:SignificantPurchaseAndSupplyCommitmentExcludingLongtermCommitmentTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-178.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-178.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/178-rules-def.xml5Purchase and Supply Commitment, Excluding Long-term Commitment, Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureQuarterlyFinancialInformationDuplicateDisclosure of the quarterly financial data in the annual financial statements.InterimReportingNo commentary yet[Hierarchy]us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/InterimReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ir-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-359.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-359.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/359-rules-def.xml20Quarterly Financial Information [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureQuarterlyFinancialInformationEntire footnote for the quarterly financial data in the annual financial statements.InterimReportingNo commentary yet[Level 1 Text Block]us-gaap:QuarterlyFinancialInformationTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/InterimReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ir-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-358.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-358.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/358-rules-def.xml76Quarterly Financial Information Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureLoansAndLeasesReceivableDisclosureEntire footnote of financing receivables and troubled debt restructurings.ReceivablesNo commentary yet[Level 1 Text Block]us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-69.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-69.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/69-rules-def.xml13Receivables (Loans, Notes, Trade, Other) Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureReceivablesDisclosuresDisclosure of numerious items which relate to receivables; claims held for amounts due a entity, excluding financing receivables.ReceivablesNo commentary yetIgnoreDetailhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-51.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-51.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/51-rules-def.xml12Receivables, Other Miscellaneous Information [Hierarchy] (Duplicate of note level text block, ignore)http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureReclassificationAmountDisclosureEntire footnote for any adjustments made during the period to avoid double counting in comprehensive income items displayed as part of net income that also had been displayed as part of other comprehensive income in that period or earlier periods.EquityNo commentary yet[Level 1 Text Block]us-gaap:DisclosureOfReclassificationAmountTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-250.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-250.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/250-rules-def.xml4Reclassification Amount Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureReclassificationsDisclosureEntire footnote for reclassifications.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:ReclassificationsNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1244.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1244.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1244-rules-def.xml5Reclassifications Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRelatedPartyDisclosuresHierarchyEntire footnote of information about related party.RelatedPartyDisclosuresNo commentary yet[Level 1 Text Block]us-gaap:RelatedPartyTransactionsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/RelatedPartyDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rpd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1155.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1155.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1155-rules-def.xml23Related Party Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRelatedPartyTransactionsByRelatedPartyDisclosure for related party transactions.RelatedPartyDisclosuresNo commentary yet[Abstract]us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/RelatedPartyDisclosureshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rpd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-423.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-423.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/423-rules-def.xml12Related Party Transactions, by Related Party [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureReorganizationunderChapter11OfUSBankruptcyCodeDisclosureEntire footnote for the description and amounts of reorganization under Chapter 11 of the US Bankruptcy Code.ReorganizationsNo commentary yet[Level 1 Text Block]us-gaap:ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Reorganizationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-reorg-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-424.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-424.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/424-rules-def.xml28Reorganization under Chapter 11 of US Bankruptcy Code Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureResearchDevelopmentAndComputerSoftwareEntire footnote for research, development, and computer software activities.ResearchAndDevelopmentCostsNo commentary yet[Level 1 Text Block]us-gaap:ResearchDevelopmentAndComputerSoftwareDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ResearchAndDevelopmenthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rd-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-334.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-334.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/334-rules-def.xml2Research, Development, and Computer Software Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestrictedAssetsDisclosureEntire footnote for assets that are restricted in their use, generally by contractual agreements or regulatory requirements.ReceivablesNo commentary yet[Level 1 Text Block]us-gaap:RestrictedAssetsDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthershttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-rlnro-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-54.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-54.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/54-rules-def.xml4Restricted Assets Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestrictionsonDividendsLoansAndAdvancesEntire footnote for a banking or savings institution's compliance during the year with (a) federal and state laws and regulations relative to dividend restrictions and (b) federal laws and regulations relative to insider loans.EquityNo commentary yet[Level 1 Text Block]us-gaap:RestrictionsOnDividendsLoansAndAdvancesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-247.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-247.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/247-rules-def.xml3Restrictions on Dividends, Loans, and Advances Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringAndRelatedActivitiesDisclosureEntire footnote for restructuring and related activities.ExitOrDisposalCostObligationsNo commentary yet[Level 1 Text Block]us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-155.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-155.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/155-rules-def.xml41Restructuring and Related Activities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringCostAndReserveHierarchyDisclosure of information about restucturing cost and reserve.ExitOrDisposalCostObligationsNo commentary yet[Hierarchy]us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-884.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-884.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/884-rules-def.xml1Restructuring and Related Costs, by Restructuring Type [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringChargesRollUpRoll up of details of restructuring charges. Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.ExitOrDisposalCostObligationsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-552.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-552.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/552-rules-def.xml41Restructuring Charges [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringReserveRollForwardRoll forward (movements) of restructuring reserve.ExitOrDisposalCostObligationsNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-725.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-725.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/725-rules-def.xml40Restructuring Reserve [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringReserveRollUpRoll up of details of restructuring reserve.ExitOrDisposalCostObligationsNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-553.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-553.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/553-rules-def.xml1Restructuring Reserve [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRestructuringImpairmentAndOtherActivitiesDisclosureEntire footnote for aggregate costs incurred during the period for restructuring, remediation, implementation, integration and asset impairment activities.ExitOrDisposalCostObligationsNo commentary yet[Level 1 Text Block]us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligationshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-edco-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-156.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-156.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/156-rules-def.xml4Restructuring, Impairment, and Other Activities Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRevenuefromExternalCustomersAndLongLivedAssetsByGeographicalAreasDisclosure of information concerning material long-lived assets located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material.SegmentReportingNo commentary yet[Hierarchy]us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-377.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-377.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/377-rules-def.xml11Revenue from External Customers and Long-Lived Assets, by Geographical Area [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureRevenueRecognitionPolicyDisclosure of revenue recognition policyAccountingPoliciesNo commentary yet[Level 2 Text Block]us-gaap:RevenueRecognitionPolicyTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1217.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1217.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1217-rules-def.xml131Revenue Recognition Policy [Policy Text Block]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureGeographicAreasRevenuesfromExternalCustomersDisclosure of information about revenues from external customers by geographic area.SegmentReportingNo commentary yet[Hierarchy]us-gaap:RevenueFromExternalCustomersByGeographicAreasTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1074.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1074.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1074-rules-def.xml8Revenues from External Customers, by Geographic Area [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSaleLeasebackTransactionDisclosure of leases entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller was accounted for as an operating or capital lease.LeasesSaleAndLeasebackNo commentary yet[Abstract]us-gaap:ScheduleOfSaleLeasebackTransactionsTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-420.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-420.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/420-rules-def.xml19Sale Leaseback Transaction Details, by Transaction [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSaleLeasebackTransactionDisclosureEntire footnote for sale leaseback transactions.LeasesSaleAndLeasebackNo commentary yet[Level 1 Text Block]us-gaap:SaleLeasebackTransactionDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Leaseshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-lea-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-419.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-419.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/419-rules-def.xml5Sale Leaseback Transaction Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSegmentReportingInformationBySegmentDisclosure of the profit or loss and total assets for each reportable segment.SegmentReportingNo commentary yet[Hierarchy]us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-371.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-371.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/371-rules-def.xml24Segment Reporting Information, by Segment [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSegmentReportingDisclosureEntire footnote for reporting segment information.SegmentReportingNo commentary yet[Level 1 Text Block]us-gaap:SegmentReportingDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/SegmentReportinghttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-sr-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-368.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-368.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/368-rules-def.xml97Segment Reporting Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForwardRoll forward (movements, changes) in equity instruments other than nonvested options for share-based compensation arrangement for share-based payment award. The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.StockCompensationNo commentary yet[Roll Forward]Detailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-743.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-743.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/743-rules-def.xml16Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityDisclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.StockCompensationNo commentary yet[Roll Forward]us-gaap:ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-308.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-308.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/308-rules-def.xml5Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSharebasedCompensationSharesAuthorizedunderStockOptionPlansByExercisePriceRangeDisclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.StockCompensationNo commentary yet[Abstract]us-gaap:ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-321.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-321.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/321-rules-def.xml7Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSharebasedCompensationStockOptionsActivityDisclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.StockCompensationNo commentary yet[Roll Forward]us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-312.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-312.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/312-rules-def.xml18Share-based Compensation, Stock Options, Activity [Roll Forward]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSharebasedPaymentAwardStockOptionsValuationAssumptionsDisclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.StockCompensationNo commentary yet[Hierarchy]us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-314.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-314.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/314-rules-def.xml19Share-based Payment Award, Stock Options, Valuation Assumptions [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureShareholdersEquityAndSharebasedPaymentsEntire footnote for accounts comprising shareholders equity, comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income, and compensation-related costs for equity-based compensation.StockCompensationNo commentary yet[Level 1 Text Block]us-gaap:ShareholdersEquityAndShareBasedPaymentsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-crcsbp-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-292.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-292.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/292-rules-def.xml4Shareholders Equity and Share-based Payments Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureShortTermDebtDuplicateEntire footnote for short-term debt.DebtNo commentary yet[Level 1 Text Block]us-gaap:ShortTermDebtTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Debthttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-debt-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-191.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-191.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/191-rules-def.xml9Short-term Debt Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSignificantAccountingPoliciesEntire footnote for all significant accounting policies of the reporting entity.AccountingPoliciesNo commentary yet[Level 1 Text Block]us-gaap:SignificantAccountingPoliciesTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/AccountingPolicieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ap-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-33.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-33.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/33-rules-def.xml68Significant Accounting Policies Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStatementOfComprehensiveIncomeEconomic entity statement of comprehensive income. (Alternativly, could combine with income statement).ComprehensiveIncomeNo commentary yet[Roll Up]Statementhttp://fasb.org/us-gaap/role/statement/StatementOfOtherComprehensiveIncomehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-soc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-17.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-17.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/17-rules-def.xml19Statement of Comprehensive Incomehttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStatementOfIncomeAndComprehensiveIncomeCombined statements of income and comprehensive income. Allowed alternativeIncomeStatementNo commentary yet[Roll Up]Detailhttp://fasb.org/us-gaap/role/statement/StatementOfOtherComprehensiveIncomehttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-soc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1215.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1215.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1215-rules-def.xml1Statement of Income and Comprehensive Income [Roll Up]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureStockholdersEquityNoteDisclosureEntire footnote for shareholders equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable).EquityNo commentary yet[Level 1 Text Block]us-gaap:StockholdersEquityNoteDisclosureTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/Equityhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-equity-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-231.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-231.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/231-rules-def.xml72Stockholders Equity Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSubsequentEventProFormaBusinessCombinationsDisclosureEntire footnote for pro forma information for significant acquisitions or disposals that occurred or are probable to occur subsequent to balance sheet date.SubsequentEventsNo commentary yet[Level 1 Text Block]us-gaap:SubsequentEventProFormaBusinessCombinationsNoteLevelhttp://fasb.org/us-gaap/role/disclosure/SubsequentEventshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-se-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-1245.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-1245.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/1245-rules-def.xml3Subsequent Event Pro Forma Business Combinations Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSubsequentEventsEntire footnote for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.SubsequentEventsNo commentary yet[Level 1 Text Block]us-gaap:SubsequentEventsTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/SubsequentEventshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-se-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-427.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-427.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/427-rules-def.xml36Subsequent Events Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSupplementalBalanceSheetDisclosuresEntire footnote for supplemental balance sheet disclosures, including details and amounts for assets, liabilities, and equity.OrganizationNo commentary yet[Level 1 Text Block]us-gaap:SupplementalBalanceSheetDisclosuresTextBlockNoteLevelhttp://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-ocpfs-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-22.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-22.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/22-rules-def.xml42Supplemental Balance Sheet Note [Note Level]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureSupplyCommitmentDisclosure of arrangements in which the entity has committed resources to supply goods or services to a customer.CommitmentsNo commentary yet[Hierarchy]us-gaap:SupplyCommitmentTableTextBlockDetailhttp://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencieshttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-dis-cc-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-164.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-164.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/164-rules-def.xml28Supply Commitments, by Commitment [Hierarchy]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureTemporaryEquityByClassDetail of temporary equity by class of temporary equity.BalanceSheetNo commentary yet[Abstract]us-gaap:TemporaryEquityTableTextBlockDetailhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedhttp://www.xbrlsite.com/2015/us-GAAP-2015-AsReleased/us-gaap-stm-sfp-cls-pre-2015-01-31_ModelStructure.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Prototypes/Prototype-3.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xml/Disclosures/Exemplars/Disclosure-3.xmlhttp://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Disclosures/BusinessRules/3-rules-def.xml9Temporary Equity, by Class [Abstract]http://www.xbrlsite.com/2015/fro/us-gaap/xbrl/Ontology/fro.xsd#fro_DisclosureTreasuryStockEntire footnote for an entity's treasury stock.EquityNo commentary yet[Level 1 Text 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