| Disclosure Descriptive Information |
| Label: | Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Roll Up] |
| Name: | EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationRollUp |
| Parent Topic: | IncomeTaxes |
| Documentation: | Roll up of details of percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
| Commentary: | This disclosure could be provided using amounts or percentages. Is there a separate disclosure for the amount? |
| Status: | |
| US GAAP XBRL Taxonomy Text Block: | us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock |
| Human Readable Examples: | List of human readable examples |
| Machine Readable Examples: | List of machine readable examples |
| Business rules (machine readable): | XBRL Definition Relations |
| US GAAP XBRL Taxonomy Network: | http://fasb.org/us-gaap/role/disclosure/IncomeTaxes | XML | HTML |
| References to Accounting Standards Codification (ASC) |
| Item | Description | Reference |
|---|---|---|
| 1 | FASB: Topic:740 Subtopic:10 Section:50 Paragraph:12 | http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 |
| Example Disclosure |
| Prototype of Disclosure |
| Line | Label | Object Class (Data type) | Period Type | Balance | Report Element Name |
|---|---|---|---|---|---|
| 1 | Income Taxes [Abstract] | Abstract | us-gaap:IncomeTaxDisclosureAbstract | ||
| 2 | Tax provision based on the federal statutory rate | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | |
| 3 | Release of valuation allowances | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | |
| 4 | Use of non-operating losses against U.S. taxable income, taxes | Concept (Percent) | For Period | ddd:UseOfNonOperatingLossesAgainstUSTaxableIncomeTaxes | |
| 5 | Deemed income related to foreign operations | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings | |
| 6 | Income not subject to tax | Concept (Percent) | For Period | ddd:EffectiveIncomeTaxRateReconciliationIncomeNotSubjectToTax | |
| 7 | State taxes, net of federal benefit, before valuation allowance | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal | |
| 8 | Return to provision adjustments, foreign current and deferred balances | Concept (Percent) | For Period | ddd:ReturnToProvisionAdjustmentsForeignCurrentAndDeferredBalances | |
| 9 | Foreign income tax rate differential | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | |
| 10 | Other | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments | |
| 11 | Effective tax rate | Concept (Percent) | For Period | us-gaap:EffectiveIncomeTaxRateContinuingOperations |
| Business Rules Summary |
| From | Arcrole (predicate) | To |
|---|---|---|
| disclosures:EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationRollUp | rules-arcroles:disclosure-equivalentTextblock | us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock |
| disclosures:EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationRollUp | rules-arcroles:disclosure-hasConceptArrangementPattern | fro:RollUp |
| disclosures:EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationRollUp | rules-arcroles:disclosure-requiresConcept | us-gaap:EffectiveIncomeTaxRateContinuingOperations |
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