| Organization, Consolidation and Presentation of Financial Statements [Abstract] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Schedule of Accounts Receivable, Net | Accounts receivable, net consists of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Billed, net of provision for doubtful accounts of $40 million and $22 million | $ | 1,789 |
| | $ | 1,051 |
| Accrued and unbilled, at estimated net realizable value | 291 |
| | 207 |
| Accounts receivable, net | $ | 2,080 |
| | $ | 1,258 |
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Schedule of Credit Losses for Financing Receivables, Current | Accounts receivable are stated at estimated net realizable values. The provisions shown below as of the end of each period, are recorded as the amounts considered by management to be sufficient to meet probable future losses related to uncollectible accounts. | | | | | | | | | | | | | | December 31,
2016 | | December 31,
2015 | | December 31,
2014 | Balance at beginning of year | $ | 22 |
| | $ | 12 |
| | $ | 13 |
| Additions charged to costs and expenses | 36 |
| | 5 |
| | 4 |
| Charges to other accounts - acquisitions | 8 |
| | 11 |
| | — |
| Deductions / other movements | (27 | ) | | (7 | ) | | (6 | ) | Foreign exchange differences | 1 |
| | 1 |
| | 1 |
| Balance at end of year | $ | 40 |
| | $ | 22 |
| | $ | 12 |
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Schedule of Prepaid and Other Current Assets | Prepaid and other current assets consist of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Prepayments and accrued income | $ | 131 |
| | $ | 86 |
| Derivatives and investments | 32 |
| | 29 |
| Deferred compensation plan assets | 15 |
| | 20 |
| Retention incentives | 7 |
| | 14 |
| Corporate income and other taxes | 97 |
| | 66 |
| Other current assets | 55 |
| | 40 |
| Total prepaid and other current assets | $ | 337 |
| | $ | 255 |
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Schedule of Other Non-current Assets | Other non-current assets consist of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Prepayments and accrued income | $ | 15 |
| | $ | 23 |
| Deferred compensation plan assets | 111 |
| | 102 |
| Deferred tax assets | 50 |
| | 76 |
| Accounts receivable, net | 27 |
| | 30 |
| Other investments | 30 |
| | 42 |
| Other non-current assets | 120 |
| | 25 |
| Total other non-current assets | $ | 353 |
| | $ | 298 |
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Schedule of Other Current Liabilities | Other current liabilities consist of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Accounts payable | $ | 117 |
| | $ | 75 |
| Income and other taxes payable | 91 |
| | 45 |
| Contingent and deferred consideration on acquisition | 53 |
| | 68 |
| Payroll related liabilities | 200 |
| | 82 |
| Derivatives | 80 |
| | 31 |
| Third party commissions | 184 |
| | 177 |
| Other current liabilities | 151 |
| | 125 |
| Total other current liabilities | $ | 876 |
| | $ | 603 |
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Analysis of Movements on Provisions for Liabilities | Provision for liabilities consists of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Claims, lawsuits and other proceedings | $ | 456 |
| | $ | 205 |
| Other provisions | 119 |
| | 90 |
| Total provision for liabilities | $ | 575 |
| | $ | 295 |
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Schedule of Other Non-Current Liabilities | Other non-current liabilities consist of the following: | | | | | | | | | | December 31,
2016 | | December 31,
2015 | Incentives from lessors | $ | 133 |
| | $ | 175 |
| Deferred compensation plan liability | 111 |
| | 102 |
| Contingent and deferred consideration on acquisitions | 89 |
| | 156 |
| Derivatives | 51 |
| | 27 |
| Other non-current liabilities | 148 |
| | 73 |
| Total other non-current liabilities | $ | 532 |
| | $ | 533 |
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