Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001306830 (http://www.sec.gov/CIK)

Compensation and Retirement Disclosure [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Compensation and Retirement Disclosure [Abstract]
Schedule of Contributions to Multiemployer Defined Benefit Pension Plans	Contributions made by the Company to the German multiemployer plan are as follows:   Year Ended December 31,   2016   2015   2014   (In $ millions) Multiemployer defined benefit plan 7   6   8
Schedule of Postemployment Obligations	Postemployment obligations are as follows:   As of December 31,   2016   2015   (In $ millions) Postemployment benefits 9   11
Schedule of Contributions to Defined Contribution Plans	The amount of costs recognized for the Company's defined contribution plans are as follows:   Year Ended December 31,   2016   2015   2014   (In $ millions) Defined contribution plans 43   44   40
Schedule of Company's Pension and Post Retirement Benefit Plans	Summarized information on the Company's pension and postretirement benefit plans is as follows:   Pension Benefits As of December 31,   Postretirement Benefits As of December 31,   2016   2015   2016   2015   (In $ millions) Change in Projected Benefit Obligation               Projected benefit obligation as of beginning of period 3,635   3,915   66   85 Service cost 8   12   —   1 Interest cost 113   139   2   3 Participant contributions —   —   —   1 Plan amendments —   —   —   (6 ) Net actuarial (gain) loss(1) 102   (141 )   3   (8 ) Settlements (1 )   —   —   — Benefits paid (232 )   (234 )   (4 )   (5 ) Federal subsidy on Medicare Part D —   —   —   — Curtailments —   (1 )   —   — Special termination benefits 3   2   —   — Exchange rate changes (18 )   (65 )   —   (5 ) Other —   8   —   — Projected benefit obligation as of end of period 3,610   3,635   67   66 Change in Plan Assets               Fair value of plan assets as of beginning of period 2,508   2,789   —   — Actual return on plan assets 177   (67 )   —   — Employer contributions 346   59   4   4 Participant contributions —   —   —   1 Settlements (1 )   —   —   — Benefits paid(2) (232 )   (234 )   (4 )   (5 ) Exchange rate changes (14 )   (39 )   —   — Fair value of plan assets as of end of period 2,784   2,508   —   — Funded status as of end of period (826 )   (1,127 )   (67 )   (66 ) Amounts Recognized in the Consolidated Balance Sheets Consist of:               Noncurrent Other assets 22   16   —   — Current Other liabilities (25 )   (25 )   (5 )   (4 ) Benefit obligations (823 )   (1,118 )   (62 )   (62 ) Net amount recognized (826 )   (1,127 )   (67 )   (66 ) Amounts Recognized in Accumulated Other Comprehensive Income Consist of:               Net actuarial (gain) loss(3) 18   16   —   — Prior service (benefit) cost (1 )   (1 )   (1 )   (4 ) Net amount recognized(4) 17   15   (1 )   (4 ) ______________________________ (1)  Primarily relates to change in discount rates. (2)  Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2016 and 2015, respectively. (3)  Relates to the pension plans of the Company's equity method investments. (4)  Amount shown net of an income tax benefit of $4 million and $3 million as of December 31, 2016 and 2015, respectively, in the consolidated statements of equity (Note 17).
Schedule of Percentage of US and International Projected Benefit Obligation	The percentage of US and international projected benefit obligation at the end of the period is as follows:   Pension Benefits As of December 31,   Postretirement Benefits As of December 31,   2016   2015   2016   2015   (In percentages) US plans 85   86   57   61 International plans 15   14   43   39  Total 100   100   100   100
Schedule of Percentage of US and International Fair Value of Plan Assets	The percentage of US and international fair value of plan assets at the end of the period is as follows:   Pension Benefits As of December 31,   2016   2015   (In percentages) US plans 88   87 International plans 12   13 Total 100   100
Schedule of Pension Plans with Projected Benefit Obligations in Excess of Plan Assets	Pension plans with projected benefit obligations in excess of plan assets are as follows:   As of December 31,   2016   2015   (In $ millions) Projected benefit obligation 3,559   3,588 Fair value of plan assets 2,711   2,445
Schedule of Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets	Included in the above table are pension plans with accumulated benefit obligations in excess of plan assets as follows:   As of December 31,   2016   2015   (In $ millions) Accumulated benefit obligation 3,538   3,570 Fair value of plan assets 2,708   2,442
Schedule of Accumulated Benefit Obligation for All Defined Benefit Pension Plans	The accumulated benefit obligation for all defined benefit pension plans is as follows:   As of December 31,   2016   2015   (In $ millions) Accumulated benefit obligation 3,591   3,619
Schedule of Net Periodic Benefit Costs	The components of net periodic benefit cost are as follows:   Pension Benefits Year Ended December 31,   Postretirement Benefits Year Ended December 31,   2016   2015   2014   2016   2015   2014   (In $ millions) Service cost 8   12   11   —   1   1 Interest cost 113   139   168   2   3   4 Expected return on plan assets (177 )   (209 )   (214 )   —   —   — Amortization of prior service cost / (credit) —   —   —   (3 )   —   (83 ) Recognized actuarial (gain) loss 101 (1)  134 (2)  339 (3)  2   (7 )   11 Curtailment (gain) loss —   (3 )   —   —   —   — Settlement (gain) loss —   —   (78 )   —   —   — Special termination benefit 3   2   —   —   —   — Total 48   75   226   1   (3 )   (67 ) ______________________________ (1)  Includes a gain of $48 million reflecting the incorporation of the RP-2016 mortality tables into the actuarial assumptions for the US pension plans. (2)  Includes a gain of $62 million reflecting the incorporation of the RP-2015 mortality tables into the actuarial assumptions for the US pension plans. (3)  Includes a loss of $53 million reflecting the incorporation of the RP-2014 mortality tables into the actuarial assumptions for the US pension plans.
Schedule of Amortization of Accumulated Other Comprehensive Income (Loss), Net Into Net Periodic Benefit Cost	Amortization of Accumulated other comprehensive income (loss), net into net periodic benefit cost in 2017 is expected to be as follows:   Pension Benefits   Postretirement Benefits   (In $ millions) Prior service cost —   (2 )
Schedule of Nonqualified Pension Plans Funded with Nonqualified Trusts	The Company maintains nonqualified pension plans funded with nonqualified trusts for certain US employees as follows:   As of December 31,   2016   2015   (In $ millions) Nonqualified Trust Assets       Marketable securities, at fair value 30   30 Noncurrent Other assets, consisting of insurance contracts 49   55 Nonqualified Pension Obligations       Current Other liabilities 22   22 Benefit obligations 241   246
Schedule of Expense Related to Nonqualified Pension Plans Included in Net Periodic Benefit Cost, Excluding Returns on Assets	Expense relating to the nonqualified pension plans included in net periodic benefit cost, excluding returns on the assets held by the nonqualified trusts, is as follows:   Year Ended December 31,   2016   2015   2014   (In $ millions) Total 18   — (1)  43 ______________________________ (1)  Actuarial gain offset interest cost.
Schedule of Principle Weighted Average Assumptions Used to Determine Benefit Obligations and Benefit Cost	The principal weighted average assumptions used to determine benefit obligation are as follows:   Pension Benefits As of December 31,   Postretirement Benefits As of December 31,   2016   2015   2016   2015   (In percentages) Discount Rate Obligations               US plans 3.9   4.2   3.8   4.0 International plans 2.1   2.6   3.3   3.6 Combined 3.7   4.0   3.4   3.7 Rate of Compensation Increase               US plans N/A   N/A         International plans 2.8   2.7         Combined 2.8   2.7         The principal weighted average assumptions used to determine net periodic benefit cost are as follows:   Pension Benefits Year Ended December 31,   Postretirement Benefits Year Ended December 31,   2016   2015   2014   2016   2015   2014   (In percentages) Discount Rate Obligations                       US plans 4.2   3.9   4.7   4.0   3.7   4.3 International plans 2.6   2.4   3.7   3.6   3.5   4.5 Combined 4.0   3.7   4.6   3.9   3.6   4.4 Discount Rate Service Cost(1)                       US plans 4.5   3.9   4.7   4.2   3.7   4.3 International plans 3.1   2.4   3.7   3.8   3.5   4.5 Combined 3.1   3.7   4.6   3.8   3.6   4.4 Discount Rate Interest Cost(1)                       US plans 3.4   3.9   4.7   3.1   3.7   4.3 International plans 2.2   2.4   3.7   3.1   3.5   4.5 Combined 3.2   3.7   4.6   3.1   3.6   4.4 Expected Return on Plan Assets                       US plans 7.5   8.0   8.5             International plans 6.1   6.0   6.2             Combined 7.3   7.8   8.2             Rate of Compensation Increase                       US plans N/A   N/A   3.0             International plans 2.7   2.8   2.8             Combined 2.7   2.8   3.0             ______________________________ (1)  Weighted-average discount rates in 2016 reflect the adoption of the full yield curve approach.
Schedule of Health Care Cost Trend Rates	The Company's health care cost trend assumptions for US postretirement medical plan's net periodic benefit cost are as follows:   As of December 31,   2016   2015   2014   (In percentages, except year) Health care cost trend rate assumed for next year 9.5   10.0   7.0 Health care cost trend ultimate rate 5.0   5.0   5.0 Health care cost trend ultimate rate year 2026   2026   2020
Schedule of Impact of One-Percentage-Point Change in Assumed Health Care Cost Trend	The impact of a one percentage point change in the assumed health care cost trend is as follows:   Trend Rate Change   Decreases 1%   Increases 1%   (In $ millions) Postretirement obligations 2   2 Service and interest cost —   —
Schedule of Weighted Average Target Asset Allocations	The weighted average target asset allocations for the Company's pension plans in 2016 are as follows:   US Plans   International Plans   (In percentages) Bonds - domestic to plans 54   58 Equities - domestic to plans 26   16 Equities - international to plans 20   — Other —   26 Total 100   100
Schedule of Fair Values of Pension Plan Assets	Fair Value Measurement   Quoted Prices in Active Markets for Identical Assets (Level 1)   Significant Other Observable Inputs (Level 2)   Total   As of December 31,   2016   2015   2016   2015   2016   2015   (In $ millions) Assets                       Cash and cash equivalents 2   4   —   —   2   4 Derivatives                       Swaps —   —   2   25   2   25 Other —   —   —   —   —   — Equity securities                       US companies 260   241   —   —   260   241 International companies 345   327   —   —   345   327 Fixed income                       Corporate debt —   —   798   692   798   692 Treasuries, other debt 37   25   793   742   830   767 Mortgage backed securities —   —   7   5   7   5 Insurance contracts —   —   31   32   31   32 Other 24   18   —   —   24   18 Total investments, at fair value(1) 668   615   1,631   1,496   2,299   2,111 Liabilities                       Derivatives                       Swaps —   —   2   25   2   25 Other —   —   1   —   1   — Total liabilities —   —   3   25   3   25 Total net assets(2) 668   615   1,628   1,471   2,296   2,086 ______________________________ (1)  In accordance with ASU 2015-07 (Note 2), certain investments that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy. Total investments, at fair value, for the year ended December 31, 2016 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $195 million, $134 million and $149 million, respectively. Total investments, at fair value, for the year ended December 31, 2015 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $251 million, $117 million and $43 million, respectively. (2)  Total net assets excludes non-financial plan receivables and payables of $20 million and $10 million, respectively, as of December 31, 2016 and $25 million and $14 million, respectively, as of December 31, 2015. Non-financial items include due to/from broker, interest receivables and accrued expenses.
Schedule of Company Commitments to Fund Benefit Obligations	Benefit obligation funding is as follows:   Total Expected 2017   (In $ millions) Cash contributions to defined benefit pension plans 20 Benefit payments to nonqualified pension plans 22 Benefit payments to other postretirement benefit plans 4
Schedule of Pension Benefits Expected to be Paid from the Plans or From the Company's Assets	Pension and postretirement benefits expected to be paid are as follows:   Pension Benefit Payments(1)   Company Portion of Postretirement Benefit Cost(2)   (In $ millions) 2017 233   5 2018 231   5 2019 229   4 2020 228   4 2021 225   4 2022-2026 1,093   19 ______________________________ (1)  Payments are expected to be made primarily from plan assets. (2)  Payments are expected to be made primarily from Company assets.