Benefit Obligations (Tables)

12 Months Ended

Dec. 31, 2015

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,
	2015	2014	2013
	(In $ millions)
Multiemployer defined benefit plan	6	8	8

Schedule of Postemployment Obligations

Postemployment obligations are as follows:

	As of December 31,
	2015	2014
	(In $ millions)
Postemployment benefits	11	12

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,
	2015	2014	2013
	(In $ millions)
Defined contribution plans	44	40	19

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,
	2015		2014		2015		2014
	(In $ millions)
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period	3,915		3,799		85		136
Service cost	12		11		1		1
Interest cost	139		168		3		4
Participant contributions	—		—		1		5
Plan amendments	—		(1	)	(6	)	(5	)
Net actuarial (gain) loss(1)	(141	)	458		(8	)	11
Settlements	—		(221	)	—		—
Benefits paid	(234	)	(232	)	(5	)	(61	)
Federal subsidy on Medicare Part D	—		—		—		(2	)
Curtailments	(1	)	—		—		—
Special termination benefits	2		—		—		—
Exchange rate changes	(65	)	(68	)	(5	)	(4	)
Other	8		1		—		—
Projected benefit obligation as of end of period	3,635		3,915		66		85
Change in Plan Assets
Fair value of plan assets as of beginning of period	2,789		2,709		—		—
Actual return on plan assets	(67	)	327		—		—
Employer contributions	59		165		4		56
Participant contributions	—		—		1		5
Settlements	—		(143	)	—		—
Benefits paid(2)	(234	)	(232	)	(5	)	(61	)
Exchange rate changes	(39	)	(37	)	—		—
Fair value of plan assets as of end of period	2,508		2,789		—		—
Funded status as of end of period	(1,127	)	(1,126	)	(66	)	(85	)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets	16		16		—		—
Current Other liabilities	(25	)	(23	)	(4	)	(5	)
Benefit obligations	(1,118	)	(1,119	)	(62	)	(80	)
Net amount recognized	(1,127	)	(1,126	)	(66	)	(85	)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss(3)	16		16		—		—
Prior service (benefit) cost	(1	)	(4	)	(4	)	3
Net amount recognized(4)	15		12		(4	)	3

______________________________

⁽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, 2015 and 2014, respectively.

⁽³⁾  Relates to the pension plans of the Company's equity method investments.

⁽⁴⁾  Amount shown net of an income tax benefit of $3 million and $4 million as of December 31, 2015 and 2014, 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,
	2015	2014	2015	2014
	(In percentages)
US plans	86	85	61	59
International plans	14	15	39	41
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,
	2015	2014
	(In percentages)
US plans	87	88
International plans	13	12
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,
	2015	2014
	(In $ millions)
Projected benefit obligation	3,588	3,866
Fair value of plan assets	2,445	2,724

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,
	2015	2014
	(In $ millions)
Accumulated benefit obligation	3,570	3,833
Fair value of plan assets	2,442	2,713

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,
	2015	2014
	(In $ millions)
Accumulated benefit obligation	3,619	3,892

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,
	2015			2014			2013		2015		2014		2013
	(In $ millions)
Service cost	12			11			34		1		1		2
Interest cost	139			168			154		3		4		9
Expected return on plan assets	(209	)		(214	)		(223	)	—		—		—
Amortization of prior service cost / (credit)	—			—			1		—		(83	)	(12	)
Recognized actuarial (gain) loss	134		(1)	339		(2)	(67	)	(7	)	11		(37	)
Curtailment (gain) loss	(3	)		—			(61	)	—		—		—
Settlement (gain) loss	—			(78	)		9		—		—		—
Special termination benefit	2			—			—		—		—		—
Total	75			226			(153	)	(3	)	(67	)	(38	)

______________________________

⁽¹⁾  Includes a gain of $62 million reflecting the incorporation of the RP-2015 mortality tables into the actuarial assumptions for the US pension plans.

⁽²⁾  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 2016 is expected to be as follows:

	Pension Benefits	Postretirement Benefits
	(In $ millions)
Prior service cost	—	(3	)

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,
	2015	2014
	(In $ millions)
Nonqualified Trust Assets
Marketable securities, at fair value	30	32
Noncurrent Other assets, consisting of insurance contracts	55	56
Nonqualified Pension Obligations
Current Other liabilities	22	22
Benefit obligations	246	268

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,
	2015		2014	2013
	(In $ millions)
Total	—	(1)	43	6

______________________________

⁽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,
	2015	2014	2015	2014
	(In percentages)
Discount Rate Obligations
US plans	4.2	3.9	4.0	3.7
International plans	2.6	2.4	3.6	3.5
Combined	4.0	3.7	3.7	3.6
Rate of Compensation Increase
US plans	N/A	N/A
International plans	2.7	2.8
Combined	2.7	2.8

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,
	2015	2014	2013	2015	2014	2013
	(In percentages)
Discount Rate Obligations
US plans	3.9	4.7	3.8	3.7	4.3	3.4
International plans	2.4	3.7	3.6	3.5	4.5	3.8
Combined	3.7	4.6	3.8	3.6	4.4	3.5
Expected Return on Plan Assets
US plans	8.0	8.5	8.5
International plans	6.0	6.2	5.8
Combined	7.8	8.2	8.0
Rate of Compensation Increase
US plans	N/A	3.0	4.0
International plans	2.8	2.8	2.9
Combined	2.8	3.0	3.8

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,
	2015	2014	2013
	(In percentages, except year)
Health care cost trend rate assumed for next year	10.0	7.0	7.5
Health care cost trend ultimate rate	5.0	5.0	5.0
Health care cost trend ultimate rate year	2026	2020	2017

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 2015 are as follows:

	US Plans	International Plans
	(In percentages)
Bonds - domestic to plans	54	71
Equities - domestic to plans	26	19
Equities - international to plans	20	3
Other	—	7
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,
	2015	2014	2015	2014	2015	2014
	(In $ millions)
Assets
Cash and cash equivalents	4	6	—	—	4	6
Derivatives
Swaps	—	—	25	275	25	275
Other	—	—	—	2	—	2
Equity securities
US companies	241	249	—	—	241	249
International companies	327	383	—	—	327	383
Fixed income
Corporate debt	—	—	692	639	692	639
Treasuries, other debt	25	49	742	708	767	757
Mortgage backed securities	—	—	5	31	5	31
Securities lending collateral	—	6	—	—	—	6
Insurance contracts	—	—	32	34	32	34
Other	18	16	—	2	18	18
Total investments, at fair value(1)	615	709	1,496	1,691	2,111	2,400
Liabilities
Derivatives
Swaps	—	—	25	270	25	270
Other	—	—	—	2	—	2
Obligations under securities lending	—	6	—	—	—	6
Total liabilities	—	6	25	272	25	278
Total net assets(2)	615	703	1,471	1,419	2,086	2,122

______________________________

⁽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, 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. Total investments, at fair value, for the year ended December 31, 2014 excludes investments in common/collective trusts, registered investment companies and short-term investment funds with fair values of $278 million, $133 million and $263 million, respectively.

⁽²⁾  Total net assets excludes non-financial plan receivables and payables of $25 million and $14 million, respectively, as of December 31, 2015 and $19 million and $26 million, respectively, as of December 31, 2014. 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 2016
	(In $ millions)
Cash contributions to defined benefit pension plans	23
Benefit payments to nonqualified pension plans	22
Benefit payments to other postretirement benefit plans	5

Schedule of Pension Benefits Expected to be Paid from the Plans or From the Company's Assets

Pension benefits and postretirement benefit cost expected to be paid are as follows:

	Pension Benefit Payments(1)	Company Portion of Postretirement Benefit Cost(2)
	(In $ millions)
2016	231	5
2017	230	5
2018	229	5
2019	228	4
2020	227	4
2021-2025	1,111	21

______________________________

⁽¹⁾  Payments are expected to be made primarily from plan assets.

⁽²⁾  Payments are expected to be made primarily from Company assets.