Benefit Obligations (Tables)

12 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Contributions to Defined Contribution Plans and Multiemployer Defined Benefit Pension Plans

Contributions to the Company's defined contribution plans and multiemployer plans are as follows:

	Year Ended December 31,
	2012	2011	2010
	(In $ millions)
Defined contribution plans	17	15	14
Multiemployer pension plan	6	6	6

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				Postretirement Benefits
	As of December 31,				As of December 31,
	2012		2011		2012		2011
	(In $ millions)
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period	3,761		3,533		281		282
Service cost	28		28		1		1
Interest cost	170		182		11		13
Participant contributions	—		—		22		21
Plan amendments	—		(3	)	4		—
Net actuarial (gain) loss(1)	466		274		12		13
Divestitures	—		—		—		—
Settlements	—		(1	)	—		—
Benefits paid	(242	)	(236	)	(46	)	(53	)
Federal subsidy on Medicare Part D	—		—		6		4
Curtailments	—		(1	)	—		—
Exchange rate changes	16		(15	)	1		—
Projected benefit obligation as of end of period	4,199		3,761		292		281
Change in Plan Assets
Fair value of plan assets as of beginning of period	2,562		2,460		—		—
Actual return on plan assets	294		169		—		—
Employer contributions	270		181		24		32
Participant contributions	—		—		22		21
Divestitures	—		—		—		—
Settlements	—		—		—		—
Benefits paid(3)	(242	)	(236	)	(46	)	(53	)
Exchange rate changes	12		(12	)	—		—
Fair value of plan assets as of end of period	2,896		2,562		—		—
Funded Status as of end of period	(1,303	)	(1,199	)	(292	)	(281	)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets	26		27		—		—
Current Other liabilities	(23	)	(22	)	(24	)	(25	)
Benefit obligations	(1,306	)	(1,204	)	(268	)	(256	)
Net amount recognized	(1,303	)	(1,199	)	(292	)	(281	)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss(2)	1,326		994		(21	)	(35	)
Prior service (benefit) cost	6		7		4		1
Net amount recognized	1,332		1,001		(17	)	(34	)

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⁽¹⁾  Primarily relates to change in discount rates.

⁽²⁾  Amount includes accumulated other comprehensive losses of $9 million and gains of $1 million as of December 31, 2012 and 2011, respectively, related to the Company's equity method investments' pension plans. Amount shown net of an income tax benefit of $307 million and $203 million as of December 31, 2012 and 2011, respectively, in the consolidated statements of equity (Note 16).

⁽³⁾  Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2012 and 2011, respectively.

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		Postretirement Benefits
	As of December 31,		As of December 31,
	2012	2011	2012	2011
	(In percentages)
US plans	84	86	88	88
International plans	16	14	12	12
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,
	2012	2011
	(In percentages)
US plans	83	82
International plans	17	18
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,
	2012	2011
	(In $ millions)
Projected benefit obligation	3,986	3,540
Fair value of plan assets	2,657	2,314

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,
	2012	2011
	(In $ millions)
Accumulated benefit obligation	3,881	3,468
Fair value of plan assets	2,654	2,300

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,
	2012	2011
	(In $ millions)
Accumulated benefit obligation	4,096	3,697

Schedule of Net Periodic Benefit Costs

The components of net periodic benefit costs are as follows:

	Pension Benefits						Postretirement Benefits
	Year Ended December 31,						Year Ended December 31,
	2012		2011		2010		2012		2011		2010
	(In $ millions)
Service cost	28		28		30		1		1		1
Interest cost	170		182		188		11		13		15
Expected return on plan assets	(206	)	(202	)	(197	)	—		—		—
Amortization of prior service cost	1		1		1		1		—		—
Recognized actuarial (gain) loss	57		29		8		(1	)	(2	)	(4	)
Curtailment (gain) loss	—		(2	)	(4	)	—		—		—
Settlement (gain) loss	—		—		—		—		—		—
Special termination benefits	—		—		—		—		—		—
Total	50		36		26		12		12		12

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 2013 is expected to be as follows:

	Pension Benefits	Postretirement Benefits
	(In $ millions)
Net actuarial (gain) loss	93	—
Prior service cost	1	—
Total	94	—

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,
	2012	2011
	(In $ millions)
Nonqualified Trust Assets
Marketable securities, at fair value	53	64
Noncurrent Other assets, consisting of insurance contracts	66	69
Nonqualified Pension Obligations
Current Other liabilities	22	21
Benefit obligations	264	248

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,
	2012	2011	2010
	(In $ millions)
Total	17	18	18

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		Postretirement Benefits
	As of December 31,		As of December 31,
	2012	2011	2012	2011
	(In percentages)
Discount Rate Obligations
US plans	3.80	4.60	3.40	4.30
International plans	3.55	4.70	3.82	4.10
Combined	3.77	4.61	3.45	4.28
Rate of Compensation Increase
US plans	4.00	4.00
International plans	2.85	2.63
Combined	3.81	3.58

The principal weighted average assumptions used to determine benefit cost are as follows:

	Pension Benefits			Postretirement Benefits
	Year Ended December 31,			Year Ended December 31,
	2012	2011	2010	2012	2011	2010
	(In percentages)
Discount Rate Obligations
US plans	4.60	5.30	5.90	4.30	4.90	5.50
International plans	4.70	5.05	5.41	4.04	4.95	5.49
Combined	4.61	5.26	5.83	4.27	4.91	5.50
Expected Return on Plan Assets
US plans	8.50	8.50	8.50
International plans	6.00	6.00	6.07
Combined	8.06	8.06	8.06
Rate of Compensation Increase
US plans	4.00	4.00	4.00
International plans	2.88	2.66	2.94
Combined	3.84	3.58	3.84

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	5	6
Service and interest cost	—	—

Schedule of Weighted-average Target Asset Allocations

The weighted average target asset allocations for the Company's pension plans in 2013 are as follows:

	US Plans	International Plans
	(In percentages)
Bonds - domestic to plans	53	81
Equities - domestic to plans	26	13
Equities - international to plans	20	3
Other	1	3
Total	100	100

Schedule of Fair Values of Pension Plan Assets

The fair values of pension plan assets are as follows:

	Fair Value Measurement
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Total
	As of December 31,
	2012	2011	2012	2011	2012	2011
	(In $ millions)
Assets
Cash and cash equivalents	15	14	—	—	15	14
Common/collective trusts
Loans	—	—	55	—	55	—
Equities	—	—	176	153	176	153
Derivatives
Swaps	—	—	10	10	10	10
Other	—	—	1	—	1	—
Equity securities
US companies	359	327	—	—	359	327
International companies	450	358	—	—	450	358
Fixed income
Collateralized mortgage obligations	—	—	2	6	2	6
Corporate debt	—	1	822	761	822	762
Treasuries, other debt	102	36	349	375	451	411
Mortgage backed securities	—	—	31	44	31	44
Registered investment companies	—	—	278	282	278	282
Securities lending collateral	10	63	—	—	10	63
Short-term investments	—	—	229	186	229	186
Insurance contracts	—	—	31	29	31	29
Other	22	7	8	10	30	17
Total assets	958	806	1,992	1,856	2,950	2,662
Liabilities
Derivatives
Swaps	—	—	10	10	10	10
Other	—	—	—	1	—	1
Obligations under securities lending	10	63	—	—	10	63
Total liabilities	10	63	10	11	20	74
Total net assets (1)	948	743	1,982	1,845	2,930	2,588

______________________________

⁽¹⁾  Total net assets excludes non-financial plan receivables and payables of $29 million and $63 million, respectively, as of December 31, 2012 and $38 million and $64 million, respectively, as of December 31, 2011. Non-financial items include due to/from broker, interest receivables and accrued expenses.

Schedule of Level 3 Fair Value Measurement of Pension Assets Using Significant Unobservable Inputs

Level 3 fair value measurements using significant unobservable inputs are as follows:

	As of December 31,
	2012	2011
	(In $ millions)
As of the beginning of the year	—	26
Unrealized gain (loss)	—	3
Purchases, sales, issuances and settlements, net	—	(29	)
As of the end of the year	—	—

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

The table below reflects pension benefits expected to be paid from the plans or from the Company's assets. The postretirement benefits represent the Company's share of the benefit cost.

		Postretirement Benefit
	Pension Benefit Payments(1)	Payments	Expected Federal Subsidy
	(In $ millions)
2013	237	54	6
2014	236	55	6
2015	236	56	6
2016	237	55	2
2017	241	54	2
2018-2021	1,250	260	6

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

Schedule of Other Obligations

Additional benefit obligations are as follows:

	As of December 31,
	2012	2011
	(In $ millions)
Long-term disability	22	26
Other	6	6