Benefit Obligations (Tables)

9 Months Ended

Sep. 30, 2011

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs Recognized

The components of net periodic benefit costs are as follows:

					Postretirement								Postretirement
	Pension Benefits				Benefits				Pension Benefits				Benefits
	Three Months Ended September 30,								Nine Months Ended September 30,
	2011		2010		2011		2010		2011		2010		2011		2010
	(In $ millions)								(In $ millions)
Service cost	7		7		—		—		21		23		1		1
Interest cost	45		46		3		4		136		142		9		11
Expected return on plan assets	(50	)	(48	)	—		—		(151	)	(148	)	—		—
Recognized actuarial (gain) loss	7		1		(1	)	(1	)	22		5		(2	)	(3	)
Prior service credit	1		1		—		—		1		1		—		—
Curtailment (gain) loss	—		(1	)	—		—		(1	)	(4	)	—		—
Total	10		6		2		3		28		19		8		9

Schedule of Company Commitments to Fund Benefit Obligations

Commitments to fund benefit obligations during 2011 are as follows:

	As of September 30, 2011	Expected for 2011
	(In $ millions)
Cash contributions to defined benefit pension plans	133	164
Benefit payments from nonqualified trusts related to nonqualified pension plans	11	15
Benefit payments to other postretirement benefit plans	22	27