Benefit Obligations (Tables)

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs Recognized

The components of net periodic benefit costs are as follows:

	Pension Benefits				Postretirement Benefits			Pension Benefits				Postretirement Benefits
	Three Months Ended June 30,							Six Months Ended June 30,
	2012		2011		2012		2011	2012		2011		2012		2011
	(In $ millions)							(In $ millions)
Service cost	7		7		1		1	14		14		1		1
Interest cost	42		45		3		2	85		91		6		6
Expected return on plan assets	(52	)	(51	)	—		—	(103	)	(101	)	—		—
Recognized actuarial (gain) loss	15		8		(1	)	—	29		15		(1	)	(1	)
Prior service credit	1		—		—		—	1		—		—		—
Curtailment (gain) loss	—		—		—		—	—		(1	)	—		—
Total	13		9		3		3	26		18		6		6

Schedule of Company Commitments to Fund Benefit Obligations

Commitments to fund benefit obligations during 2012 are as follows:

	As of	Expected for
	June 30, 2012	2012
	(In $ millions)
Cash contributions to defined benefit pension plans	88	160
Benefit payments from nonqualified trusts related to nonqualified pension plans	7	15
Benefit payments to other postretirement benefit plans	13	25