Benefit Obligations (Tables)

6 Months Ended

Jun. 30, 2013

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,
	2013		2012		2013	2012	2013		2012		2013	2012
			As Adjusted (Note 1)			As Adjusted (Note 1)			As Adjusted (Note 1)			As Adjusted (Note 1)
	(In $ millions)						(In $ millions)
Service cost	8		7		1	1	17		14		2	1
Interest cost	38		42		3	3	77		85		5	6
Expected return on plan assets	(56	)	(51	)	—	—	(112	)	(102	)	—	—
Recognized actuarial (gain) loss	—		—		—	—	—		—		—	—
Amortization of prior service cost (credit)	1		—		—	—	1		1		—	—
Curtailment (gain) loss	—		—		—	—	—		—		—	—
Total	(9	)	(2	)	4	4	(17	)	(2	)	7	7

Schedule of Company Commitments to Fund Benefit Obligations

Commitments to fund benefit obligations during 2013 are as follows:

	As of June 30, 2013	Total Expected 2013
	(In $ millions)
Cash contributions to defined benefit pension plans	16	30
Benefit payments to nonqualified pension plans	11	22
Benefit payments to other postretirement benefit plans	6	24