Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

Schedule of Rent Expense

Rent expense recorded under all operating leases is as follows:

	Year Ended December 31,
	2012	2011	2010
	(In $ millions)
Total	165	173	160

Schedule of Future Minimum Lease Payments for Capital Leases

	As of December 31, 2012
	Capital Leases
	(In $ millions)
2013	43
2014	42
2015	40
2016	40
2017	40
Later years	288
Sublease income	—
Minimum lease commitments	493
Less amounts representing interest	(249	)
Present value of net minimum lease obligations	244

Schedule of Future Minimum Rental Payments for Operating Leases

	As of December 31, 2012
	Operating Leases
	(In $ millions)
2013	49
2014	46
2015	40
2016	34
2017	22
Later years	116
Sublease income	(21	)
Minimum lease commitments	286