Debt (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Debt
Short-term loans	$ 17	$ 1
Current maturities of long-term debt and other	1,251	10
Current deferred gain on interest rate swaps	43	0
Current unamortized discounts and debt issuance costs	(6)	0
Short-term borrowings and current maturities of long-term debt	1,305	11
Non-current maturities of long-term debt	1,855	1,257
Non-current capital leases	16	60
Deferred gain on interest rate swaps	0	45
Unamortized discounts and debt issuance costs	(3)	(8)
Long-term debt	1,868	1,354
Total debt	$ 3,173	$ 1,365