Current Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Other Liabilities, Current [Abstract]
Salaries and benefits	$ 85	$ 101
Environmental (Note 11)	19	25
Restructuring (Note 13)	37	44
Insurance	17	19
Asset retirement obligations	39	22
Derivatives (Note 15)	19	26
Current portion of benefit obligations	47	47
Interest	41	25
Sales and use tax/foreign withholding tax payable	23	16
Uncertain tax positions	64	70
Other	116	144
Total	$ 507	$ 539