Current Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Other Liabilities, Current [Abstract]
Salaries and benefits	$ 70	$ 101
Environmental (Note 11)	20	25
Restructuring (Note 13)	37	44
Insurance	16	19
Asset retirement obligations	32	22
Derivatives (Note 15)	17	26
Current portion of benefit obligations	47	47
Interest	25	25
Sales and use tax/foreign withholding tax payable	15	16
Uncertain tax positions	66	70
Other	121	144
Total	$ 466	$ 539