Current Other Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Other Liabilities, Current [Abstract]
Asset retirement obligations	$ 7	$ 9
Benefit obligations (Note 9)	33	28
Customer rebates	33	53
Derivatives (Note 14)	5	13
Environmental (Note 10)	18	21
Insurance	9	9
Interest	15	19
Restructuring (Note 12)	15	21
Salaries and benefits	79	129
Sales and use tax/foreign withholding tax payable	16	13
Uncertain tax positions (Note 13)	0	59
Other	68	58
Total	$ 298	$ 432