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Noncurrent Other Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Other Liabilities, Noncurrent [Abstract]    
Asset retirement obligations $ 26 $ 18
Deferred proceeds 48 53
Deferred revenue 24 28
Derivatives (Note 15) 13 3
Environmental (Note 11) 71 67
Income taxes payable 20 20
Insurance 50 50
Restructuring (Note 13) 0 2
Other 43 46
Total $ 295 $ 287