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Environmental (Schedule of Environmental Remediation Reserves) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Environmental Remediation Obligations [Abstract]    
Demerger obligations (Note 18) $ 25 $ 27
Divestiture obligations (Note 18) 21 21
Active Sites 31 32
US Superfund sites 12 13
Other environmental remediation reserves 3 4
Total $ 92 $ 97