Environmental (Schedule of Environmental Remediation Reserves) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 17)	$ 34	$ 34
Divestiture obligations (Note 17)	23	24
Active Sites	21	20
US Superfund sites	14	14
Other environmental remediation reserves	4	4
Total	$ 96	$ 96

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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