Environmental (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 17)	$ 36	$ 36
Divestiture obligations (Note 17)	24	26
US Superfund sites	14	13
Other environmental remediation reserves	25	26
Total	$ 99	$ 101

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

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