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Commitments and Contingencies (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Asbestos Liability and Related Assets [Abstract]    
Balance as of January 1 $ 641 $ 266
Changes in estimate during the period:    
Changes in estimates during the period continuing operations, Liabilities 123 591
Changes in estimates during the period continuing operations, Assets 23 206
Changes in estimates during period continuing operations, net 100 385
Changes in estimates during period discontinued operations, Liability (58) 217
Changes in estimates during period discontinued operations, Assets (52) 227
Changes in estimates during period discontinued operations, net (6) (10)
Net cash activity (21) 0
Other adjustments 0 0
Balance as of December 31 714 641
Current portion net 6 12
Noncurrent portion net 708 629
Asset [Member]
   
Asbestos Liability and Related Assets [Abstract]    
Balance as of January 1, Asset 1,035 667
Changes in estimate during the period:    
Net cash activity, Asset (52) (54)
Other adjustments 0 (11)
Balance as of December 31, Asset 954 1,035
Current portion 133 105
Noncurrent portion 821 930
Liability [Member]
   
Asbestos Liability and Related Assets [Abstract]    
Balance as of January 1 ,Liability 1,676 933
Changes in estimate during the period:    
Net cash activity, Liability (73) (54)
Other adjustments 0 (11)
Balance as of December 31, Liability 1,668 1,676
Current portion 139 117
Noncurrent portion $ 1,529 $ 1,559