v2.4.0.6
Pension Plans (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
U.S. pension benefits
     
Change in Benefit Obligations:      
Benefit obligation as of beginning of year $ 432 $ 394  
Service cost 15 13 12
Interest cost 25 24 22
Actuarial (gain) loss, net 58 19  
Benefits paid (16) (17)  
Expenses paid (1) (1)  
Benefit obligation as of end of year 513 432 394
Change in Plan Assets:      
Fair value of plan assets as of beginning of year 330 298  
Actual return on plan assets 20 48  
Employer contributions 22 2  
Benefits paid (16) (17)  
Expenses paid (1) (1)  
Fair value of plan assets as of end of year 355 330 298
Funded (Unfunded) Status and Net Amounts Recognized      
Plan assets (less than) in excess of benefit obligation (158) (102)  
Net (liability) asset recognized in the balance sheet (158) (102)  
Amounts Recognized in the Balance Sheet Consist Of:      
Non-current assets   2  
Current liabilities (1) (1)  
Non-current liabilities (157) (103)  
Net (liability) asset recognized (158) (102)  
Foreign pension benefits
     
Change in Benefit Obligations:      
Benefit obligation as of beginning of year 136 479  
Service cost 7 3 3
Interest cost 6 22 41
Actuarial (gain) loss, net 4 9  
Employee contributions 3 1  
Net transfers in (out)   (398)  
Plan amendments   1  
Plan settlements (4) 42  
Benefits paid (4) (19)  
Expenses paid (1)    
Impact of foreign exchange rates (4) (4)  
Benefit obligation as of end of year 143 136 479
Change in Plan Assets:      
Fair value of plan assets as of beginning of year 115 493  
Actual return on plan assets 6 28  
Employer contributions 11 14  
Employee contributions 3 1  
Plan settlements (3) (2)  
Divestitures   (398)  
Benefits paid (4) (19)  
Expenses paid (1)    
Impact of foreign exchange rates (3) (2)  
Fair value of plan assets as of end of year 124 115 493
Funded (Unfunded) Status and Net Amounts Recognized      
Plan assets (less than) in excess of benefit obligation (19) (21)  
Net (liability) asset recognized in the balance sheet (19) (21)  
Amounts Recognized in the Balance Sheet Consist Of:      
Non-current assets 9 10  
Current liabilities (2) (2)  
Non-current liabilities (26) (29)  
Net (liability) asset recognized $ (19) $ (21)