Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - ABO and PBO in Excess of Plan Assets (Details)

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Employee Benefit Plans - ABO and PBO in Excess of Plan Assets (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Total Defined Benefit Pension Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Plans with ABO in excess of plan asset, PBO $ 612 $ 519
Plans with ABO in excess of plan asset, ABO 577 489
Plan with ABO in excess of plan asset, fair value of plan asset 337 289
Plans with PBO in excess of plan assets, PBO 625 519
Plans with PBO in excess of plan assets, fair value of plan assets 350 289
U.S. Defined Benefit Pension Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Plans with ABO in excess of plan asset, PBO 7 7
Plans with ABO in excess of plan asset, ABO 7 7
Plan with ABO in excess of plan asset, fair value of plan asset 0 0
Plans with PBO in excess of plan assets, PBO 7 7
Plans with PBO in excess of plan assets, fair value of plan assets 0 0
Non-U.S. Defined Benefit Pension Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Plans with ABO in excess of plan asset, PBO 605 512
Plans with ABO in excess of plan asset, ABO 570 482
Plan with ABO in excess of plan asset, fair value of plan asset 337 289
Plans with PBO in excess of plan assets, PBO 618 512
Plans with PBO in excess of plan assets, fair value of plan assets $ 350 $ 289