v2.4.0.6
Retirement Benefits Plans - Change in Benefit Obligations (Details 1) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
United States pension liabilities [Member]
    
Change in benefit obligations    
Balance at January 1 $ 2,899 $ 2,458
Service cost 115 93
Interest cost 134 132
Actuarial loss 264 346
Gross benefits paid (132) (131)
Currency translation 0 0
Acquistions 536 0
Other 1 1
Balance at December 31 3,817 2,899
Accumulated benefit obligation 3,639 2,762
Non-United States pension liabilities [Member]
    
Change in benefit obligations    
Balance at January 1 1,505 1,460
Service cost 50 48
Interest cost 77 78
Actuarial loss 196 26
Gross benefits paid (78) (82)
Currency translation 54 (23)
Acquistions 201 0
Other 1 (2)
Balance at December 31 2,006 1,505
Accumulated benefit obligation 1,878 1,364
Other postretirement liabilities [Member]
    
Change in benefit obligations    
Balance at January 1 853 826
Service cost 17 15
Interest cost 38 41
Actuarial loss 34 41
Gross benefits paid (94) (101)
Currency translation 0 (1)
Acquistions 64 0
Other 28 32
Balance at December 31 $ 940 $ 853