v2.4.0.6
Supplemental Financial Information - Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Accumulated Other Comprehensive Loss [Line Items]      
Net investment hedge, beginning balance $ (203)    
Net investment hedge , other comprehensive income (loss) 18 (203)  
Net investment hedge, ending balance (185) (203)  
Currency translation differences, beginning balance 504 525 367
Currency translation differences, other comprehensive income (loss) 10 (21) 158
Currency translation differences, ending balance 514 504 525
Net actuarial gain/(losses), beginning balance 22 13 32
Net actuarial gain/(losses), other comprehensive income (loss) (51) 7 (19)
Net actuarial gain/(losses), ending balance (29) 22 13
Accumulated Other Comprehensive Income (loss), beginning balance 323 538 399
Accumulated Other Comprehensive Income (loss), Other comprehensive income (loss) (23) (215) 139
Accumulated Other Comprehensive Income (loss), ending balance $ 300 $ 323 $ 538