v2.4.0.6
Effect of Derivative Instruments on Income and Other Comprehensive Income (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash Flow Hedging Relationship | Foreign Exchange Contract
      
Derivative Instruments, Gain (Loss) [Line Items]      
Increase (Decrease) in Gains Recognized in AOCI on Derivative Before Tax Effect (Effective Portion) $ 54 $ 331 $ (14)
Cash Flow Hedging Relationship | Foreign Exchange Contract | Revenue
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains Reclassified from AOCI into Income (Effective Portion) 43 203 325
Cash Flow Hedging Relationship | Foreign Exchange Contract | Interest and other income, net
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) (323) [1] (320) [1] (268) [1]
Derivatives in Fair Value Hedging Relationship
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives (14) [2] (6) [2] 0 [2]
Derivatives in Fair Value Hedging Relationship | Foreign Exchange Contract | Interest and other income, net
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives (2) [2] (35) [2] 2 [2]
Derivatives in Fair Value Hedging Relationship | Hedged item | Interest and other income, net
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives (12) [2] 29 [2] (2) [2]
Derivatives not designated as hedging instruments
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives 10 (40) (78)
Derivatives not designated as hedging instruments | Foreign Exchange Contract | Interest and other income, net
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives 29 (40) (78)
Derivatives not designated as hedging instruments | Interest rate contract | Interest and other income, net
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Income on Derivatives $ (19) $ 0 $ 0
[1] Gains (losses) related to the ineffective portion of the hedges were not material in all periods presented.
[2] Losses related to the amount excluded from effectiveness testing of the hedges were $0, $6 million, and $14 million for the years ended December 31, 2009, December 31, 2010, and December 31, 2011.