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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Increase (Decrease) in Accumulated Other Comprehensive Income  
Balance at beginning of period $ 54
Reclassification adjustments (52)
Deferred gain on cash flow hedges, net of tax 76
Currency translation adjustment 35
Total period activity 59
Balance at end of period 113
Derivative Instruments
  
Increase (Decrease) in Accumulated Other Comprehensive Income  
Balance at beginning of period (102)
Reclassification adjustments (52)
Deferred gain on cash flow hedges, net of tax 76
Total period activity 24
Balance at end of period (78)
Translation Adjustments
  
Increase (Decrease) in Accumulated Other Comprehensive Income  
Balance at beginning of period 156
Currency translation adjustment 35
Total period activity 35
Balance at end of period $ 191