v2.4.0.6
Financial Instruments by Balance Sheet Grouping (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Taxes and other current assets $ 357 [1] $ 515 [1]
Taxes and other noncurrent assets 1,042 [2] 710 [2]
Other current liabilities 459 [3] 339 [3]
Other noncurrent liabilities 1,306 [4] 545 [4]
Foreign Exchange Contract [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Taxes and other current assets   21
Taxes and other noncurrent assets 17 107
Other current liabilities 104 79
Other noncurrent liabilities 1,300 544
Foreign currency forward-exchange contracts [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Taxes and other current assets 349 494
Other current liabilities 355 257
Interest rate swaps [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Taxes and other current assets 8  
Taxes and other noncurrent assets 1,000 603
Other current liabilities   3
Other noncurrent liabilities $ 14 $ 1
[1] As of December 31, 2011, derivative instruments at fair value include foreign currency forward-exchange contracts ($349 million) and interest rate swaps ($8 million) and, as of December 31, 2010, include foreign currency forward-exchange contracts ($494 million) and foreign currency swaps ($21 million).
[2] As of December 31, 2011, derivative instruments at fair value include interest rate swaps ($1.0 billion) and foreign currency swaps ($17 million) and, as of December 31, 2010, include interest rate swaps ($603 million) and foreign currency swaps ($107 million).
[3] At December 31, 2011, derivative instruments at fair value include foreign currency forward-exchange contracts ($355 million) and foreign currency swaps ($104 million) and, at December 31, 2010, include foreign currency forward-exchange contracts ($257 million), foreign currency swaps ($79 million) and interest rate swaps ($3 million).
[4] At December 31, 2011, derivative instruments at fair value include foreign currency swaps ($1.3 billion) and interest rate swaps ($14 million) and, at December 31, 2010, include foreign currency swaps ($544 million) and interest rate swaps ($1 million).