Location on the Balance Sheet of Derivative Assets and Liabilities (Detail) (Fair Value, Inputs, Level 2, USD $)
In Millions, unless otherwise specified |
Sep. 30, 2012
|
Dec. 31, 2011
|
Sep. 30, 2012
Designated as Hedging Instrument
Foreign Exchange Contracts
Other current assets
|
Dec. 31, 2011
Designated as Hedging Instrument
Foreign Exchange Contracts
Other current assets
|
Sep. 30, 2012
Designated as Hedging Instrument
Foreign Exchange Contracts
Other noncurrent assets
|
Dec. 31, 2011
Designated as Hedging Instrument
Foreign Exchange Contracts
Other noncurrent assets
|
Sep. 30, 2012
Designated as Hedging Instrument
Foreign Exchange Contracts
Other non-current liabilities
|
Dec. 31, 2011
Designated as Hedging Instrument
Foreign Exchange Contracts
Other non-current liabilities
|
Sep. 30, 2012
Designated as Hedging Instrument
Interest Rate Contracts
Other current assets
|
Sep. 30, 2011
Designated as Hedging Instrument
Interest Rate Contracts
Other current assets
|
Sep. 30, 2012
Designated as Hedging Instrument
Interest Rate Contracts
Other noncurrent assets
|
Dec. 31, 2011
Designated as Hedging Instrument
Interest Rate Contracts
Other noncurrent assets
|
Sep. 30, 2012
Designated as Hedging Instrument
Interest Rate Contracts
Other non-current liabilities
|
Dec. 31, 2011
Designated as Hedging Instrument
Interest Rate Contracts
Other non-current liabilities
|
Sep. 30, 2012
Not Designated as Hedging Instrument
Foreign Exchange Contracts
Other current assets
|
Dec. 31, 2011
Not Designated as Hedging Instrument
Foreign Exchange Contracts
Other current assets
|
Sep. 30, 2012
Not Designated as Hedging Instrument
Foreign Exchange Contracts
Other current liabilities
|
Dec. 31, 2011
Not Designated as Hedging Instrument
Foreign Exchange Contracts
Other current liabilities
|
Sep. 30, 2012
Not Designated as Hedging Instrument
Interest Rate Contracts
Other noncurrent assets
|
Dec. 31, 2011
Not Designated as Hedging Instrument
Interest Rate Contracts
Other noncurrent assets
|
Sep. 30, 2012
Not Designated as Hedging Instrument
Interest Rate Contracts
Other non-current liabilities
|
Dec. 31, 2011
Not Designated as Hedging Instrument
Interest Rate Contracts
Other non-current liabilities
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Asset Derivatives | ||||||||||||||||||||||
Asset Derivatives | $ 716 | $ 649 | $ 75 | $ 164 | $ 18 | $ 0 | $ 10 | $ 0 | $ 446 | $ 401 | $ 60 | $ 2 | $ 107 | $ 82 | ||||||||
Derivative Liabilities [Abstract] | ||||||||||||||||||||||
Liability Derivatives | $ 293 | $ 208 | $ 170 | $ 185 | $ 14 | $ 13 | $ (62) | $ 0 | $ 47 | $ 10 |