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Derivative Financial Instruments - Additional Information (Detail)
In Millions, unless otherwise specified |
Dec. 31, 2011
USD ($)
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Dec. 31, 2011
Derivative Outstanding
USD ($)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Euros
USD ($)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Euros
EUR (€)
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Euros
USD ($)
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Euros
EUR (€)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with British pounds
USD ($)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with British pounds
GBP (£)
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with British pounds
USD ($)
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with British pounds
GBP (£)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Canadian dollars
USD ($)
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Canadian dollars
CAD
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Canadian dollars
USD ($)
|
Dec. 31, 2010
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with Canadian dollars
CAD
|
Dec. 31, 2011
Cash Flow Hedging Relationship
Foreign exchange contracts to purchase US dollars
|
Dec. 31, 2011
Derivatives in Fair Value Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with foreign currencies
USD ($)
|
Dec. 31, 2010
Derivatives in Fair Value Hedging Relationship
Foreign exchange contracts to purchase U.S. dollars with foreign currencies
USD ($)
|
Dec. 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase U.S. dollars with foreign currencies
USD ($)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase U.S. dollars with foreign currencies
USD ($)
|
Dec. 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts to sell U.S. dollars for foreign currencies
USD ($)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to sell U.S. dollars for foreign currencies
USD ($)
|
Dec. 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase Euros with other currencies
USD ($)
|
Dec. 31, 2011
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase Euros with other currencies
EUR (€)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase Euros with other currencies
USD ($)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase Euros with other currencies
EUR (€)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to sell Euros with other currencies
USD ($)
|
Dec. 31, 2010
Derivatives not designated as hedging instruments
Foreign exchange contracts to sell Euros with other currencies
EUR (€)
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Derivative Instruments and Hedging Activities Disclosure [Line Items] | |||||||||||||||||||||||||||
| Effective portion of our cash flow hedges before tax effect | $ 154 | ||||||||||||||||||||||||||
| Cash flow hedges, expected to be reclassified from AOCI to revenues within the next 12 months | 127 | ||||||||||||||||||||||||||
| Notional principal of foreign exchange contracts | 3,800.0 | 2,800.0 | 4,100.0 | 3,000.0 | 2,200.0 | 1,400.0 | 2,300.0 | 1,500.0 | 490.0 | 504.0 | 382.0 | 407.0 | 1,000.0 | 787.0 | 2,300.0 | 1,000.0 | 929.0 | 711.0 | 1,300.0 | 991.0 | |||||||
| Foreign exchange option contracts, maximum maturities (in months) | 36 months | ||||||||||||||||||||||||||
| Notional principal of foreign exchange contracts | 472 | 84 | 8 | 6 | |||||||||||||||||||||||
| Total notional amounts of interest rate contracts | $ 100 |