|
Notional Amounts of Outstanding Derivative Positions (Detail)
In Millions, unless otherwise specified |
Dec. 31, 2011
Euro
EUR (€)
|
Dec. 31, 2010
Euro
EUR (€)
|
Dec. 31, 2011
British Pound Sterling
GBP (£)
|
Dec. 31, 2010
British Pound Sterling
GBP (£)
|
Dec. 31, 2011
Canadian Dollar
CAD
|
Dec. 31, 2010
Canadian Dollar
CAD
|
Dec. 31, 2011
Fixed to Floating Interest Rate Swaps
USD ($)
|
Dec. 31, 2010
Fixed to Floating Interest Rate Swaps
USD ($)
|
Dec. 31, 2011
Floating to Fixed Interest Rate Swaps
USD ($)
|
Dec. 31, 2010
Floating to Fixed Interest Rate Swaps
USD ($)
|
|---|---|---|---|---|---|---|---|---|---|---|
| Derivative [Line Items] | ||||||||||
| Currency Hedges | € 1,685 | € 1,732 | £ 870 | £ 871 | 318 | 289 | ||||
| Interest Rate Hedges | $ 6,424 | $ 6,000 | $ 791 | $ 53 |