|
Financial Instruments and Fair Value Measurements (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
|
Foreign Currency Forwards [Member]
|
|||
| Derivative activity | |||
| Notional amounts at January 1 | $ 0 | $ 0 | |
| New contracts | 0 | 351.7 | |
| Acquired contracts | 0 | ||
| Matured or expired contracts | 0 | (351.7) | |
| Notional amounts at December 31 | 0 | 0 | |
|
Interest Rate Swaps [Member]
|
|||
| Derivative activity | |||
| Notional amounts at January 1 | 268.1 | 157.7 | 0 |
| New contracts | 0 | 155.0 | 157.7 |
| Acquired contracts | 1,337.3 | ||
| Matured or expired contracts | (108.9) | (44.6) | |
| Notional amounts at December 31 | 1,496.5 | 268.1 | 157.7 |
|
Interest Rate Cap [Member]
|
|||
| Derivative activity | |||
| Notional amounts at January 1 | 0 | ||
| New contracts | 0 | ||
| Acquired contracts | 25.7 | ||
| Matured or expired contracts | (25.7) | ||
| Notional amounts at December 31 | $ 0 | ||