|
Derivative Instruments and Hedging Activities (Details) (Interest Rate Swap, USD $)
In Millions, unless otherwise specified |
6 Months Ended |
|---|---|
|
Jun. 30, 2011
|
|
| Derivative | |
| Derivatives, Expected net loss to be transferred from accumulated OCI to earnings within 12 months | $ 18.5 |
|
Designated as Hedging Instrument
|
|
| Derivative | |
| Derivative, Net Liability Position, Aggregate Fair Value | 18.2 |
|
Swaps Effective February 2010
|
|
| Derivative | |
| Notional Amount of Interest Rate Derivatives | 1,000.0 |
| Derivative, Weighted Average Fixed Interest Rate | 5.927% |
| Derivative, Maturity Date | Feb. 01, 2012 |
|
Swaps Effective February 2012
|
|
| Derivative | |
| Notional Amount of Interest Rate Derivatives | 950.0 |
| Derivative, Weighted Average Fixed Interest Rate | 4.933% |
| Derivative, Maturity Date | Feb. 01, 2014 |
|
Swaps Effective April 2011
|
|
| Derivative | |
| Notional Amount of Interest Rate Derivatives | $ 450.0 |
| Derivative, Weighted Average Fixed Interest Rate | 5.242% |
| Derivative, Maturity Date | Apr. 15, 2014 |