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Derivative Instruments and Hedging Activities (Tables) | 6 Months Ended
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Jun. 30, 2011
Fair Value of Derivative Financial Instruments and their Classification in the Balance Sheet |
|  | Asset Derivatives |  |  | Liability Derivatives |
|  | June 30, 2011 |  |  | December 31, 2010 |  |  | June 30, 2011 |  | December 31, 2010 |
|  | Balance Sheet Location |  |  | Fair Value |  |  | Balance Sheet Location |  |  | Fair Value |  |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swaps |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other Liabilities |  | $0.1 |  | Other Liabilities |  | $ | 36.9 |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other Liabilities |  | $27.9 |  | Other Liabilities |  |  | N/A |
Interest Rate Cap |  |  | Other Assets |  |  | $ | — |  |  |  | Other Assets |  |  | $ | — |  |  |  |  |  |  |  |  |  |  |
Effect of Derivative Financial Instruments on the Statements of Income and Comprehensive Income |
Three Months Ended June 30, |
Derivatives in Cash Flow Hedging Relationships |  | Amount of (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective Portion) |  |  | Location of Loss Reclassified from Accumulated OCI into Income (Effective Portion) |  | Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion) |  |  | Location of Loss Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |  |  | Amount of Loss Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |
| 2011 |  |  | 2010 |  |  |  | 2011 |  |  | 2010 |  |  |  | 2011 |  |  | 2010 |
Interest Rate Swaps (1) |  | $ | (2.2 | ) |  | $ | (7.4 | ) |  | Interest expense |  | $ | 4.0 |  |  | $ | 5.8 |  |  |  | Loss on discontinuation of hedging relationship |  |  | $ | 29.8 |  |  |  | N/A |
Derivatives not designated as hedging instruments |  | Location of Gain/Loss Recognized in Income on Derivative |  | Amount of Loss Recognized in Income on Derivative |
|  | 2011 |  |  | 2010 |
Interest Rate Cap |  | Other income/expense |  | $ | — |  |  | $ | — |
Interest Rate Swap |  | Other income/expense |  |  | — |  |  |  | N/A |
Six Months Ended June 30, |
Derivatives in Cash Flow Hedging Relationships |  | Amount of (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective Portion) |  |  | Location of Loss Reclassified from Accumulated OCI into Income (Effective Portion) |  | Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion) |  |  | Location of Loss Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |  | Amount of Loss Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |
| 2011 |  |  | 2010 |  |  |  | 2011 |  |  | 2010 |  |  |  | 2011 |  |  | 2010 |
Interest Rate Swaps (1) |  | $ | (2.7 | ) |  | $ | (14.2 | ) |  | Interest expense |  | $ | 9.8 |  |  | $ | 11.7 |  |  | Loss on discontinuation of hedging relationship |  | $ | 29.8 |  |  |  | N/A |
Derivatives not designated as hedging instruments |  | Location of Gain/Loss Recognized in Income on Derivative |  | Amount of Loss Recognized in Income on Derivative |
|  | 2011 |  |  | 2010 |
Interest Rate Cap |  | Other income/expense |  | $ | — |  |  | $ | — |
Interest Rate Swap |  | Other income/expense |  |  | — |  |  |  | N/A |
(1) | The results include the interest rate swap gain (loss) prior to discontinuation in June 2011.
Derivatives Not Designated As Hedging Instruments, Amount Of Loss Recognized In Income On Derivative |
Derivatives not designated as hedging instruments |  | Location of Gain/Loss Recognized in Income on Derivative |  | Amount of Loss Recognized in Income on Derivative |
|  | 2011 |  |  | 2010 |
Interest Rate Cap |  | Other income/expense |  | $ | — |  |  | $ | — |
Interest Rate Swap |  | Other income/expense |  |  | — |  |  |  | N/A |
Cash Flow Hedging [Member] |
Schedule of Outstanding Interest Rate Derivatives |
Interest Rate Derivative |  | Number of Instruments |  |  | Notional Amount |
Interest Rate Swap |  |  | 1 |  |  | $ | 16.6 million |
Non-designated [Member] |
Schedule of Outstanding Interest Rate Derivatives |
Interest Rate Derivative |  | Number of Instruments |  |  | Notional Amount |
Interest Rate Cap |  |  | 1 |  |  | $ | 175.0 million |
Interest Rate Swap |  |  | 1 |  |  | $ | 500.0 million |

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- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + Details
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- Definition Schedule of the location and amount of gains and losses reported in the statement of financial performance (or when applicable, the statement of financial position, for example, gains and losses initially recognized in other comprehensive income) on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b + Details
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