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Derivative Instruments And Hedging Activities (Tables) | 9 Months Ended
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Sep. 30, 2011
Derivative [Line Items] |
Fair Value Of Derivative Financial Instruments And Their Classification In The Balance Sheet |
|  | Asset Derivatives |  |  | Liability Derivatives |
|  | September 30, 2011 |  |  | December 31, 2010 |  |  | September 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 |  | $ | — |  |  | Other Liabilities |  | $ | 36.9 |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other Liabilities |  | $ | 22.2 |  |  | Other Liabilities |  |  | N/A |
Interest Rate Cap |  |  | Other Assets |  |  | $ | 0.1 |  |  |  | Other Assets |  |  | $ | — |  |  |  |  |  |  |  |  |  |  |  |  |
Effect Of Derivative Financial Instruments On The Statements Of Income And Comprehensive Income |
Three Months Ended September 30, |
Derivatives in Cash |  | Amount of (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective Portion) |  |  | Location of Loss Reclassified from Accumulated OCI into Income |  |  | 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 |  | Amount of (Loss) Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |
Flow Hedging Relationships |  | 2011 |  |  | 2010 |  |  | (Effective Portion) |  |  | 2011 |  |  | 2010 |  |  | Effectiveness Testing) |  | 2011 |  |  | 2010 |
Interest Rate Swaps |  | $ | — |  |  | $ | (5.3 | ) |  |  | Interest expense |  |  | $ | 0.1 |  |  | $ | 5.8 |  |  | Loss on discontinuation of hedging relationship |  | $ | — |  |  |  | N/A |
Derivatives not designated as hedging instruments |  | Location of Gain/(Loss) Recognized in Income on |  | Amount of (Loss) Recognized in Income on Derivative |
| Derivative |  | 2011 |  |  | 2010 |
Interest Rate Cap |  | Other income/(loss) |  | $ | (0.1 | ) |  | $ | — |
Interest Rate Swap |  | Other income/(loss) |  |  | (0.1 | ) |  |  | N/A |
Nine Months Ended September 30, |
Derivatives in Cash |  | Amount of (Loss) Recognized in Other Comprehensive Income ("OCI") on Derivative (Effective Portion) |  |  | Location of Loss Reclassified from Accumulated OCI into Income |  |  | 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 |  | Amount of (Loss) Recognized in Income on Derivative (Discontinuation, Ineffective Portion and Amount Excluded from Effectiveness Testing) |
Flow Hedging Relationships |  | 2011 |  |  | 2010 |  |  | (Effective Portion) |  |  | 2011 |  |  | 2010 |  |  | Effectiveness Testing) |  | 2011 |  |  | 2010 |
Interest Rate Swaps (1) |  | $ | (2.7 | ) |  | $ | (19.5 | ) |  |  | Interest expense |  |  | $ | 9.9 |  |  | $ | 17.5 |  |  | Loss on discontinuation of hedging relationship |  | $ | (29.8 | ) |  |  | N/A |
Derivatives not designated as hedging instruments |  | Location of Gain/(Loss) Recognized in Income on |  | Amount of (Loss) Recognized in Income on Derivative |
| Derivative |  | 2011 |  |  | 2010 |
Interest Rate Cap |  | Other income/(loss) |  | $ | (0.1 | ) |  | $ | — |
Interest Rate Swap |  | Other income/(loss) |  |  | (0.1 | ) |  |  | N/A |
(1) | The results include the interest rate swap gain (loss) prior to discontinuation in May 2011.
Not-Designated [Member] |
Derivative [Line Items] |
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 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, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 815 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 4C -Section 50 -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 + Details
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