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Long-term Debt and Derivatives (Details 2) (USD $)
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Mar. 31, 2012
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Dec. 31, 2011
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| Future minimum repayments of long-term debt | ||
| Within one year | $ 44,581,000 | |
| 1-3 years | 128,942,000 | |
| 3-5 years | 825,223,000 | |
| Over 5 years | 1,033,543,000 | |
| Total minimum payments | 2,032,289,000 | 2,044,914,000 |
| Letters of credit outstanding | 24,500,000 | |
| Available borrowing capacity | 390,500,000 | |
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Senior secured credit facility
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| Future minimum repayments of long-term debt | ||
| Total minimum payments | 1,703,125,000 | 1,715,750,000 |
| Long-term Debt | ||
| Term loan amount outstanding | 1,703,100,000 | |
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Revolving credit facility
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| Long-term Debt | ||
| Revolving credit facility amount outstanding | 285,000,000 | |
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Variable rate Term Loan A
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| Long-term Debt | ||
| Term loan amount outstanding | 673,700,000 | |
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Variable rate Term Loan B
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| Long-term Debt | ||
| Term loan amount outstanding | $ 744,400,000 |
| X | ||||||||||
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- Definition
Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization after the fourth full fiscal year following the date of the most recent balance sheet presented in the financial statements. No definition available.
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| X | ||||||||||
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- Definition
Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization maturing in years four and five following the date of the latest balance sheet presented in the financial statements. No definition available.
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| X | ||||||||||
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- Definition
Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization maturing in years two and three following the date of the latest balance sheet presented in the financial statements. No definition available.
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| X | ||||||||||
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- Definition
Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization within the next twelve months following the date of the latest balance sheet presented in the financial statements. No definition available.
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| X | ||||||||||
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- Definition
Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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| X | ||||||||||
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- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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