Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument
Total long-term debt	$ 4,768,266	$ 4,753,083
Unamortized discount on debt	(7,514)	(8,602)
Total debt	4,760,752	4,744,481
Current maturities of long-term debt	(36,640)	(33,460)
Long-term debt, net	4,724,112	4,711,021
Senior Secured Credit Facility
Debt Instrument
Total long-term debt	2,446,526	2,471,916
7 7/8% Senior Notes
Debt Instrument
Total long-term debt	1,000,000	1,000,000
6 5/8% Senior Notes
Debt Instrument
Total long-term debt	1,000,000	1,000,000
Capital lease obligations
Debt Instrument
Total long-term debt	$ 321,740	$ 281,167

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.

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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.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

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