Debt and Other Obligations Retirement of Long-term Obligations (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Extinguishment of Debt [Line Items]
Write-off of deferred financing costs and discounts	$ 3,700,000
Extinguishment of Debt, Amount	896,737,000
Repayments of Other Long-term Debt	648,385,000	0
Gains (losses) on retirement of long-term obligations	(7,068,000)	0
Variable Rate 2007 Term Loans [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	619,125,000
Repayments of Other Long-term Debt	619,125,000
Gains (losses) on retirement of long-term obligations	(1,893,000)
Fixed Rate - High Yield Bonds, 9% Senior Notes [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	5,624,000
Repayments of Other Long-term Debt	6,207,000
Gains (losses) on retirement of long-term obligations	(957,000)
Fixed Rate - High Yield Bonds, 7.75% Secured Notes [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	20,988,000
Repayments of Other Long-term Debt	23,053,000
Gains (losses) on retirement of long-term obligations	(2,773,000)
Variable Rate Revolver [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	251,000,000
Repayments of Other Long-term Debt	251,000,000
Gains (losses) on retirement of long-term obligations	(1,445,000)
Total [Member]
Extinguishment of Debt [Line Items]
Repayments of Other Long-term Debt	$ 899,385,000