Debt and Other Obligations Retirement of Long-term Obligations (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Extinguishment of Debt [Line Items]
Write-off of deferred financing costs and discounts			$ 7,000,000
Extinguishment of Debt, Amount			942,870,000
Repayments of Other Long-term Debt			699,486,000	0
Gains (losses) on retirement of long-term obligations	(7,518,000)	0	(14,586,000)	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			37,257,000
Repayments of Other Long-term Debt			41,334,000
Gains (losses) on retirement of long-term obligations			(6,517,000)
Fixed Rate - High Yield Bonds, 7.75% Secured Notes [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount			35,488,000
Repayments of Other Long-term Debt			39,027,000
Gains (losses) on retirement of long-term obligations			(4,731,000)
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			$ 950,486,000