Long-Term Debt (Parenthetical) (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$ 1,100,000,000	$ 1,100,000,000
Long-term Debt, Gross	0	0
Line of Credit [Member] | Revolving credit facility, due 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	0
Senior Subordinated Notes [Member] | 7.875% senior subordinated notes, due 2013 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	0
Senior Subordinated Notes [Member] | 8.375% senior subordinated notes, due 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	25,200,000
Senior Subordinated Notes [Member] | 8.875% senior second lien notes, due 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	400,000,000	400,000,000
Loans Payable [Member] | Term Loan B, due 2016 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	375,100,000	356,200,000
Senior Notes [Member] | 10.5% senior notes, due 2016 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	0
Senior Notes [Member] | 11.5% senior notes, due 2017 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	225,000,000	0
Convertible Debt [Member] | 7% senior exchangeable notes, due 2017 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	0
Other debt including capital leases [Member] | Other debt including capital leases [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0	$ 0