Long-Term Debt -Debt Balances and Interest Rates (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
Debt, total short-term and long-term	$ 3,871.4		$ 4,066.0
Current maturities of long-term debt	0		(201.0)
Debt	3,871.4		3,865.0
Revolving Loan [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	0		0
Long-term Debt, weighted average interest rate	0.00%	[1]
Term Loan [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	1,339.5		1,540.5
Long-term Debt, weighted average interest rate	3.90%	[1]
Senior Secured Notes, due 2018 [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	500.0		500.0
Long-term Debt, weighted average interest rate	8.00%	[1]
2019 Senior Notes, due 2019 [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	1,305.0		1,175.0
Premium, unamortized	5.4		0
Long-term Debt, weighted average interest rate	8.50%	[1]
Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	721.5		721.5
Long-term Debt, weighted average interest rate	12.535%	[1]
Senior Notes, due 2015 [Member]
Debt Instrument [Line Items]
Debt, short-term and long-term	$ 0		$ 129.0
Long-term Debt, weighted average interest rate	0.00%	[1]

[1] Weighted-average interest rate as of June 30, 2012