Debt And Financing - Total Debt (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 13, 2014	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Par value		$ 1,081.9	$ 1,116.2
Premium/(Discount), Debt		(4.3)	(6.3)
Long-term debt		1,077.6	1,109.9
Long-term Debt, Current Maturities		(15.9)	(31.1)
Par value, excluding current maturities		1,066.0	1,084.5
Premium/(Discount), Noncurrent Maturities		(4.3)	(5.7)
Long-term debt, less current portion		1,061.7	1,078.8
2014 Term Loan
Debt Instrument [Line Items]
Par value		686.0	693.0
Premium/(Discount), Debt		(4.3)	(5.7)
Long-term debt		$ 681.7	$ 687.3
Interest rate		8.25%	8.25%
Effective Interest Rate		8.45%	8.45%
Par Value, Current Maturities		$ (7.0)	$ (7.0)
Premium/(Discount), Current Maturities		0.0	0.0
Long-term Debt, Current Maturities		(7.0)	(7.0)
Senior Notes | Series B Notes
Debt Instrument [Line Items]
Par value			17.7
Premium/(Discount), Debt			(0.6)
Long-term debt			$ 17.1
Interest rate			10.00%
Effective Interest Rate			25.60%
Par Value, Current Maturities			$ (17.7)
Premium/(Discount), Current Maturities			0.6
Long-term Debt, Current Maturities			(17.1)
Lease financing obligations
Debt Instrument [Line Items]
Par value		278.0	285.1
Premium/(Discount), Debt		0.0	0.0
Long-term debt		$ 278.0	$ 285.1
Stated interest rate, minimum		10.00%	10.00%
Stated interest rate, floor		18.20%	18.20%
Effective Interest Rate		12.00%	12.00%
Par Value, Current Maturities		$ (8.9)	$ (6.8)
Premium/(Discount), Current Maturities		0.0	0.0
Long-term Debt, Current Maturities		$ (8.9)	(6.8)
Other
Debt Instrument [Line Items]
Par value			0.2
Premium/(Discount), Debt			0.0
Long-term debt			0.2
Par Value, Current Maturities			(0.2)
Premium/(Discount), Current Maturities			0.0
Long-term Debt, Current Maturities			$ (0.2)
2014 Financing [Member]
Debt Instrument [Line Items]
Sources of Funds	$ 1,040.0
Payments for Fees, Expenses and Original Issue Discount	50.8
Proceeds from Issuance of Preferred Stock and Preference Stock	35.0
2014 Financing [Member] | Series A Note [Member]
Debt Instrument [Line Items]
Repayments of debt, including accrued interest	$ 93.9