Supplemental Guarantor Information -Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	$ 63.7	$ 70.0
Consolidating Adjustments [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	(198.5)	(177.7)
Parent Guarantor [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	63.7	70.0
Subsidiary Issuer [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	63.7	70.0
Guarantor Subsidiaries [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	119.7	111.0
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	15.1	(3.3)
Co-Issuer [Member]
Supplemental Guarantor Information [Line Items]
Comprehensive income (loss)	$ 0.0	$ 0.0