Supplemental Guarantor Information HY (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Senior Notes due 2020 [Member]
Extinguishment of Debt, Amount	$ 84.6	$ 478.5	$ 182.7	$ 22.7