Supplemental Guarantor Condensed Financial Information (Intercompany Cash And Non-Cash Transactions) (Details) - Parent [Member] - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Related Party [Roll Forward]
Beginning Balance	$ 1,092.4	$ 1,114.5
Non-cash transactions
Deferred tax	0.0	(27.6)
Equity based awards	(0.8)	5.2
Foreign currency and other	(0.2)	28.4
Cash transactions	(35.5)	(28.1)
Ending Balance	$ 1,055.9	$ 1,092.4