Supplemental Guarantor Condensed Financial Information (Intercompany Cash And Non-Cash Transactions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Due from Related Parties, Noncurrent [Roll Forward]
Beginning Balance	$ 0.0
Cash transactions	0.0	$ 0.0	$ 0.0
Ending Balance	0.0	0.0
Parent Company [Member]
Due from Related Parties, Noncurrent [Roll Forward]
Beginning Balance	1,114.5	1,280.8	1,305.5
Deferred tax	(27.6)	(19.9)	21.4
Equity based awards	5.2	11.7	13.8
Foreign currency and other	28.4	0.2	5.1
Cash transactions	(28.1)	(158.3)	(65.0)
Ending Balance	$ 1,092.4	$ 1,114.5	$ 1,280.8