Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income		$ 127.0	$ 58.2
Foreign currency translation, net	[1]	14.2	6.5
Unrealized loss from hedge accounting, net	[2]	3.2	(0.4)
Other comprehensive income, net		17.4	6.1
Comprehensive income		144.4	64.3
Tax expense (benefit) on foreign currency translation		(0.1)	0.0
Tax expense (benefit) on unrealized loss from hedge accounting		$ 1.1	$ (0.3)

[1] (1) Net of tax benefit of $0.1 million and zero for the three months ended March 31, 2018 and 2017, respectively.

[2] (2) Net of tax expense of $1.1 million and a tax benefit of $0.3 million for the three months ended March 31, 2018 and 2017, respectively.