Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income		$ 141.0	$ 117.5	$ 198.7	$ 195.3
Foreign currency translation, net	[1]	18.9	(35.0)	25.4	(42.9)
Unrealized loss from hedge accounting, net	[2]	(1.2)	0.0	(1.6)	0.0
Other comprehensive income (loss), net		17.7	(35.0)	23.8	(42.9)
Comprehensive income		158.7	82.5	222.5	152.4
Tax (expense) benefit on foreign currency translation		0.1	$ 0.3	0.1	$ 0.3
Tax (expense) benefit on unrealized loss from hedge accounting		$ 0.8		$ 1.1

[1] (1) Net of tax (expense) benefit of $0.1 million and $0.3 million for three months ended June 30, 2017 and 2016, and net of tax (expense) benefit of $0.1 million and $0.3 million for six months ended June 30, 2017 and 2016, respectively.

[2] (2) Net of tax benefit of $0.8 million and $1.1 million for three and six months ended June 30, 2017.