CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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	$ 38.8	$ 44.7	$ 99.7	$ 66.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	36.3	(4.9)	42.2	10.0
Defined benefit pension and other postretirement plan adjustments, net of tax of $(0.3), $0.4, $(0.4) and $0.6, respectively	(0.8)	1.2	(0.9)	1.6
Net loss on investment securities, net of tax of $(3.0) and $(2.9), respectively	(5.4)	0.0	(5.1)	0.0
Net (loss) gain on derivatives, net of tax of $(1.1), $0.7, $(0.3) and $0.5, respectively	(2.9)	1.4	(1.2)	0.7
Other comprehensive income (loss), net of tax	27.2	(2.3)	35.0	12.3
Comprehensive income	$ 66.0	$ 42.4	$ 134.7	$ 79.2