Accumulated Other Comprehensive Loss, Net of Tax Reclassification of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	[1]	$ (4.2)	$ 14.9	$ 2.3	$ 13.7
Gains on available-for-sale securities		(0.1)	0.0	(1.3)	0.0
Losses on derivative instruments		0.5	0.5	1.5	1.5
Amortization of defined benefit pension and postretirement plans items	[2]	1.3	1.1	4.0	7.5
Tax effect		(1.3)	(2.2)	(1.9)	(3.6)
Reclassifications from accumulated other comprehensive loss to earnings, net of tax		$ 3.8	$ (14.3)	$ (4.6)	$ (19.1)

[1] These foreign currency translation adjustments are primarily a result of the sales of businesses

[2] These accumulated other comprehensive loss components are included in the computation of net periodic cost. See Note 9 for further information.