Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income [Line Items]
Foreign Currency Translation Adjustment, Net of Tax		$ (53.6)	$ (29.8)	$ (53.6)	$ (29.8)	$ (41.6)	$ (33.7)	$ (20.3)	$ (19.2)
Pension and Other Postretirement Benefit Plans, Net of Tax			(67.2)		(67.2)			(68.5)	(70.3)
Available-for-sale Securities Adjustment, Net of Tax		2.5	2.5	2.5	2.5	2.6	2.6	2.5	2.0
Other, Net of Tax		(1.2)	(1.6)	(1.2)	(1.6)	(1.1)	(1.2)	(1.7)	(1.7)
Accumulated comprehensive loss		(146.3)	(96.1)	(146.3)	(96.1)	(136.5)	(131.3)	$ (88.0)	$ (89.2)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	[1]	0.1	0.0	0.3	0.0
Defined Benefit Plan, Amortization of Gains (Losses)	[1]	1.7	1.4	5.2	4.2
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax	[1]	0.0	0.4	0.0	1.1
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax		1.8	1.8	5.5	5.3
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, Tax		0.7	0.5	2.2	1.5
Foreign currency translation adjustments		(12.0)	(9.5)	(19.9)	(10.6)
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax			2.6		6.9
Unrealized gain on marketable securities		(0.1)	0.0	(0.1)	0.5
Other		(0.1)	0.1	0.0	0.1
Other comprehensive income		(11.0)	(6.8)	(18.3)	(3.1)
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax		1.2	(1.3)	3.3	(3.8)
Other comprehensive income (loss), net of tax		(9.8)	(8.1)	(15.0)	(6.9)
Defined benefit pension plans		(2.4)	1.3	5.0	(3.1)
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax		1.1	$ 1.3	3.3	$ 3.8
Pension Plan [Member]
Accumulated Other Comprehensive Income [Line Items]
Pension and Other Postretirement Benefit Plans, Net of Tax		(94.0)		(94.0)		$ (96.4)	$ (99.0)
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax		1.2		1.7
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax		1.2		3.3
Defined benefit pension plans		$ 2.4		$ 5.0

[1] These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 13 for additional details. The net periodic pension cost is included in Cost of sales and Selling and administrative expense in the Consolidated Statements of Income.