Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income [Line Items]
Foreign Currency Translation Adjustment, Net of Tax		$ (49.0)	$ (41.5)	$ (55.1)	$ (33.7)
Foreign currency translation adjustments		6.1	(7.8)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Exchange Rate Changes, Net of Tax		(0.8)	0.5
Pension and Other Postretirement Benefit Plans, Net of Tax		(93.2)	(97.4)	(93.3)	(99.0)
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax		0.9	1.1
Defined benefit pension plans		0.1	1.6
Available-for-sale Securities Adjustment, Net of Tax		3.3	2.6	3.3	2.6
Unrealized gain on marketable securities		0.0	0.0
Other, Net of Tax		(1.0)	(1.1)	(1.0)	(1.2)
Other		0.0	0.1
Other comprehensive income		5.3	(7.2)
Other comprehensive income (loss), net of tax		6.2	(6.1)
Accumulated comprehensive loss		(139.9)	(137.4)	$ (146.1)	$ (131.3)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	[1]	0.1	0.1
Defined Benefit Plan, Amortization of Gains (Losses)	[1]	1.4	1.8
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax		1.5	1.9
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax		0.6	0.8
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax		$ 0.9	$ 1.1

[1] These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 12 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.