Accumulated Other Comprehensive Loss Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold	$ 562.8	$ 587.0	$ 590.9	$ 557.9	$ 573.5	$ 599.1	$ 563.3	$ 514.5	$ 2,298.6	$ 2,250.4	$ 2,113.4
Income before income taxes									418.6	485.5	473.8
Provision for income taxes									(136.5)	(158.3)	(144.0)
Amounts reclassified from accumulated other comprehensive loss									(7.1)	(1.4)	(8.0)
Cash Flow Hedge (Loss) Gain
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive loss									0.3	0.7	0.3
Cash Flow Hedge (Loss) Gain | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes									0.4	1.0
Provision for income taxes									(0.1)	(0.3)
Amounts reclassified from accumulated other comprehensive loss									0.3	0.7
Prior-service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated other comprehensive income, current period, before tax									0.2	0.8
Actuarial gains/(losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated other comprehensive income, current period, before tax									(12.1)	(3.8)
Pension and Post Retirement Benefit Plan Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes									4.5	0.9
Reclassification from Accumulated other comprehensive income, current period, before tax									(11.9)	(3.0)
Amounts reclassified from accumulated other comprehensive loss									(7.4)	(2.1)	$ (8.3)
Forward Contracts | Cash Flow Hedge (Loss) Gain | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold									$ 0.4	$ 1.0