(Reclassifications AOCI) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Net sales		$ 1,839.9	$ 1,717.4	$ 1,599.1
Cost of goods and services sold		(1,234.2)	(1,172.0)	(1,086.2)
Interest expense		(8.5)	(8.4)	(7.8)
Pension settlement charge		3.5	0.0	0.0
Income before income taxes		291.8	240.7	222.4
Tax expense		(59.0)	(41.4)	(80.9)
Net income		241.7	206.9	$ 150.7
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Net income		3.8	(0.8)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Losses on Cash Flow Hedges [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Income before income taxes		8.4	(1.6)
Tax expense		(2.6)	0.4
Net income		5.8	(1.2)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Losses on Cash Flow Hedges [Member] | Foreign Currency Contract [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Net sales		1.0	(0.7)
Cost of goods and services sold		1.0	(0.5)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Losses on Cash Flow Hedges [Member] | Interest Rate Swap Contracts [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Interest expense		6.9	0.0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Losses on Cash Flow Hedges [Member] | Forward Treasury Locks [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Interest expense		(0.5)	(0.4)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Pension and Other Postretirement Plans [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Prior service credit	[1]	0.6	2.0
Actuarial (loss) gain	[1]	0.2	(1.4)
Income before income taxes		(2.7)	0.6
Tax expense		0.7	(0.2)
Net income		$ (2.0)	$ 0.4

[1] (a) These components are included in the computation of net periodic benefit cost. Please refer to Note 15, Benefit Plans, for additional details.