Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 784.6	$ 745.2
Costs and expenses
Cost of sales	492.6	463.9
Selling, general and administrative expenses	188.0	184.0
Total costs and expenses	680.6	647.9
Operating income	104.0	97.3
Interest and debt expense, net	(4.1)	(5.4)
Non-service retirement benefit income	2.5	2.2
Other expense, net	(1.4)	(1.2)
Income before income taxes	101.0	92.9
Provision for income taxes	18.8	17.6
Net income	$ 82.2	$ 75.3
Basic earnings per common share (in USD per share)	$ 2.25	$ 2.09
Weighted average common shares outstanding (in shares)	36.6	36.1
Diluted earnings per common share (in USD per share)	$ 2.17	$ 2.02
Weighted average diluted common shares outstanding (in shares)	37.8	37.2