Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Income Statement [Abstract]
Net sales	$ 805.7	$ 784.6
Costs and expenses
Cost of sales	492.5	492.6
Selling, general and administrative expenses	178.0	188.0
Total costs and expenses	670.5	680.6
Operating income	135.2	104.0
Interest and debt expense, net	(35.7)	(4.1)
Non-service retirement benefit income	2.8	2.5
Other expense, net	(1.0)	(1.4)
Income before income taxes	101.3	101.0
Provision for income taxes	16.6	18.8
Total	$ 84.7	$ 82.2
Basic earnings per common share (in USD per share)	$ 2.29	$ 2.25
Weighted average common shares outstanding (in shares)	37.0	36.6
Diluted earnings per common share (in USD per share)	$ 2.23	$ 2.17
Weighted average diluted common shares outstanding (in shares)	38.0	37.8