Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Income Statement [Abstract]
Net sales	$ 745.2	$ 695.6
Costs and expenses
Cost of sales	463.9	438.2
Selling, general and administrative expenses	184.0	169.0
Total costs and expenses	647.9	607.2
Operating income	97.3	88.4
Interest and debt expense, net	(5.4)	(7.1)
Non-service retirement benefit income	2.2	3.4
Other expense, net	(1.2)	(2.5)
Income before income taxes	92.9	82.2
Provision for income taxes	17.6	15.7
Net income	$ 75.3	$ 66.5
Basic earnings per common share:
Basic earnings per common share (in USD per share)	$ 2.09	$ 1.87
Weighted average basic common shares outstanding (in shares)	36.1	35.6
Diluted earnings per common share:
Diluted earnings per common share (in USD per share)	$ 2.02	$ 1.81
Weighted average diluted common shares outstanding (in shares)	37.2	36.8