Condensed Consolidated Statements of Income - USD ($) shares in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Income Statement [Abstract]
Net sales	$ 1,121,000,000.0	$ 743,300,000	$ 1,926,700,000	$ 1,527,900,000
Costs and expenses
Cost of sales	663,100,000	460,600,000	1,155,600,000	953,200,000
Selling, general and administrative expenses	320,700,000	163,200,000	488,900,000	341,600,000
Acquired intangible asset amortization	32,800,000	9,700,000	42,600,000	19,300,000
Total costs and expenses	1,016,600,000	633,500,000	1,687,100,000	1,314,100,000
Operating income	104,400,000	109,800,000	239,600,000	213,800,000
Interest and debt expense, net	(21,200,000)	(3,700,000)	(56,900,000)	(7,800,000)
Non-service retirement benefit income	2,800,000	3,200,000	5,600,000	5,700,000
Other income (expense), net	6,100,000	(1,400,000)	5,100,000	(2,800,000)
Income before income taxes	92,100,000	107,900,000	193,400,000	208,900,000
Provision for income taxes	27,400,000	14,200,000	44,000,000.0	33,000,000.0
Total	$ 64,700,000	$ 93,700,000	$ 149,400,000	$ 175,900,000
Basic earnings per common share (in USD per share)	$ 1.52	$ 2.55	$ 3.76	$ 4.81
Weighted average common shares outstanding (in shares)	42.5	36.7	39.7	36.6
Diluted earnings per common share (in USD per share)	$ 1.48	$ 2.48	$ 3.66	$ 4.65
Weighted average diluted common shares outstanding (in shares)	43.6	37.8	40.8	37.8