Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Income Statement [Abstract]
Sales	$ 662.4	$ 645.8	$ 1,289.6	$ 1,277.2
Cost of sales	283.8	276.0	548.3	533.3
Gross profit	378.6	369.8	741.3	743.9
Operating expenses:
Selling, general and administrative	272.9	279.5	539.0	537.7
Research and development	26.8	25.1	51.3	49.5
Operating profit	78.9	65.2	151.0	156.7
Nonoperating income (expense):
Other income	7.1	0.3	7.4	0.6
Interest expense, net	(17.4)	(6.4)	(34.1)	(12.3)
Income before income taxes	68.6	59.1	124.3	145.0
Income tax expense	16.7	14.6	28.6	30.1
Income from continuing operations, net of tax	51.9	44.5	95.7	114.9
Income from discontinued operations, net of tax (Note 3)	0.0	2.6	0.0	7.1
Net income	$ 51.9	$ 47.1	$ 95.7	$ 122.0
Earnings per share:
Earnings from continuing operations - basic (in USD per share)	$ 0.32	$ 0.27	$ 0.58	$ 0.71
Earnings from continuing operations - diluted (in USD per share)	0.29	0.25	0.54	0.64
Earnings (loss) from discontinued operations - basic (in USD per share)	0	0.02	0	0.04
Earnings (loss) from discontinued operations - diluted (in USD per share)	0	0.01	0	0.04
Earnings - basic (in USD per share)	0.32	0.29	0.58	0.75
Earnings - diluted (in USD per share)	$ 0.29	$ 0.26	$ 0.54	$ 0.68
Average common stock and common equivalent shares outstanding:
Basic (in shares)	164.0	162.9	163.8	162.6
Diluted (in shares)	176.3	178.5	176.9	179.2