Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024
Income Statement [Abstract]
Sales	$ 682.1	$ 633.1	$ 1,299.0	$ 1,256.7
Cost of sales	312.2	306.5	593.1	573.8
Gross profit	369.9	326.6	705.9	682.9
Operating expenses:
Selling, general and administrative	295.3	302.5	567.0	587.4
Research and development	28.3	23.6	53.6	46.9
Goodwill and intangible asset impairments	0.0	1,153.8	0.0	1,153.8
Operating profit (loss)	46.3	(1,153.3)	85.3	(1,105.2)
Nonoperating (expense) income:
Nonoperating other income (expense), net	2.4	(1.1)	1.7	(1.0)
Interest expense, net	(8.0)	(11.7)	(17.3)	(24.6)
Income (loss) before income taxes	40.7	(1,166.1)	69.7	(1,130.8)
Income tax expense (benefit)	14.3	(14.5)	25.3	(2.8)
Net income (loss)	$ 26.4	$ (1,151.6)	$ 44.4	$ (1,128.0)
Earnings (loss) per share:
Earnings (loss) - basic (in USD per share)	$ 0.16	$ (6.69)	$ 0.26	$ (6.56)
Earnings (loss) - diluted (in USD per share)	$ 0.16	$ (6.69)	$ 0.26	$ (6.56)
Average common stock and common equivalent shares outstanding:
Basic (in shares)	169.0	172.1	170.7	172.0
Diluted (in shares)	169.9	172.1	171.7	172.0