Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Income Statement [Abstract]
Net sales	$ 1,065.5	$ 1,193.1	$ 2,147.5	$ 2,374.8
Cost of sales	670.8	765.1	1,395.1	1,532.9
Gross profit	394.7	428.0	752.4	841.9
Operating expenses
Distribution	24.6	28.6	49.5	57.2
Research and development	29.4	32.2	58.4	63.3
Selling	150.1	171.1	300.4	339.0
Administration	126.1	132.6	256.4	267.6
Impairment charges	34.1	0.0	34.1	0.0
Restructuring	36.9	6.7	81.3	10.2
Other operating expense (income), net	20.0	0.0	54.0	(0.8)
Total operating expenses	421.2	371.2	834.1	736.5
Operating (loss) income	(26.5)	56.8	(81.7)	105.4
Interest expense, net	44.1	44.0	87.1	87.6
Other expense (income), net	3.4	(9.7)	3.8	(9.0)
Income (loss) from continuing operations before income taxes	(74.0)	22.5	(172.6)	26.8
Income tax (benefit) expense	31.7	13.6	(71.0)	19.0
Income (loss) from continuing operations	(105.7)	8.9	(101.6)	7.8
Income (loss) from discontinued operations, net of tax	(2.7)	(0.5)	(4.8)	(2.4)
Net income (loss)	$ (108.4)	$ 8.4	$ (106.4)	$ 5.4
Basic
Continuing operations (in dollars per share)	$ (0.77)	$ 0.07	$ (0.74)	$ 0.06
Discontinued operations (in dollars per share)	(0.02)	0	(0.04)	(0.02)
Basic earnings (loss) per share (in dollars per share)	(0.79)	0.06	(0.78)	0.04
Diluted
Continuing operations (in dollars per share)	(0.77)	0.06	(0.74)	0.06
Discontinued operations (in dollars per share)	(0.02)	0	(0.04)	(0.02)
Diluted earnings (loss) per share (in dollars per share)	$ (0.79)	$ 0.06	$ (0.78)	$ 0.04
Weighted-average shares outstanding
Basic (in shares)	137.1	135.3	136.9	135.1
Diluted (in shares)	137.1	136.6	136.9	136.5