Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Income Statement [Abstract]
Net sales	$ 1,121.7	$ 981.1	$ 2,196.2	$ 1,991.1
Cost of sales	749.6	632.1	1,486.3	1,273.7
Gross profit	372.1	349.0	709.9	717.4
Operating expenses
Distribution	29.5	24.1	53.9	45.8
Research and development	31.5	33.0	60.8	64.1
Selling	150.8	139.8	286.4	275.2
Administration	157.8	110.4	280.1	237.6
Impairment charges	0.0	158.6	0.0	158.6
Restructuring	9.5	9.0	13.1	10.7
Other operating expense (income), net	(0.1)	0.0	0.8	0.0
Total operating expenses	379.0	474.9	695.1	792.0
Operating income (loss)	(6.9)	(125.9)	14.8	(74.6)
Interest expense, net	38.3	31.6	74.1	63.6
Other (income) expense, net	53.8	(0.4)	52.7	1.9
Loss on extinguishment of debt	9.3	0.0	9.3	0.0
Income (loss) from continuing operations before income taxes	(108.3)	(157.1)	(121.3)	(140.1)
Income tax expense (benefit)	(43.4)	(45.2)	(55.1)	(31.0)
Income (loss) from continuing operations	(64.9)	(111.9)	(66.2)	(109.1)
Income (loss) from discontinued operations, net of tax	(0.2)	54.2	(1.4)	89.5
Net income (loss)	$ (65.1)	$ (57.7)	$ (67.6)	$ (19.6)
Basic
Continuing operations (in dollars per share)	$ (0.48)	$ (0.84)	$ (0.49)	$ (0.82)
Discontinued operations (in dollars per share)	0	0.41	(0.01)	0.67
Basic earnings (loss) per share (in dollars per share)	(0.48)	(0.43)	(0.50)	(0.15)
Diluted
Continuing operations (in dollars per share)	(0.48)	(0.84)	(0.49)	(0.82)
Discontinued operations (in dollars per share)	0	0.41	(0.01)	0.67
Diluted earnings (loss) per share (in dollars per share)	$ (0.48)	$ (0.43)	$ (0.50)	$ (0.15)
Weighted-average shares outstanding
Basic (in shares)	134.6	133.6	134.3	133.4
Diluted (in shares)	134.6	133.6	134.3	133.4