Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 01, 2022	Mar. 26, 2021
Net sales	$ 490.9	$ 558.0
Cost of sales	315.2	307.6
Gross profit	175.7	250.4
Selling, general and administrative expenses	152.5	136.0
Research and development expenses	37.2	66.2
Restructuring charges, net	6.8	0.4
Non-restructuring impairment charges	0.0	64.5
Losses on divestiture	0.0	0.8
Operating loss	(20.8)	(17.5)
Interest expense	(58.2)	(59.6)
Interest income	0.4	1.9
Other (expense) income, net	(4.1)	8.1
Reorganization items, net	(43.4)	(93.5)
Loss from continuing operations before income taxes	(126.1)	(160.6)
Income tax benefit	(5.9)	(16.4)
Loss from continuing operations	(120.2)	(144.2)
Income from discontinued operations, net of income taxes	0.6	0.3
Net loss	$ (119.6)	$ (143.9)
Basic (loss) income per share (Note 6):
Loss from continuing operations	$ (1.42)	$ (1.70)
Income from discontinued operations	0.01	0
Net loss	$ (1.41)	$ (1.70)
Basic weighted-averaged shares outstanding (in shares)	84.7	84.6
Diluted (loss) income per share (Note 6):
Loss from continuing operations	$ (1.42)	$ (1.70)
Income from discontinued operations	0.01	0
Net loss	$ (1.41)	$ (1.70)
Diluted weighted-average shares outstanding (in shares)	84.7	84.6
Retained Earnings (Deficit)
Net loss	$ (119.6)	$ (143.9)