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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jul. 01, 2023
Jul. 02, 2022
Jul. 01, 2023
Jul. 02, 2022
Income Statement [Abstract]        
Revenue $ 455.3 $ 565.3 $ 1,020.3 $ 869.5
Cost of goods sold 234.1 307.1 514.3 406.6
Gross profit 221.2 258.2 506.0 462.9
Operating expenses:        
Selling, general and administrative 151.7 188.3 348.0 297.2
Research and development 40.2 47.8 90.7 83.9
Total operating expenses 191.9 236.1 438.7 381.1
Operating income 29.3 22.1 67.3 81.8
Non-operating (loss) income (4.5) 4.5 (16.3) 3.9
Income before provision for income taxes 24.8 26.6 51.0 85.7
Provision for income taxes 9.1 8.5 14.0 21.0
Net income $ 15.7 $ 18.1 $ 37.0 $ 64.7
Net income per share:        
Basic (in dollars per share) $ 0.30 $ 0.34 $ 0.70 $ 1.18
Diluted (in dollars per share) $ 0.29 $ 0.33 $ 0.68 $ 1.15
Weighted-average shares used in per share calculations:        
Basic (in shares) 52.8 53.9 52.7 54.7
Diluted (in shares) 54.4 55.3 54.3 56.4