CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Income Statement [Abstract]
Revenue	$ 478.9	$ 549.3	$ 1,499.2	$ 1,418.8
Cost of goods sold	244.1	266.8	758.4	673.4
Gross profit	234.8	282.5	740.8	745.4
Operating expenses:
Selling, general and administrative	156.1	174.6	504.1	471.6
Research and development	46.5	53.1	137.2	137.1
Impairment charge	7.0	0.0	7.0	0.0
Total operating expenses	209.6	227.7	648.3	608.7
Operating income	25.2	54.8	92.5	136.7
Non-operating (loss) income	(11.2)	(2.8)	(27.5)	1.0
Income before provision for income taxes	14.0	52.0	65.0	137.7
Provision for income taxes	3.4	14.1	17.4	35.1
Net income	$ 10.6	$ 37.9	$ 47.6	$ 102.6
Net income per share:
Basic (in dollars per share)	$ 0.20	$ 0.72	$ 0.90	$ 1.90
Diluted (in dollars per share)	$ 0.20	$ 0.70	$ 0.88	$ 1.85
Weighted-average shares used in per share calculations:
Basic (in shares)	52.8	52.5	52.8	54.0
Diluted (in shares)	53.9	54.1	54.2	55.6

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4