CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Income Statement [Abstract]
Revenue	$ 2,048.1	$ 2,035.8	$ 1,239.2
Cost of goods sold	1,044.6	977.0	430.8
Gross profit	1,003.5	1,058.8	808.4
Operating expenses:
Selling, general and administrative	664.0	657.4	395.4
Research and development	175.2	191.4	137.2
Litigation settlements	17.8	0.0	0.0
Impairment charge	10.0	0.0	0.0
Total operating expenses	867.0	848.8	532.6
Operating income	136.5	210.0	275.8
Non-operating loss	(48.4)	(16.6)	(1.4)
Income before provision for income taxes	88.1	193.4	274.4
Provision for income taxes	6.6	49.9	44.8
Net income	$ 81.5	$ 143.5	$ 229.6
Net income per share:
Basic (in dollars per share)	$ 1.54	$ 2.68	$ 4.16
Diluted (in dollars per share)	$ 1.51	$ 2.60	$ 3.98
Weighted-average shares used in per share calculations:
Basic (in shares)	52.8	53.6	55.2
Diluted (in shares)	54.1	55.2	57.7

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