Overview And Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Reclassification [Line Items]
Total revenue	$ 993.6	$ 941.2	$ 1,909.0	$ 1,934.9
Amortization of purchased intangible assets	30.2	21.0	53.2	43.5
Total cost of sales	389.1	403.7	743.7	847.8
As Previously Reported
Reclassification [Line Items]
Total revenue		941.2		1,934.9
Amortization of purchased intangible assets		21.0		43.5
Total cost of sales		403.7		847.8
Product
Reclassification [Line Items]
Total revenue	490.5	531.0	924.9	1,097.8
Cost of sales:	233.9	268.8	450.1	575.7
Product | As Previously Reported
Reclassification [Line Items]
Total revenue		564.5		1,186.1
Cost of sales:		269.9		578.3
Product | Effect of Change in Presentation
Reclassification [Line Items]
Total revenue		(33.5)		(88.3)
Cost of sales:		(1.1)		(2.6)
Subscription and services
Reclassification [Line Items]
Total revenue	503.1	410.2	984.1	837.1
Cost of sales:	$ 125.0	113.9	$ 240.4	228.6
Subscription and services | Effect of Change in Presentation
Reclassification [Line Items]
Total revenue		410.2		837.1
Cost of sales:		113.9		228.6
Service | As Previously Reported
Reclassification [Line Items]
Total revenue		158.0		319.1
Cost of sales:		63.4		126.7
Service | Effect of Change in Presentation
Reclassification [Line Items]
Total revenue		(158.0)		(319.1)
Cost of sales:		(63.4)		(126.7)
Subscription | As Previously Reported
Reclassification [Line Items]
Total revenue		218.7		429.7
Cost of sales:		49.4		99.3
Subscription | Effect of Change in Presentation
Reclassification [Line Items]
Total revenue		(218.7)		(429.7)
Cost of sales:		$ (49.4)		$ (99.3)