Goodwill and Other Intangible Assets - Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Oct. 02, 2021	Dec. 26, 2020	Jul. 03, 2021
Finite-Lived Intangible Assets
Gross Carrying Amounts	$ 560.0		$ 560.0
Accumulated Amortization	(340.2)		(318.8)
Net Carrying Amounts	219.8		241.2
Acquired developed technologies
Finite-Lived Intangible Assets
Gross Carrying Amounts	390.3		390.3
Accumulated Amortization	(254.9)		(238.6)
Net Carrying Amounts	$ 135.4		151.7
Weighted average remaining amortization period (years)	2 years 9 months 18 days	3 years
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amounts	$ 145.0		145.0
Accumulated Amortization	(60.6)		(55.5)
Net Carrying Amounts	$ 84.4		89.5
Weighted average remaining amortization period (years)	5 years 2 months 12 days	5 years 4 months 24 days
Order backlog
Finite-Lived Intangible Assets
Gross Carrying Amounts	$ 22.0		22.0
Accumulated Amortization	(22.0)		(22.0)
Net Carrying Amounts	0.0		0.0
Other intangibles
Finite-Lived Intangible Assets
Gross Carrying Amounts	2.7		2.7
Accumulated Amortization	(2.7)		(2.7)
Net Carrying Amounts	$ 0.0		$ 0.0