Goodwill and Other Intangible Assets - Schedule of Changes in Goodwill (Details) - USD ($) $ in Millions				12 Months Ended
	Nov. 07, 2023	Aug. 15, 2022	Aug. 03, 2022	Jun. 29, 2024	Jul. 01, 2023
Changes in goodwill
Beginning balance				$ 695.1	$ 368.9
Goodwill, acquired during period				360.7
Ending balance				1,055.8	695.1
NeoPhotonics Corporation
Changes in goodwill
Goodwill, acquired during period					315.3
Ending balance			$ 315.3
IPG
Changes in goodwill
Goodwill, acquired during period					10.9
Ending balance		$ 10.9
Cloud Light Technology Limited
Changes in goodwill
Ending balance	$ 360.7
Cloud & Networking
Changes in goodwill
Beginning balance				683.9	357.7
Goodwill, acquired during period				360.7
Ending balance				1,044.6	683.9
Cloud & Networking | NeoPhotonics Corporation
Changes in goodwill
Goodwill, acquired during period			$ 318.3		315.3
Goodwill measurement of adjustment					(3.0)
Cloud & Networking | IPG
Changes in goodwill
Goodwill, acquired during period		$ 6.5			10.9
Goodwill measurement of adjustment					4.4
Cloud & Networking | Cloud Light Technology Limited
Changes in goodwill
Goodwill, acquired during period	$ 359.5
Goodwill measurement of adjustment				1.2
Industrial Tech
Changes in goodwill
Beginning balance				11.2	11.2
Goodwill, acquired during period				0.0
Ending balance				$ 11.2	11.2
Industrial Tech | NeoPhotonics Corporation
Changes in goodwill
Goodwill, acquired during period					0.0
Industrial Tech | IPG
Changes in goodwill
Goodwill, acquired during period					$ 0.0