Operating Segments and Geographic Information - Information on Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 28, 2024	Dec. 30, 2023
Information on reportable segments
Net revenue	$ 402.2	$ 366.8	$ 739.1	$ 684.4
Total segment profit	99.6	64.0	177.5	140.7
Selling, general and administrative	(76.3)	(85.1)	(152.6)	(158.1)
Stock-based compensation	(38.8)	(34.6)	(74.4)	(66.7)
Amortization of acquired intangibles	(39.0)	(37.6)	(80.7)	(66.6)
Restructuring and related charges	(0.7)	(5.8)	(10.4)	(16.8)
Intangible asset write-off	(6.2)
Interest expense	(5.6)	(9.7)	(11.1)	(19.4)
Other income, net	14.9	13.4	23.6	34.6
Consolidated loss before income taxes	(42.3)	(101.5)	(121.5)	(170.8)
Income on short-term investments and cash equivalents	18.4	17.1		38.8
Operating Segments
Information on reportable segments
Net revenue	402.2	366.8	739.1	684.4
Total segment profit	58.8	41.8	97.5	81.0
Operating Segments | Cloud & Networking
Information on reportable segments
Net revenue	339.2	286.7	621.5	516.4
Total segment profit	54.9	29.1	91.4	53.0
Operating Segments | Industrial Tech
Information on reportable segments
Net revenue	63.0	80.1	117.6	168.0
Total segment profit	3.9	12.7	6.1	28.0
Corporate, Non-Segment
Information on reportable segments
Selling, general and administrative	(27.1)	(28.8)	(55.8)	(57.4)
Stock-based compensation	(38.8)	(34.6)	(74.4)	(66.7)
Amortization of acquired intangibles	(39.0)	(37.6)	(80.7)	(66.6)
Amortization of acquired inventory fair value adjustments	0.0	(3.4)		(3.4)
Acquisition related costs	0.0	(9.0)	0.0	(13.0)
Integration related costs	(3.1)	(11.6)	(6.5)	(22.9)
Restructuring and related charges	(0.7)	(5.8)	(10.4)	(16.8)
Abnormal excess capacity	0.0	(1.8)	0.0	(1.8)
Intangible asset write-off	0.0	0.0	(1.9)	0.0
Other charges, net	(1.7)	(14.4)	(1.8)	(18.4)
Interest expense	(5.6)	(9.7)	(11.1)	(19.4)
Other income, net	14.9	13.4	23.6	34.6
Consolidated loss before income taxes	(42.3)	(101.5)	(121.5)	(170.8)
Income on short-term investments and cash equivalents	9.0		18.4
Net foreign exchange gains (losses)	$ 5.9	$ (3.7)	$ 5.2	$ (4.2)