Financial Statement Details - Non-Operating Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 26, 2021	Dec. 27, 2020	Dec. 26, 2021	Dec. 27, 2020	Aug. 24, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Foreign currency gain, net	$ (0.2)	$ (2.2)	$ (0.3)	$ (2.4)
Realized gain on sale of investments	(0.1)	(0.2)	(0.3)	(0.2)
Loss on extinguishment of debt	24.8	0.0	24.8	0.0
Gain on equity investment, net	0.0	(10.4)	0.0	(7.0)
Interest income	(2.4)	(2.2)	(5.0)	(4.9)
Interest expense, net of capitalized interest	5.3	11.9	12.0	25.0
Loss on Wafer Supply Agreement	0.1	0.0	0.9	0.0
Other, net	0.3	0.0	(0.2)	0.3
Non-operating expense, net	27.8	$ (3.1)	$ 31.9	$ 10.8
Convertible Notes due September 1, 2023 \| Convertible Notes
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Loss on extinguishment of debt	$ 24.8
Debt Instrument [Line Items]
Stated interest rate (as a percent)					0.875%

Contractual interest rate for funds borrowed, under the debt agreement.

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