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Income Taxes - Effective Income Tax Rate and Amount Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 26, 2022 | Jun. 27, 2021 | Jun. 28, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Federal income tax provision at statutory rate | $ (60.1) | $ (71.4) | $ (43.2)
State tax provision, net of federal benefit | (2.5) | (1.9) | (1.9)
Tax exempt interest | (0.2) | (0.1) | (0.5)
(Decrease) increase in tax reserve | (0.2) | 0.0 | (0.3)
Research and development credits | (5.4) | (4.3) | (3.3)
Foreign tax credit | (0.3) | (0.4) | (0.3)
Increase (decrease) in valuation allowance | (51.6) | 75.0 | 50.3
Extinguishment of convertible notes | (4.5) | 0.0 | (6.0)
Stock-based compensation | (3.3) | (2.8) | 2.1
Statutory rate differences | 0.0 | 1.1 | 1.2
Tax on distributable foreign earnings | 6.8 | 2.7 | 0.3
Other foreign adjustments | 0.0 | (0.1) | 0.3
Net operating loss carryback | 0.0 | 0.0 | (7.2)
Provision to return adjustments | 0.3 | (0.2) | (1.3)
Impact of rate changes | 0.5 | 2.7 | 0.8
Expiration of state credits | 0.1 | 0.7 | 0.9
Corporate restructuring adjustment | 129.1 | 0.0 | 0.0
Other | 0.3 | 0.1 | 0.1
Income tax expense (benefit) | $ 9.0 | $ 1.1 | $ (8.0)
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Federal income tax provision at statutory rate | 21.00% | 21.00% | 21.00%
State tax provision, net of federal benefit | 1.00% | 1.00% | 1.00%
Tax exempt interest | 0.00% | 0.00% | 0.00%
(Decrease) increase in tax reserve | 0.00% | 0.00% | 0.00%
Research and development credits | 2.00% | 1.00% | 2.00%
Foreign tax credit | 0.00% | 0.00% | 0.00%
Increase (decrease) in valuation allowance | 18.00% | (22.00%) | (25.00%)
Extinguishment of convertible notes | 2.00% | 0.00% | 3.00%
Stock-based compensation | 1.00% | 1.00% | (1.00%)
Statutory rate differences | 0.00% | 0.00% | (1.00%)
Tax on distributable foreign earnings | (2.00%) | (1.00%) | 0.00%
Other foreign adjustments | 0.00% | 0.00% | 0.00%
Net operating loss carryback | 0.00% | 0.00% | 4.00%
Provision to return adjustments | 0.00% | 0.00% | 1.00%
Impact of rate changes | 0.00% | (1.00%) | 0.00%
Expiration of state credits | 0.00% | 0.00% | 0.00%
Corporate restructuring adjustment | (45.00%) | 0.00% | 0.00%
Other | 0.00% | 0.00% | 0.00%
Income tax expense (benefit) | (3.00%) | 0.00% | 4.00%

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