v3.26.1
Income Taxes - Schedule of Effective Income Tax Rate and Amount Reconciliation (Previous Year) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Jun. 30, 2024
Amount        
Federal income tax provision at statutory rate $ 89.0 $ (87.0) $ (340.0) $ (120.2)
State tax provision, net of federal benefit 0.0 0.1 (13.8) (5.0)
Tax exempt interest     (0.1) (0.4)
(Decrease) increase in tax reserve     (0.4) (2.0)
Research and development credits     (7.3) (9.7)
Increase (decrease) in valuation allowance (186.2) 88.4 309.1 127.0
Stock-based compensation 21.9 0.0 14.2 8.8
Foreign Tax Effects 0.4 1.1 0.1 0.0
Foreign earnings taxed in U.S.     3.5 0.4
Goodwill Impairment     23.1 0.0
Provision to return adjustments     0.9 (0.4)
Impact of rate changes     (3.4) 0.4
Expiration of attributes     0.1 2.0
Pre-petition charges     4.1 0.0
Other 3.8 (1.2) 0.2 0.2
Income tax expense (benefit) $ 3.5 $ 1.4 $ (9.7) $ 1.1
Percent        
Federal income tax provision at statutory rate 21.00% 21.00% 21.00% 21.00%
State tax provision, net of federal benefit 0.00% 0.00% 1.00% 1.00%
Tax exempt interest     0.00% 0.00%
(Decrease) increase in tax reserve     0.00% 0.00%
Research and development credits     1.00% 2.00%
Increase (decrease) in valuation allowance (44.00%) (21.30%) (19.00%) (22.00%)
Stock-based compensation 5.20% 0.00% (1.00%) (2.00%)
Foreign Tax Effects 0.10% (0.30%) 0.00% 0.00%
Foreign earnings taxed in U.S.     0.00% 0.00%
Goodwill Impairment     (1.00%) 0.00%
Provision to return adjustments     0.00% 0.00%
Impact of rate changes     0.00% 0.00%
Expiration of attributes     0.00% 0.00%
Pre-petition charges     0.00% 0.00%
Other 0.90% 0.30% 0.00% 0.00%
Income tax expense and effective tax rate 0.80% (0.30%) 1.00% 0.00%