v3.25.4
Net Income (Loss) Per Share - Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Dec. 27, 2025
Sep. 27, 2025
Dec. 28, 2024
Sep. 28, 2024
Dec. 27, 2025
Dec. 28, 2024
Numerator:            
Net income (loss) $ (14.8) $ (20.6) $ 1.8 $ (23.1) $ (35.4) $ (21.3)
Denominator:            
Weighted-average shares - basic (in shares) 38.9   39.7   38.9 39.7
Effect of dilutive share-based awards (in shares) 0.0   0.1   0.0 0.0
Weighted-average shares - diluted (in shares) 38.9   39.8   38.9 39.7
Net income (loss) per share:            
Basic (in dollars per share) $ (0.38)   $ 0.05   $ (0.91) $ (0.54)
Diluted (in dollars per share) $ (0.38)   $ 0.05   $ (0.91) $ (0.54)