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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revision of Prior Period Comprehensive Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 03, 2025
Sep. 27, 2024
Sep. 29, 2023
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net (loss) income $ (69.9) $ (48.3) $ 47.9
Total comprehensive (loss) income (72.2) (50.0) 46.6
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ (72.6) (50.5) 46.1
As Previously Reported      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net (loss) income   (47.2) 48.7
Total comprehensive (loss) income   (48.9) 47.4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent   (49.4) 46.9
Revision      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Net (loss) income   (1.1) (0.8)
Total comprehensive (loss) income   (1.1) (0.8)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent   $ (1.1) $ (0.8)