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IMPAIRMENT, RESTRUCTURING AND OTHER - Impairment, Restructuring and Other Charges (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 28, 2025
Dec. 28, 2024
Jun. 29, 2024
Jun. 28, 2025
Jun. 29, 2024
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges (recoveries), net $ 2.4   $ (0.8) $ 29.6 $ (5.9)
Total impairment, restructuring and other charges (recoveries), net 6.1   (3.3) 45.8 60.8
Loss on exchange of convertible debt investment   $ (7.0)      
Operating expenses          
Restructuring Cost and Reserve [Line Items]          
Loss on exchange of convertible debt investment     0.0   0.0
Restructuring and other charges (recoveries), net | Cost of sales—impairment, restructuring and other          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges (recoveries), net 3.7   (4.8) 9.2 59.3
Restructuring and other charges (recoveries), net | Operating expenses          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges (recoveries), net 2.4   (0.8) 22.7 (5.9)
Right-of-use asset impairments | Cost of sales—impairment, restructuring and other          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges (recoveries), net 0.0   2.3 4.5 3.3
Property, plant and equipment impairments | Cost of sales—impairment, restructuring and other          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges (recoveries), net $ 0.0   $ 0.0 $ 2.4 $ 4.1