v3.22.2.2
IMPAIRMENT, RESTRUCTURING AND OTHER - Schedule of Impairment, Restructuring, and Other Charges (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (recoveries) $ 693.1 $ 4.3 $ 0.8
Impairment, restructuring and other charges from continuing operations 853.2 29.0 16.8
Restructuring and other charges (recoveries), net, from discontinued operations 0.0 0.0 (3.1)
Total impairment, restructuring and other charges 853.2 29.0 13.7
Restructuring Reserve      
Amounts accrued for restructuring activities at beginning of year 1.9 3.9 11.6
Restructuring and other charges from continuing operations 47.1 29.0 20.0
Payments and other (17.5) (31.0) (27.7)
Amounts accrued for restructuring activities at end of year 31.5 1.9 3.9
Operating expenses      
Restructuring Cost and Reserve [Line Items]      
Gains on sale of property, plant and equipment (16.2) 0.0 0.0
COVID-19 related costs | Cost of sales      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs 0.0 25.0 15.5
COVID-19 related costs | Operating expenses      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs 0.0 4.2 3.9
Restructuring and other charges (recoveries), net | Cost of sales      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (recoveries) 143.6 (0.3) (0.1)
Restructuring and other charges (recoveries), net | Operating expenses      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (recoveries) 40.9 0.1 (3.1)
Property, plant and equipment impairments | Cost of sales      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (recoveries) 16.6 0.0 0.6
Goodwill and intangible asset impairments | Operating expenses      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (recoveries) $ 668.3 $ 0.0 $ 0.0