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IMPAIRMENT, RESTRUCTURING AND OTHER (Tables)
12 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Schedule of Impairment, Restructuring, and Other Charges The following table details impairment, restructuring and other charges (recoveries) for each of the periods presented:
Year Ended September 30,
202120202019
Cost of sales—impairment, restructuring and other:
COVID-19 related costs$25.0 $15.5 $— 
Restructuring and other charges (recoveries), net(0.3)(0.1)5.1 
Intangible asset and property, plant and equipment impairments— 0.6 0.8 
Operating expenses:
COVID-19 related costs4.2 3.9 — 
Restructuring and other charges (recoveries), net0.1 (3.1)7.4 
Impairment, restructuring and other charges from continuing operations29.0 16.8 13.3 
Restructuring and other charges (recoveries), net, from discontinued operations— (3.1)(35.8)
Total impairment, restructuring and other charges (recoveries)$29.0 $13.7 $(22.5)
Schedule of Reserve The following table summarizes the activity related to liabilities associated with restructuring and other, excluding insurance reimbursement recoveries, for each of the periods presented:
Year Ended September 30,
 202120202019
Amounts accrued for restructuring and other at beginning of year$3.9 $11.6 $112.2 
Restructuring and other charges from continuing operations29.0 20.0 13.4 
Restructuring and other charges (recoveries) from discontinued operations— — (22.4)
Payments and other(31.0)(27.7)(91.6)
Amounts accrued for restructuring and other at end of year $1.9 $3.9 $11.6