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IMPAIRMENT, RESTRUCTURING AND OTHER (Tables)
12 Months Ended
Sep. 30, 2023
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,
202320222021
Cost of sales—impairment, restructuring and other:
Restructuring and other charges (recoveries), net$148.5 $143.6 $(0.3)
Right-of-use asset impairments25.8 — — 
Property, plant and equipment impairments11.4 16.6 — 
COVID-19 related costs— — 25.0 
Operating expenses—impairment, restructuring and other:
Goodwill and intangible asset impairments127.9 668.3 — 
Convertible debt other-than-temporary impairments101.3 — — 
Restructuring and other charges, net51.2 40.9 0.1 
Gains on sale of property, plant and equipment— (16.2)— 
COVID-19 related costs— — 4.2 
Total impairment, restructuring and other charges$466.1 $853.2 $29.0 
Schedule of Reserve
The following table summarizes the activity related to liabilities associated with restructuring activities for each of the periods presented:
Year Ended September 30,
 202320222021
Amounts accrued at beginning of year$31.5 $1.9 $3.9 
Restructuring charges55.6 47.1 29.0 
Payments(46.6)(17.5)(31.0)
Amounts accrued at end of year $40.5 $31.5 $1.9