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Cloud Computing Arrangements (Tables)
9 Months Ended
Jun. 30, 2025
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Capitalized Computer Software, Net Capitalized costs to implement cloud computing arrangements at cost and accumulated amortization were as follows:
June 30, 2025September 30, 2024
Short-term portion
$10.4 $10.2 
Long-term portion
61.2 60.6 
Total Capitalized implementation costs
$71.6 $70.8 
Less: accumulated amortization(14.2)(6.3)
Total Capitalized implementation costs, net
$57.4 $64.5 
Costs amortized during the three and nine months ended June 30, 2025 and 2024 are included in Other operating expenses and were as follows:
 Three months ended June 30,Nine months ended June 30,
2025202420252024
Amortization of cloud computing arrangements
$2.6 $2.2 $7.8 $3.8