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Allowance for Doubtful Accounts (Tables)
3 Months Ended
Dec. 31, 2023
Receivables [Abstract]  
Schedule of Financing Receivable, Allowance for Credit Loss
Activity in the allowance for doubtful accounts for the three months ended December 31, 2023 was as follows:
(in millions)
Balance as of September 30, 2023$59.9 
Recovery of bad debts(0.5)
Other0.5 
Balance as of December 31, 2023$59.9