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Receivables - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2022 | Sep. 30, 2021
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for doubtful accounts at beginning of period | $ 3.6 | $ 4.2 | $ 9.6
Provision for doubtful accounts, net of recoveries | 0.6 | 3.0 | (5.5)
Charge-off of accounts |  | (0.5) | (0.5)
Allowance for doubtful accounts at end of period | 4.2 | 6.7 | 3.6
Finance Receivables |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for doubtful accounts at beginning of period | 0.6 | 0.5 | 2.7
Provision for doubtful accounts, net of recoveries | (0.1) | (0.3) | 2.1
Charge-off of accounts |  | (0.1) |
Allowance for doubtful accounts at end of period | 0.5 | 0.1 | 0.6
Trade and Other Receivables |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for doubtful accounts at beginning of period | 3.0 | 3.7 | 6.9
Provision for doubtful accounts, net of recoveries | 0.7 | (3.3) | (3.4)
Charge-off of accounts |  | (0.4) | (0.5)
Allowance for doubtful accounts at end of period | $ 3.7 | $ 6.6 | $ 3.0

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