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Trade Accounts and Notes Receivable - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2020 | Mar. 31, 2020 | Mar. 31, 2021
Accounts Notes And Loans Receivable [Line Items] |  |  |
Promissory notes receivable maturity month and year |  |  | 2023-01
Secured Promissory Note |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Value of notes with customer |  | $ 10.0 |
Term of the notes |  | 3 years |
Monthly principal and interest payments |  | $ 0.3 |
Frequency of payments |  | monthly | monthly
Short-Term Promissory Note |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Value of notes with customer | $ 13.2 |  |
Interest rate of the notes | 8.00% |  |
Maturity date | Mar. 31, 2021 |  |
Manufactured Rental Equipment |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Promissory notes receivable maximum interest rate |  |  | 8.00%
Product |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Partially financed product sale |  | $ 12.5 |

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