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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2021
Disaggregation Of Revenue [Line Items] |  |  |
Period for credit risk identified |  | 30 days |
Sales revenues totaling | $ 2.4 | $ 8.8 |
Lease revenue | 136.5 | 381.8 |
Operating lease revenue | 136.2 | 379.7 |
Finance lease revenue | 0.3 | 2.1 |
Finance lease revenue, sales revenue | 0.2 | 1.8 |
Finance lease revenue, interest income | 0.1 | $ 0.3 |
Period for warranties for rental equipment |  | 90 days |
Period for warranties for equipment manufactured |  | 1 year |
Deferred Income [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Customer contract liability | 35.8 | $ 35.8 | $ 16.8
Accounts Receivable [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Unbilled contract assets | $ 1.0 | $ 1.0 | $ 1.3

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