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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Disaggregation Of Revenue [Line Items] |  |  |
Period for credit risk identified |  | 30 days |
Sales revenues totaling | $ 4.2 | $ 6.5 |
Lease revenue | 126.8 | 245.3 |
Operating lease revenue | 125.8 | 243.6 |
Finance lease revenue | 1.0 | 1.7 |
Finance lease revenue, sales revenue | 0.9 | 1.5 |
Finance lease revenue, interest income | 0.1 | $ 0.2 |
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 | 34.3 | $ 34.3 | $ 16.8
Accounts Receivable [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Unbilled contract assets | $ 1.8 | $ 1.8 | $ 1.3

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