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Finance and Other Receivables - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Accrued interest receivable | $ 67.8 | $ 67.8 |  | $ 44.1
Loans accounted for as troubled debt restructurings |  |  | $ 38.1 | 31.1
Repossessed inventory | $ 15.7 | 15.7 |  | $ 9.2
Proceeds from the sales of repossessed assets |  | $ 10.3 | $ 11.3 |
ASU 2022-02 |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable modifications weighted average term extension | 6 months | 20 months |  |
Change in accounting principle, accounting standards update, adopted [true false] | true | true |  |
Change in accounting principle, accounting standards update adoption date | Jan. 01, 2023 | Jan. 01, 2023 |  |
Customer Retail | ASU 2022-02 |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable modifications percentage | 0.00% | 0.10% |  |
Customer Retail | ASU 2022-02 | Fleet |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Amortized cost basis of finance receivables | $ 0.6 | $ 6.6 |  |
Customer Retail | ASU 2022-02 | Owner/Operator |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Amortized cost basis of finance receivables | 0.0 | $ 0.0 |  |
Financial Services |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Months contractual terms extended |  | 5 months |  | 3 months
Amortized cost basis of finance receivables | 61.0 | $ 61.0 |  | $ 54.4
Financial Services | Customer Retail | Fleet |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Amortized cost basis of finance receivables | 55.4 | 55.4 |  | 50.1
Financial Services | Customer Retail | Owner/Operator |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Amortized cost basis of finance receivables | $ 5.6 | $ 5.6 |  | $ 3.6
Financial Services | Loans and Leases | Minimum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Contractual terms of retails loans and finance leases |  | 3 years |  |
Financial Services | Loans and Leases | Maximum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Contractual terms of retails loans and finance leases |  | 5 years |  |
Financial Services | Financing Receivable | Maximum | Revenue Benchmark | Customer Concentration Risk |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of portfolio assets |  | 5.00% |  |

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