Amortized Cost Basis of Finance Receivables Modified by Portfolio Class (Detail) - Customer Retail - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Modified [Line Items]
Amortized cost basis of finance receivables	$ 183.7	$ 7.5
Financing receivable modifications percentage	1.30%	0.10%
Fleet
Financing Receivable, Modified [Line Items]
Amortized cost basis of finance receivables	$ 183.3	$ 7.5
Owner/Operator
Financing Receivable, Modified [Line Items]
Amortized cost basis of finance receivables	$ 0.4

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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