Fair Value - Schedule of Fair Value, Cash Flows Received/Paid to all Motorcycle Loan Securitization Trusts (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Proceeds from sale of finance receivables initially held for investment		$ 3,685,613	$ 0	$ 0
Collections of retained securitization beneficial interests		23,722	$ 0	$ 0
Harley-Davidson Financial Services \| Retail
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Proceeds from sale of finance receivables initially held for investment	$ 234,600	234,617
Servicing, late, and ancillary fees received		8,521
Collections of retained securitization beneficial interests		23,722
Restricted cash divested from deconsolidation	$ 109,200	$ 109,200

Deconsolidated Variable Interest Entity, Servicing, Late And Ancillary Fees

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Amount of cash inflow from collection on beneficial interest in securitization of receivables.

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The cash inflow associated with the sale of receivables arising from the financing of goods and services.

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