Finance Receivables - Additional Information (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 30, 2025 counterparty	Nov. 05, 2025 USD ($)	Sep. 30, 2025 USD ($) counterparty	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) counterparty portfolio	Sep. 30, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable
Benefit to provision expense			$ 301,499,000	$ (57,977,000)	$ 198,427,000	$ (175,017,000)
Length of mean reversion process					3 years
Number of portfolios | portfolio					2
Subsequent Event | Harley-Davidson Financial Services
Accounts, Notes, Loans and Financing Receivable
Noncontrolling interest, expected cash payment per counterparty		$ 23,000,000
Acquired ownership percentage per counterparty, noncontrolling owner		4.90%
Equity carrying value		1.75
Acquired ownership percentage, noncontrolling owner		9.80%
Right to exchange ownership interest		7 years
Right to repurchase ownership interest		3 years
Right to repurchase ownership interest, maximum annual percentage		0.33333
Minimum
Accounts, Notes, Loans and Financing Receivable
Length of economic forecast					1 year
Maximum
Accounts, Notes, Loans and Financing Receivable
Length of economic forecast					2 years
Harley-Davidson Financial Services
Accounts, Notes, Loans and Financing Receivable
Number of counterparties | counterparty			2		2
Benefit to provision expense			$ 338,200,000
Additional amount calculated in gain on sale			75,500,000
Retail
Accounts, Notes, Loans and Financing Receivable
Benefit to provision expense			$ 307,162,000	(55,831,000)	$ 206,386,000	(172,109,000)
Threshold period past due to be charged-off			120 days		120 days
Reversal of accrued interest against interest income			$ 7,100,000	6,900,000	$ 24,700,000	24,000,000.0
Retail | Harley-Davidson Financial Services
Accounts, Notes, Loans and Financing Receivable
Sales of retail finance receivables, transferred to special purpose entities, percent of residual interest			95.00%		95.00%
Number of counterparties | counterparty			2		2
Financing receivable, held for sale			$ 4,080,000,000.00		$ 4,080,000,000.00
Retail | Harley-Davidson Financial Services | Subsequent Event
Accounts, Notes, Loans and Financing Receivable
Number of counterparties | counterparty	2
New loan originations, term period	5 years
New loan originations expected to be purchased	0.66667
Wholesale
Accounts, Notes, Loans and Financing Receivable
Benefit to provision expense			(5,663,000)	(2,146,000)	(7,959,000)	(2,908,000)
Reversal of accrued interest against interest income			$ 1,800,000	0	$ 1,900,000	0
Increase (decrease) In accrued interest, write-off				$ 0		$ 0