Derivative Financial Instruments and Hedging Activities - Schedule of Amount of Gains and Losses Recognized in Income Related to Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivative
Motorcycles and related products cost of goods sold	$ 798,683	$ 618,580	$ 2,320,261	$ 2,566,272
Selling, administrative and engineering expense	292,885	273,879	849,098	870,985
Interest expense	10,182	7,707	25,564	23,066
Financial services interest expense	75,883	94,463	258,391	276,943
Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(4,435)	64,997	155,044	29,243
Foreign currency contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(6,293)	6,749	2,855	13,718
Foreign currency contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Motorcycles and related products cost of goods sold
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(6,293)	6,749	2,855	13,718
Commodity contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(39)	(62)	19	(306)
Commodity contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Motorcycles and related products cost of goods sold
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(39)	(62)	19	(306)
Cross-currency swaps \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	2,227	58,669	153,216	16,523
Cross-currency swaps \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Selling, administrative & engineering expense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	2,227	58,669	153,216	16,523
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(181)	(210)	(603)	(247)
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Interest expense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(61)	(90)	(243)	(272)
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Financial services interest expense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(120)	(120)	(360)	25
Swap rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(149)	(149)	(443)	(445)
Swap rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Financial services interest expense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	$ (149)	$ (149)	$ (443)	$ (445)

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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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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This element represents interest incurred for borrowed money which was used to produce goods or render services.

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Amount of interest expense classified as nonoperating.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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