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	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative
Motorcycles and related products cost of goods sold	$ 809,316	$ 750,793	$ 1,603,449	$ 1,521,579
Selling, administrative and engineering expense	296,906	300,557	599,362	556,214
Interest expense	3,622	7,696	7,192	15,382
Financial services interest expense	30,562	93,574	69,859	182,508
Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(7,963)	122,059	(25,423)	159,479
Foreign currency contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(894)	5,749	(3,123)	9,148
Foreign currency contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(894)	5,749	(3,123)	9,148
Commodity contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(75)	0	50	58
Commodity contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(75)	0	50	58
Cross-currency swaps \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(6,884)	116,669	(21,990)	150,989
Cross-currency swaps \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(6,884)	116,669	(21,990)	150,989
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(110)	(211)	(219)	(422)
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:FinancingInterestExpense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(63)	(120)	(126)	(240)
Treasury rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating
Derivative
Gain/(Loss) Reclassified from AOCL into Income	(47)	(91)	(93)	(182)
Swap rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments
Derivative
Gain/(Loss) Reclassified from AOCL into Income	0	(148)	(141)	(294)
Swap rate lock contracts \| Cash Flow Hedging \| Derivative Financial Instruments Designated as Cash Flow Hedging Instruments \| Income Statement Location [Axis]: us-gaap:FinancingInterestExpense
Derivative
Gain/(Loss) Reclassified from AOCL into Income	$ 0	$ (148)	$ (141)	$ (294)

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, 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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