Additional Balance Sheet and Cash Flow Information - Inventories, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory [Line Items]
Raw materials and work in process	$ 347,915	$ 211,979
Inventory at lower of FIFO cost or net realizable value	797,062	577,580
Excess of FIFO over LIFO cost	(84,120)	(54,083)
Total inventories, net	712,942	523,497
Obsolescence reserves deducted from FIFO cost	63,000	72,000
Motorcycles
Inventory [Line Items]
Inventory, finished goods, net of inventory valuation adjustment	345,956	281,132
Parts & accessories and general merchandise
Inventory [Line Items]
Inventory, finished goods, net of inventory valuation adjustment	$ 103,191	$ 84,469