Reportable Segments and Geographic Information - Information By Industry Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 12,010,601	$ 10,528,159	$ 10,665,664
Depreciation and amortization	185,715	232,537	264,863
Capital expenditures	131,050	181,440	213,516
Motorcycles
Segment Reporting Information [Line Items]
Assets	2,492,515	2,548,115	2,562,931
Depreciation and amortization	177,113	223,656	260,707
Capital expenditures	128,798	176,264	197,905
Financial Services
Segment Reporting Information [Line Items]
Assets	9,518,086	7,980,044	8,102,733
Depreciation and amortization	8,602	8,881	4,156
Capital expenditures	$ 2,252	$ 5,176	$ 15,611