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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Disaggregation of Revenue
Total revenue	$ 1,532,058	$ 865,227	$ 2,954,565	$ 2,163,471
Motorcycles and Related Products
Disaggregation of Revenue
Motorcycles revenue	1,331,500	669,274	2,563,607	1,769,062
Motorcycles and Related Products \| Motorcycles
Disaggregation of Revenue
Motorcycles revenue	1,029,709	446,738	2,046,043	1,346,103
Motorcycles and Related Products \| Parts & Accessories
Disaggregation of Revenue
Motorcycles revenue	222,670	168,708	372,529	303,393
Motorcycles and Related Products \| General Merchandise
Disaggregation of Revenue
Motorcycles revenue	55,631	37,805	105,954	86,965
Motorcycles and Related Products \| Licensing
Disaggregation of Revenue
Motorcycles revenue	8,872	4,903	14,384	12,932
Motorcycles and Related Products \| Other
Disaggregation of Revenue
Motorcycles revenue	14,618	11,120	24,697	19,669
Financial Services
Disaggregation of Revenue
Financial Services	200,558	195,953	390,958	394,409
Financial Services \| Interest income
Disaggregation of Revenue
Financial Services	167,728	168,261	327,542	338,262
Financial Services \| Other
Disaggregation of Revenue
Financial Services	$ 32,830	$ 27,692	$ 63,416	$ 56,147