Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Total revenue									$ 5,361,789	$ 5,716,875	$ 5,647,224
Costs and expenses:
Motorcycles and Related Products cost of goods sold									3,229,798	3,351,796	3,272,330
Financial Services interest expense									210,438	193,187	180,193
Financial Services provision for credit losses									134,536	106,870	132,444
Selling, administrative and engineering expense									1,199,056	1,258,098	1,180,176
Restructuring expense									32,353	93,401	0
Total costs and expenses									4,806,181	5,003,352	4,765,143
Operating income									555,608	713,523	882,081
Other income (expense), net									16,514	3,039	9,182
Investment income									16,371	951	3,580
Interest expense									31,078	30,884	31,004
Income before provision for income taxes	$ 13,700	$ 117,300	$ 256,100	$ 170,400	$ (4,100)	$ 141,200	$ 319,400	$ 230,200	557,415	686,629	863,839
Provision for income taxes									133,780	155,178	342,080
Net income	$ 13,500	$ 86,600	$ 195,600	$ 127,900	$ 500	$ 113,900	$ 242,300	$ 174,800	$ 423,635	$ 531,451	$ 521,759
Earnings per share:
Basic (in dollars per share)	$ 0.09	$ 0.55	$ 1.23	$ 0.80	$ 0	$ 0.69	$ 1.45	$ 1.04	$ 2.70	$ 3.21	$ 3.03
Diluted (in dollars per share)	$ 0.09	$ 0.55	$ 1.23	$ 0.80	$ 0	$ 0.68	$ 1.45	$ 1.03	2.68	3.19	3.02
Cash dividends per common share (in dollars per share)									$ 1.50	$ 1.48	$ 1.46
Motorcycles and Related Products
Revenue:
Motorcycles and Related Products	$ 874,100	$ 1,068,900	$ 1,434,000	$ 1,195,600	$ 955,600	$ 1,123,900	$ 1,525,100	$ 1,363,900	$ 4,572,678	$ 4,968,646	$ 4,915,027
Costs and expenses:
Operating income	(46,500)	47,000	180,700	108,400	(59,500)	65,700	243,400	172,800
Financial Service
Revenue:
Financial Services	198,200	203,600	198,600	188,700	190,200	191,700	188,100	178,200	$ 789,111	$ 748,229	$ 732,197
Costs and expenses:
Operating income	$ 58,900	$ 72,900	$ 75,500	$ 58,700	$ 63,300	$ 83,800	$ 80,500	$ 63,600