Restructuring Expenses - Restructuring Plan Reserve Recorded in Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Restructuring Reserve [Roll Forward]
Restructuring (benefit) expense	$ 7,629	$ 14,832	$ 31,682	$ 74,044
Motorcycles and Related Products
Restructuring Reserve [Roll Forward]
Balance, beginning of period	9,828	36,835	28,498	0
Restructuring (benefit) expense	7,629	14,832	31,682	74,044
Utilized - cash	(13,357)	(11,455)	(41,409)	(18,055)
Utilized - non cash	(1,057)	(9,420)	(15,718)	(24,779)
Foreign currency changes	(26)	(142)	(36)	(560)
Balance, end of period	3,017	30,650	3,017	30,650
Motorcycles and Related Products | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	9,684	36,835	25,037	0
Restructuring (benefit) expense	7,568	14,832	32,016	74,044
Utilized - cash	(13,152)	(11,455)	(38,308)	(18,055)
Utilized - non cash	(1,057)	(9,420)	(15,718)	(24,779)
Foreign currency changes	(26)	(142)	(10)	(560)
Balance, end of period	3,017	30,650	3,017	30,650
Motorcycles and Related Products | Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of period	144	0	3,461	0
Restructuring (benefit) expense	61	0	(334)	0
Utilized - cash	(205)	0	(3,101)	0
Utilized - non cash	0	0	0	0
Foreign currency changes	0	0	(26)	0
Balance, end of period	0	0	0	0
Motorcycles and Related Products | Employee Termination Benefits | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	9,661	36,758	24,958	0
Restructuring (benefit) expense	(1)	(649)	16	38,956
Utilized - cash	(6,617)	(5,402)	(21,951)	(7,835)
Utilized - non cash	(2)	0	(2)	0
Foreign currency changes	(26)	(140)	(6)	(554)
Balance, end of period	3,015	30,567	3,015	30,567
Motorcycles and Related Products | Accelerated Depreciation | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0	0
Restructuring (benefit) expense	719	9,420	14,684	24,779
Utilized - cash	0	0	0	0
Utilized - non cash	(719)	(9,420)	(14,684)	(24,779)
Foreign currency changes	0	0	0	0
Balance, end of period	0	0	0	0
Motorcycles and Related Products | Other | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	23	77	79	0
Restructuring (benefit) expense	6,850	6,061	17,316	10,309
Utilized - cash	(6,535)	(6,053)	(16,357)	(10,220)
Utilized - non cash	(336)	0	(1,032)	0
Foreign currency changes	0	(2)	(4)	(6)
Balance, end of period	$ 2	$ 83	$ 2	$ 83