Supplemental Consolidating Data - Schedule of Operations (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
Motorcycles and related products	$ 1,049,660		$ 1,355,354		$ 2,133,909	$ 2,836,164
Financial services	257,438		263,539		502,399	512,336
Total revenue	1,307,098		1,618,893		2,636,308	3,348,500
Costs and expenses:
Motorcycles and related products cost of goods sold	750,793		924,012		1,521,579	1,947,693
Financial services interest expense	93,574		93,741		182,508	182,480
Financial services provision for credit losses	49,738		56,030		103,072	117,040
Selling, administrative and engineering expense	300,557		304,008		556,214	597,105
Total costs and expenses	1,194,662		1,377,791		2,363,373	2,844,318
Operating income	112,436		241,102		272,935	504,182
Other income, net	14,477		15,879		30,750	36,443
Investment income	10,950		14,811		19,891	29,215
Interest expense	7,696		7,680		15,382	15,359
Income before income taxes	130,167		264,112		308,194	554,481
Income tax provision	24,422		48,706		71,652	106,842
Net income	105,745	$ 130,797	215,406	$ 232,233	236,542	447,639
Less: (income) loss attributable to noncontrolling interests	1,824		2,863		4,131	5,571
Net income attributable to Harley-Davidson, Inc.	107,569		218,269		240,673	453,210
Reportable Legal Entities | Non-Financial Services Entities
Revenue:
Motorcycles and related products	1,052,206		1,357,953		2,138,719	2,840,712
Financial services	0		0		0	0
Total revenue	1,052,206		1,357,953		2,138,719	2,840,712
Costs and expenses:
Motorcycles and related products cost of goods sold	750,793		924,012		1,521,579	1,947,693
Financial services interest expense	0		0		0	0
Financial services provision for credit losses	0		0		0	0
Selling, administrative and engineering expense	257,361		262,188		475,309	510,661
Total costs and expenses	1,008,154		1,186,200		1,996,888	2,458,354
Operating income	44,052		171,753		141,831	382,358
Other income, net	14,477		15,879		30,750	36,443
Investment income	10,950		14,811		19,891	29,215
Interest expense	7,696		7,680		15,382	15,359
Income before income taxes	61,783		194,763		177,090	432,657
Income tax provision	7,976		32,032		40,744	77,562
Net income	53,807		162,731		136,346	355,095
Less: (income) loss attributable to noncontrolling interests	1,824		2,863		4,131	5,571
Net income attributable to Harley-Davidson, Inc.	55,631		165,594		140,477	360,666
Reportable Legal Entities | Financial Services Entities
Revenue:
Motorcycles and related products	0		0		0	0
Financial services	258,834		264,220		504,551	513,459
Total revenue	258,834		264,220		504,551	513,459
Costs and expenses:
Motorcycles and related products cost of goods sold	0		0		0	0
Financial services interest expense	93,574		93,741		182,508	182,480
Financial services provision for credit losses	49,738		56,030		103,072	117,040
Selling, administrative and engineering expense	46,884		45,004		87,820	92,126
Total costs and expenses	190,196		194,775		373,400	391,646
Operating income	68,638		69,445		131,151	121,813
Other income, net	0		0		0	0
Investment income	0		0		0	0
Interest expense	0		0		0	0
Income before income taxes	68,638		69,445		131,151	121,813
Income tax provision	16,446		16,674		30,908	29,280
Net income	52,192		52,771		100,243	92,533
Less: (income) loss attributable to noncontrolling interests	0		0		0	0
Net income attributable to Harley-Davidson, Inc.	52,192		52,771		100,243	92,533
Consolidating Adjustments
Revenue:
Motorcycles and related products	(2,546)		(2,599)		(4,810)	(4,548)
Financial services	(1,396)		(681)		(2,152)	(1,123)
Total revenue	(3,942)		(3,280)		(6,962)	(5,671)
Costs and expenses:
Motorcycles and related products cost of goods sold	0		0		0	0
Financial services interest expense	0		0		0	0
Financial services provision for credit losses	0		0		0	0
Selling, administrative and engineering expense	(3,688)		(3,184)		(6,915)	(5,682)
Total costs and expenses	(3,688)		(3,184)		(6,915)	(5,682)
Operating income	(254)		(96)		(47)	11
Other income, net	0		0		0	0
Investment income	0		0		0	0
Interest expense	0		0		0	0
Income before income taxes	(254)		(96)		(47)	11
Income tax provision	0		0		0	0
Net income	(254)		(96)		(47)	11
Less: (income) loss attributable to noncontrolling interests	0		0		0	0
Net income attributable to Harley-Davidson, Inc.	$ (254)		$ (96)		$ (47)	$ 11