Earnings Per Share - Schedule of Reconciliation of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Net income attributable to Harley-Davidson, Inc.	$ 377,366	$ 119,040	$ 618,041	$ 572,249
Weighted Average Number of Shares Outstanding Reconciliation
Basic weighted-average shares outstanding (in shares)	120,614	130,078	122,015	133,187
Effect of dilutive securities – employee stock compensation plan (in shares)	1,062	884	840	798
Diluted weighted-average shares outstanding (in shares)	121,676	130,962	122,855	133,985
Net earnings per share:
Basic (in dollars per share)	$ 3.13	$ 0.92	$ 5.07	$ 4.30
Diluted (in dollars per share)	$ 3.10	$ 0.91	$ 5.03	$ 4.27