Revenue - Performance Obligations (Details)	12 Months Ended
	Dec. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue recognized over remaining contract term	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue recognized over remaining contract term
HDMC | Licensing
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Sale payment terms	30 days
HDMC | Licensing | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue recognized over remaining contract term	5 years
HDFS | Other | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue recognized over remaining contract term	3 years
Minimum | Motorcycles
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Sale payment terms	30 days
Maximum | Motorcycles
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Sale payment terms	120 days