v3.26.1
Cover Page
 12 Months Ended
Mar. 31, 2026
shares
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Mar. 31, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus FY
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Entity Registrant Name HONDA MOTOR CO., LTD.
Entity Central Index Key 0000715153
Current Fiscal Year End Date --03-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
ICFR Auditor Attestation Flag true
Entity File Number 1-7628
Entity Incorporation, State or Country Code M0
Entity Address, Address Line One No.2-3, Toranomon 2-chome
Entity Address, Address Line Two Minato-ku
Entity Address, City or Town Tokyo
Entity Address, Country JP
Entity Address, Postal Zip Code 105-8404
Document Accounting Standard International Financial Reporting Standards
Auditor Name KPMG AZSA LLC
Auditor Firm ID 1009
Auditor Location Tokyo, Japan
Document Financial Statement Error Correction [Flag] false
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One No.2-3, Toranomon 2-chome
Entity Address, Address Line Two Minato-ku
Entity Address, City or Town Tokyo
Entity Address, Country JP
Entity Address, Postal Zip Code 105-8404
Contact Personnel Name Kenji Ichinoseki
City Area Code +81-3
Local Phone Number 5412-1134
American Depositary Shares [Member]  
Document Information [Line Items]  
Title of 12(b) Security American Depositary Shares
Trading Symbol HMC
Security Exchange Name NYSE
Entity Common Stock, Shares Outstanding 222,860,406
Common Stock [member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock
No Trading Symbol Flag true
Security Exchange Name NONE
Entity Common Stock, Shares Outstanding 3,892,580,441