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Cover Page
 12 Months Ended
Dec. 31, 2023
shares
Document and Entity Information  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2023
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-34656
Entity Registrant Name H World Group Limited
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One No. 1299 Fenghua Road
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201803
Entity Address, Country CN
Title of 12(b) Security American Depositary Shares
Trading Symbol HTHT
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 3,159,046,350
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
ICFR Auditor Attestation Flag true
Document Financial Statement Error Correction Flag false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Auditor Name Deloitte Touche Tohmatsu Certified Public Accountants LLP
Auditor Firm ID 1113
Auditor Location Shanghai, China
Entity Central Index Key 0001483994
Document Fiscal Year Focus 2023
Document Fiscal Period Focus FY
Current Fiscal Year End Date --12-31
Amendment Flag false
Business contact  
Document and Entity Information  
Contact Personnel Name Jun Zou
Entity Address, Address Line One No. 1299 Fenghua Road
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201803
Entity Address, Country CN
City Area Code 86
Local Phone Number (21) 6195-2011
Contact Personnel Email Address zoujun002@hworld.com