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Cover Page
 12 Months Ended
Dec. 31, 2020
shares
Document Information [Line Items]  
Entity Registrant Name Huazhu Group Limited
Entity Central Index Key 0001483994
Document Type 20-F
Amendment Flag false
Document Fiscal Year Focus 2020
Document Fiscal Period Focus FY
Current Fiscal Year End Date --12-31
Trading Symbol HTHT
Document Period End Date Dec. 31, 2020
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Shell Company false
Entity Emerging Growth Company false
Entity Common Stock, Shares Outstanding 321,267,680
Entity Interactive Data Current Yes
Entity File Number 001-34656
Entity Incorporation, State or Country Code E9
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Document Accounting Standard U.S. GAAP
Entity Address, Address Line One No. 699 Wuzhong Road
Entity Address, Country CN
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201103
Title of 12(b) Security American Depositary Shares
Security Exchange Name NASDAQ
ICFR Auditor Attestation Flag false
Business Contact [Member]  
Document Information [Line Items]  
Contact Personnel Name Teo Nee Chuan
Entity Address, Address Line One No. 699 Wuzhong Road
Local Phone Number 21-6195-2011
City Area Code 86
Entity Address, Country CN
Entity Address, City or Town Shanghai
Contact Personnel Email Address TeoNeeChuan@huazhu.com
Entity Address, Postal Zip Code 201103