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Cover Page
 12 Months Ended
Dec. 31, 2022
shares
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2022
Document Fiscal Year Focus 2022
Current Fiscal Year End Date --12-31
Document Fiscal Period Focus FY
Entity Registrant Name Trip.com Group Limited
Entity Filer Category Large Accelerated Filer
Entity File Number 001-33853
Entity Well-known Seasoned Issuer Yes
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Voluntary Filers No
Entity Emerging Growth Company false
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Address, Postal Zip Code 200335
Entity Address, Address Line One 968 Jin Zhong Road
Entity Address, Country CN
Entity Address, City or Town Shanghai
Entity Incorporation, State or Country Code E9
Entity Common Stock, Shares Outstanding 646,066,830
Security Exchange Name NASDAQ
Title of 12(b) Security American depositary shares
Trading Symbol TCOM
Entity Central Index Key 0001269238
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers Zhong Tian LLP
Auditor Firm ID 1424
Auditor Location Shanghai, the People’s Republic of China
Business Contact  
Document Information [Line Items]  
Entity Address, Postal Zip Code 200335
Entity Address, Address Line One 968 Jin Zhong Road
Entity Address, Country CN
Entity Address, City or Town Shanghai
Contact Personnel Name Jane Jie Sun
Contact Personnel Fax Number 5251-0000
City Area Code 21
Local Phone Number 3406-4880