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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Intangible assets (Details)
Dec. 31, 2024
Minimum | Manachised and franchised hotels  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 10 years
Minimum | Purchased software  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 3 years
Minimum | Other intangible assets including trademark, licenses and other rights  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 2 years
Maximum | Manachised and franchised hotels  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 20 years
Maximum | Purchased software  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 10 years
Maximum | Other intangible assets including trademark, licenses and other rights  
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Remaining contract terms 15 years