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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Land use rights (Details) - CNY (¥) ¥ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Accounting policies |  |
Long-lived asset impairment loss | ¥ 36 | ¥ 78
Impairment Long Lived Asset Held For Use Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag | true |
Minimum | Legacy Huazhu |  |
Accounting policies |  |
Initial lease term | 10 years |
Minimum | Legacy DH |  |
Accounting policies |  |
Initial lease term | 20 years |
Maximum | Legacy Huazhu |  |
Accounting policies |  |
Initial lease term | 20 years |
Maximum | Legacy DH |  |
Accounting policies |  |
Initial lease term | 25 years |

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