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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Land use rights (Details) - CNY (¥) ¥ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Accounting policies |  |
Long-lived asset impairment loss | ¥ 78 | ¥ 91
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] | Hotel Operating Cost |
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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