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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - CNY (¥)
¥ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Allowance for doubtful accounts of accounts receivables and other receivables:      
Valuation And Qualifying Accounts      
Balance at Beginning of Year ¥ 128 ¥ 87 ¥ 22
Charge to Costs and Expenses 82 105 65
Charge to Other Accounts     7
Write off (7) (64) (7)
Balance at End of Year 203 128 87
Valuation allowance for deferred tax assets      
Valuation And Qualifying Accounts      
Balance at Beginning of Year 466 369 152
Charge to Costs and Expenses 338 151 249
Charge Taken Against Allowance (41) (37) (32)
Write off (32) (17)  
Balance at End of Year ¥ 731 ¥ 466 ¥ 369