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INVESTMENTS - Impairments (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Impairments      
Available-for-sale debt investments impairment charges ¥ 906 ¥ 0 ¥ 0
Other income/ (expense)      
Impairments      
Available-for-sale debt investments impairment charges 906 0 0
Equity method investment impairment charges   82 840
Impairment charges of equity securities without readily determinable fair value 40 14 37
Equity securities with readily determinable fair value impairment charges ¥ 0 ¥ 0 ¥ 28