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Shareholders' Equity (Detail)
¥ in Millions, $ in Millions
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Retained Earnings (Accumulated Deficit) [Abstract]      
PRC statutory reserve funds ¥ 1,218 $ 177 ¥ 1,098
Unreserved retained earnings 147,123 21,330 144,062
Total retained earnings ¥ 148,341 $ 21,507 ¥ 145,160