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Reconciliation of Effective Income Tax Provision of Tax Computed By Applying Statutory Income Tax Rate to Pre-Tax Income (Detail)
¥ / shares in Units, $ / shares in Units, ¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2022
CNY (¥)
¥ / shares
Dec. 31, 2022
USD ($)
$ / shares
Dec. 31, 2021
CNY (¥)
¥ / shares
Dec. 31, 2020
CNY (¥)
¥ / shares
Income Tax Disclosure [Abstract]        
Expected taxation at PRC statutory tax rate ¥ 2,541 $ 368 ¥ 2,694 ¥ 5,773
Effect of differing tax rates in different jurisdictions 1,976 286 656 208
Non-taxable income (44) (6) (89) (995)
Non-deductible expenses 534 77 965 3,416
Research and development super-deduction (2,274) (330) (1,645) (1,549)
Effect of PRC preferential tax rates and tax holiday (1,507) (217) (1,557) (2,891)
Effect of tax rate changes on deferred taxes 119 17 109 (0)
Reversal of prior year's income taxes (913) (132) (734) (951)
PRC withholding tax 181 26 615 122
Valuation allowance 1,965 285 2,173 936
Taxation for the year ¥ 2,578 $ 374 ¥ 3,187 ¥ 4,064
Effective tax rate 25.50% 25.50% 29.60% 18.00%
Effect of preferential tax rates inside the PRC on basic earnings per Class A and Class B ordinary share | (per share) ¥ 0.54 $ 0.08 ¥ 0.56 ¥ 1.06