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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, 2023
CNY (¥)
¥ / shares
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2022
CNY (¥)
¥ / shares
Dec. 31, 2021
CNY (¥)
¥ / shares
Income Tax Disclosure [Abstract]        
Expected taxation at PRC statutory tax rate ¥ 6,299 $ 887 ¥ 2,541 ¥ 2,694
Effect of differing tax rates in different jurisdictions 410 58 1,976 656
Non-taxable income (456) (64) (44) (89)
Non-deductible expenses 1,928 272 534 965
Research and development super-deduction (3,067) (432) (2,274) (1,645)
Effect of PRC preferential tax rates and tax holiday (1,833) (259) (1,507) (1,557)
Effect of tax rate changes on deferred taxes 111 16 119 109
Reversal of prior year's income taxes (156) (22) (913) (734)
PRC withholding tax 574 81 181 615
Change in valuation allowance (161) (23) 1,965 2,173
Taxation for the year ¥ 3,649 $ 514 ¥ 2,578 ¥ 3,187
Effective tax rate 14.50% 14.50% 25.50% 29.60%
Effect of preferential tax rates inside the PRC on basic earnings per Class A and Class B ordinary share | (per share) ¥ 0.65 $ 0.09 ¥ 0.54 ¥ 0.56