v3.26.1
Income Tax - Effective tax rate reconciliation (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Income Tax        
Income before provision for income tax ¥ 11,053,504 $ 1,580,632 ¥ 11,675,546 ¥ 10,688,701
Amount        
PRC statutory income tax rate 2,763,376      
Statutory tax rate difference between foreign jurisdiction and PRC 4,421      
Changes in valuation allowance 8,761      
Effect of cross-border tax laws(1) 381,110      
Effect of preferential tax (1,113,849)      
Nontaxable or nondeductible items 89,533      
Effect of super deduction on R&D expenses (214,243)      
Other adjustments (13,873)      
Total ¥ 1,905,236 $ 272,445 ¥ 2,845,361 ¥ 1,938,600
Tax Jurisdiction of Domicile [Extensible Enumeration] PRC PRC    
Reconciliations of differences between PRC statutory income tax rate and Group's effective income tax rate        
U.S. federal corporate marginal income tax rate (as a percent) 25.00% 25.00% 25.00% 25.00%
Different tax rates of operations in other jurisdictions 0.04% 0.04% 0.27% 0.36%
Value Allowance Movement 0.08% 0.08% 0.03% 0.03%
Effect of cross-border tax laws(1) 3.45% 3.45%    
Effect of preferential tax rate (10.08%) (10.08%) (7.42%) (7.22%)
Non-deductible expenses 0.81% 0.81% 2.80% 0.82%
Effect of super deduction on R&D expenses (1.94%) (1.94%) (1.16%) (1.05%)
True up     0.17% (1.69%)
Withholding tax on the earnings distributed     4.44% 1.89%
Others     0.24% 0.00%
Others (as a percent) (0.12%) (0.12%)    
Effective income tax rate 17.24% 17.24% 24.37% 18.14%