v3.26.1
Financial risk management - Financial risk factors - Market risk (Details)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Currency risk | USD | RMB        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 5.00% 5.00% 5.00% 5.00%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption ¥ 263,135   ¥ 216,900 ¥ 190,235
Currency risk | USD | USD        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 5.00% 5.00% 5.00% 5.00%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption ¥ 88,448   ¥ 28,467 ¥ 51,151
Currency risk | USD | BRL        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 5.00% 5.00% 5.00% 5.00%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption ¥ 1,265   ¥ 1,520 ¥ 198,284
Currency risk | MXN | USD        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 5.00% 5.00% 5.00% 5.00%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption   $ 217,480 ¥ 66,185 ¥ 71,139
Equity price risk        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 5.00% 5.00% 5.00% 5.00%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption ¥ 274,462   ¥ 180,103 ¥ 144,336
Gains/losses in other comprehensive income net of tax, due to reasonably possible higher or lower in risk assumption ¥ 279,458   ¥ 281,238 ¥ 481,228
Interest rate risk | Floating interest rate        
Financial risk management        
Percentage of reasonably possible strengthened/weakened in risk assumption 0.50% 0.50% 0.50% 0.50%
Increase or decrease in profit before income taxes, due to reasonably possible strengthened/weakened in risk assumption ¥ 6,015   ¥ 13,631 ¥ 1,872
Credit risk | Accumulated impairment        
Financial risk management        
Provision for expected credit loss allowance ¥ (6,037,219)   ¥ (3,692,123) ¥ (2,077,109)