v3.26.1
Financial risk management - Quantitative information about the significant unobservable inputs used in recurring level 3 fair value measurements except for preferred shares issued by subsidiaries (Details)
¥ in Thousands
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
USD ($)
Dec. 31, 2023
CNY (¥)
Instruments by category      
Fair values ¥ 25,383,755 ¥ 18,943,827 ¥ 16,951,174
Fair values ¥ 11,830,165 11,425,333 14,052,642
Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Bond yield      
Instruments by category      
Significant unobservable inputs 0.03    
Investments in ordinary and preferred shares | Financial assets measured at FVTPL      
Instruments by category      
Fair values ¥ 3,493,969 2,096,140 1,318,573
Treasury investments | Financial assets measured at FVTPL      
Instruments by category      
Fair values 7,594,780 8,039,752 3,250,041
Treasury investments | Financial assets measured at FVOCI      
Instruments by category      
Fair values ¥ 99,357 9,769 8,770
Recurring | Treasury investments | Financial liabilities measured at FVTPL | Minimum | Expected rate of return      
Instruments by category      
Significant unobservable inputs 1.3    
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL      
Instruments by category      
Fair values ¥ 936,279 ¥ 370,666 ¥ 206,497
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Expected volatility      
Instruments by category      
Significant unobservable inputs 0.722    
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Risk-free interest rate      
Instruments by category      
Significant unobservable inputs 0.015    
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Minimum | Expected volatility      
Instruments by category      
Significant unobservable inputs   0.543 0.361
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Minimum | Risk-free interest rate      
Instruments by category      
Significant unobservable inputs   0.017 0.044
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Maximum | Expected volatility      
Instruments by category      
Significant unobservable inputs   0.672 0.463
Recurring | Derivative liabilities and other financial liabilities | Financial liabilities measured at FVTPL | Maximum | Risk-free interest rate      
Instruments by category      
Significant unobservable inputs   0.044 0.057
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL      
Instruments by category      
Fair values ¥ 2,448,517 ¥ 1,949,716 ¥ 1,353,658
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Minimum | Expected volatility      
Instruments by category      
Significant unobservable inputs 31.6 0.278 0.422
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Minimum | Discount for lack of marketability ("DLOM")      
Instruments by category      
Significant unobservable inputs 0.045 0.038 0.048
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Minimum | Risk-free interest rate      
Instruments by category      
Significant unobservable inputs 0.013 0.015 0.021
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Maximum | Expected volatility      
Instruments by category      
Significant unobservable inputs 83.1 0.792 0.649
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Maximum | Discount for lack of marketability ("DLOM")      
Instruments by category      
Significant unobservable inputs 29.1 0.293 0.29
Recurring | Investments in ordinary and preferred shares | Financial assets measured at FVTPL | Maximum | Risk-free interest rate      
Instruments by category      
Significant unobservable inputs 4.1 0.038 0.042
Recurring | Treasury investments | Financial assets measured at FVTPL      
Instruments by category      
Fair values ¥ 6,724,228 ¥ 4,868,032  
Recurring | Treasury investments | Financial assets measured at FVTPL | Minimum | Expected rate of return      
Instruments by category      
Significant unobservable inputs   0.017  
Recurring | Treasury investments | Financial assets measured at FVTPL | Maximum | Expected rate of return      
Instruments by category      
Significant unobservable inputs 2.2 0.041  
Recurring | Loans receivable | Financial assets measured at FVOCI      
Instruments by category      
Fair values ¥ 4,599,599