Financial Instruments And Risks - Additional Information (Detail) - CNY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items] | |||
| Transfers into Level 3 of fair value hierarchy, assets | ¥ 1,063 | ||
| Gearing ratio | 85.37% | 68.53% | |
| Bottom of range [member] | Discount rate, measurement input [member] | Unlisted Securities at Fair Value Through Profit or Loss [Member] | |||
| Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items] | |||
| Significant unobservable input, assets | 1.22 | 0.66 | |
| Top of range [member] | Discount rate, measurement input [member] | Unlisted Securities at Fair Value Through Profit or Loss [Member] | |||
| Disclosure Of Macroeconomic Assumptions For Calculating Expected Credit Losses [Line Items] | |||
| Significant unobservable input, assets | 13.25 | 13.99 |