Financial Assets At Amortized Cost - Disclosure Of Financial Assets At Amortized Cost (Parenthetical) (Detail) - CNY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure Of Detailed Information About Financial assets at amortized costs [Abstract] | |||
| Financial assets at amortized cost past due | ¥ 1,344 | ¥ 1,347 | ¥ 1,400 |
| Carrying amounts of financial assets | 0 | 241 | 259 |
| Impairment loss recognized in the current period | ¥ 247 | ¥ 539 | |
| Impairment gain recognized in the current period | ¥ 18 | ||