Financial Assets at Fair Value - Summary of Financial Assets at Fair Value Through Other Comprehensive Income in Equity Investments in Listed Securities and Unlisted Securities (Details) - CNY (¥) ¥ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Disclosure Of Financial Assets Designated As Measured At Fair Value Through Profit Or Loss [Line Items] | ||
| Equity investments | ¥ 19,147 | ¥ 26,231 |
| Equity investments in listed entities | Fair value in other comprehensive income | ||
| Disclosure Of Financial Assets Designated As Measured At Fair Value Through Profit Or Loss [Line Items] | ||
| Equity investments | 19,131 | 26,217 |
| Equity investments in unlisted entities | Fair value in other comprehensive income | ||
| Disclosure Of Financial Assets Designated As Measured At Fair Value Through Profit Or Loss [Line Items] | ||
| Equity investments | ¥ 16 | ¥ 14 |