Borrowings - Summary of detailed information about long term borrowings (Details) - RMB - CNY (¥) ¥ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||
| Long-term bank borrowings amount | ¥ 7,166 | ¥ 0 |
| LPR [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Long-term bank borrowings amount | 7,121 | |
| Floating interest rate [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Long-term bank borrowings amount | ¥ 45 | |
| Long-term borrowings [member] | Floating interest rate [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Interest rate (per annum) | 3.10% | |
| Long-term borrowings [member] | Minimum [Member] | LPR [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Interest rate (per annum) | 0.30% | |
| Long-term borrowings [member] | Maximum [Member] | LPR [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Interest rate (per annum) | 0.85% |