LEASES - Operating and finance leases (Details) ¥ in Thousands, $ in Thousands |
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
|---|---|---|---|
| Operating leases: | |||
| Operating lease liabilities - current | ¥ 118,359 | ¥ 145,663 | |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Current | Operating and Finance Lease, Liability, Current | Operating and Finance Lease, Liability, Current |
| Operating lease liabilities - non-current | ¥ 190,330 | ¥ 330,740 | |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Noncurrent |
| Total operating lease liabilities | ¥ 308,689 | ¥ 476,403 | |
| Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Current, Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Current, Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Current, Operating and Finance Lease, Liability, Noncurrent |
| Operating lease right-of-use assets, net | ¥ 257,627 | ¥ 448,555 | |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total right-of use assets, net | Total right-of use assets, net | Total right-of use assets, net |
| Financing leases: | |||
| Financing lease liabilities - current | ¥ 5 | ||
| Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Current | Operating and Finance Lease, Liability, Current | |
| Financing lease liabilities - non-current | ¥ 3,360,268 | ||
| Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Noncurrent | |
| Total financing lease liabilities | ¥ 3,360,273 | ||
| Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Operating and Finance Lease, Liability, Current, Operating and Finance Lease, Liability, Noncurrent | Operating and Finance Lease, Liability, Current, Operating and Finance Lease, Liability, Noncurrent | |
| Financing lease right-of-use assets, net | ¥ 3,360,273 | ||
| Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total right-of use assets, net | Total right-of use assets, net | |
| Total right-of use assets, net | ¥ 3,617,900 | $ 517,353 | ¥ 448,555 |