MATERIAL ACCOUNTING POLICIES - Lease ROU Useful Lives (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Land, buildings and other | Minimum | |
| Disclosure of quantitative information about right-of-use assets [line items] | |
| Useful lives | 3 years |
| Land, buildings and other | Maximum | |
| Disclosure of quantitative information about right-of-use assets [line items] | |
| Useful lives | 33 years |
| Network | Minimum | |
| Disclosure of quantitative information about right-of-use assets [line items] | |
| Useful lives | 3 years |
| Network | Maximum | |
| Disclosure of quantitative information about right-of-use assets [line items] | |
| Useful lives | 30 years |