v3.25.4
Property, plant and equipment (Details 4)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Infrastructure | Minimum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 2.50% 2.50%
Infrastructure | Maximum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 50.00% 50.00%
Changes in leases, after the adoption of IFRS 16 | Infrastructure | Minimum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 2.36% 2.36%
Changes in leases, after the adoption of IFRS 16 | Infrastructure | Maximum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 92.31% 92.31%
Changes in leases, after the adoption of IFRS 16 | Switching and transmission equipment | Minimum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 10.00% 10.00%
Changes in leases, after the adoption of IFRS 16 | Switching and transmission equipment | Maximum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 66.67% 66.67%
Changes in leases, after the adoption of IFRS 16 | Other property, plant and equipment | Minimum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 26.09% 26.09%
Changes in leases, after the adoption of IFRS 16 | Other property, plant and equipment | Maximum    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation rate, property, plant and equipment 37.50% 40.00%