v3.25.4
SIGNIFICANT ACCOUNTING POLICIES - Summary of Average Service Lives and Depreciation and Amortization Rates (Details)
 12 Months Ended
Dec. 31, 2025
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Average service life, intangible assets (in years) 11 years
Annual average rate of amortization, intangible assets 6.00%
Minimum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of amortization, intangible assets 8.00%
Maximum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of amortization, intangible assets 10.00%
Transmission  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Average service life, property, plant and equipment (in years) 57 years
Annual average rate of depreciation and amortization, property, plant and equipment 2.00%
Transmission | Minimum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 1.00%
Transmission | Maximum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 3.00%
Distribution  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Average service life, property, plant and equipment (in years) 48 years
Annual average rate of depreciation and amortization, property, plant and equipment 2.00%
Distribution | Minimum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 1.00%
Distribution | Maximum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 8.00%
Communication  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Average service life, property, plant and equipment (in years) 17 years
Annual average rate of depreciation and amortization, property, plant and equipment 6.00%
Communication | Minimum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 1.00%
Communication | Maximum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 11.00%
Administration and service  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Average service life, property, plant and equipment (in years) 28 years
Annual average rate of depreciation and amortization, property, plant and equipment 5.00%
Administration and service | Minimum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 1.00%
Administration and service | Maximum  
Property Plant And Equipment Estimated Useful Lives [Line Items]  
Annual rate of depreciation and amortization, property, plant and equipment 20.00%