v3.26.1
Revenue - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Operating revenues $ 1,455,749 $ 1,358,751 $ 2,605,346 $ 2,391,031
Regulatory cost recovery revenue 5,000 14,000 $ 30,000 27,000
Retail Electric Service        
Disaggregation of Revenue [Line Items]        
Revenue from contract with customer, payment terms     21 days  
Electric and Transmission Service        
Disaggregation of Revenue [Line Items]        
Operating revenues $ 1,451,000 $ 1,345,000 $ 2,575,000 $ 2,364,000