v3.26.1
REGULATORY MATTERS - Ohio (Details)
$ in Thousands
5 Months Ended 6 Months Ended
May 22, 2026
USD ($)
period
Feb. 18, 2026
USD ($)
Nov. 19, 2025
USD ($)
Dec. 18, 2024
USD ($)
Dec. 29, 2023
USD ($)
Apr. 05, 2023
Jun. 10, 2026
USD ($)
Jun. 30, 2026
Jan. 07, 2026
USD ($)
billingCycle
PE | 2024-2026 EmPOWER Program Cycle | Maryland                  
Regulatory Matters [Line Items]                  
Approved amount of annual increase (decrease)         $ 311,000        
Amortization period               5 years  
PUCO | OHIO                  
Regulatory Matters [Line Items]                  
Proposed goal to reduce CO2 pollution (percent)       90.00%          
PUCO | Delivery Capital Recovery Rider | OHIO                  
Regulatory Matters [Line Items]                  
Annual revenue cap for DCR rider   $ 14,000   $ 390,000          
Approved amount of annual increase (decrease)   $ (5,000)              
PUCO | Energy Conservation, Economic Development and Job Retention | OHIO                  
Regulatory Matters [Line Items]                  
Contribution amount       $ 6,390          
PUCO | DMR Revenues | OHIO                  
Regulatory Matters [Line Items]                  
Customer restitution                 $ 275,000
Customer restitution, after tax                 $ 213,000
Number of billing cycles | billingCycle                 3
Customer restitution paid             $ 266,000    
PUCO | The Ohio Companies | OHIO                  
Regulatory Matters [Line Items]                  
Number of consecutive annual test periods | period 3                
PUCO | The Ohio Companies | Energy Efficiency and Peak Demand Reduction Stipulation Settlement | OHIO | Distribution Segment                  
Regulatory Matters [Line Items]                  
Impairment of assets     $ 352,000            
PUCO | The Ohio Companies | Three-Year Rate Plan, Revenue Increases in Year One | OHIO                  
Regulatory Matters [Line Items]                  
Amount of requested increase $ (254,000)                
PUCO | The Ohio Companies | Three-Year Rate Plan, Revenue Increases in Year Two | OHIO                  
Regulatory Matters [Line Items]                  
Amount of requested increase (59,000)                
PUCO | The Ohio Companies | Three-Year Rate Plan, Revenue Increases in Year Three | OHIO                  
Regulatory Matters [Line Items]                  
Amount of requested increase $ (80,000)                
PUCO | CEI | Delivery Capital Recovery Rider | OHIO | Distribution Segment                  
Regulatory Matters [Line Items]                  
Approved ROE     9.63%            
Requested capital structure, debt, percentage 47.00%                
Capital structure, debt     48.80%            
Equity ratio, percentage 53.00%                
Capital structure, equity     51.20%            
Transmission rate, base ROE 10.20%                
PUCO | CEI | Energy Efficiency and Peak Demand Reduction Stipulation Settlement | OHIO | Distribution Segment                  
Regulatory Matters [Line Items]                  
Approved amount of annual increase (decrease)     $ 34,000            
Minimum | PUCO | The Ohio Companies                  
Regulatory Matters [Line Items]                  
Approved period of rate plan           8 years