v3.26.1
Rates and Other Regulatory Activities (Details)
$ in Millions
 1 Months Ended 6 Months Ended
Jul. 31, 2026
USD ($)
Dekatherm
Jun. 30, 2023
Jun. 30, 2026
USD ($)
Dekatherm
Dec. 31, 2025
USD ($)
Rates and Other Regulatory Activities [Line Items]        
Base rate increase     $ 46.9  
RSAM     25.0  
FCG depr reserve imbalance     $ 6.8  
FCG rate case percent     11.25%  
FCG SAFE revs     $ 16.4  
Number of miles of distribution mains   150 160  
Safety, access, and facility enhancement capital expenditures     $ 205.0  
Safety, access, and facility enhancement additional capital expenditures     50.0  
Total projected capital expenditures     255.0  
Gas utility access and replacement directive related capital expenditures     205.0  
Subsequent Event        
Rates and Other Regulatory Activities [Line Items]        
FCG interim rate relief $ 16.2      
TCJA Impact        
Rates and Other Regulatory Activities [Line Items]        
Regulatory liabilities     82.8 $ 83.4
Delaware natural gas distribution        
Rates and Other Regulatory Activities [Line Items]        
Permanent rates     $ 12.1  
Rate case ROE     11.50%  
Interim rates     $ 2.5  
Annual rate case recovery     6.1  
Maryland natural gas distribution        
Rates and Other Regulatory Activities [Line Items]        
Permanent rates     $ 6.9  
Rate case ROE     11.50%  
Annual rate case recovery     $ 2.6  
Incremental rate case recovery     0.9  
Total rate case recovery     3.5  
Florida City Gas        
Rates and Other Regulatory Activities [Line Items]        
Total base rate increase     23.3  
Base rate increase     14.1  
Base rate increase - liquefied natural gas facility     3.8  
Base rate increase base - SAFE investments transfer to base rates     5.3  
Florida City Gas | Storm Reserve        
Rates and Other Regulatory Activities [Line Items]        
Regulatory liabilities     0.8  
Florida electric distribution        
Rates and Other Regulatory Activities [Line Items]        
Permanent rates     $ 8.6  
Rate case ROE     11.30%  
Annual rate case recovery     $ 1.8  
Proprosed rates     12.6  
Deferred annual rate case recovery     1.0  
Step up rate case recovery     $ 0.7  
Eastern Shore        
Rates and Other Regulatory Activities [Line Items]        
Number of miles of distribution mains     5.5  
Eastern Shore | TCJA Impact        
Rates and Other Regulatory Activities [Line Items]        
Regulatory liabilities     $ 34.2  
FL Mandatory Relocates | Florida City Gas        
Rates and Other Regulatory Activities [Line Items]        
Projected revenue     1.0  
FL Mandatory Relocates | Florida natural gas distribution        
Rates and Other Regulatory Activities [Line Items]        
Projected revenue     0.5  
Storm Protection Plan | Florida electric distribution        
Rates and Other Regulatory Activities [Line Items]        
Cost recovery storm protection plan     $ 20.4  
Newberry Expansion | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     8,000  
East Coast Reinforcement Projects: Boynton Beach | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     15,000  
East Coast Reinforcement Projects: New Smyrna Beach | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     3,400  
Central Florida Reinforcement Projects: Plant City | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     5,000  
Central Florida Reinforcement Projects | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     8,700  
St. Cloud Project Amendment | Peninsula pipeline company        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm     10,000  
Florida Energy Pathway | Subsequent Event        
Rates and Other Regulatory Activities [Line Items]        
Additional firm natural gas transportation deliverability | Dekatherm 250,000      
Estimated project investment cost $ 1,200.0      
Florida Energy Pathway | Subsequent Event | Scenario, Plan        
Rates and Other Regulatory Activities [Line Items]        
Project percentage of ownership by third party 49.00%