v3.25.4
Commitments and Contingencies (Insurance) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Insurance [Abstract]  
Maximum obtainable amount of private liability insurance available under Price-Anderson Act $ 500
Amount of secondary financial protection liability insurance coverage per incident 15,800
Potential retrospective assessments under secondary financial protection system 1,161
Potential retrospective assessments under secondary financial protection system payable per incident per year 173
Amount of sublimit for non nuclear perils per site under NEIL for property damage decontamination and premature decommissioning risks 1,500
Additional nuclear accident limit 1,250
Potential retrospective assessment, limited insurance coverage per occurrence per site, nuclear insurance mutual companies, property damage decontamination and premature decommissioning risks 175
Seabrook Station Insurance [Member]  
Insurance [Abstract]  
Potential retrospective assessment recoverable from minority interest for nuclear liability secondary financial protection 20
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks 3
Duane Arnold Energy Center Insurance [Member]  
Insurance [Abstract]  
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks 2
St Lucie Unit No 2 Insurance [Member]  
Insurance [Abstract]  
Potential retrospective assessment recoverable from minority interest for nuclear liability secondary financial protection 25
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks 4
FPL  
Insurance [Abstract]  
Potential retrospective assessments under secondary financial protection system 664
Potential retrospective assessments under secondary financial protection system payable per incident per year 99
Potential retrospective assessment, limited insurance coverage per occurrence per site, nuclear insurance mutual companies, property damage decontamination and premature decommissioning risks 110
Duane Arnold Energy Center Insurance [Member]  
Insurance [Abstract]  
Maximum obtainable amount of private liability insurance available under Price-Anderson Act 100
Amount of sublimit for non nuclear perils per site under NEIL for property damage decontamination and premature decommissioning risks $ 50