v3.25.4
Derivative Instruments and Hedging Activities (Reconciliation of Changes in the Fair Value) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative Financial Instruments, Net [Member]      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Fair value of net derivatives based on significant unobservable inputs as of December 31 of prior year $ 387 $ 951 $ (854)
Realized and unrealized gains (losses):      
Included in earnings 587 339 2,792
Included in regulatory assets and liabilities (24) 49 23
Purchases 204 161 412
Settlements (357) (998) (1,521)
Issuances (97) (128) (139)
Transfers in (17) 20 (129)
Transfers out (1) (7) 367
Fair value of net derivatives based on significant unobservable inputs as of December 31 682 387 951
Gains (losses) included in earnings attributable to the change in unrealized gains (losses) relating to derivatives held at the reporting date $ 395 $ (25) $ 1,482
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] OPERATING REVENUES OPERATING REVENUES OPERATING REVENUES
FPL | Derivative Financial Instruments, Net [Member]      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Fair value of net derivatives based on significant unobservable inputs as of December 31 of prior year $ 34 $ 24 $ 9
Realized and unrealized gains (losses):      
Included in earnings 0 0 0
Included in regulatory assets and liabilities (24) 49 23
Purchases 0 0 0
Settlements 22 (27) (11)
Issuances 0 0 0
Transfers in 0 (12) 1
Transfers out 0 0 2
Fair value of net derivatives based on significant unobservable inputs as of December 31 32 34 24
Gains (losses) included in earnings attributable to the change in unrealized gains (losses) relating to derivatives held at the reporting date $ 0 $ 0 $ 0
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] OPERATING REVENUES OPERATING REVENUES OPERATING REVENUES
Level 3      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Liabilities, Fair Value Disclosure $ 1,168