v3.26.1
Derivative Instruments (Reconciliation of Changes in the Fair Value) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Realized and unrealized gains (losses): [Abstract]    
Fair value based on significant unobservable inputs, ending balance $ 923 $ 517
Derivative Financial Instruments, Net [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value based on significant unobservable inputs, beginning balance 682 387
Realized and unrealized gains (losses): [Abstract]    
Included in operating revenues (257) 109
Included in regulatory assets and liabilities (3) 29
Purchases 265 38
Settlements 290 (11)
Issuances (61) (16)
Transfers out 6 (2)
Gains included in operating revenues attributable to the change in unrealized gains (losses) relating to derivatives held at the reporting date 30 86
Transfers in 1 (17)
Florida Power & Light Company    
Realized and unrealized gains (losses): [Abstract]    
Fair value based on significant unobservable inputs, ending balance (20) 58
Florida Power & Light Company | Derivative Financial Instruments, Net [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value based on significant unobservable inputs, beginning balance 32 34
Realized and unrealized gains (losses): [Abstract]    
Included in operating revenues 0 0
Included in regulatory assets and liabilities (3) 29
Purchases 0 0
Settlements (49) (5)
Issuances 0 0
Transfers out 0 0
Gains included in operating revenues attributable to the change in unrealized gains (losses) relating to derivatives held at the reporting date 0 0
Transfers in 0 $ 0
Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Financial and Nonfinancial Liabilities, Fair Value Disclosure $ 1,178