v3.26.1
Non-Derivative Fair Value Measurements (Fair Value of Instruments Recorded at Other Than Fair Value and Special Use Funds) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special use funds: nuclear decommissioning fund assets $ 11,677 $ 10,953
Available for sale debt securities amortized cost $ 4,277 4,181
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity 8 years  
Other investments weighted average maturity 10 years  
Other assets, current $ 1,395 1,171
Other 11,804 11,104
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 1,534 1,494
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure 460 535
Long Term Debt Including Current Maturities Fair Value And Carrying Value 104,203 93,056
Other assets, current 316 340
Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 1,535 1,495
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure 460 535
Long Term Debt Including Current Maturities Fair Value And Carrying Value 101,870 91,614
Other 144 195
Florida Power & Light Company    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special use funds: nuclear decommissioning fund assets 8,149 7,683
Available for sale debt securities amortized cost $ 1,928 1,881
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity 9 years  
Other assets, current $ 269 255
Other 861 1,126
Florida Power & Light Company | Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 940 959
Long Term Debt Including Current Maturities Fair Value And Carrying Value 30,516 28,682
Florida Power & Light Company | Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 940 960
Long Term Debt Including Current Maturities Fair Value And Carrying Value $ 28,681 $ 27,354