XML 66 R46.htm IDEA: XBRL DOCUMENT v3.25.2
Non-Derivative Fair Value Measurements (Gains and Losses on Available-for-sale Debt Securities) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Debt Securities [Member]          
Marketable Securities, Available-for-sale [Line Items]          
Realized Gains $ 17 $ 8 $ 31 $ 19  
Realized Losses 22 16 40 28  
Proceeds from sale or maturity of securities 921 666 1,690 1,215  
Available for sale securities: Special Use Funds - Debt Securities [Member]          
Marketable Securities, Available-for-sale [Line Items]          
Unrealized gains 51   51   $ 25
Unrealized losses 82   82   119
Fair value 1,274   1,274   2,224
Florida Power & Light Company | Debt Securities [Member]          
Marketable Securities, Available-for-sale [Line Items]          
Realized Gains 15 6 27 17  
Realized Losses 18 10 31 18  
Proceeds from sale or maturity of securities 706 $ 521 1,241 $ 939  
Florida Power & Light Company | Available for sale securities: Special Use Funds - Debt Securities [Member]          
Marketable Securities, Available-for-sale [Line Items]          
Unrealized gains 31   31   16
Unrealized losses 41   41   61
Fair value $ 673   $ 673   $ 1,160