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v3.25.1

Non-Derivative Fair Value Measurements (Gains and Losses on Available-for-sale Debt Securities) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Debt Securities [Member] |  |  |
Marketable Securities, Available-for-sale [Line Items] |  |  |
Realized Gains | $ 14 | $ 11 |
Realized Losses | 18 | 11 |
Proceeds from sale or maturity of securities | 768 | 564 |
Available for sale securities: Special Use Funds - Debt Securities [Member] |  |  |
Marketable Securities, Available-for-sale [Line Items] |  |  |
Unrealized gains | 36 |  | $ 25
Unrealized losses | 96 |  | 119
Fair value | 1,579 |  | 2,224
Florida Power & Light Company | Debt Securities [Member] |  |  |
Marketable Securities, Available-for-sale [Line Items] |  |  |
Realized Gains | 13 | 10 |
Realized Losses | 13 | 8 |
Proceeds from sale or maturity of securities | 535 | $ 432 |
Florida Power & Light Company | Available for sale securities: Special Use Funds - Debt Securities [Member] |  |  |
Marketable Securities, Available-for-sale [Line Items] |  |  |
Unrealized gains | 21 |  | 16
Unrealized losses | 47 |  | 61
Fair value | $ 885 |  | $ 1,160

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