Derivative Instruments (Income Statement Disclosure) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Florida Power & Light Company
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Gains (losses) on commodity contracts, recorded as regulatory assets and or liabilities on the balance sheet due to regulatory treatment	$ (6)	$ 2	$ 46	$ (7)
Not Designated as Hedging Instrument
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(240)	441	153	2,435
Not Designated as Hedging Instrument \| Commodity contracts \| Gains (losses) included in operating revenues [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	636	(318)	434	1,595
Unrealized Gain (Loss) on Derivatives	577	(362)	342	1,794
Not Designated as Hedging Instrument \| Foreign Exchange Contract \| Gains (Losses) Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	24	(6)	(6)	(73)
Unrealized Gain (Loss) on Derivatives	25	(5)	3	66
Not Designated as Hedging Instrument \| Interest rate contracts \| Gains (Losses) Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(899)	766	(274)	915
Unrealized Gain (Loss) on Derivatives	(944)	658	(859)	634
Reclassification out of Accumulated Other Comprehensive Income \| Not Designated as Hedging Instrument \| Foreign Exchange Contract \| Gains (Losses) Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Interest Expense	(1)	(1)	(2)	(2)
Reclassification out of Accumulated Other Comprehensive Income \| Not Designated as Hedging Instrument \| Interest rate contracts \| Gains (Losses) Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Interest Expense	$ 0	$ 0	$ 1	$ 0

Pursuant to regulatory accounting treatment, net gain (loss) recorded by FPL that is included in regulatory assets and or liabilities for the period from the net change in fair value of derivative instrument not designated as hedging instrument.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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- Definition

Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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