Equity Method Investments (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2023
Equity method investment, financial statement, reported amounts [Abstract]
NextEra Energy Resources' ownership interest, low range (in hundredths)	32.80%	32.80%
NextEra Energy Resources' ownership interest, high range (in hundredths)	52.60%	52.60%
Equity method investment, summarized financial information [Abstract]
Operating revenue		$ 28,114.0	$ 20,956.0	$ 17,069.0
Operating income		10,237.0	4,081.0	2,913.0
Net income(a)		(1,028.0)	(901.0)	(746.0)
Total assets	$ 177,489.0	177,489.0	158,935.0	140,912.0
Total liabilities	118,465.0	118,465.0	109,499.0
Investment in equity method investees	6,156.0	6,156.0	6,582.0	6,159.0
Guarantor Obligations, Current Carrying Value	480.0	480.0
Other	7,704.0	7,704.0	5,695.0
FPL [Member]
Equity method investment, summarized financial information [Abstract]
Related Party Services		656.0	579.0	691.0
FPL [Member] | Cash Sweep And Credit Support Agreement
Equity method investment, summarized financial information [Abstract]
Interest and Fee Income, Other Loans		59.0	174.0	$ 148.0
Other Receivables	84.0	84.0	94.0
Other	114.0	114.0	101.0
Equity Method Investment, Nonconsolidated Investee, Other
Equity method investment, summarized financial information [Abstract]
Operating revenue		1,565.0	1,705.0
Operating income		291.0	1,423.0
Net income(a)		839.0	1,380.0
Total assets	34,415.0	34,415.0	26,058.0
Total liabilities	10,351.0	10,351.0	9,779.0
Partners'/members' equity	24,064.0	24,064.0	16,279.0
NEER [Member]
Equity method investment, summarized financial information [Abstract]
NEE's share of underlying equity in the principal entities	5,168.0	5,168.0	2,379.0
Difference between investment carrying amount and underlying equity in net assets	(1,205.0)	(1,205.0)	2,589.0
Investment in equity method investees	3,963.0	3,963.0	4,968.0		$ 4,200.0
NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Difference between investment carrying amount and underlying equity in net assets	1,100.0	$ 1,100.0	$ 2,500.0		$ 1,200.0
Difference related to goodwill		46.00%	75.00%
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Income from discontinued operations		$ 450.0
Gain on disposal	375.0
NEP [Member] | FPL [Member] | Cash Sweep And Credit Support Agreement
Equity method investment, summarized financial information [Abstract]
Accounts Payable, Other	1,511.0	1,511.0	$ 298.0
NEP [Member]
Equity method investment, summarized financial information [Abstract]
Guarantor Obligations, Current Carrying Value	2,300.0	2,300.0
Guarantees, Fair Value Disclosure	60.0	60.0
Mountain Valley Pipeline [Member]
Equity method investment, summarized financial information [Abstract]
Difference between investment carrying amount and underlying equity in net assets	$ (2,400.0)	$ (2,400.0)
Minimum [Member] | NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Amortization period		16 years
Maximum [Member] | NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Amortization period		24 years