Equity Method Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity method investment, financial statement, reported amounts [Abstract]
NextEra Energy Resources' ownership interest, low range (in hundredths)	32.00%
NextEra Energy Resources' ownership interest, high range (in hundredths)	55.00%
Equity method investment, summarized financial information [Abstract]
Operating revenue	$ 17,069	$ 17,997	$ 19,204
Operating income	2,913	5,116	5,353
Net income	(746)	(550)	(381)
Total assets	140,912	127,684	117,691
Total liabilities	95,243	82,755
Investment in equity method investees	6,159	5,728	7,453
Interest and Fee Income, Other Loans	148	120	$ 101
Due from Related Parties, Current	113	68
Due from Related Parties, Noncurrent	40	32
Guarantor Obligations, Current Carrying Value	484
Equity Method Investment, Nonconsolidated Investee, Other
Equity method investment, summarized financial information [Abstract]
Operating revenue	1,469	1,359
Operating income	559	538
Net income	739	516
Total assets	29,537	22,717
Total liabilities	9,501	6,612
Partners'/members' equity	20,036	16,105
NEER [Member]
Equity method investment, summarized financial information [Abstract]
NEE's share of underlying equity in the principal entities	4,352	3,927
Difference between investment carrying amount and underlying equity in net assets	1,133	1,312
Investment in equity method investees	5,485	5,239
NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Difference between investment carrying amount and underlying equity in net assets	$ 2,600	$ 2,800
Difference related to goodwill	75.00%	70.00%
NEP [Member]
Equity method investment, summarized financial information [Abstract]
Due to Related Parties	$ 57	$ 10
Guarantor Obligations, Current Carrying Value	3,778
Guarantees, Fair Value Disclosure	$ 41
Mountain Valley Pipeline [Member]
Equity method investment, summarized financial information [Abstract]
Difference between investment carrying amount and underlying equity in net assets		$ 1,500
Minimum [Member] | NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Amortization period	17 years
Maximum [Member] | NEP OpCo [Member]
Equity method investment, summarized financial information [Abstract]
Amortization period	25 years