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NEP (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
NEP (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Schedule of Investments [Line Items]
Guarantor obligations, current carrying value	$ 484		$ 484
Debt instrument, fair value disclosure	44		44
NextEra Energy Partners
Schedule of Investments [Line Items]
Guarantor obligations, current carrying value	2,730		2,730
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member]
Schedule of Investments [Line Items]
Fee income	43	$ 37	84	$ 70
Due from related parties, current	76		76		$ 113
Due from related parties, noncurrent	38		38		40
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member] \| NextEra Energy Partners
Schedule of Investments [Line Items]
Due to related parties	$ 556		$ 556		$ 57