NEP (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule of Investments [Line Items]
Investment in equity method investees	$ 6,862		$ 7,453
Guarantor obligations, current carrying value	656
Debt instrument, fair value disclosure	31
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member]
Schedule of Investments [Line Items]
Fee income	28	$ 24
Due from related parties, current	71		53
Due from related parties, noncurrent	32		33
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member] \| NextEra Energy Partners [Member]
Schedule of Investments [Line Items]
Due to related parties	$ 60		$ 12

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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