Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Carrying amount as of the balance sheet date of obligations due all related parties.

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Amount of interest and fee income from loans classified as other.

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NEP (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
NEP (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Investment [Line Items]
Investment in equity method investees	$ 7,202		$ 7,202		$ 6,748
Deconsolidation, revaluation of retained investment, gain (loss), amount, before tax			3,900
Deconsolidation, revaluation of retained investment, gain (loss), amount, after tax			3,000
Guarantor obligations, current carrying value	763		763
Debt instrument, fair value disclosure	35		35
NextEra Energy Partners [Member]
Investment [Line Items]
Investment in equity method investees	4,400		4,400
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member]
Investment [Line Items]
Fee income	24	$ 24	48	$ 48
Due from related parties, current	59		59		45
Due from related parties, noncurrent	57		57		34
Cash Sweep And Credit Support Agreement [Member] \| NEER [Member] \| NextEra Energy Partners [Member]
Investment [Line Items]
Due to related parties	$ 737		$ 737		$ 66