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Number Of Generation Facilities Sold

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Where offsetting positions exist, restricted cash related to margin cash collateral that is netted against derivative instruments

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Line items represent financial 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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Summary of Significant Accounting and Reporting Policies (Details) $ in Millions	4 Months Ended
	Jun. 30, 2019 USD ($) solar_generation_facility wind_generation_facility MW	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Subsidiary, Sale of Stock [Line Items]
Restricted Cash and Cash Equivalents		$ 369	$ 4,615
Restricted cash related to margin cash collateral that is netted against derivative instruments		57	184
FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Restricted Cash and Cash Equivalents		122	142
Other Current Assets [Member]
Subsidiary, Sale of Stock [Line Items]
Restricted cash and cash equivalents, current		307	89
Other Current Assets [Member] \| FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Restricted cash and cash equivalents, current		$ 61	$ 81
Scenario, Forecast [Member] \| Assets Held for Sale [Member] \| NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Generating capacity (MW) \| MW	611
Purchase price	$ 1,020
Wind plants [Member] \| Scenario, Forecast [Member] \| Assets Held for Sale [Member] \| NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Number of generation facilities purchased \| wind_generation_facility	3
Solar plants [Member] \| Scenario, Forecast [Member] \| Assets Held for Sale [Member] \| NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Number of generation facilities purchased \| solar_generation_facility	3