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v3.20.2

Summary of Significant Accounting and Reporting Policies (Details) € in Millions, $ in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 11, 2020 solar_generation_facility MW | Jun. 30, 2019 USD ($) solar_generation_facility wind_generation_facility MW | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 EUR (€) | Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($)
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents |  |  | $ 427 |  | $ 427 |  |  |  | $ 508
Restricted cash related to margin cash collateral that is netted against derivative instruments |  |  | 202 |  | 202 |  |  |  | 139
restricted cash related to margin cash collateral that is netted against derivative liabilities |  |  | 75 |  | 75 |  |  |  | 66
Gain in connection with sale |  |  | 17 | $ 354 | 290 | $ 380 |  |  |
Retained earnings |  |  | 25,511 |  | 25,511 |  |  |  | 25,199
FPL [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents |  |  | 101 |  | 101 |  |  |  | 118
Retained earnings |  |  | 10,564 |  | 10,564 |  |  |  | 9,174
Measurement of Credit Losses on Financial Instruments [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  | $ 11 |
Other Current Assets [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted cash and cash equivalents, current |  |  | 306 |  | 306 |  |  |  | 411
Other Current Assets [Member] | FPL [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Restricted cash and cash equivalents, current |  |  | 56 |  | 56 |  |  |  | 54
Two solar generation facilities located in Spain [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Gain in connection with sale |  |  |  |  | 270 |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Current |  |  |  |  |  |  |  |  | 440
Disposal Group, Including Discontinued Operation, Other Liabilities, Current |  |  |  |  |  |  |  |  | 647
Two solar generation facilities located in Spain [Member] | Disposed of by Sale [Member] | NextEra Energy Resources [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of generation facilities purchased | solar_generation_facility | 2 |  |  |  |  |  |  |  |
Generating capacity (MW) | MW | 99.8 |  |  |  |  |  |  |  |
Purchase price |  |  | $ 121 |  | $ 121 |  | € 111 |  |
Wind plants [Member] | Disposed of by Sale [Member] | NextEra Energy Resources [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of generation facilities purchased | wind_generation_facility |  | 3 |  |  |  |  |  |  |
Solar plants [Member] | Disposed of by Sale [Member] | NextEra Energy Resources [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of generation facilities purchased | solar_generation_facility |  | 3 |  |  |  |  |  |  |
Solar plants [Member] | Disposed of by Sale [Member] | Noncontrolling Interest [Member] | NextEra Energy Resources [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of generation facilities purchased | solar_generation_facility |  | 2 |  |  |  |  |  |  |
Three Wind Generation Facilities And Three Solar Generation Facilities [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Gain in connection with sale |  |  |  | 351 |  | 351 |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax |  |  |  | 266 |  | 266 |  |  |
Disposal Group, Including Discontinued Operation, Stockholders' Equity Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | $ 118
Three Wind Generation Facilities And Three Solar Generation Facilities [Member] | Disposed of by Sale [Member] | NextEra Energy Resources [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |
Generating capacity (MW) | MW |  | 611 |  |  |  |  |  |  |
Purchase price |  | $ 1,000 |  | 1,000 |  | 1,000 |  |  |
Disposal Group, Including Discontinued Operation, Working Capital |  | $ 12 |  | $ 12 |  | $ 12 |  |  |

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