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Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions | 1 Months Ended | 9 Months Ended | 57 Months Ended
--- | --- | --- | ---
May 31, 2018 facility | Sep. 30, 2018 USD ($) MW | Sep. 30, 2017 USD ($) | Dec. 31, 2022 USD ($) facility
Planned Capital Expenditures [Line Items] |  |  |  |  |
Capital expenditures of public utility |  | $ 3,493 | $ 3,676 | [1] |
Number of natural gas generation facilities | facility | 2 |  |  |  |
FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 1,265 |  |  |
2019 |  | 4,835 |  |  |
2020 |  | 3,790 |  |  |
2021 |  | 4,725 |  |  |
2022 |  | 4,535 |  |  |
Total |  | 19,150 |  |  |
Capital expenditures of public utility |  | 3,493 | $ 3,676 | [2] |
NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 1,475 |  |  |
2019 |  | 3,335 |  |  |
2020 |  | 1,845 |  |  |
2021 |  | 235 |  |  |
2022 |  | 250 |  |  |
Total |  | 7,140 |  |  |
New Generation Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 140 |  |  |
2019 |  | 1,090 |  |  |
2020 |  | 680 |  |  |
2021 |  | 1,130 |  |  |
2022 |  | 985 |  |  |
Total |  | 4,025 |  |  |
Existing Generation Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 340 |  |  |
2019 |  | 960 |  |  |
2020 |  | 475 |  |  |
2021 |  | 560 |  |  |
2022 |  | 490 |  |  |
Total |  | 2,825 |  |  |
Transmission And Distribution Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 570 |  |  |
2019 |  | 2,235 |  |  |
2020 |  | 2,175 |  |  |
2021 |  | 2,550 |  |  |
2022 |  | 2,570 |  |  |
Total |  | 10,100 |  |  |
Nuclear Fuel Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 50 |  |  |
2019 |  | 150 |  |  |
2020 |  | 135 |  |  |
2021 |  | 145 |  |  |
2022 |  | 165 |  |  |
Total |  | 645 |  |  |
General And Other Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 165 |  |  |
2019 |  | 400 |  |  |
2020 |  | 325 |  |  |
2021 |  | 340 |  |  |
2022 |  | 325 |  |  |
Total |  | 1,555 |  |  |
Wind Expenditures [Member] | NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 750 |  |  |
2019 |  | 2,155 |  |  |
2020 |  | 1,455 |  |  |
2021 |  | 20 |  |  |
2022 |  | 15 |  |  |
Total |  | $ 4,395 |  |  |
Planned new generation over 5 year period (in megawatts) | MW |  | 6,100 |  |  |
Solar Expenditures [Member] | NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | $ 170 |  |  |
2019 |  | 260 |  |  |
2020 |  | 170 |  |  |
2021 |  | 0 |  |  |
2022 |  | 0 |  |  |
Total |  | $ 600 |  |  |
Planned new generation over 5 year period (in megawatts) | MW |  | 580 |  |  |
Nuclear Expenditures [Member] | NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | $ 55 |  |  |
2019 |  | 205 |  |  |
2020 |  | 160 |  |  |
2021 |  | 165 |  |  |
2022 |  | 180 |  |  |
Total |  | 765 |  |  |
Pipelines [Member] | NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 340 |  |  |
2019 |  | 660 |  |  |
2020 |  | 20 |  |  |
2021 |  | 10 |  |  |
2022 |  | 20 |  |  |
Total |  | 1,050 |  |  |
Other Expenditures [Member] | NextEra Energy Resources [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 160 |  |  |
2019 |  | 55 |  |  |
2020 |  | 40 |  |  |
2021 |  | 40 |  |  |
2022 |  | 35 |  |  |
Total |  | 330 |  |  |
Generation Expenditures [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Allowance for funds used during construction (AFUDC) - remainder of 2018 |  | 29 |  |  |
Allowance for funds used during construction (AFUDC) - 2019 |  | 57 |  |  |
Allowance for funds used during construction (AFUDC) - 2020 |  | 30 |  |  |
Allowance for funds used during construction (AFUDC) - 2021 |  | 36 |  |  |
Allowance for funds used during construction (AFUDC) - 2022 |  | 38 |  |  |
Corporate and Other [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Remainder of 2018 |  | 10 |  |  |
2019 |  | 20 |  |  |
2020 |  | 30 |  |  |
2021 |  | 15 |  |  |
2022 |  | 0 |  |  |
Total |  | $ 75 |  |  |
Scenario, Forecast [Member] | Natural gas plant [Member] | FPL [Member] |  |  |  |  |
Planned Capital Expenditures [Line Items] |  |  |  |  |
Capital expenditures of public utility |  |  |  |  | $ 800
Number of natural gas generation facilities | facility |  |  |  |  | 2
[1] | Prior period amounts have been retrospectively adjusted as discussed in Note 11 - Restricted Cash.
[2] | Prior period amounts have been retrospectively adjusted as discussed in Note 11 - Restricted Cash.

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- Definition The cash outflow for capital expenditures of a public utility for electric utility plant and equipment. Amount includes the allowance for borrowed funds used in construction and excludes the allowance for equity funds used during construction and excludes expenditures related to nuclear fuel, which has a separate taxonomy. + References No definition available. + Details
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