Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($) MW
FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	$ 3,625
2020	5,995
2021	5,945
2022	5,755
2023	5,925
Total	27,245
Gulf Power [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	535
2020	1,050
2021	700
2022	670
2023	720
Total	3,675
NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	3,270
2020	3,770
2021	430
2022	265
2023	190
Total	7,925
New Generation Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	860
2020	1,380
2021	525
2022	945
2023	790
Total	4,500
Existing Generation Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	635
2020	720
2021	1,050
2022	775
2023	810
Total	3,990
Transmission And Distribution Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	1,620
2020	3,160
2021	3,675
2022	3,525
2023	3,840
Total	15,820
Allowance for funds used during construction (AFUDC) - remainder of 2019	10
Allowance for funds used during construction (AFUDC) - 2020	40
Allowance for funds used during construction (AFUDC) - 2021	45
Allowance for funds used during construction (AFUDC) - 2022	35
Allowance for funds used during construction (AFUDC) - 2023	30
Nuclear Fuel Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	110
2020	205
2021	220
2022	165
2023	120
Total	820
General And Other Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	400
2020	530
2021	475
2022	345
2023	365
Total	2,115
Wind Expenditures [Member] \| NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	1,820
2020	2,935
2021	25
2022	20
2023	20
Total	$ 4,820
Planned new generation over 5 year period (in megawatts) \| MW	5,785
Solar Expenditures [Member] \| NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	$ 540
2020	285
2021	175
2022	5
2023	0
Total	$ 1,005
Planned new generation over 5 year period (in megawatts) \| MW	1,105
Nuclear Expenditures [Member] \| NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	$ 130
2020	165
2021	170
2022	175
2023	130
Total	770
Pipelines [Member] \| NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	460
2020	335
2021	15
2022	20
2023	0
Total	830
Other Expenditures [Member] \| NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	320
2020	50
2021	45
2022	45
2023	40
Total	500
Generation Expenditures [Member] \| FPL [Member]
Planned Capital Expenditures [Line Items]
Allowance for funds used during construction (AFUDC) - remainder of 2019	30
Allowance for funds used during construction (AFUDC) - 2020	80
Allowance for funds used during construction (AFUDC) - 2021	70
Allowance for funds used during construction (AFUDC) - 2022	50
Allowance for funds used during construction (AFUDC) - 2023	35
Corporate and Other [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2019	75
2020	140
2021	60
2022	0
2023	0
Total	$ 275

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Planned Capital Expenditures AFUDC Fourth Year

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Estimated planned capital expenditures for the fifth year.

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Estimated planned capital expenditures for the remainder of the current year.

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Estimated planned capital expenditures for the third year.

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Estimated AFUDC related to Generation for the remainder of the second year.

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Planned New Generation To Be Added over 5 Years in Megawatts

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Total estimated planned capital expenditures.

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