Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) MW
FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 2,655
2018	4,650
2019	4,070
2020	4,620
2021	4,410
Total	20,405
NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	1,630
2018	2,450
2019	1,700
2020	320
2021	310
Total	6,410
New Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	670
2018	675
2019	540
2020	1,105
2021	885
Total	3,875
Allowance for funds used during construction (AFUDC) - remainder of 2017	55
Allowance for funds used during construction (AFUDC) - 2018	88
Allowance for funds used during construction (AFUDC) - 2019	45
Allowance for funds used during construction (AFUDC) - 2020	41
Allowance for funds used during construction (AFUDC) - 2021	35
Existing Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	555
2018	795
2019	670
2020	620
2021	475
Total	3,115
Transmission And Distribution Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	1,100
2018	2,710
2019	2,440
2020	2,465
2021	2,680
Total	11,395
Nuclear Fuel Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	30
2018	190
2019	170
2020	210
2021	120
Total	720
General And Other Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	300
2018	280
2019	250
2020	220
2021	250
Total	1,300
Wind Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	845
2018	1,165
2019	1,390
2020	40
2021	25
Total	$ 3,465
Planned new generation over 5 year period (in megawatts) | MW	3,400
Solar Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 175
2018	65
2019	5
2020	0
2021	0
Total	$ 245
Planned new generation over 5 year period (in megawatts) | MW	145
Nuclear Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 135
2018	250
2019	225
2020	215
2021	245
Total	1,070
Pipelines [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	235
2018	855
2019	40
2020	30
2021	10
Total	1,170
Other Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	240
2018	115
2019	40
2020	35
2021	30
Total	460
Corporate and Other [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	40
2018	60
2019	85
2020	50
2021	40
Total	$ 275