Commitments and Contingencies (Planned Capital Expenditures) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 MW
Corporate and Other [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	$ 380
2016	1,200
2017	735
2018	455
2019	145
Total	2,915
FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	2,895
2016	3,940
2017	2,810
2018	2,505
2019	2,430
Total	14,580
NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	3,275
2016	960
2017	300
2018	390
2019	390
Total	5,315
New Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	495
2016	970
2017	60
2018	5
2019	0
Total	1,530
Existing Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	630
2016	555
2017	650
2018	565
2019	440
Total	2,840
Transmission And Distribution Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	1,300
2016	1,970
2017	1,760
2018	1,625
2019	1,680
Total	8,335
Nuclear Fuel Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	170
2016	220
2017	125
2018	150
2019	175
Total	840
General And Other Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	300
2016	225
2017	215
2018	160
2019	135
Total	1,035
Wind Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	1,840
2016	75
2017	20
2018	15
2019	10
Total	1,960
Planned new generation over 5 year period (in megawatts)	1,255
Solar Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	1,025
2016	535
2017	0
2018	0
2019	0
Total	1,560
Planned new generation over 5 year period (in megawatts)	670
Nuclear Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	250
2016	295
2017	230
2018	260
2019	280
Total	1,315
Other Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder Current Year	160
2016	55
2017	50
2018	115
2019	100
Total	480
Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Allowance for funds used during construction (AFUDC) - remainder of 2015	69
Allowance for funds used during construction (AFUDC) - 2016	71
Allowance for funds used during construction (AFUDC) - 2017	$ 5