Summary of Significant Accounting and Reporting Policies (Details) (USD $)	12 Months Ended					34 Months Ended	12 Months Ended					48 Months Ended									12 Months Ended
	Dec. 31, 2013 account	Dec. 31, 2012	Dec. 31, 2013 FPL [Member] unit	Dec. 31, 2012 FPL [Member]	Dec. 31, 2011 FPL [Member]	Dec. 31, 2012 FPL [Member]	Dec. 31, 2013 NEER [Member]	Dec. 31, 2012 NEER [Member]	Dec. 31, 2011 NEER [Member]	Dec. 31, 2010 NEER [Member]	Dec. 31, 2013 NEER [Member] Variable Interest Entities Wind Primary Beneficiary [Member] MW	Dec. 31, 2016 Forecast [Member] FPL [Member] kWh	Dec. 31, 2013 Wind plants [Member] NEER [Member]	Dec. 31, 2012 Wind plants [Member] NEER [Member]	Dec. 31, 2013 Nuclear Plant [Member] NEER [Member]	Dec. 31, 2012 Nuclear Plant [Member] NEER [Member]	Dec. 31, 2013 natural gas plant [Member] NEER [Member]	Dec. 31, 2012 natural gas plant [Member] NEER [Member]	Dec. 31, 2013 Solar plants [Member] NEER [Member]	Dec. 31, 2012 Solar plants [Member] NEER [Member]	Dec. 31, 2013 Minimum [Member] wind, natural gas and solar plants [Member] NEER [Member]	Dec. 31, 2013 Minimum [Member] Nuclear Plant [Member] NEER [Member]	Dec. 31, 2013 Maximum [Member] wind, natural gas and solar plants [Member] NEER [Member]	Dec. 31, 2013 Maximum [Member] Nuclear Plant [Member] NEER [Member]
Basis of Presentation [Abstract]
Approximate number of customer accounts	4,700,000
Revenues and Rates [Abstract]
FPL unbilled base revenues included in customer receivables			$ 200,000,000	$ 175,000,000		$ 175,000,000
Franchise fees and gross receipts taxes			680,000,000	684,000,000	716,000,000
Surcharges related to storm-recovery			108,000,000	106,000,000	100,000,000
FPSC rate orders [Abstract]
Increase in base rate revenues						75,000,000						350,000,000
Regulatory return on common equity (in hundredths)						10.00%						10.50%
Regulatory return on common equity range (in hundredths)						1.00%						1.00%
Earned regulatory ROE threshold below which retail base rate relief may be sought (in hundredths)						9.00%						9.50%
Maximum surcharge												4
Minimum depreciation reserve surplus that may be amortized under 2012 rate agreement												224,000,000
Maximum amount of fossil dismantlement reserve that may be amortized under the 2012 rate agreement												176,000,000
Maximum amount of surplus depreciation taken in any one calendar year						267,000,000
Maximum amount of surplus depreciation that may be used over the course of the agreement						776,000,000
Earned regulatory ROE threshold above which retail base rate reduction may be sought (in hundredths)						11.00%						11.50%
Threshold of storm restoration costs in any given calendar year at which surcharge may be increased												800,000,000
Increment of usage on which surcharge is based (in kilowatt-hours)												1,000
Electric Plant, Depreciation and Amortization [Abstract]
Percentage of electric generating assets to gross investment in electric utility plant in service (in hundredths)			51.00%
Percentage of electric transmission assets to gross investment in electric utility plant in service (in hundredths)			11.00%
Percentage of electric distribution assets to gross investment in electric utility plant in service (in hundredths)			33.00%
Percentage of general facilities assets to gross investment in electric utility plant in service (in hundredths)			5.00%
Net book value of assets serving as collateral							10,200,000,000
Convertible ITCs	1,500,000,000	1,400,000,000	165,000,000	171,000,000
Convertible ITCs included in other receivables	182,000,000	170,000,000
Maximum interval between depreciation studies performed and filed with the FPSC (in years)			4
Amount of reserve amortization recognized			155,000,000	480,000,000	187,000,000
FPL's composite depreciation rate for electric plant in service (in hundredths)			3.40%	3.30%	3.20%
Portion of electric utility plant in service and other property retired and dismantled				309,000,000		309,000,000
Portion of accumulated depreciation and amortization retired and dismantled				258,000,000		258,000,000
Percentage of gross depreciable assets by plant type													62.00%	67.00%	13.00%	14.00%	9.00%	10.00%	6.00%	1.00%
Property, plant and equipment, estimated useful lives (in years)									30 years	25 years											25 years	25 years	30 years	47 years
Reduction in depreciation and amortization due to change in estimate									75,000,000
Increase in net income due to change in estimate									44,000,000
Increase in basic and diluted earnings per share due to change in estimate									$ 0.11
Construction Activity [Abstract]
Threshold of plant in service balance at which AFUDC may be recorded (in hundredths)			0.50%
AFUDC capitalization rate for FPL (in hundredths)			6.52%	6.41%	6.41%
AFUDC capitalized for FPL			81,000,000	74,000,000	50,000,000
Project development costs of NextEra Energy Resources							162,000,000	106,000,000
Interest capitalized on construction projects of NextEra Energy Resources							109,000,000	139,000,000	104,000,000
Deemed capital structure of NextEra Energy Resources (in hundredths)	70.00%						70.00%
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]
Maximum interval between nuclear decommissioning studies submitted to the FPSC for approval (in years)			5 years
For FPL, number of nuclear units			4
FPL's portion of the ultimate costs of nuclear decommissioning			6,200,000,000
FPL's Ultimate costs of nuclear decommissioning, in current year dollars			2,500,000,000
FPL's fund earnings on decommissioning funds			167,000,000	98,000,000	66,000,000
Maximum interval between plant dismantlement studies submitted to the FPSC for approval (in years)			4 years
Plant dismantlement expense approved by the FPSC, effective January 1, 2010			18,000,000
Ultimate Costs Of Plant Dismantlement			751,000,000
Ultimate Costs Of Plant Dismantlement In Current Year Dollars			394,000,000
NextEra Energy Resources' ARO related to nuclear decommissioning							434,000,000	408,000,000
Ultimate Costs Of Nuclear Decommissioning For Wholly Owned Indirect Subsidiary							11,900,000,000
Ultimate Costs Of Nuclear Decommissioning In Current Year Dollars For Wholly Owned Indirect Subsidiary							2,000,000,000
Effective period for Seabrook's decommissioning funding plan (in years)							4 years
Major Maintenance Costs [Abstract]
Accrued liability for nuclear maintenance costs			70,000,000	35,000,000		35,000,000
Nuclear maintenance costs			92,000,000	104,000,000	97,000,000
Capitalized major maintenance costs							92,000,000	148,000,000
Major maintenance costs							93,000,000	100,000,000	77,000,000
Restricted Cash [Abstract]
Restricted cash, current	215,000,000	149,000,000	38,000,000	38,000,000		38,000,000
Restricted cash, noncurrent	2,000,000	251,000,000
Securitized Storm-Recovery Costs, Storm Fund and Storm Reserve [Abstract]
Storm fund included in special use funds			74,000,000	73,000,000		73,000,000
Capacity to absorb storm restoration costs			121,000,000
Income Taxes [Abstract]
Revenue equivalent of the difference in accumulated deferred income taxes computed under accounting rules, as compared to regulatory accounting rules	233,000,000	206,000,000	218,000,000	195,000,000		195,000,000
Deferred income tax benefit associated with convertible ITCs	$ 52,000,000	$ 54,000,000
Wind Electric Generating Facility Capability											3,541