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Summary of Significant Accounting and Reporting Policies (Additional Information) (Details)
€ in Millions, account in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Oct. 29, 2021
USD ($)
facility
MW
Dec. 31, 2021
USD ($)
facility
account
county
MW
Dec. 31, 2020
USD ($)
facility
MW
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
facility
county
account
unit
MW
Dec. 31, 2020
USD ($)
facility
solar_generation_facility
MW
Dec. 31, 2019
USD ($)
solar_generation_facility
wind_generation_facility
MW
Dec. 31, 2020
EUR (€)
facility
Jan. 01, 2020
USD ($)
Basis of Presentation [Abstract]                  
Number of customer accounts (more than) | account   5.7     5.7        
Number of counties In which entity operates | county   8     8        
Regulated and Unregulated Operating Revenue [Abstract]                  
Revenue from contracts with customers         $ 18,800 $ 17,000 $ 17,500    
Electric Plant, Depreciation and Amortization [Abstract]                  
Convertible ITCs         755 791      
Construction Activity [Abstract]                  
Impairment charges             72    
Impairment of long-lived assets, after tax             54    
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
Asset Retirement Obligation   $ 3,179 $ 3,166   3,179 3,166 3,506    
Restricted Cash [Abstract]                  
Restricted cash, current   677 441   677 441      
Restricted cash related to margin cash collateral that is netted against derivative assets   121 183   121 183      
Restricted cash related to margin cash collateral that is netted against derivative liabilities   172 136   172 136      
Measurement of Credit Losses on Financial Instruments [Abstract]                  
Retained earnings   25,911 25,363   25,911 25,363      
Accounts Receivable, Credit Loss Expense (Reversal)         146 94 32    
Accounts Receivable, Allowance for Credit Loss, Noncurrent   127     127        
Income Taxes [Abstract]                  
Revenue equivalent of the difference in accumulated deferred income taxes computed under accounting rules, as compared to regulatory accounting rules   3,780 3,949   $ 3,780 3,949      
Amortization period         5 years        
Unrecognized tax benefits that impact annual effective income tax rate   125     $ 125        
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal         77 353 406    
Customer deposits   485 474   485 474      
Construction Costs   1,378 991   $ 1,378 991      
St. Lucie Units Number One                  
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
License renewal period         20 years        
St. Lucie Units Number Two                  
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
License renewal period         20 years        
Accounting Standards Update 2016-13 [Member]                  
Measurement of Credit Losses on Financial Instruments [Abstract]                  
Retained earnings                 $ 11
FPL [Member]                  
Regulated and Unregulated Operating Revenue [Abstract]                  
Revenue from contracts with customers         $ 14,100 13,000 13,600    
Electric Plant, Depreciation and Amortization [Abstract]                  
Convertible ITCs         $ 116 $ 122      
Construction Activity [Abstract]                  
Threshold of plant in service balance at which AFUDC may be recorded (in hundredths)         0.40% 0.50%      
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 | unit         4        
FPL's portion of the ultimate costs of nuclear decommissioning   10,200     $ 10,200        
FPL's Ultimate costs of nuclear decommissioning, in current year dollars   2,400     2,400        
FPL's fund earnings on decommissioning funds         173 $ 132 125    
Plant Dismantlement Approved Expense         26        
Ultimate Costs Of Plant Dismantlement   2,500     2,500        
Ultimate Costs Of Plant Dismantlement In Current Year Dollars   1,200     1,200        
Asset Retirement Obligation   2,107 1,936   2,107 1,936 $ 2,410    
Restricted Cash [Abstract]                  
Restricted cash, current   53 135   53 135      
Measurement of Credit Losses on Financial Instruments [Abstract]                  
Retained earnings   12,285 9,619 [1]   12,285 9,619 [1]      
Storm Funds Storm Reserves and Storm Cost Recovery Abstract                  
Storm restoration costs   242 347   242 347      
Income Taxes [Abstract]                  
Revenue equivalent of the difference in accumulated deferred income taxes computed under accounting rules, as compared to regulatory accounting rules   3,723 3,890   3,723 3,890      
Accumulated Deferred Investment Tax Credit   1,054 753   1,054 753      
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Customer deposits   478 468 [1]   478 468 [1]      
Construction Costs   601 423 [1]   $ 601 423 [1]      
FPL [Member] | St. Lucie Units Number One                  
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
License renewal period         20 years        
FPL [Member] | St. Lucie Units Number Two                  
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
License renewal period         20 years        
NEER [Member]                  
Construction Activity [Abstract]                  
Project development costs of NextEra Energy Resources   $ 831 571   $ 831 571      
Deemed capital structure of NextEra Energy Resources (in hundredths)   70.00%     70.00%        
Wind Electric Generating Facility Capability | MW             220    
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
Asset Retirement Obligation   $ 1,100 1,200   $ 1,100 1,200      
Ultimate Costs Of Nuclear Decommissioning For Wholly Owned Indirect Subsidiary   9,400     9,400        
Ultimate Costs Of Nuclear Decommissioning In Current Year Dollars For Wholly Owned Indirect Subsidiary   2,100     2,100        
Ultimate costs to dismantle wind and solar facilities         $ 2,000        
Effective period for Seabrook's decommissioning funding plan (in years)         4 years        
Variable Interest Entities [Abstract]                  
Wind Electric Generating Facility Capability | MW             220    
NEER [Member] | Variable Interest Entity, Primary Beneficiary [Member]                  
Construction Activity [Abstract]                  
Wind Electric Generating Facility Capability | MW         11,226        
Variable Interest Entities [Abstract]                  
Wind Electric Generating Facility Capability | MW         11,226        
Solar generating facility capability | MW         1,894        
Battery Storage Facility Capability [Line Items] | MW         220        
Forecast [Member] | FPL [Member]                  
Decommissioning of Nuclear Plants, Dismantlement of Plants and Other Accrued Asset Removal Costs [Abstract]                  
Plant Dismantlement Approved Expense       $ 48          
Current other assets                  
Restricted Cash [Abstract]                  
Restricted cash, current   677 374   $ 677 374      
Current other assets | FPL [Member]                  
Restricted Cash [Abstract]                  
Restricted cash, current   53 93   53 93      
Regulatory Assets, Current | FPL [Member]                  
Storm Funds Storm Reserves and Storm Cost Recovery Abstract                  
Storm restoration costs   92 100   92 100      
Regulatory Assets, Noncurrent | FPL [Member]                  
Storm Funds Storm Reserves and Storm Cost Recovery Abstract                  
Storm restoration costs   150 247   150 247      
Franchise and Gross Receipts Taxes [Member]                  
Regulated and Unregulated Operating Revenue [Abstract]                  
Revenue from contracts with customers         852 800 $ 838    
Franchise and Gross Receipts Taxes [Member] | FPL [Member]                  
Regulated and Unregulated Operating Revenue [Abstract]                  
Revenue from contracts with customers         852 800 838    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Two solar generation facilities located in Spain [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal           270      
Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax           $ 270      
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Two solar generation facilities located in Spain [Member] | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Total generating facility capacity (mw) | MW           99.8      
Disposal Group, Including Discontinued Operation, Consideration     $ 121     $ 121   € 111  
Number Of Generation Facilities Sold | solar_generation_facility           2      
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three Wind Generation Facilities And Three Solar Generation Facilities [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal             341    
Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax             259    
Disposal Group, Including Discontinued Operation, Stockholders' Equity Attributable to Noncontrolling Interest             $ 118    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three Wind Generation Facilities And Three Solar Generation Facilities [Member] | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Total generating facility capacity (mw) | MW             611    
Disposal Group, Including Discontinued Operation, Consideration             $ 1,000    
Disposal Group, Including Discontinued Operation, Working Capital             $ 12    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Solar plants [Member] | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Of Generation Facilities Sold | solar_generation_facility             3    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Solar plants [Member] | Noncontrolling Interest [Member] | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Of Generation Facilities Sold | solar_generation_facility             2    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Wind plants [Member] | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Of Generation Facilities Sold | wind_generation_facility             3    
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind facilities and one solar facility | subsidiary of NextEra Energy Resources [Member] | United States, Midwest and West Regions                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Of Wind Generation Facilities | facility 3                
Number Solar Generation Facilities | facility 1                
Total generating facility capacity (mw) | MW 467                
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind facilities and one solar facility | subsidiary of NextEra Energy Resources [Member] | NEP [Member] | United States, Midwest and West Regions                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold 100.00%                
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Four solar facilities and multiple generation solar facilities | subsidiary of NextEra Energy Resources [Member] | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Solar Generation Facilities | facility 4                
Total generating facility capacity (mw) | MW 122                
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Four solar facilities and multiple generation solar facilities | subsidiary of NextEra Energy Resources [Member] | NEP [Member] | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold 33.30%                
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and one solar facility and four solar facilities and multiple distributed generation solar facilities                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal         94        
Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax         69        
Disposal Group, Including Discontinued Operation, Stockholders' Equity Attributable to Noncontrolling Interest   125     125        
Increase (Decrease) To Additional Paid In Capital, Gross   60     60        
Increase (Decrease) To Additional Paid In Capital, Net   43     $ 43        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and one solar facility and four solar facilities and multiple distributed generation solar facilities | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Including Discontinued Operation, Consideration $ 563                
Disposal Group, Including Discontinued Operation, Working Capital $ 22                
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Seven wind facilities, six solar facilities and storage capacity                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal   53              
Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax   $ 33              
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Seven wind facilities, six solar facilities and storage capacity | subsidiary of NextEra Energy Resources [Member] | Third Party [Member] | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold   50.00%     50.00%        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Seven wind facilities, six solar facilities and storage capacity | subsidiary of NextEra Energy Resources [Member] | NEP [Member] | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold   50.00%     50.00%        
Number Of Wind Generation Facilities | facility   7     7        
Number Solar Generation Facilities | facility   6     6        
Battery Storage Facility Capacity | MW   115              
Total generating facility capacity (mw) | MW   2,520              
Disposal Group, Including Discontinued Operation, Consideration   $ 1,700     $ 1,700        
Customer deposits   668     668        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Seven wind facilities, six solar facilities and storage capacity | subsidiary of NextEra Energy Resources [Member] | NEP And Third Party | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Customer deposits   349     349        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Seven wind facilities, six solar facilities and storage capacity | subsidiary of NextEra Energy Resources [Member] | Differential Memberships | United States, Geographically Diverse Locations                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Customer deposits   319     319        
Disposal of Business and Interest Affiliates, Contingent Payments   117     117        
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and four solar generation facilities | subsidiary of NextEra Energy Resources [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Number Of Wind Generation Facilities | facility     3     3   3  
Number Solar Generation Facilities | facility     4     4   4  
Total generating facility capacity (mw) | MW     900            
Disposal Group, Including Discontinued Operation, Stockholders' Equity Attributable to Noncontrolling Interest     $ 689     $ 689      
Increase (Decrease) To Additional Paid In Capital, Gross     (188)     (188)      
Increase (Decrease) To Additional Paid In Capital, Net     $ (165)     $ (165)      
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and four solar generation facilities | subsidiary of NextEra Energy Resources [Member] | Third Party [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold     50.00%     50.00%   50.00%  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and four solar generation facilities | subsidiary of NextEra Energy Resources [Member] | subsidiary of NextEra Energy Resources [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold     90.00%     90.00%   90.00%  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and four solar generation facilities | subsidiary of NextEra Energy Resources [Member] | NEP [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold     40.00%     40.00%   40.00%  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | One solar generation facility and one battery storage facility                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Solar Generating Capacity | MW     100            
Solar Plus Storage Facility Capacity | MW     30            
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | One solar generation facility and one battery storage facility | subsidiary of NextEra Energy Resources [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Customer deposits     $ 155     $ 155      
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | One solar generation facility and one battery storage facility | subsidiary of NextEra Energy Resources [Member] | Solar-Plus-Storage Facility [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Ownership percentage sold     100.00%     100.00%   100.00%  
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Three wind generation facilities and four solar facilities and one solar facilities and multiple distributed generation solar facilities | NEER [Member]                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Disposal Group, Including Discontinued Operation, Consideration     $ 656     $ 656      
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Accounts Payable | Seven wind facilities, six solar facilities and storage capacity                  
Disposal of a Business/Assets and Sale of Noncontrolling Interest [Abstract]                  
Construction Costs   $ 970     $ 970        
[1] Amounts have been retrospectively adjusted to reflect the merger of FPL and Gulf Power Company, see Note 6 – Merger of FPL and Gulf Power Company.