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Debt (Narrative) (Details) - USD ($)
 1 Months Ended
Sep. 01, 2022
Sep. 30, 2022
Sep. 30, 2020
Feb. 29, 2020
Feb. 17, 2023
Feb. 09, 2023
Dec. 31, 2022
Aug. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]                  
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths)             4.58%   0.39%
Line of Credit Facility, Fair Value of Amount Outstanding             $ 0    
Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity, issuance of letters of credit             17,900,000,000    
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding             $ 3,700,000,000    
Line of Credit [Member] | Forecast [Member]                  
Debt Instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity, issuance of letters of credit         $ 20,200,000,000        
FPL [Member]                  
Debt Instrument [Line Items]                  
Weighted-average interest rate of commercial paper and short-tem borrowings (in hundredths)             4.41%   0.27%
FPL [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity, issuance of letters of credit             $ 4,500,000,000    
Line of Credit Facility, Fair Value of Letters Of Credit Outstanding             $ 3,000,000    
FPL [Member] | Line of Credit [Member] | Forecast [Member]                  
Debt Instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity, issuance of letters of credit         $ 4,100,000,000        
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Subsequent Event                  
Debt Instrument [Line Items]                  
Debt Instrument, Face Amount           $ 4,000,000,000      
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Minimum [Member] | Subsequent Event                  
Sale of equity units [Abstract]                  
Interest rate           4.90%      
NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member] | Maximum [Member] | Subsequent Event                  
Sale of equity units [Abstract]                  
Interest rate           5.25%      
NEE Equity Units February 2020 [Member]                  
Sale of equity units [Abstract]                  
Amount of equity units sold       $ 2,500,000,000          
Stated amount of each equity unit (in dollars per share)       $ 50          
Undivided beneficial ownership interest per debenture (in hundredths)       5.00%          
Principal amount of each debenture       $ 1,000          
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares)             0.7132    
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares)             0.5703    
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock       20 days          
Rate of total annual distributions on equity units (in hundredths)             5.279%    
Interest rate             1.84%    
Rate of payments on stock purchase contracts (in hundredths)             3.439%    
NEE Equity Units February 2020 [Member] | Minimum [Member]                  
Sale of equity units [Abstract]                  
The Adjusted Reference Price (in dollars per share)             $ 70.39    
NEE Equity Units February 2020 [Member] | Maximum [Member]                  
Sale of equity units [Abstract]                  
Adjusted Threshold Appreciation Price             $ 87.99    
NEE Equity Units September 2020 [Member]                  
Sale of equity units [Abstract]                  
Amount of equity units sold     $ 2,000,000,000            
Stated amount of each equity unit (in dollars per share)     $ 50            
Undivided beneficial ownership interest per debenture (in hundredths)     5.00%            
Principal amount of each debenture     $ 1,000            
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares)             0.6802    
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares)             0.5442    
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock     20 days            
Rate of total annual distributions on equity units (in hundredths)             6.219%    
Interest rate             0.509%    
Rate of payments on stock purchase contracts (in hundredths)             5.71%    
NEE Equity Units September 2020 [Member] | Minimum [Member]                  
Sale of equity units [Abstract]                  
The Adjusted Reference Price (in dollars per share)             $ 73.79    
NEE Equity Units September 2020 [Member] | Maximum [Member]                  
Sale of equity units [Abstract]                  
Adjusted Threshold Appreciation Price             $ 92.24    
NEE Equity Units September 2022                  
Sale of equity units [Abstract]                  
Amount of equity units sold   $ 2,000,000,000              
Stated amount of each equity unit (in dollars per share)   $ 50              
Undivided beneficial ownership interest per debenture (in hundredths)   5.00%              
Principal amount of each debenture   $ 1,000              
Number of shares (subject to antidilution adjustments) if purchased on final settlement date at less than or equal to low range threshold (in shares)             0.5626    
Number of shares (subject to antidilution adjustments) if purchased on the final settlement date at equal to or greater than high range threshold (in shares)             0.4500    
Trading period (in days) over which the market value is determined by reference to the average closing prices of the common stock   20 days              
Rate of total annual distributions on equity units (in hundredths)             6.926%    
Interest rate             4.60%    
Rate of payments on stock purchase contracts (in hundredths)             2.326%    
NEE Equity Units September 2022 | Minimum [Member]                  
Sale of equity units [Abstract]                  
The Adjusted Reference Price (in dollars per share)             $ 88.88    
NEE Equity Units September 2022 | Maximum [Member]                  
Sale of equity units [Abstract]                  
Adjusted Threshold Appreciation Price             $ 111.10    
Series J Debentures due 2024 | NextEra Energy Capital Holdings, Inc. [Member] | Debentures [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Face Amount               $ 1,500,000,000  
Sale of equity units [Abstract]                  
Interest rate   4.255%              
September 2019 Equity Units                  
Sale of equity units [Abstract]                  
Sale of Stock, Number of Shares Issued in Transaction 21,600,000                
Sale of Stock, Consideration Received on Transaction $ 1,500,000,000