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Variable Interest Entities (VIEs) (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2024
MW
Dec. 31, 2023
USD ($)
variable_interest_entity
mi
MW
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
variable_interest_entity
Dec. 31, 2021
USD ($)
Variable Interest Entity [Line Items]          
TOTAL ASSETS   $ 177,489.0   $ 158,935.0 $ 140,912.0
Carrying amount of liabilities, consolidated variable interest entity   118,465.0   109,499.0  
Investment in equity method investees   6,156.0   6,582.0 $ 6,159.0
Variable Interest Entity, Primary Beneficiary [Member]          
Variable Interest Entity [Line Items]          
TOTAL ASSETS   741.0   744.0  
Carrying amount of liabilities, consolidated variable interest entity   $ 347.0   18.0  
Electricity Transmission Line | mi   280      
Variable Interest Entity, Consolidated, Income Allocation, Percentage   48.00%      
Variable Interest Entity Other [Member]          
Variable Interest Entity [Line Items]          
Investments in special purpose entities   $ 4,962.0   $ 4,016.0  
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member]          
Variable Interest Entity [Line Items]          
Total Number Of Consolidated Variable Interest Entities | variable_interest_entity   8   9  
TOTAL ASSETS   $ 1,796.0   $ 2,084.0  
Carrying amount of liabilities, consolidated variable interest entity   $ 1,085.0   1,174.0  
Solar generating facility capability | MW   765      
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Minimum [Member]          
Variable Interest Entity [Line Items]          
Ownership percentage (in hundredths)   50.00%      
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Maximum [Member]          
Variable Interest Entity [Line Items]          
Ownership percentage (in hundredths)   67.00%      
NextEra Energy Resources Consolidated VIE [Member] | 10% direct ownership in wind and solar facilities          
Variable Interest Entity [Line Items]          
TOTAL ASSETS   $ 1,434.0   1,488.0  
Carrying amount of liabilities, consolidated variable interest entity   $ 79.0   86.0  
Ownership percentage (in hundredths)   10.00%      
Wind electric generating facility capability (in megawatts) | MW   400      
Solar generating facility capability | MW   599      
NEER [Member]          
Variable Interest Entity [Line Items]          
Investment in equity method investees   $ 3,963.0 $ 4,200.0 $ 4,968.0  
NEER [Member] | Variable Interest Entity, Primary Beneficiary [Member]          
Variable Interest Entity [Line Items]          
Wind electric generating facility capability (in megawatts) | MW   13,527      
Solar generating facility capability | MW   4,049      
NEER [Member] | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member]          
Variable Interest Entity [Line Items]          
Total Number Of Consolidated Variable Interest Entities | variable_interest_entity   33   31  
TOTAL ASSETS   $ 24,250.0   $ 19,690.0  
Carrying amount of liabilities, consolidated variable interest entity   $ 3,148.0   2,318.0  
Wind electric generating facility capability (in megawatts) | MW   12,824      
Solar generating facility capability | MW   2,438      
Battery storage facility capacity | MW   1,062      
NEER [Member] | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member] | Forecast [Member]          
Variable Interest Entity [Line Items]          
Wind electric generating facility capability (in megawatts) | MW 303        
Solar generating facility capability | MW 1,012        
Battery storage facility capacity | MW 15        
FPL [Member]          
Variable Interest Entity [Line Items]          
TOTAL ASSETS   $ 91,469.0   86,559.0  
Carrying amount of liabilities, consolidated variable interest entity   52,634.0   47,639.0  
FPL [Member] | Variable Interest Entity Other [Member]          
Variable Interest Entity [Line Items]          
Investments in special purpose entities   3,899.0   3,331.0  
Other Investments [Member] | Subsidiaries of NEE [Member]          
Variable Interest Entity [Line Items]          
Investment in equity method investees   3,913.0   $ 5,214.0  
Commitments To Increase (Decrease) In Equity Method Investments   $ 180.0