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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]      
Property, plant and equipment – net $ 138,852 $ 125,776 $ 111,059
FPL [Member]      
Property, Plant and Equipment [Line Items]      
Amount of reserve (reversal) amortization recognized 328 227 114
AFUDC capitalized $ 245 $ 190 $ 136
FPL [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of electric generating assets to gross investment in electric utility plant in service (in hundredths) 43.00% 43.00%  
Percentage of electric transmission assets to gross investment in electric utility plant in service (in hundredths) 14.00% 14.00%  
Percentage of electric distribution assets to gross investment in electric utility plant in service (in hundredths) 36.00% 36.00%  
Percentage of general facilities assets to gross investment in electric utility plant in service (in hundredths) 7.00% 7.00%  
FPL's composite depreciation rate for electric plant in service (in hundredths) 3.50% 3.40% 3.60%
AFUDC equity component $ 189 $ 155 $ 105
FPL [Member] | St. Lucie Unit No. 2      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 85.00%    
Gross Investment $ 2,348    
Accumulated Depreciation 1,004    
Construction Work in Progress $ 165    
FPL [Member] | Scherer Unit No. 3      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 25.00%    
Gross Investment $ 413    
Accumulated Depreciation 194    
Construction Work in Progress 1    
NEER [Member]      
Property, Plant and Equipment [Line Items]      
Net Book Value Of Assets Serving As Collateral 30,100    
Interest capitalized on construction projects of NEER $ 439 $ 310 $ 172
NEER [Member] | Wind plants [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 45.00% 47.00%  
NEER [Member] | Wind plants [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 30 years    
NEER [Member] | Wind plants [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 35 years    
NEER [Member] | Solar plants [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 23.00% 18.00%  
NEER [Member] | Solar plants [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 30 years    
NEER [Member] | Solar plants [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 35 years    
NEER [Member] | Nuclear Plant [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 6.00% 6.00%  
NEER [Member] | Nuclear Plant [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 23 years    
NEER [Member] | Nuclear Plant [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 47 years    
NEER [Member] | Rate-Regulated Assets [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 5.00% 6.00%  
NEER [Member] | Rate-Regulated Assets [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 40 years    
NEER [Member] | Rate-Regulated Assets [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, estimated useful lives (in years) 40 years    
NEER [Member] | Oil and Gas Properties [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 15.00% 16.00%  
NEER [Member] | Seabrook      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 88.00%    
Gross Investment $ 1,434    
Accumulated Depreciation 556    
Construction Work in Progress $ 111    
NEER [Member] | Wyman Station Unit No. 4      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 91.00%    
Gross Investment $ 36    
Accumulated Depreciation 15    
Construction Work in Progress $ 0    
NEER [Member] | Stanton      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 65.00%    
Gross Investment $ 143    
Accumulated Depreciation 37    
Construction Work in Progress $ 2    
NEER [Member] | Transmission substation assets located in Seabrook, New Hampshire      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 88.00%    
Gross Investment $ 168    
Accumulated Depreciation 27    
Construction Work in Progress $ 1