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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]      
Property, plant and equipment – net $ 125,776 $ 111,059 $ 99,348
FPL [Member]      
Property, Plant and Equipment [Line Items]      
Amount of reserve (reversal) amortization recognized 227 114 429
AFUDC capitalized $ 190 $ 136 $ 176
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% 44.00%  
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% 35.00%  
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) 3.40% 3.60% 3.80%
AFUDC equity component $ 155 $ 105 $ 132
FPL [Member] | St. Lucie Unit No. 2      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 85.00%    
Gross Investment $ 2,312    
Accumulated Depreciation 1,041    
Construction Work in Progress $ 149    
FPL [Member] | Daniel Units Nos. 1 and 2      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 50.00%    
Gross Investment $ 778    
Accumulated Depreciation 305    
Construction Work in Progress $ 0    
FPL [Member] | Scherer Unit No. 3      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 25.00%    
Gross Investment $ 408    
Accumulated Depreciation 185    
Construction Work in Progress 1    
NEER [Member]      
Property, Plant and Equipment [Line Items]      
Net Book Value Of Assets Serving As Collateral 27,800    
Interest capitalized on construction projects of NEER $ 310 $ 172 $ 139
NEER [Member] | Wind plants [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of gross depreciable assets by plant type 47.00% 51.00%  
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 18.00% 14.00%  
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% 7.00%  
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 6.00% 7.00%  
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 16.00% 15.00%  
NEER [Member] | Seabrook      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 88.23%    
Gross Investment $ 1,399    
Accumulated Depreciation 514    
Construction Work in Progress $ 73    
NEER [Member] | Wyman Station Unit No. 4      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 91.19%    
Gross Investment $ 31    
Accumulated Depreciation 14    
Construction Work in Progress $ 2    
NEER [Member] | Stanton      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 65.00%    
Gross Investment $ 140    
Accumulated Depreciation 31    
Construction Work in Progress $ 1    
NEER [Member] | Transmission substation assets located in Seabrook, New Hampshire      
Property, Plant and Equipment [Line Items]      
Jointly Owned Utility Plant, Proportionate Ownership Share 88.23%    
Gross Investment $ 167    
Accumulated Depreciation 8    
Construction Work in Progress $ 0