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Summary of Significant Accounting and Reporting Policies - Property, Plant and Equiptment (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Property, Plant and Equipment [Line Items]      
Electric plant in service and other property $ 156,482   $ 151,677
Nuclear fuel 1,866   1,676
Construction work in progress 20,972   21,658
Property, plant and equipment, gross 179,320   175,011
Accumulated depreciation and amortization (37,097)   (36,159)
Property, plant and equipment – net 142,223   138,852
Allowance for Funds Used During Construction, Equity 38 $ 56  
Florida Power & Light Company      
Property, Plant and Equipment [Line Items]      
Electric plant in service and other property 90,089   87,596
Nuclear fuel 1,198   1,140
Construction work in progress 6,215   7,214
Property, plant and equipment, gross 97,502   95,950
Accumulated depreciation and amortization (20,075)   (19,784)
Electric utility plant and other property – net 77,427   $ 76,166
Allowance for Funds Used During Construction 48 65  
Allowance for Funds Used During Construction, Equity 37 53  
NextEra Energy Resources      
Property, Plant and Equipment [Line Items]      
Project Development Costs $ 139 $ 97