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Summary of Significant Accounting and Reporting Policies - Property, Plant and Equiptment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Property, Plant and Equipment [Line Items]          
Electric plant in service and other property $ 130,934   $ 130,934   $ 124,963
Nuclear fuel 1,537   1,537   1,684
Construction work in progress 17,407   17,407   15,675
Property, plant and equipment, gross 149,878   149,878   142,322
Accumulated depreciation and amortization (32,138)   (32,138)   (31,263)
Property, plant and equipment – net 117,740   117,740   111,059
Allowance for Funds Used During Construction, Equity 31 $ 30 62 $ 67  
Florida Power & Light Company          
Property, Plant and Equipment [Line Items]          
Electric plant in service and other property 77,951   77,951   74,353
Nuclear fuel 1,114   1,114   1,190
Construction work in progress 6,456   6,456   7,026
Property, plant and equipment, gross 85,521   85,521   82,569
Accumulated depreciation and amortization (18,180)   (18,180)   (17,876)
Electric utility plant and other property – net 67,341   67,341   $ 64,693
Allowance for Funds Used During Construction 35 36 74 81  
Allowance for Funds Used During Construction, Equity 30 28 60 62  
NextEra Energy Resources          
Property, Plant and Equipment [Line Items]          
Project Development Costs $ 74 $ 37 $ 132 $ 73