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Summary of Significant Accounting and Reporting Policies - Property, Plant and Equiptment (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
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Property, Plant and Equipment [Line Items] |  |
Electric plant in service and other property | $ 115,172 | $ 112,500
Nuclear fuel | 1,561 | 1,606
Construction work in progress | 14,721 | 14,141
Property, plant and equipment, gross | 131,454 | 128,247
Accumulated depreciation and amortization | (29,519) | (28,899)
Property, plant and equipment – net | 101,935 | 99,348
Florida Power & Light Company |  |
Property, Plant and Equipment [Line Items] |  |
Electric plant in service and other property | 69,119 | 67,771
Nuclear fuel | 1,124 | 1,170
Construction work in progress | 6,543 | 6,326
Property, plant and equipment, gross | 76,786 | 75,267
Accumulated depreciation and amortization | (17,238) | (17,040)
Electric utility plant and other property – net | $ 59,548 | $ 58,227

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