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Property, Plant and Equipment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Electric plant in service and other property | $ 105,860 | $ 96,093 |
Nuclear fuel | 1,604 | 1,755 |
Construction work in progress | 10,639 | 9,330 |
Property, Plant and Equipment, Gross | 118,103 | 107,178 |
Accumulated Depreciation And Amortization | 26,300 | 25,168 |
Total property, plant and equipment - net | 91,803 | 82,010 | $ 70,334
FPL[Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, Plant and Equipment, Gross | 63,230 | 59,027 |
Public Utilities, Property, Plant and Equipment Plant in service Gross | 57,749 | 54,523 |
Nuclear fuel | 1,143 | 1,153 |
Construction work in progress | $ 4,338 | $ 3,351 |
Percentage of electric generating assets to gross investment in electric utility plant in service (in hundredths) | 47.00% | 46.00% |
Percentage of electric transmission assets to gross investment in electric utility plant in service (in hundredths) | 12.00% | 12.00% |
Percentage of electric distribution assets to gross investment in electric utility plant in service (in hundredths) | 35.00% | 35.00% |
Percentage of general facilities assets to gross investment in electric utility plant in service (in hundredths) | 6.00% | 7.00% |
Amount of reserve (reversal) amortization recognized | $ (1) | $ (357) | $ (541)
FPL's composite depreciation rate for electric plant in service (in hundredths) | 3.70% | 3.90% | 3.80%
AFUDC capitalization rate for FPL (in hundredths) | 6.22% | 6.22% | 5.97%
AFUDC capitalized for FPL | $ 79 | $ 80 | $ 114
Accumulated depreciation and amortization - FPL | 14,297 | 13,953 |
Net book value | $ 48,933 | 45,074 |
FPL[Member] | Jointly Owned Nuclear Power Plant 1 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 85.00% |  |
Gross Investment | $ 2,260 |  |
Accumulated Depreciation | 999 |  |
Construction Work in Progress | $ 47 |  |
FPL[Member] | Jointly Owned Electricity Generation Plant 1 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 76.00% |  |
Gross Investment | $ 1,300 |  |
Accumulated Depreciation | 502 |  |
Construction Work in Progress | $ 2 |  |
Gulf Power [Member] | Jointly Owned Electricity Generation Plant 4 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 50.00% |  |
Gross Investment | $ 718 |  |
Accumulated Depreciation | 241 |  |
Construction Work in Progress | $ 39 |  |
Gulf Power [Member] | Jointly Owned Electricity Generation Plant 5 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 25.00% |  |
Gross Investment | $ 445 |  |
Accumulated Depreciation | 168 |  |
Construction Work in Progress | 2 |  |
NEER [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Interest capitalized on construction projects of NextEra Energy Resources | 168 | $ 135 | $ 94
Net Book Value Of Assets Serving As Collateral | 11,000 |  |
Total property, plant and equipment - net | $ 1,900 |  |
NEER [Member] | Wind plants [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Percentage of gross depreciable assets by plant type | 55.00% | 54.00% |
NEER [Member] | Wind plants [Member] | Minimum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 30 years |  |
NEER [Member] | Wind plants [Member] | Maximum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 35 years |  |
NEER [Member] | Solar plants [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Percentage of gross depreciable assets by plant type | 13.00% | 12.00% |
NEER [Member] | Solar plants [Member] | Minimum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 25 years |  |
NEER [Member] | Solar plants [Member] | Maximum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 30 years |  |
NEER [Member] | Oil and Gas Properties [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Percentage of gross depreciable assets by plant type | 14.00% | 15.00% |
NEER [Member] | Nuclear Plant [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Percentage of gross depreciable assets by plant type | 8.00% | 10.00% |
NEER [Member] | Nuclear Plant [Member] | Minimum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 23 years |  |
NEER [Member] | Nuclear Plant [Member] | Maximum [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Property, plant and equipment, estimated useful lives (in years) | 47 years |  |
NEER [Member] | Jointly Owned Nuclear Power Plant 3 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 88.23% |  |
Gross Investment | $ 1,290 |  |
Accumulated Depreciation | 412 |  |
Construction Work in Progress | $ 53 |  |
NEER [Member] | Jointly Owned Electricity Generation Plant 2 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 91.19% |  |
Gross Investment | $ 30 |  |
Accumulated Depreciation | 9 |  |
Construction Work in Progress | $ 1 |  |
NEER [Member] | Jointly Owned Electricity Generation Plant 3 [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 65.00% |  |
Gross Investment | $ 138 |  |
Accumulated Depreciation | 13 |  |
Construction Work in Progress | $ 0 |  |
NEER [Member] | Jointly Owned Electricity Transmission and Distribution System [Member] |  |  |
Jointly Owned Utility Plant Interests [Line Items] |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 88.23% |  |
Gross Investment | $ 114 |  |
Accumulated Depreciation | 9 |  |
Construction Work in Progress | $ 11 |  |

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