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Income Taxes - Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |
Statutory federal income tax rate | 21.00% | 21.00% | 35.00%
Increases (reductions) resulting from: |  |  |
State income taxes - net of federal income tax benefit | 3.40% | 4.20% | 2.90%
Taxes attributable to noncontrolling interests | 2.10% | 2.50% | 0.00%
Tax reform rate change | 0.00% | 0.00% | (41.30%)
PTCs and ITCs - NEER | (7.20%) | (3.00%) | (8.40%)
Amortization of deferred regulatory credit(a) | (6.20%) | (1.80%) | 0.00%
Convertible ITCs - NEER | 0.00% | 0.00% | 0.60%
Other - net | (1.40%) | (1.50%) | (3.00%)
Effective income tax rate (in hundredths) | 11.70% | 21.40% | (14.20%)
FPL[Member] |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Statutory federal income tax rate | 21.00% | 21.00% | 35.00%
Increases (reductions) resulting from: |  |  |
State income taxes - net of federal income tax benefit | 3.50% | 4.50% | 3.50%
Taxes attributable to noncontrolling interests | 0.00% | 0.00% | 0.00%
Tax reform rate change | 0.00% | 0.00% | (0.50%)
PTCs and ITCs - NEER | 0.00% | 0.00% | 0.00%
Amortization of deferred regulatory credit(a) | (8.10%) | (5.00%) | (0.10%)
Convertible ITCs - NEER | 0.00% | 0.00% | 0.00%
Other - net | (0.50%) | (0.60%) | (0.90%)
Effective income tax rate (in hundredths) | 15.90% | 19.90% | 37.00%
Amortization of deferred regulatory credit | $ 83 |  |
Amortization Of Excess Deferred Income Taxes | $ 870 |  |

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- Definition The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by convertible investment tax credits (ITCs) for NextEra Energy Resources that is a deferred income tax benefit recorded in income tax expense in the year that the renewable property is placed in service. + References No definition available. + Details
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