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Summary of Significant Accounting and Reporting Policies (FPL Base Rate Agreements) (Details) - FPL [Member] |  |  | 8 Months Ended | 12 Months Ended | 36 Months Ended | 40 Months Ended | 48 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2023 USD ($) | Jan. 01, 2022 USD ($) | Aug. 31, 2022 | Dec. 31, 2026 MW | Dec. 31, 2025 MW | Dec. 31, 2029 USD ($) | Dec. 31, 2025 | Dec. 31, 2029 USD ($) | Dec. 31, 2025 USD ($) kWh $ / kW MW
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Increase in base rate revenues | $ 560,000,000 | $ 692,000,000 |  |  |  |  |  |  |
Regulatory return on common equity |  |  | 10.60% |  |  |  |  |  |
Earned regulatory ROE threshold below which retail base rate relief may be sought |  |  | 9.70% |  |  |  |  |  |
Earned regulatory ROE threshold above which retail base rate reduction may be sought |  |  | 11.70% |  |  |  |  |  |
Forecast [Member] |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
SoBRA MW additions capacity | MW |  |  |  | 894 | 894 |  |  |  |
SoBRA base rate revenue installed solar cap cost per unit of power | $ / kW |  |  |  |  |  |  |  |  | 1,250
Contingent ROE, treasury rate, thirty year average threshold |  |  |  |  |  |  |  |  | 2.49%
Contingent ROE, consecutive term |  |  |  |  |  |  |  |  | 6 months
Revised Regulatory Return On Common Equity |  |  |  |  |  |  | 0.1080 |  |
Revised Earned Regulatory ROE Threshold Below Which Retail Base Rate Relief May Be Sought |  |  |  |  |  |  | 0.0980 |  |
Revised Earned Regulatory ROE Threshold Above Which Retail Base Rate Reduction May Be Sought |  |  |  |  |  |  | 0.1180 |  |
The maximum amount by which depreciation expense could be reduced (reserve) |  |  |  |  |  |  |  |  | $ 1,450,000,000
SolarTogether MW additions capacity | MW |  |  |  |  |  |  |  |  | 1,788
SolarTogether MW total capacity | MW |  |  |  |  | 3,278 |  |  |  |
Time period after filing of a cost recovery petition that future storm restoration costs would be recoverable on an interim basis |  |  |  |  |  |  |  |  | 60 days
Maximum storm surcharge |  |  |  |  |  |  |  |  | $ 4
Increment of usage in Kwh on which storm surcharge is based | kWh |  |  |  |  |  |  |  |  | 1,000
Cost of recovery, period |  |  |  |  |  |  |  |  | 12 months
Threshold of storm restoration costs in any given calendar year at which surcharge may be increased |  |  |  |  |  |  |  |  | $ 800,000,000
Forecast [Member] | 2026 Rate Agreement |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |
Rate plan duration |  |  |  |  |  |  |  | 4 years |
Revenue requirement increase |  |  |  |  |  | $ 930,000,000 |  | $ 1,550,000,000 |
ROE midpoint |  |  |  |  |  |  |  | 0.1190 |

X
- Definition Base Rate Proceeding, Rate Plan, Duration + References No definition available. + Details
Name: | nee_BaseRateProceedingRatePlanDuration
Namespace Prefix: | nee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contingent ROE, Consecutive Term + References No definition available. + Details
Name: | nee_ContingentROEConsecutiveTerm
Namespace Prefix: | nee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contingent ROE, Treasury Rate, Thirty Year Average Threshold + References No definition available. + Details
Name: | nee_ContingentROETreasuryRateThirtyYearAverageThreshold
Namespace Prefix: | nee_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Cost Of Recovery, Period + References No definition available. + Details
Name: | nee_CostOfRecoveryPeriod
Namespace Prefix: | nee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Earned Regulatory ROE Threshold Above Which Retail Base Rate Reduction May Be Sought + References No definition available. + Details
Name: | nee_EarnedRegulatoryROEThresholdAboveWhichRetailBaseRateReductionMayBeSought
Namespace Prefix: | nee_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition For FPL, this element represents the threshold of the earned regulatory ROE below which retail base rate relief may be sought. + References No definition available. + Details
Name: | nee_EarnedRegulatoryROEThresholdBelowWhichRetailBaseRateReliefMayBeSought
Namespace Prefix: | nee_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition General Base Revenue Requirement Increase (Decrease) + References No definition available. + Details
Name: | nee_GeneralBaseRevenueRequirementIncreaseDecrease
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For FPL, this amount represents the increase in retail base rate revenues on an annualized basis beginning when the rate agreement became effective. + References No definition available. + Details
Name: | nee_IncreaseInBaseRateRevenues
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increment Of Usage In Kwh On Which Storm Surcharge Is Based + References No definition available. + Details
Name: | nee_IncrementOfUsageInKwhOnWhichStormSurchargeIsBased
Namespace Prefix: | nee_
Data Type: | dtr-types1:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Storm Surcharge + References No definition available. + Details
Name: | nee_MaximumStormSurcharge
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition For FPL, this element represents the regulatory return on common equity. + References No definition available. + Details
Name: | nee_RegulatoryReturnOnCommonEquity
Namespace Prefix: | nee_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Regulatory Return On Common Equity, Midpoint + References No definition available. + Details
Name: | nee_RegulatoryReturnOnCommonEquityMidpoint
Namespace Prefix: | nee_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revised Earned Regulatory ROE Threshold Above Which Retail Base Rate Reduction May Be Sought + References No definition available. + Details
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Namespace Prefix: | nee_
Data Type: | xbrli:pureItemType
Balance Type: | na
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- Definition Revised Earned Regulatory ROE Threshold Below Which Retail Base Rate Relief May Be Sought + References No definition available. + Details
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Namespace Prefix: | nee_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Definition Revised Regulatory Return On Common Equity + References No definition available. + Details
Name: | nee_RevisedRegulatoryReturnOnCommonEquity
Namespace Prefix: | nee_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Definition SoBRA Base Rate Revenue Installed Solar Cap Cost Per Unit of Power + References No definition available. + Details
Name: | nee_SoBRABaseRateRevenueInstalledSolarCapCostPerUnitOfPower
Namespace Prefix: | nee_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition SoBRA MW Additions Capacity + References No definition available. + Details
Name: | nee_SoBRAMWAdditionsCapacity
Namespace Prefix: | nee_
Data Type: | dtr-types1:powerItemType
Balance Type: | na
Period Type: | duration

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- Definition SolarTogether MW Additions Capacity + References No definition available. + Details
Name: | nee_SolarTogetherMWAdditionsCapacity
Namespace Prefix: | nee_
Data Type: | dtr-types1:powerItemType
Balance Type: | na
Period Type: | duration

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- Definition SolarTogether MW Total Capacity + References No definition available. + Details
Name: | nee_SolarTogetherMWTotalCapacity
Namespace Prefix: | nee_
Data Type: | dtr-types1:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Maximum Amount By Which Depreciation Expense Could Be Reduced (Reserve) + References No definition available. + Details
Name: | nee_TheMaximumAmountByWhichDepreciationExpenseCouldBeReducedReserve
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For FPL, this element represents the minimum amount of storm restoration costs in any given calendar year at which FPL may request an increase to the maximum future storm restoration costs surcharge. + References No definition available. + Details
Name: | nee_ThresholdOfStormRestorationCostsInAnyGivenCalendarYearAtWhichSurchargeMayBeIncreased
Namespace Prefix: | nee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Time Period After Filing of a Cost Recovery Petition that Future Storm Restoration Costs Would Be Recoverable on an Interim Basis + References No definition available. + Details
Name: | nee_TimePeriodAfterFilingOfACostRecoveryPetitionThatFutureStormRestorationCostsWouldBeRecoverableOnAnInterimBasis
Namespace Prefix: | nee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Details
Name: | dei_LegalEntityAxis=nee_FloridaPowerLightCompanyMember
Namespace Prefix: |
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- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nee_RateAgreementNameAxis=nee_A2026RateAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |