$NEE
NEXTERA ENERGY INC Stock $nee

$nee Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000075330820000021 Filed on February 14, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$4.588B	$4.390B	$4.416B
YoY Change	4.51%	9.64%	-8.06%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.041B	$1.145B	$1.183B
YoY Change	-9.08%	-873.65%	3.95%
% of Gross Profit
Operating Expenses	$3.632B	$3.261B	$3.448B
YoY Change	11.38%	-4.43%	-0.26%
Operating Profit	$878.0M	$1.107B	$968.0M
YoY Change	-20.69%	495.16%	-28.3%
Interest Expense	$70.00M	-$896.0M	$26.00M
YoY Change	-107.81%	172.34%	-108.97%
% of Operating Profit	7.97%	-80.94%	2.69%
Other Income/Expense, Net	$89.00M	$75.00M	$98.00M
YoY Change	18.67%	-77.13%	-174.81%
Pretax Income	$1.036B	$272.0M	$1.066B
YoY Change	280.88%	231.71%	-12.62%
Income Tax	$170.0M	-$22.00M	$125.0M
% Of Pretax Income	16.41%	-8.09%	11.73%
Net Earnings	$975.0M	$422.0M	$1.005B
YoY Change	131.04%	-80.44%	18.79%
Net Earnings / Revenue	21.25%	9.61%	22.76%
Basic Earnings Per Share	$0.50	$0.88	$2.12
Diluted Earnings Per Share	$0.50	$0.88	$2.10
COMMON SHARES
Basic Shares Outstanding			473.1M shares
Diluted Shares Outstanding			477.4M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$600.0M	$638.0M	$497.0M
YoY Change	-5.96%	-62.78%	-64.01%
Cash & Equivalents	$600.0M	$638.0M	$497.0M
Short-Term Investments
Other Short-Term Assets	$1.576B	$551.0M	$518.0M
YoY Change	186.03%	-12.82%	-5.99%
Inventory	$1.328B	$1.223B	$1.083B
Prepaid Expenses
Receivables	$2.282B	$2.302B	$2.454B
Other Receivables	$525.0M	$667.0M	$665.0M
Total Short-Term Assets	$7.408B	$6.393B	$8.349B
YoY Change	15.88%	-10.97%	18.81%
LONG-TERM ASSETS
Property, Plant & Equipment	$82.01B	$70.33B	$68.57B
YoY Change	16.6%	-2.7%	-3.54%
Goodwill	$4.204B	$891.0M
YoY Change	371.83%	16.62%
Intangibles
YoY Change
Long-Term Investments	$7.453B	$6.748B	$6.493B
YoY Change	10.45%	190.74%
Other Assets	$3.314B	$7.521B	$3.548B
YoY Change	-55.94%	51.69%	-5.03%
Total Long-Term Assets	$110.3B	$26.98B	$21.68B
YoY Change	308.83%	45.87%	16.16%
TOTAL ASSETS
Total Short-Term Assets	$7.408B	$6.393B	$8.349B
Total Long-Term Assets	$110.3B	$26.98B	$21.68B
Total Assets	$117.7B	$103.7B	$98.60B
YoY Change	13.49%	5.86%	1.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.631B	$2.386B	$3.000B
YoY Change	52.18%	-26.24%	32.98%
Accrued Expenses	$1.710B	$1.672B	$1.836B
YoY Change	2.27%	1.09%	2.34%
Deferred Revenue	$499.0M
YoY Change
Short-Term Debt	$400.0M	$5.465B	$430.0M
YoY Change	-92.68%	2043.14%	68.63%
Long-Term Debt Due	$2.124B	$2.716B	$2.649B
YoY Change	-21.8%	62.34%	15.93%
Total Short-Term Liabilities	$13.85B	$17.56B	$12.81B
YoY Change	-21.12%	56.21%	10.37%
LONG-TERM LIABILITIES
Long-Term Debt	$37.54B	$26.78B	$27.05B
YoY Change	40.18%	-14.73%	-10.87%
Other Long-Term Liabilities	$1.831B	$1.449B	$1.214B
YoY Change	26.36%	-36.48%	-42.6%
Total Long-Term Liabilities	$61.99B	$21.48B	$21.41B
YoY Change	188.65%	-16.69%	-22.18%
TOTAL LIABILITIES
Total Short-Term Liabilities	$13.85B	$17.56B	$12.81B
Total Long-Term Liabilities	$61.99B	$21.48B	$21.41B
Total Liabilities	$75.84B	$39.04B	$34.22B
YoY Change	94.28%	5.45%	-12.52%
SHAREHOLDERS EQUITY
Retained Earnings	$25.20B	$23.84B	$23.94B
YoY Change	5.71%	25.33%	38.36%
Common Stock	$11.98B	$10.50B	$10.48B
YoY Change	14.1%	15.27%	15.73%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$37.01B	$34.14B	$34.25B
YoY Change
Total Liabilities & Shareholders Equity	$117.7B	$103.7B	$98.60B
YoY Change	13.49%	5.86%	1.88%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$975.0M	$422.0M	$1.005B
YoY Change	131.04%	-80.44%	18.79%
Depreciation, Depletion And Amortization	$1.041B	$1.145B	$1.183B
YoY Change	-9.08%	-873.65%	3.95%
Cash From Operating Activities	$1.912B	$1.362B	$2.295B
YoY Change	40.38%	20.64%	6.05%
INVESTING ACTIVITIES
Capital Expenditures	-$1.107B	-$1.578B	-$1.729B
YoY Change	-29.85%	2.73%	60.39%
Acquisitions
YoY Change
Other Investing Activities	-$2.607B	-$811.0M	-$1.477B
YoY Change	221.45%	52.73%	459.47%
Cash From Investing Activities	-$3.714B	-$2.389B	-$3.206B
YoY Change	55.46%	15.58%	138.9%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.350B	5.565B	882.0M
YoY Change	-75.74%	394.23%	1197.06%
NET CHANGE
Cash From Operating Activities	1.912B	1.362B	2.295B
Cash From Investing Activities	-3.714B	-2.389B	-3.206B
Cash From Financing Activities	1.350B	5.565B	882.0M
Net Change In Cash	-452.0M	4.538B	-29.00M
YoY Change	-109.96%	2313.83%	-103.26%
FREE CASH FLOW
Cash From Operating Activities	$1.912B	$1.362B	$2.295B
Capital Expenditures	-$1.107B	-$1.578B	-$1.729B
Free Cash Flow	$3.019B	$2.940B	$4.024B
YoY Change	2.69%	10.32%	24.12%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19000000	USD
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000753308
CY2017	nee	Aoci Impactsof Nep Deconsolidationtax AOCIImpactsofNEPDeconsolidationtax	0	USD
CY2018	nee	Aoci Impactsof Nep Deconsolidationtax AOCIImpactsofNEPDeconsolidationtax	-15000000	USD
CY2019	nee	Aoci Impactsof Nep Deconsolidationtax AOCIImpactsofNEPDeconsolidationtax	0	USD
CY2018Q1	nee	High Common Stock Sales Price HighCommonStockSalesPrice	164.41
CY2018Q2	nee	High Common Stock Sales Price HighCommonStockSalesPrice	169.53
CY2018Q3	nee	High Common Stock Sales Price HighCommonStockSalesPrice	175.65
CY2018Q4	nee	High Common Stock Sales Price HighCommonStockSalesPrice	184.20
CY2019Q1	nee	High Common Stock Sales Price HighCommonStockSalesPrice	195.55
CY2019Q2	nee	High Common Stock Sales Price HighCommonStockSalesPrice	208.91
CY2019Q3	nee	High Common Stock Sales Price HighCommonStockSalesPrice	233.45
CY2019Q4	nee	High Common Stock Sales Price HighCommonStockSalesPrice	245.01
CY2019Q4	nee	Lessor Sales Type Lease Number Of Facilities LessorSalesTypeLeaseNumberOfFacilities	1	facility
CY2018Q1	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	145.10
CY2018Q2	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	155.06
CY2018Q3	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	163.52
CY2018Q4	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	164.78
CY2019Q1	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	168.66
CY2019Q2	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	187.30
CY2019Q3	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	201.06
CY2019Q4	nee	Low Common Stock Sales Price LowCommonStockSalesPrice	220.66
CY2017	nee	Other Comprehensive Income Loss Related To Equity Method Investee Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeTax	1000000	USD
CY2018	nee	Other Comprehensive Income Loss Related To Equity Method Investee Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeTax	1000000	USD
CY2019	nee	Other Comprehensive Income Loss Related To Equity Method Investee Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeTax	0	USD
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Registrant Name EntityRegistrantName	NEXTERA ENERGY INC
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10000000	USD
CY2019Q4	nee	Current Regulatory Assets Other CurrentRegulatoryAssetsOther	165000000	USD
CY2019	nee	Regulatory Asset Liability Amortization Period RegulatoryAssetLiabilityAmortizationPeriod	P5Y
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	478000000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	489000000	shares
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-29000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	5000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	14000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	25000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-13000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-8000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-8000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-1000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-1000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	94000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-5000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	8000000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	1-8841
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	59-2449419
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	700 Universe Boulevard
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Juno Beach
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	33408
CY2019	dei	City Area Code CityAreaCode	561
CY2019	dei	Local Phone Number LocalPhoneNumber	694-4000
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	FL
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	97905404884	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	488965893	shares
CY2019	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	19204000000	USD
CY2018	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	16727000000	USD
CY2017	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	17173000000	USD
CY2019	nee	Fuel Purchased Power And Interchange Expense FuelPurchasedPowerAndInterchangeExpense	4363000000	USD
CY2018	nee	Fuel Purchased Power And Interchange Expense FuelPurchasedPowerAndInterchangeExpense	3732000000	USD
CY2017	nee	Fuel Purchased Power And Interchange Expense FuelPurchasedPowerAndInterchangeExpense	4071000000	USD
CY2019	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3640000000	USD
CY2018	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3330000000	USD
CY2017	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	3458000000	USD
CY2019	nee	Asset Recovery Damaged Property Costs AssetRecoveryDamagedPropertyCosts	234000000	USD
CY2018	nee	Asset Recovery Damaged Property Costs AssetRecoveryDamagedPropertyCosts	3000000	USD
CY2017	nee	Asset Recovery Damaged Property Costs AssetRecoveryDamagedPropertyCosts	1255000000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	72000000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	11000000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	446000000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	35000000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	32000000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	69000000	USD
CY2019	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	4216000000	USD
CY2018	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	3911000000	USD
CY2017	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	2357000000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	406000000	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	80000000	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	1111000000	USD
CY2019	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1697000000	USD
CY2018	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1508000000	USD
CY2017	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1455000000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	13851000000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	12447000000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	12000000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	5353000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	4280000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	5173000000	USD
CY2019	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	2249000000	USD
CY2018	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1498000000	USD
CY2017	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1558000000	USD
CY2019	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	0	USD
CY2018	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	0	USD
CY2017	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	460000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	66000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	358000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	141000000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	67000000	USD
CY2018	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	96000000	USD
CY2017	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	92000000	USD
CY2019	nee	Interest Income InterestIncome	54000000	USD
CY2018	nee	Interest Income InterestIncome	51000000	USD
CY2017	nee	Interest Income InterestIncome	81000000	USD
CY2019	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2018	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	3927000000	USD
CY2017	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	55000000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	111000000	USD
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	112000000	USD
CY2019	nee	Other Than Temporary Impairment Losses On Securities Held In Nuclear Decommissioning Funds OtherThanTemporaryImpairmentLossesOnSecuritiesHeldInNuclearDecommissioningFunds	238000000	USD
CY2018	nee	Other Than Temporary Impairment Losses On Securities Held In Nuclear Decommissioning Funds OtherThanTemporaryImpairmentLossesOnSecuritiesHeldInNuclearDecommissioningFunds	-189000000	USD
CY2017	nee	Other Than Temporary Impairment Losses On Securities Held In Nuclear Decommissioning Funds OtherThanTemporaryImpairmentLossesOnSecuritiesHeldInNuclearDecommissioningFunds	0	USD
CY2019	us-gaap	Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax	-185000000	USD
CY2018	us-gaap	Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax	-168000000	USD
CY2017	us-gaap	Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax	-151000000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	67000000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	48000000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	11000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1517000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	3072000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-510000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3836000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7352000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4663000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	448000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-660000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3388000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5776000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5323000000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-381000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-862000000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-57000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3769000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	6638000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5380000000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.82
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.03
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.48
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.76
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	13.88
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.39
CY2019	us-gaap	Profit Loss ProfitLoss	3388000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5776000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5323000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-29000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-26000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-32000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	20000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-12000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	127000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	2000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	36000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	46000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	14000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-46000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	22000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-31000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	23000000	USD
CY2019	nee	Other Comprehensive Income Loss Related To Equity Method Investee Net Of Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeNetOfTax	1000000	USD
CY2018	nee	Other Comprehensive Income Loss Related To Equity Method Investee Net Of Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeNetOfTax	4000000	USD
CY2017	nee	Other Comprehensive Income Loss Related To Equity Method Investee Net Of Tax OtherComprehensiveIncomeLossRelatedToEquityMethodInvesteeNetOfTax	2000000	USD
CY2019	nee	Aoci Impactof Nep Deconsolidation AOCIImpactofNEPDeconsolidation	0	USD
CY2018	nee	Aoci Impactof Nep Deconsolidation AOCIImpactofNEPDeconsolidation	58000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	21000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-29000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	192000000	USD
CY2017	nee	Aoci Impactof Nep Deconsolidation AOCIImpactofNEPDeconsolidation	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3409000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	5805000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	5515000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-380000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-862000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-46000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3789000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6667000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5561000000	USD
CY2019Q4	nee	Electric Utility Plant In Service And Other Property ElectricUtilityPlantInServiceAndOtherProperty	96093000000	USD
CY2018Q4	nee	Electric Utility Plant In Service And Other Property ElectricUtilityPlantInServiceAndOtherProperty	81986000000	USD
CY2019Q4	nee	Nuclear Fuel NuclearFuel	1755000000	USD
CY2018Q4	nee	Nuclear Fuel NuclearFuel	1740000000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	9330000000	USD
CY2018Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	8357000000	USD
CY2019Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	25168000000	USD
CY2018Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	21749000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	82010000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	70334000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	600000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	638000000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2282000000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2302000000	USD
CY2019Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	525000000	USD
CY2018Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	667000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	1328000000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	1223000000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	335000000	USD
CY2018Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	448000000	USD
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	762000000	USD
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	564000000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1576000000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	551000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	7408000000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	6393000000	USD
CY2019Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	6954000000	USD
CY2018Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	5886000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	7453000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	6748000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	1437000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	1284000000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3287000000	USD
CY2018Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3290000000	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1624000000	USD
CY2018Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1355000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4204000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	891000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3314000000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7521000000	USD
CY2019Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	28273000000	USD
CY2018Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	26975000000	USD
CY2019Q4	us-gaap	Assets Assets	117691000000	USD
CY2018Q4	us-gaap	Assets Assets	103702000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	5000000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	5000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	11970000000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10490000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	25199000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	23837000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-169000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-188000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	37005000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	34144000000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	4355000000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	3269000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	41360000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	37413000000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	487000000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	468000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	37543000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26782000000	USD
CY2019Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	79390000000	USD
CY2018Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	64663000000	USD
CY2019Q4	us-gaap	Commercial Paper CommercialPaper	2516000000	USD
CY2018Q4	us-gaap	Commercial Paper CommercialPaper	2749000000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	400000000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	5465000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2124000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2716000000	USD
CY2019Q4	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	3631000000	USD
CY2018Q4	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	2386000000	USD
CY2019Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	499000000	USD
CY2018Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	445000000	USD
CY2019Q4	nee	Accrued Interest And Taxes AccruedInterestAndTaxes	558000000	USD
CY2018Q4	nee	Accrued Interest And Taxes AccruedInterestAndTaxes	477000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	344000000	USD
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	675000000	USD
CY2019Q4	us-gaap	Construction Payable Current ConstructionPayableCurrent	1152000000	USD
CY2018Q4	us-gaap	Construction Payable Current ConstructionPayableCurrent	1195000000	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	320000000	USD
CY2018Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	325000000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2309000000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1130000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	13853000000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	17563000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3457000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3135000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	8361000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	7367000000	USD
CY2019Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	9936000000	USD
CY2018Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	9009000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	863000000	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	516000000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1831000000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1449000000	USD
CY2019Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	24448000000	USD
CY2018Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	21476000000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	117691000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	103702000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3388000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5776000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5323000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	4216000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3911000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2357000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	54000000	USD
CY2019	nee	Nuclear Fuel And Other Amortization NuclearFuelAndOtherAmortization	262000000	USD
CY2018	nee	Nuclear Fuel And Other Amortization NuclearFuelAndOtherAmortization	236000000	USD
CY2017	nee	Nuclear Fuel And Other Amortization NuclearFuelAndOtherAmortization	281000000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	72000000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	11000000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	446000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	108000000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-54000000	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-436000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-17000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-16000000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	25000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	258000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1463000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-882000000	USD
CY2019	nee	Cost Recovery Clauses And Franchise Fees CostRecoveryClausesAndFranchiseFees	-155000000	USD
CY2018	nee	Cost Recovery Clauses And Franchise Fees CostRecoveryClausesAndFranchiseFees	225000000	USD
CY2017	nee	Cost Recovery Clauses And Franchise Fees CostRecoveryClausesAndFranchiseFees	-82000000	USD
CY2019	nee	Regulatory Asset Purchased Power Agreement Termination Net RegulatoryAssetPurchasedPowerAgreementTerminationNet	0	USD
CY2018	nee	Regulatory Asset Purchased Power Agreement Termination Net RegulatoryAssetPurchasedPowerAgreementTerminationNet	52000000	USD
CY2017	nee	Regulatory Asset Purchased Power Agreement Termination Net RegulatoryAssetPurchasedPowerAgreementTerminationNet	243000000	USD
CY2019	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	0	USD
CY2018	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	0	USD
CY2017	nee	Income Associated With Differential Membership Interests IncomeAssociatedWithDifferentialMembershipInterests	460000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	66000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	358000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	141000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	438000000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	328000000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	160000000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	461000000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	191000000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1223000000	USD
CY2019	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2018	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	3927000000	USD
CY2017	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2019	us-gaap	Increase Decrease In Recoverable Property Damage Costs IncreaseDecreaseInRecoverablePropertyDamageCosts	180000000	USD
CY2018	us-gaap	Increase Decrease In Recoverable Property Damage Costs IncreaseDecreaseInRecoverablePropertyDamageCosts	0	USD
CY2017	us-gaap	Increase Decrease In Recoverable Property Damage Costs IncreaseDecreaseInRecoverablePropertyDamageCosts	108000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-213000000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	156000000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	109000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-123000000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	631000000	USD
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	333000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	93000000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	220000000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	60000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	116000000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	163000000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	758000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	231000000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	83000000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-19000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8155000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6593000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6458000000	USD
CY2019	nee	Capital Expenditures Of Public Utility CapitalExpendituresOfPublicUtility	5560000000	USD
CY2018	nee	Capital Expenditures Of Public Utility CapitalExpendituresOfPublicUtility	5012000000	USD
CY2017	nee	Capital Expenditures Of Public Utility CapitalExpendituresOfPublicUtility	5174000000	USD
CY2019	nee	Payments To Acquire Businesses Gross And Related Capital Expenditures PaymentsToAcquireBusinessesGrossAndRelatedCapitalExpenditures	5165000000	USD
CY2018	nee	Payments To Acquire Businesses Gross And Related Capital Expenditures PaymentsToAcquireBusinessesGrossAndRelatedCapitalExpenditures	0	USD
CY2017	nee	Payments To Acquire Businesses Gross And Related Capital Expenditures PaymentsToAcquireBusinessesGrossAndRelatedCapitalExpenditures	0	USD
CY2019	nee	Independent Power Investments IndependentPowerInvestments	6385000000	USD
CY2018	nee	Independent Power Investments IndependentPowerInvestments	7045000000	USD
CY2017	nee	Independent Power Investments IndependentPowerInvestments	5335000000	USD
CY2019	us-gaap	Payments For Proceeds From Nuclear Fuel PaymentsForProceedsFromNuclearFuel	315000000	USD
CY2018	us-gaap	Payments For Proceeds From Nuclear Fuel PaymentsForProceedsFromNuclearFuel	267000000	USD
CY2017	us-gaap	Payments For Proceeds From Nuclear Fuel PaymentsForProceedsFromNuclearFuel	197000000	USD
CY2019	nee	Other Capital Expenditures OtherCapitalExpenditures	37000000	USD
CY2018	nee	Other Capital Expenditures OtherCapitalExpenditures	680000000	USD
CY2017	nee	Other Capital Expenditures OtherCapitalExpenditures	34000000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1454000000	USD
CY2019	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	1163000000	USD
CY2018	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	1617000000	USD
CY2017	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	178000000	USD
CY2019	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	4008000000	USD
CY2018	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	3410000000	USD
CY2017	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	3207000000	USD
CY2019	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	4160000000	USD
CY2018	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	3733000000	USD
CY2017	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	3244000000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	637000000	USD
CY2017	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	7000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-274000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-123000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-220000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16177000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-10950000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8918000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	13919000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4399000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	8354000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5492000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3102000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6780000000	USD
CY2019	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1604000000	USD
CY2018	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1841000000	USD
CY2017	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1414000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-234000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	1062000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	1419000000	USD
CY2019	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	200000000	USD
CY2018	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	5665000000	USD
CY2017	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	450000000	USD
CY2019	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	4765000000	USD
CY2018	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	455000000	USD
CY2017	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	2000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	-54000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	-21000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1494000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	718000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	55000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	548000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	2408000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	2101000000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	1845000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-391000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-372000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-725000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3873000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7634000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2888000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-7000000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	26000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-4145000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3270000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	454000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5253000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1983000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1529000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1108000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5253000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1983000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1799000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	1209000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	1186000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	184000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	200000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	142000000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3573000000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2138000000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3029000000	USD
CY2019	nee	Increase Decreasein Property Plantand Equipment Net Dueto Cash Grants Under American Recoveryand Reinvestment Actof2009 IncreaseDecreaseinPropertyPlantandEquipmentNetDuetoCashGrantsUnderAmericanRecoveryandReinvestmentActof2009	0	USD
CY2018	nee	Increase Decreasein Property Plantand Equipment Net Dueto Cash Grants Under American Recoveryand Reinvestment Actof2009 IncreaseDecreaseinPropertyPlantandEquipmentNetDuetoCashGrantsUnderAmericanRecoveryandReinvestmentActof2009	0	USD
CY2017	nee	Increase Decreasein Property Plantand Equipment Net Dueto Cash Grants Under American Recoveryand Reinvestment Actof2009 IncreaseDecreaseinPropertyPlantandEquipmentNetDuetoCashGrantsUnderAmericanRecoveryandReinvestmentActof2009	-154000000	USD
CY2019	nee	Changesinpropertyplantandequipmentasaresultofasettlement Changesinpropertyplantandequipmentasaresultofasettlement	7000000	USD
CY2018	nee	Changesinpropertyplantandequipmentasaresultofasettlement Changesinpropertyplantandequipmentasaresultofasettlement	5000000	USD
CY2017	nee	Changesinpropertyplantandequipmentasaresultofasettlement Changesinpropertyplantandequipmentasaresultofasettlement	108000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	25358000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	29531000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	37413000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	41360000000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	2000000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	5.00
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.44
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.93
CY2019Q4	nee	Approximate Number Of Customer Accounts ApproximateNumberOfCustomerAccounts	5000000000000	account
CY2018	nee	Equity Method Investment Realized Gain Losson Deconsolidation Before Tax EquityMethodInvestmentRealizedGainLossonDeconsolidationBeforeTax	3900000000	USD
CY2018	nee	Equity Method Investment Realized Gain Losson Deconsolidation After Tax EquityMethodInvestmentRealizedGainLossonDeconsolidationAfterTax	3000000000.0	USD
CY2019Q4	nee	Regulatory Assets Purchased Power Agreement Current RegulatoryAssetsPurchasedPowerAgreementCurrent	165000000	USD
CY2018Q4	nee	Regulatory Assets Purchased Power Agreement Current RegulatoryAssetsPurchasedPowerAgreementCurrent	165000000	USD
CY2019Q4	nee	Regulatory Assets Deferred Clause And Franchise Expenses Current RegulatoryAssetsDeferredClauseAndFranchiseExpensesCurrent	5000000	USD
CY2018Q4	nee	Regulatory Assets Deferred Clause And Franchise Expenses Current RegulatoryAssetsDeferredClauseAndFranchiseExpensesCurrent	146000000	USD
CY2018Q4	nee	Current Regulatory Assets Other CurrentRegulatoryAssetsOther	137000000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	335000000	USD
CY2018Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	448000000	USD
CY2019Q4	nee	Regulatory Assets Purchased Power Agreement Noncurrent RegulatoryAssetsPurchasedPowerAgreementNoncurrent	634000000	USD
CY2018Q4	nee	Regulatory Assets Purchased Power Agreement Noncurrent RegulatoryAssetsPurchasedPowerAgreementNoncurrent	798000000	USD
CY2019Q4	nee	Noncurrent Regulatory Asset Other NoncurrentRegulatoryAssetOther	2653000000	USD
CY2018Q4	nee	Noncurrent Regulatory Asset Other NoncurrentRegulatoryAssetOther	2492000000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3287000000	USD
CY2018Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3290000000	USD
CY2019Q4	nee	Regulatory Liability Deferred Revenueand Credits Current RegulatoryLiabilityDeferredRevenueandCreditsCurrent	309000000	USD
CY2018Q4	nee	Regulatory Liability Deferred Revenueand Credits Current RegulatoryLiabilityDeferredRevenueandCreditsCurrent	265000000	USD
CY2019Q4	nee	Regulatory Liability Current Other RegulatoryLiabilityCurrentOther	11000000	USD
CY2018Q4	nee	Regulatory Liability Current Other RegulatoryLiabilityCurrentOther	60000000	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	320000000	USD
CY2018Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	325000000	USD
CY2019Q4	nee	Noncurrent Regulatory Liability Asset Retirement Obligation Regulatory Expense Difference NoncurrentRegulatoryLiabilityAssetRetirementObligationRegulatoryExpenseDifference	2826000000	USD
CY2018Q4	nee	Noncurrent Regulatory Liability Asset Retirement Obligation Regulatory Expense Difference NoncurrentRegulatoryLiabilityAssetRetirementObligationRegulatoryExpenseDifference	2352000000	USD
CY2019Q4	nee	Noncurrent Regulatory Liability Accrued Asset Removal Costs NoncurrentRegulatoryLiabilityAccruedAssetRemovalCosts	1346000000	USD
CY2018Q4	nee	Noncurrent Regulatory Liability Accrued Asset Removal Costs NoncurrentRegulatoryLiabilityAccruedAssetRemovalCosts	991000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	4862000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	4815000000	USD
CY2019Q4	nee	Noncurrent Regulatory Liability Other NoncurrentRegulatoryLiabilityOther	902000000	USD
CY2018Q4	nee	Noncurrent Regulatory Liability Other NoncurrentRegulatoryLiabilityOther	851000000	USD
CY2019Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	9936000000	USD
CY2018Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	9009000000	USD
CY2019	nee	Convertible Investment Tax Credits ConvertibleInvestmentTaxCredits	824000000	USD
CY2018	nee	Convertible Investment Tax Credits ConvertibleInvestmentTaxCredits	1200000000	USD
CY2019Q4	nee	Convertible Investment Tax Credits Included In Other Receivables ConvertibleInvestmentTaxCreditsIncludedInOtherReceivables	10000000	USD
CY2018Q4	nee	Convertible Investment Tax Credits Included In Other Receivables ConvertibleInvestmentTaxCreditsIncludedInOtherReceivables	138000000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	72000000	USD
CY2019	nee	Impairmentof Long Lived Assets Heldforuse Netof Tax ImpairmentofLongLivedAssetsHeldforuseNetofTax	54000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	508000000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4615000000	USD
CY2019Q4	nee	Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeassets Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeassets	139000000	USD
CY2019Q4	nee	Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeliabilities Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeliabilities	-66000000	USD
CY2018Q4	nee	Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeassets Restrictedcashrelatedtomargincashcollateralthatisnettedagainstderivativeassets	184000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4204000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	891000000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	135000000	USD
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	135000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	473000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	659000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	56000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	86000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	417000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	573000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	19000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	35000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	18000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	14000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	8000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4000000	USD
CY2019Q4	nee	Revenue Equivalent Of Difference In Accumulated Deferred Income Taxes Computer Under Accounting Rules Versus Regulatory Rules RevenueEquivalentOfDifferenceInAccumulatedDeferredIncomeTaxesComputerUnderAccountingRulesVersusRegulatoryRules	4141000000	USD
CY2018Q4	nee	Revenue Equivalent Of Difference In Accumulated Deferred Income Taxes Computer Under Accounting Rules Versus Regulatory Rules RevenueEquivalentOfDifferenceInAccumulatedDeferredIncomeTaxesComputerUnderAccountingRulesVersusRegulatoryRules	4074000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	79000000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	395000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	53000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	17500000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	15400000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	4800000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	3806000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	58000000	USD
CY2019	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-14000000	USD
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	762000000	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1624000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	344000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	863000000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	2386000000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1340000000	USD
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	564000000	USD
CY2018Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1355000000	USD
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	675000000	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	516000000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	1919000000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1191000000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	10000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	16000000	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	360000000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	157000000	USD
CY2019	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	20000000	USD
CY2018	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	80000000	USD
CY2017	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	153000000	USD
CY2019Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1700000000	USD
CY2018Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1800000000	USD
CY2019Q4	nee	Additional Collateral Aggregate Fair Value Due To Credit Rating Downgrade To Bbb Or Baa2 AdditionalCollateralAggregateFairValueDueToCreditRatingDowngradeToBbbOrBaa2	215000000	USD
CY2018Q4	nee	Additional Collateral Aggregate Fair Value Due To Credit Rating Downgrade To Bbb Or Baa2 AdditionalCollateralAggregateFairValueDueToCreditRatingDowngradeToBbbOrBaa2	270000000	USD
CY2019Q4	nee	Additional Collateral Aggregate Fair Value Due To Credit Rating Downgrade To Below Investment Grade AdditionalCollateralAggregateFairValueDueToCreditRatingDowngradeToBelowInvestmentGrade	1200000000	USD
CY2018Q4	nee	Additional Collateral Aggregate Fair Value Due To Credit Rating Downgrade To Below Investment Grade AdditionalCollateralAggregateFairValueDueToCreditRatingDowngradeToBelowInvestmentGrade	1500000000	USD
CY2019Q4	nee	Additional Collateral Aggregate Fair Value Due To Other Financial Measures AdditionalCollateralAggregateFairValueDueToOtherFinancialMeasures	590000000	USD
CY2018Q4	nee	Additional Collateral Aggregate Fair Value Due To Other Financial Measures AdditionalCollateralAggregateFairValueDueToOtherFinancialMeasures	610000000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	2000000	USD
CY2019Q4	nee	Letters Of Credit Already Posted Aggregate Fair Value LettersOfCreditAlreadyPostedAggregateFairValue	88000000	USD
CY2018Q4	nee	Letters Of Credit Already Posted Aggregate Fair Value LettersOfCreditAlreadyPostedAggregateFairValue	88000000	USD
CY2019Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	6880000000	USD
CY2018Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	5818000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2030000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1994000000	USD
CY2019	nee	Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity SpecialUseFundsNuclearDecommissioningFundsWeightedAverageMaturity	P8Y
CY2017	nee	Tax Cutsand Jobs Actof2017 Changein Tax Rate Deferred Tax Liability Income Tax Expense Benefit TaxCutsandJobsActof2017ChangeinTaxRateDeferredTaxLiabilityIncomeTaxExpenseBenefit	-6500000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	167000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	30000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	100000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	115000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1153000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1047000000	USD
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	282000000	USD
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	1183000000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-947000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	23000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	63000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	88000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	143000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	330000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	199000000	USD
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	166000000	USD
CY2018	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	393000000	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	287000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	448000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-660000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	632000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.034
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.042
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.021
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.025
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.413
CY2019	nee	Effective Income Tax Rate Reconciliation Production And Investment Tax Credits EffectiveIncomeTaxRateReconciliationProductionAndInvestmentTaxCredits	0.072
CY2018	nee	Effective Income Tax Rate Reconciliation Production And Investment Tax Credits EffectiveIncomeTaxRateReconciliationProductionAndInvestmentTaxCredits	0.030
CY2017	nee	Effective Income Tax Rate Reconciliation Production And Investment Tax Credits EffectiveIncomeTaxRateReconciliationProductionAndInvestmentTaxCredits	0.084
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.062
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.018
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	0
CY2019	nee	Effective Income Tax Rate Reconciliation Convertible Investment Tax Credits EffectiveIncomeTaxRateReconciliationConvertibleInvestmentTaxCredits	0
CY2018	nee	Effective Income Tax Rate Reconciliation Convertible Investment Tax Credits EffectiveIncomeTaxRateReconciliationConvertibleInvestmentTaxCredits	0
CY2017	nee	Effective Income Tax Rate Reconciliation Convertible Investment Tax Credits EffectiveIncomeTaxRateReconciliationConvertibleInvestmentTaxCredits	-0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.015
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.030
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.117
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.142
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10133000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	9315000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	417000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	374000000	USD
CY2019Q4	nee	Deferredtaxliabilitiesequitymethodinvestmentofwhollyownedindirectsubsidiary Deferredtaxliabilitiesequitymethodinvestmentofwhollyownedindirectsubsidiary	2019000000	USD
CY2018Q4	nee	Deferredtaxliabilitiesequitymethodinvestmentofwhollyownedindirectsubsidiary Deferredtaxliabilitiesequitymethodinvestmentofwhollyownedindirectsubsidiary	1925000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1618000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1505000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	14187000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13119000000	USD
CY2019Q4	nee	Deferred Tax Assets Tax Deferred Expense Decommissioning Reserves DeferredTaxAssetsTaxDeferredExpenseDecommissioningReserves	317000000	USD
CY2018Q4	nee	Deferred Tax Assets Tax Deferred Expense Decommissioning Reserves DeferredTaxAssetsTaxDeferredExpenseDecommissioningReserves	313000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	380000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	350000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	310000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	1335000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3406000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3259000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	368000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	1277000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	515000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	751000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	285000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	273000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6036000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	5987000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	8151000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	7132000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	210000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	235000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	8361000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	7367000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	8151000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	7132000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	380000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3406000000	USD
CY2019Q4	nee	Total Number Of Consolidated Variable Interest Entities TotalNumberOfConsolidatedVariableInterestEntities	33	variable_interest_entity
CY2019Q4	nee	Equity Method Investments Of Wholly Owned Indirect Subsidiary EquityMethodInvestmentsOfWhollyOwnedIndirectSubsidiary	7453000000	USD
CY2018Q4	nee	Equity Method Investments Of Wholly Owned Indirect Subsidiary EquityMethodInvestmentsOfWhollyOwnedIndirectSubsidiary	6748000000	USD
CY2019Q4	nee	Equity Method Investment Ownership Percentage Low Range EquityMethodInvestmentOwnershipPercentageLowRange	0.31
CY2019Q4	nee	Equity Method Investment Ownership Percentage High Range EquityMethodInvestmentOwnershipPercentageHighRange	0.61
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	128000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	20659000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	16334000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	6956000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	5990000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	13703000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	10344000000	USD
CY2019	us-gaap	Interest And Fee Income Other Loans InterestAndFeeIncomeOtherLoans	101000000	USD
CY2018	us-gaap	Interest And Fee Income Other Loans InterestAndFeeIncomeOtherLoans	94000000	USD
CY2019Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	53000000	USD
CY2018Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	45000000	USD
CY2019Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	33000000	USD
CY2018Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	34000000	USD
CY2019Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	669000000	USD
CY2019Q4	us-gaap	Guarantees Fair Value Disclosure GuaranteesFairValueDisclosure	31000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3769000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	6638000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5380000000	USD
CY2019	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2018	us-gaap	Dilutive Securities DilutiveSecurities	-19000000	USD
CY2017	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2019	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	3769000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	6619000000	USD
CY2017	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	5380000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	482000000.0	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	473200000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	468800000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3500000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3800000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3700000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	485500000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	477000000.0	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	472500000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.82
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.03
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.48
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.76
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	13.88
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.39
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	700000	shares
CY2018	nee	Aoci Impactof Nep Deconsolidation AOCIImpactofNEPDeconsolidation	58000000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	198000000	USD
CY2017Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	6000000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	192000000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	11000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	111000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-53000000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-24000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-29000000	USD
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3100000	shares
CY2016Q4	us-gaap	Forward Contract Indexed To Issuers Equity Forward Rate ForwardContractIndexedToIssuersEquityForwardRate	124.00
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	100000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	82000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	76000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	17000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	21000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	29000000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	112000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	15000000	shares
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-70000000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-328000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-188000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-3000000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-24000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	21000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	1000000	USD
CY2019	nee	Other Comprehensive Income Loss Net Of Tax Impact Of Acquisition OtherComprehensiveIncomeLossNetOfTaxImpactOfAcquisition	-1000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-169000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	37543000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26782000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2124000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4323000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4134000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1700000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	3380000000	USD
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0195
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0295
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	3031000000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	49000000	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	158000000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	26000000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	4000000	USD
CY2018	nee	Asset Retirement Obligation Impact Of Deconsolidation AssetRetirementObligationImpactOfDeconsolidation	81000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	3135000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	100000000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	172000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	65000000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	32000000	USD
CY2019	nee	Asset Retirement Obligation Additions From Acquisitions AssetRetirementObligationAdditionsFromAcquisitions	132000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	3506000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	49000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	6880000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	5818000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	499000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	498000000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	133000000	USD
CY2018Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	141000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	62000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	56000000	USD
CY2018Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	68000000	USD
CY2018Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	63000000	USD
CY2019Q4	nee	Operating Lease Weighted Average Borrowing Rate Percent OperatingLeaseWeightedAverageBorrowingRatePercent	0.0373
CY2018Q4	nee	Operating Lease Weighted Average Borrowing Rate Percent OperatingLeaseWeightedAverageBorrowingRatePercent	0.0431
CY2019Q4	nee	Finance Lease Weighted Average Borrowing Rate Percent FinanceLeaseWeightedAverageBorrowingRatePercent	0.0315
CY2018Q4	nee	Finance Lease Weighted Average Borrowing Rate Percent FinanceLeaseWeightedAverageBorrowingRatePercent	0.0272
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P31Y
CY2018Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P19Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P14Y
CY2018Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2019Q4	nee	Lessee Operating Lease And Finance Lease Liability Payments Due LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDue	981000000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	91000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	450000000	USD
CY2019Q4	us-gaap	Sales Type Lease Net Investment In Lease SalesTypeLeaseNetInvestmentInLease	50000000	USD
CY2018Q4	us-gaap	Sales Type Lease Net Investment In Lease SalesTypeLeaseNetInvestmentInLease	69000000	USD
CY2018	us-gaap	Sales Type Lease Selling Profit Loss SalesTypeLeaseSellingProfitLoss	-20000000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	150000000	USD
CY2019Q4	nee	Amount Of Private Liability Insurance Per Nuclear Power Plant Site AmountOfPrivateLiabilityInsurancePerNuclearPowerPlantSite	450000000	USD
CY2019Q4	nee	Amount Of Secondary Financial Protection Per Incident At Nuclear Reactor AmountOfSecondaryFinancialProtectionPerIncidentAtNuclearReactor	13500000000	USD
CY2019Q4	nee	Potential Retrospective Assessments Under Secondary Financial Protection System PotentialRetrospectiveAssessmentsUnderSecondaryFinancialProtectionSystem	1100000000	USD
CY2019Q4	nee	Potential Retrospective Assessments Under Secondary Financial Protection System Payable Per Incident Per Year PotentialRetrospectiveAssessmentsUnderSecondaryFinancialProtectionSystemPayablePerIncidentPerYear	164000000	USD
CY2019Q4	nee	Amount Of Limited Insurance Coverage Per Occurrence Per Site Under Nuclear Insurance Mutual Companies For Property Damage Decontamination And Premature Decommissioning Risks AmountOfLimitedInsuranceCoveragePerOccurrencePerSiteUnderNuclearInsuranceMutualCompaniesForPropertyDamageDecontaminationAndPrematureDecommissioningRisks	2750000000	USD
CY2019Q4	nee	Amount Of Sublimit For Non Nuclear Perils Per Occurrence Per Site Under Nuclear Insurance Mutual Companies For Property Damage Decontamination And Premature Decommissioning Risks AmountOfSublimitForNonNuclearPerilsPerOccurrencePerSiteUnderNuclearInsuranceMutualCompaniesForPropertyDamageDecontaminationAndPrematureDecommissioningRisks	1500000000	USD
CY2019	nee	Coinsurance Percent CoinsurancePercent	0.10
CY2019Q4	nee	Coinsurance Limitof Coverage Per Loss Per Site Occurrence CoinsuranceLimitofCoveragePerLossPerSiteOccurrence	400000000	USD
CY2019Q4	nee	Potential Retrospective Assessment Limited Insurance Coverage Per Occurrence Per Site Nuclear Insurance Mutual Companies Property Damage Decontamination And Premature Decommissioning Risks PotentialRetrospectiveAssessmentLimitedInsuranceCoveragePerOccurrencePerSiteNuclearInsuranceMutualCompaniesPropertyDamageDecontaminationAndPrematureDecommissioningRisks	174000000	USD
CY2019	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	19204000000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	13851000000	USD
CY2019	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	2249000000	USD
CY2019	nee	Interest Income InterestIncome	54000000	USD
CY2019	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	4216000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	66000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	448000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3388000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3769000000	USD
CY2019	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	17462000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	107178000000	USD
CY2019Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	25168000000	USD
CY2019Q4	us-gaap	Assets Assets	117691000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	7453000000	USD
CY2018	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	16727000000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	12447000000	USD
CY2018	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1498000000	USD
CY2018	nee	Interest Income InterestIncome	51000000	USD
CY2018	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	3911000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	358000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5776000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	6638000000	USD
CY2018	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	13004000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	92083000000	USD
CY2018Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	21749000000	USD
CY2018Q4	us-gaap	Assets Assets	103702000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	6748000000	USD
CY2017	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	17173000000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	12000000000	USD
CY2017	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1558000000	USD
CY2017	nee	Interest Income InterestIncome	81000000	USD
CY2017	nee	Depreciation And Amortization Excluding Nuclear Fuel DepreciationAndAmortizationExcludingNuclearFuel	2357000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	141000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-660000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5323000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5380000000	USD
CY2017	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	10740000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	93565000000	USD
CY2017Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	21276000000	USD
CY2017Q4	us-gaap	Assets Assets	97963000000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2321000000	USD
CY2019	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	19204000000	USD
CY2018	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	16727000000	USD
CY2017	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	17173000000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	13851000000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	12447000000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	12000000000	USD
CY2019	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	2249000000	USD
CY2018	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1498000000	USD
CY2017	nee	Interest Expense Aggregate Expenses InterestExpenseAggregateExpenses	1558000000	USD
CY2019	nee	Equity In Earnings Of Subsidiaries EquityInEarningsOfSubsidiaries	0	USD
CY2018	nee	Equity In Earnings Of Subsidiaries EquityInEarningsOfSubsidiaries	0	USD
CY2017	nee	Equity In Earnings Of Subsidiaries EquityInEarningsOfSubsidiaries	0	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	66000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	358000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	141000000	USD
CY2019	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2018	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	3927000000	USD
CY2017	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	0	USD
CY2019	nee	Other Income Deductions Net OtherIncomeDeductionsNet	666000000	USD
CY2018	nee	Other Income Deductions Net OtherIncomeDeductionsNet	285000000	USD
CY2017	nee	Other Income Deductions Net OtherIncomeDeductionsNet	907000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3836000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7352000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4663000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	448000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-660000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3388000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5776000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5323000000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-381000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-862000000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-57000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3769000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	6638000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	5380000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3789000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6667000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5561000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	107178000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	92083000000	USD
CY2019Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	25168000000	USD
CY2018Q4	nee	Accumulated Depreciation And Amortization AccumulatedDepreciationAndAmortization	21749000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	82010000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	70334000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	600000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	638000000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	2807000000	USD
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	2969000000	USD
CY2019Q4	nee	Other Current Assets OtherCurrentAssets	4001000000	USD
CY2018Q4	nee	Other Current Assets OtherCurrentAssets	2786000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	7408000000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	6393000000	USD
CY2019Q4	nee	Investmentsin Wholly Owned Subsidiaries InvestmentsinWhollyOwnedSubsidiaries	0	USD
CY2018Q4	nee	Investmentsin Wholly Owned Subsidiaries InvestmentsinWhollyOwnedSubsidiaries	0	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	7453000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	6748000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4204000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	891000000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	16616000000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	19336000000	USD
CY2019Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	28273000000	USD
CY2018Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	26975000000	USD
CY2019Q4	us-gaap	Assets Assets	117691000000	USD
CY2018Q4	us-gaap	Assets Assets	103702000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	37005000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	34144000000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	4355000000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	3269000000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	487000000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	468000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	37543000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26782000000	USD
CY2019Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	79390000000	USD
CY2018Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	64663000000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	5040000000	USD
CY2018Q4	us-gaap	Debt Current DebtCurrent	10930000000	USD
CY2019Q4	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	3631000000	USD
CY2018Q4	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	2386000000	USD
CY2019Q4	nee	Other Current Liabilities OtherCurrentLiabilities	5182000000	USD
CY2018Q4	nee	Other Current Liabilities OtherCurrentLiabilities	4247000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	13853000000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	17563000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3457000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3135000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	8361000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	7367000000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	12630000000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	10974000000	USD
CY2019Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	24448000000	USD
CY2018Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	21476000000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	117691000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	103702000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8155000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6593000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6458000000	USD
CY2019	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	17462000000	USD
CY2018	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	13004000000	USD
CY2017	nee	Capital Expenditures Independent Power Investments And Nuclear Fuel Purchases CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases	10740000000	USD
CY2019	nee	Capital Contribution To Subsidiary CapitalContributionToSubsidiary	0	USD
CY2018	nee	Capital Contribution To Subsidiary CapitalContributionToSubsidiary	0	USD
CY2017	nee	Capital Contribution To Subsidiary CapitalContributionToSubsidiary	0	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1454000000	USD
CY2019	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	1163000000	USD
CY2018	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	1617000000	USD
CY2017	nee	Proceedsfrom Saleof Independent Power Investments ProceedsfromSaleofIndependentPowerInvestments	178000000	USD
CY2019	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	4008000000	USD
CY2018	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	3410000000	USD
CY2017	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	3207000000	USD
CY2019	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	4160000000	USD
CY2018	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	3733000000	USD
CY2017	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	3244000000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	637000000	USD
CY2017	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	7000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-274000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-123000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-220000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16177000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-10950000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8918000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	13919000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4399000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	8354000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5492000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3102000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6780000000	USD
CY2019	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1604000000	USD
CY2018	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1841000000	USD
CY2017	nee	Sale Of Differential Membership Interests SaleOfDifferentialMembershipInterests	1414000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-234000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	1062000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	1419000000	USD
CY2019	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	200000000	USD
CY2018	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	5665000000	USD
CY2017	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	450000000	USD
CY2019	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	4765000000	USD
CY2018	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	455000000	USD
CY2017	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	2000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	-54000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	-21000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	0	USD
CY2017	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	0	USD
CY2017	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	0	USD
CY2017	us-gaap	Proceeds From Repayments Of Related Party Debt ProceedsFromRepaymentsOfRelatedPartyDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1494000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	718000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	55000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	548000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	2408000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	2101000000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	1845000000	USD
CY2019	nee	Cash Dividends Receivedfrom Paidto Parent Company CashDividendsReceivedfromPaidtoParentCompany	0	USD
CY2018	nee	Cash Dividends Receivedfrom Paidto Parent Company CashDividendsReceivedfromPaidtoParentCompany	0	USD
CY2017	nee	Cash Dividends Receivedfrom Paidto Parent Company CashDividendsReceivedfromPaidtoParentCompany	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-391000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-372000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-725000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3873000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7634000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2888000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-7000000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	26000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-4145000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3270000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	454000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5253000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1983000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1529000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1108000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5253000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1983000000	USD
CY2019Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4075000000	USD
CY2019Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4970000000	USD
CY2019Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	5572000000	USD
CY2019Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4588000000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1135000000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1747000000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1593000000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	878000000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	606000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	1139000000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	798000000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	844000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	680000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	1234000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	879000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	975000000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.58
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.82
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.00
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.56
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.81
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.99
CY2019Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.25
CY2019Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.25
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.25
CY2019Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.25
CY2018Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3857000000	USD
CY2018Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4063000000	USD
CY2018Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4416000000	USD
CY2018Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	4390000000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1059000000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1146000000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	968000000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1107000000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	3834000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	687000000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	941000000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	314000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	4431000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	781000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	1005000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	422000000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.41
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.12
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.32
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.61
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2018Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.11
CY2018Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.11
CY2018Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.11
CY2018Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.11
CY2019	dei	Amendment Flag AmendmentFlag	false

Files In Submission

Name	View Source	Status
0000753308-20-000021-index-headers.html	Edgar Link	pending
0000753308-20-000021-index.html	Edgar Link	pending
0000753308-20-000021.txt	Edgar Link	pending
0000753308-20-000021-xbrl.zip	Edgar Link	pending
chart-netgencapacity2019.jpg	Edgar Link	pending
chart-netgencapacity2019_2.jpg	Edgar Link	pending
chart-netgencapacity2019_3.jpg	Edgar Link	pending
chart-netgencapacity2019_4.jpg	Edgar Link	pending
compareresidentialbill2019.jpg	Edgar Link	pending
customeraccounts2019.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
fpl.jpg	Edgar Link	pending
fplserviceterritoty2019.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nee-12312019x10k.htm	Edgar Link	pending
nee-12312019x10k_htm.xml	Edgar Link	completed
nee-20191231.xsd	Edgar Link	pending
nee-20191231_cal.xml	Edgar Link	unprocessable
nee-20191231_def.xml	Edgar Link	unprocessable
nee-20191231_lab.xml	Edgar Link	unprocessable
nee-20191231_pre.xml	Edgar Link	unprocessable
nee-q42019xex10hh.htm	Edgar Link	pending
nee-q42019xex10ss.htm	Edgar Link	pending
nee-q42019xex10tt.htm	Edgar Link	pending
nee-q42019xex21.htm	Edgar Link	pending
nee-q42019xex23.htm	Edgar Link	pending
nee-q42019xex31a.htm	Edgar Link	pending
nee-q42019xex31b.htm	Edgar Link	pending
nee-q42019xex31c.htm	Edgar Link	pending
nee-q42019xex31d.htm	Edgar Link	pending
nee-q42019xex32a.htm	Edgar Link	pending
nee-q42019xex32b.htm	Edgar Link	pending
nee-q42019xex4zz.htm	Edgar Link	pending
nee.jpg	Edgar Link	pending
neeorganizationalchart2019.jpg	Edgar Link	pending
neergeneratingfacilities2019.jpg	Edgar Link	pending
neeriso2019.jpg	Edgar Link	pending
operatingrevenues2019.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
totalreturn2019.jpg	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$NEE
NEXTERA ENERGY INC Stock $nee

2019 Q4 Form 10-K Financial Statement

#000075330820000021 Filed on February 14, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NEE NEXTERA ENERGY INC Stock $nee

2019 Q4 Form 10-K Financial Statement

#000075330820000021 Filed on February 14, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NEE
NEXTERA ENERGY INC Stock $nee