$NRG
NRG ENERGY, INC. Stock $nrg

$nrg Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-Q Financial Statement

#000101387120000023 Filed on May 07, 2020

Income Statement

Concept	2020 Q1	2019 Q1
Revenue	$2.019B	$2.165B
YoY Change	-6.74%	4.84%
Cost Of Revenue	$1.457B	$1.651B
YoY Change	-11.75%	19.21%
Gross Profit	$562.0M	$514.0M
YoY Change	9.34%	-24.41%
Gross Profit Margin	27.84%	23.74%
Selling, General & Admin	$190.0M	$194.0M
YoY Change	-2.06%	10.23%
% of Gross Profit	33.81%	37.74%
Research & Development	$3.000M	$2.000M
YoY Change	50.0%	-60.0%
% of Gross Profit	0.53%	0.39%
Depreciation & Amortization	$109.0M	$85.00M
YoY Change	28.24%	-29.17%
% of Gross Profit	19.4%	16.54%
Operating Expenses	$193.0M	$196.0M
YoY Change	-1.53%	8.29%
Operating Profit	$244.0M	$221.0M
YoY Change	10.41%	-38.78%
Interest Expense	$98.00M	$114.0M
YoY Change	-14.04%	-1.72%
% of Operating Profit	40.16%	51.58%
Other Income/Expense, Net	-$100.0M	-$123.0M
YoY Change	-18.7%	5.13%
Pretax Income	$144.0M	$98.00M
YoY Change	46.94%	-59.84%
Income Tax	$23.00M	$4.000M
% Of Pretax Income	15.97%	4.08%
Net Earnings	$121.0M	$482.0M
YoY Change	-74.9%	72.76%
Net Earnings / Revenue	5.99%	22.26%
Basic Earnings Per Share	$0.49	$1.73
Diluted Earnings Per Share	$0.49	$1.72
COMMON SHARES
Basic Shares Outstanding	248.0M shares	278.0M shares
Diluted Shares Outstanding	249.0M shares	280.0M shares

Balance Sheet

Concept	2020 Q1	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$759.0M	$859.0M
YoY Change	-11.64%	12.43%
Cash & Equivalents	$759.0M	$859.0M
Short-Term Investments
Other Short-Term Assets	$1.433B	$1.310B
YoY Change	9.39%	-42.77%
Inventory	$372.0M	$391.0M
Prepaid Expenses
Receivables	$915.0M	$898.0M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$3.479B	$3.458B
YoY Change	0.61%	-24.12%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.573B	$2.650B
YoY Change	-2.91%	-80.95%
Goodwill	$579.0M	$573.0M
YoY Change	1.05%	6.31%
Intangibles
YoY Change
Long-Term Investments	$350.0M	$387.0M
YoY Change	-9.56%	-61.72%
Other Assets	$225.0M	$255.0M
YoY Change	-11.76%	-62.56%
Total Long-Term Assets	$9.343B	$3.422B
YoY Change	173.03%	-35.24%
TOTAL ASSETS
Total Short-Term Assets	$3.479B	$3.458B
Total Long-Term Assets	$9.343B	$3.422B
Total Assets	$12.82B	$9.530B
YoY Change	34.54%	-59.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$708.0M	$697.0M
YoY Change	1.58%	-11.44%
Accrued Expenses	$621.0M	$624.0M
YoY Change	-0.48%	-24.18%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$640.0M	$124.0M
YoY Change	416.13%	-87.03%
Total Short-Term Liabilities	$2.852B	$1.945B
YoY Change	46.63%	-47.55%
LONG-TERM LIABILITIES
Long-Term Debt	$5.807B	$6.366B
YoY Change	-8.78%	-58.68%
Other Long-Term Liabilities	$1.076B	$1.089B
YoY Change	-1.19%	-4.14%
Total Long-Term Liabilities	$8.434B	$9.105B
YoY Change	-7.37%	-48.58%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.852B	$1.945B
Total Long-Term Liabilities	$8.434B	$9.105B
Total Liabilities	$11.29B	$11.05B
YoY Change	2.14%	-48.4%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.570B	-$5.548B
YoY Change	-71.7%	-7.26%
Common Stock	$8.502B	$8.477B
YoY Change	0.29%	1.12%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$5.189B	$4.371B
YoY Change	18.71%	76.68%
Treasury Stock Shares	177.4M shares	154.2M shares
Shareholders Equity	$1.536B	-$1.538B
YoY Change
Total Liabilities & Shareholders Equity	$12.82B	$9.530B
YoY Change	34.54%	-59.88%

Cashflow Statement

Concept	2020 Q1	2019 Q1
OPERATING ACTIVITIES
Net Income	$121.0M	$482.0M
YoY Change	-74.9%	72.76%
Depreciation, Depletion And Amortization	$109.0M	$85.00M
YoY Change	28.24%	-29.17%
Cash From Operating Activities	$208.0M	-$91.00M
YoY Change	-328.57%	-126.0%
INVESTING ACTIVITIES
Capital Expenditures	$66.00M	$49.00M
YoY Change	34.69%	-68.39%
Acquisitions	$0.00	$16.00M
YoY Change	-100.0%	700.0%
Other Investing Activities	$0.00	$1.000M
YoY Change	-100.0%
Cash From Investing Activities	-$68.00M	$1.196B
YoY Change	-105.69%	-360.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$179.0M	$2.000M
YoY Change	8850.0%	-71.43%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$293.0M	-$784.0M
YoY Change	-137.37%	5500.0%
NET CHANGE
Cash From Operating Activities	$208.0M	-$91.00M
Cash From Investing Activities	-$68.00M	$1.196B
Cash From Financing Activities	$293.0M	-$784.0M
Net Change In Cash	$433.0M	$272.0M
YoY Change	59.19%	-488.57%
FREE CASH FLOW
Cash From Operating Activities	$208.0M	-$91.00M
Capital Expenditures	$66.00M	$49.00M
Free Cash Flow	$142.0M	-$140.0M
YoY Change	-201.43%	-171.79%

Facts In Submission

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CY2020Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020Q1	dei	Document Type DocumentType	10-Q
CY2020Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2020Q1	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
CY2020Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2020Q1	dei	Entity File Number EntityFileNumber	001-15891
CY2020Q1	dei	Entity Registrant Name EntityRegistrantName	NRG Energy, Inc
CY2020Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	41-1724239
CY2020Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	804 Carnegie Center,
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CY2020Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
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CY2020Q1	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01
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CY2020Q1	us-gaap	Common Stock Value CommonStockValue	4000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	4000000	USD
CY2020Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	8498000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	8501000000	USD
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1570000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1616000000	USD
CY2020Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	177356039	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	172894601	shares
CY2020Q1	us-gaap	Treasury Stock Value TreasuryStockValue	5189000000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	5039000000	USD
CY2020Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-207000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-192000000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1536000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1658000000	USD
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12822000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12531000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	388000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	121000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94000000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-16000000	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-21000000	USD
CY2020Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	109000000	USD
CY2019Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	85000000	USD
CY2020Q1	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	11000000	USD
CY2019Q1	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	7000000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	24000000	USD
CY2019Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	26000000	USD
CY2020Q1	us-gaap	Amortization Of Power Contracts Emission Credits AmortizationOfPowerContractsEmissionCredits	13000000	USD
CY2019Q1	us-gaap	Amortization Of Power Contracts Emission Credits AmortizationOfPowerContractsEmissionCredits	13000000	USD
CY2020Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	6000000	USD
CY2019Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7000000	USD
CY2020Q1	nrg	Gains Losses On Extinguishment Of Debt Non Cash Portion GainsLossesOnExtinguishmentOfDebtNonCashPortion	-1000000	USD
CY2019Q1	nrg	Gains Losses On Extinguishment Of Debt Non Cash Portion GainsLossesOnExtinguishmentOfDebtNonCashPortion	0	USD
CY2020Q1	nrg	Amortization Of Intangibles And Out Of Market Contracts AmortizationOfIntangiblesAndOutOfMarketContracts	7000000	USD
CY2019Q1	nrg	Amortization Of Intangibles And Out Of Market Contracts AmortizationOfIntangiblesAndOutOfMarketContracts	6000000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	5000000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4000000	USD
CY2020Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	14000000	USD
CY2019Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-3000000	USD
CY2020Q1	nrg	Asset Impairment Charges Including Equity Method Investments AssetImpairmentChargesIncludingEquityMethodInvestments	18000000	USD
CY2019Q1	nrg	Asset Impairment Charges Including Equity Method Investments AssetImpairmentChargesIncludingEquityMethodInvestments	0	USD
CY2020Q1	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	46000000	USD
CY2019Q1	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	15000000	USD
CY2020Q1	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	19000000	USD
CY2019Q1	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-2000000	USD
CY2020Q1	nrg	Changes In Collateral Deposits Supporting Energy Risk Management Activities ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities	9000000	USD
CY2019Q1	nrg	Changes In Collateral Deposits Supporting Energy Risk Management Activities ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities	-123000000	USD
CY2020Q1	nrg	Changes In Nuclear Decommissioning Trust Liability ChangesInNuclearDecommissioningTrustLiability	8000000	USD
CY2019Q1	nrg	Changes In Nuclear Decommissioning Trust Liability ChangesInNuclearDecommissioningTrustLiability	9000000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	99000000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	234000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	208000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-99000000	USD
CY2020Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2019Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	8000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	208000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-91000000	USD
CY2020Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	16000000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	66000000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	49000000	USD
CY2020Q1	nrg	Payments For Proceeds From Intangible Assets PaymentsForProceedsFromIntangibleAssets	8000000	USD
CY2019Q1	nrg	Payments For Proceeds From Intangible Assets PaymentsForProceedsFromIntangibleAssets	0	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	121000000	USD
CY2019Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	122000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	112000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	113000000	USD
CY2020Q1	nrg	Proceeds From Sale Of Assets And Sale Of Discontinued Operations Net ProceedsFromSaleOfAssetsAndSaleOfDiscontinuedOperationsNet	15000000	USD
CY2019Q1	nrg	Proceeds From Sale Of Assets And Sale Of Discontinued Operations Net ProceedsFromSaleOfAssetsAndSaleOfDiscontinuedOperationsNet	1313000000	USD
CY2020Q1	nrg	Investments In Proceeds From Sales Of Unconsolidated Affiliates InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates	0	USD
CY2019Q1	nrg	Investments In Proceeds From Sales Of Unconsolidated Affiliates InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates	4000000	USD
CY2020Q1	nrg	Net Contributions To Distributions From Discontinued Operations NetContributionsToDistributionsFromDiscontinuedOperations	0	USD
CY2019Q1	nrg	Net Contributions To Distributions From Discontinued Operations NetContributionsToDistributionsFromDiscontinuedOperations	-44000000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-68000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1198000000	USD
CY2020Q1	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2019Q1	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-2000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1196000000	USD
CY2020Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	74000000	USD
CY2019Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8000000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	179000000	USD
CY2019Q1	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	783000000	USD
CY2020Q1	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-2000000	USD
CY2019Q1	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-1000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	59000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	272000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	385000000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2020Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	60000000	USD
CY2019Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	37000000	USD
CY2020Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	552000000	USD
CY2019Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3000000	USD
CY2019Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	293000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-827000000	USD
CY2020Q1	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2019Q1	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	43000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	293000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-784000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	49000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	433000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	613000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	818000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	885000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1658000000	USD
CY2020Q1	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	121000000	USD
CY2020Q1	nrg	Other Comprehensive Income Loss Net Of Tax And Adjustment For New Accounting Standard OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard	-15000000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	18000000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	150000000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	-21000000	USD
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	75000000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1536000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-1234000000	USD
CY2019Q1	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	482000000	USD
CY2019Q1	nrg	Other Comprehensive Income Loss Net Of Tax And Adjustment For New Accounting Standard OtherComprehensiveIncomeLossNetOfTaxAndAdjustmentForNewAccountingStandard	-2000000	USD
CY2019Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	749000000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	-32000000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5000000	USD
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	8000000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-1538000000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.30
CY2019Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.03
CY2020Q1	nrg	Power Generation Capacity Megawatts PowerGenerationCapacityMegawatts	23000	MW
CY2020Q1	us-gaap	Use Of Estimates UseOfEstimates	Use of EstimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
CY2020Q1	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="text-indent:22.5pt;text-align:justify;margin-bottom:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Reclassifications</span></div><div style="text-indent:22.5pt;text-align:justify;margin-bottom:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Certain prior year amounts have been reclassified for comparative purposes.</span></div>
CY2020Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1832000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1752000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1237000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1262000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	43000000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	24000000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	32000000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	4000000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	39000000	USD
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	759000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	345000000	USD
CY2020Q1	nrg	Funds Deposited By Counterparties FundsDepositedByCounterparties	51000000	USD
CY2019Q4	nrg	Funds Deposited By Counterparties FundsDepositedByCounterparties	32000000	USD
CY2020Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	8000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	8000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	8000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	818000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	385000000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	47000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	42000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	8000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	442000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	607000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	305000000	USD
CY2020Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5000000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1925000000	USD
CY2019Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5000000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1779000000	USD
CY2020Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	133000000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	133000000	USD
CY2020Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	915000000	USD
CY2019Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	1025000000	USD
CY2020Q1	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	328000000	USD
CY2019Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	402000000	USD
CY2020Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	87000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	82000000	USD
CY2020Q1	nrg	Contractwith Customer Liability Increase For Cash Payments Received ContractwithCustomerLiabilityIncreaseForCashPaymentsReceived	27000000	USD
CY2019	nrg	Contractwith Customer Liability Increase For Cash Payments Received ContractwithCustomerLiabilityIncreaseForCashPaymentsReceived	24000000	USD
CY2019Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	13000000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	13000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13000000	USD
CY2020Q1	nrg	Net Credit Exposure NetCreditExposure	293000000	USD
CY2020Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	1000000	USD
CY2020Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	2040000000	USD
CY2020Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1202000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	20000000	USD
CY2019Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	1000000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1993000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1103000000	USD
CY2020Q1	nrg	Derivative Asset Fair Value Determined Using Valuation Techniques Percentage DerivativeAssetFairValueDeterminedUsingValuationTechniquesPercentage	0.15
CY2020Q1	nrg	Derivative Liability Fair Value Determined Using Valuation Techniques Percentage DerivativeLiabilityFairValueDeterminedUsingValuationTechniquesPercentage	0.10
CY2020Q1	nrg	Decrease In Credit Reserve Decrease In Cost Of Revenue DecreaseInCreditReserveDecreaseInCostOfRevenue	2000000	USD
CY2020Q1	us-gaap	Concentration Risk Credit Risk Financial Instrument Maximum Exposure ConcentrationRiskCreditRiskFinancialInstrumentMaximumExposure	346000000	USD
CY2020Q1	nrg	Collateral Held Cash And Letters Of Credit CollateralHeldCashAndLettersOfCredit	54000000	USD
CY2020Q1	nrg	Counterparty Credit Risk Exposure Percentage Of Credit Risk Roll Off CounterpartyCreditRiskExposurePercentageOfCreditRiskRollOff	0.54
CY2020Q1	nrg	Credit Derivative Maximum Net Exposure Percentage CreditDerivativeMaximumNetExposurePercentage	1
CY2020Q1	nrg	Credit Derivative Maximum Net Exposure Percentage CreditDerivativeMaximumNetExposurePercentage	1
CY2020Q1	nrg	Number Of Wholesale Counterparties With Credit Risk Exposure NumberOfWholesaleCounterpartiesWithCreditRiskExposure	47000000	counterparty
CY2020Q1	nrg	Counterparty Credit Risk Exposure Percentage Threshold CounterpartyCreditRiskExposurePercentageThreshold	0.10
CY2020Q1	nrg	Estimated Counterparty Credit Risk Exposure To Certain Counterparties EstimatedCounterpartyCreditRiskExposureToCertainCounterparties	689000000	USD
CY2020Q1	nrg	Estimated Counterparty Credit Risk Exposure To Certain Counterparties Period EstimatedCounterpartyCreditRiskExposureToCertainCounterpartiesPeriod	P5Y
CY2020Q1	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	702000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	248000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	6000000	USD
CY2019Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	794000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	338000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2000000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	3000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	5000000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	112000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	113000000	USD
CY2020Q1	nrg	Reversal Previously Recognized Unrealized Gains Losses Settled Positions Economic Hedges ReversalPreviouslyRecognizedUnrealizedGainsLossesSettledPositionsEconomicHedges	-9000000	USD
CY2019Q1	nrg	Reversal Previously Recognized Unrealized Gains Losses Settled Positions Economic Hedges ReversalPreviouslyRecognizedUnrealizedGainsLossesSettledPositionsEconomicHedges	-19000000	USD
CY2020Q1	nrg	Reversal Previously Recognized Unrealized Gains Losses Acquiredas Partof Acquisition Economic Hedges ReversalPreviouslyRecognizedUnrealizedGainsLossesAcquiredasPartofAcquisitionEconomicHedges	-1000000	USD
CY2019Q1	nrg	Reversal Previously Recognized Unrealized Gains Losses Acquiredas Partof Acquisition Economic Hedges ReversalPreviouslyRecognizedUnrealizedGainsLossesAcquiredasPartofAcquisitionEconomicHedges	2000000	USD
CY2020Q1	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	34000000	USD
CY2019Q1	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	3000000	USD
CY2020Q1	nrg	Unrealized Gain Loss On Derivatives Mark To Market Economic Hedging Activities UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities	44000000	USD
CY2019Q1	nrg	Unrealized Gain Loss On Derivatives Mark To Market Economic Hedging Activities UnrealizedGainLossOnDerivativesMarkToMarketEconomicHedgingActivities	20000000	USD
CY2020Q1	nrg	Reversal Previously Unrecognized Unrealized Gains Losses Settled Positions Trading Activity ReversalPreviouslyUnrecognizedUnrealizedGainsLossesSettledPositionsTradingActivity	2000000	USD
CY2019Q1	nrg	Reversal Previously Unrecognized Unrealized Gains Losses Settled Positions Trading Activity ReversalPreviouslyUnrecognizedUnrealizedGainsLossesSettledPositionsTradingActivity	6000000	USD
CY2020Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	640000000	USD
CY2020Q1	nrg	Derivative Unrealized Gains On Open Positions Related To Trading Activity Net DerivativeUnrealizedGainsOnOpenPositionsRelatedToTradingActivityNet	13000000	USD
CY2019Q1	nrg	Derivative Unrealized Gains On Open Positions Related To Trading Activity Net DerivativeUnrealizedGainsOnOpenPositionsRelatedToTradingActivityNet	13000000	USD
CY2020Q1	nrg	Unrealized Gain Losson Derivatives Mark To Market Trading Activities UnrealizedGainLossonDerivativesMarkToMarketTradingActivities	11000000	USD
CY2019Q1	nrg	Unrealized Gain Losson Derivatives Mark To Market Trading Activities UnrealizedGainLossonDerivativesMarkToMarketTradingActivities	7000000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	55000000	USD
CY2019Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	27000000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	34000000	USD
CY2019Q1	us-gaap	Unrealized Gain Loss On Cash Flow Hedging Instruments UnrealizedGainLossOnCashFlowHedgingInstruments	3000000	USD
CY2020Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1000000	USD
CY2020Q1	us-gaap	Long Term Debt LongTermDebt	6592000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	6042000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	88000000	USD
CY2020Q1	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	63000000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	65000000	USD
CY2020Q1	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	82000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	86000000	USD
CY2020Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5807000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5803000000	USD
CY2020Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	248996189	shares
CY2020Q1	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1089103	shares
CY2020Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4461438	shares
CY2020Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	245623854	shares
CY2019Q4	nrg	Long Term Capital Allocation Target Allocation Cash Generated Allocated To Growth Investments Percentage LongTermCapitalAllocationTargetAllocationCashGeneratedAllocatedToGrowthInvestmentsPercentage	0.50
CY2019Q4	nrg	Long Term Capital Allocation Target Allocation Cash Generated Allocated Returned To Shareholders Percentage LongTermCapitalAllocationTargetAllocationCashGeneratedAllocatedReturnedToShareholdersPercentage	0.50
CY2019Q1	nrg	Employee Stock Purchase Plan Minimum Percentageof Compensation Eligible EmployeeStockPurchasePlanMinimumPercentageofCompensationEligible	0.01
CY2019Q1	nrg	Employee Stock Purchase Plan Maximum Percentage Of Compensation Eligible EmployeeStockPurchasePlanMaximumPercentageOfCompensationEligible	0.10
CY2019Q1	nrg	Employee Stock Purchase Plan Exercise Price As Percentage Of Fair Value EmployeeStockPurchasePlanExercisePriceAsPercentageOfFairValue	0.95
CY2019Q1	nrg	Employee Stock Purchase Plan Exercise Price As Percentage Of Fair Value EmployeeStockPurchasePlanExercisePriceAsPercentageOfFairValue	0.95
CY2020Q1	nrg	Common Stock Dividends Proposed Annual Amount Per Share CommonStockDividendsProposedAnnualAmountPerShare	1.20
CY2019	nrg	Common Stock Dividends Proposed Annual Amount Per Share CommonStockDividendsProposedAnnualAmountPerShare	0.12
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.30
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	248000000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	278000000	shares
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.73
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	121000000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	482000000	USD
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	248000000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	278000000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	249000000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	280000000	shares
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.72
CY2020Q1	us-gaap	Revenues Revenues	2019000000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	109000000	USD
CY2020Q1	us-gaap	Restructuring Costs RestructuringCosts	3000000	USD
CY2020Q1	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	6000000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-11000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	144000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2019Q1	us-gaap	Revenues Revenues	2165000000	USD
CY2019Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	85000000	USD
CY2019Q1	us-gaap	Restructuring Costs RestructuringCosts	13000000	USD
CY2019Q1	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	1000000	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-21000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94000000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	388000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	144000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98000000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23000000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.160
CY2019Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.041
CY2020Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	16000000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2000000	USD
CY2020Q1	nrg	Equity In Earnings Of Consolidated Subsidiaries EquityInEarningsOfConsolidatedSubsidiaries	0	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-11000000	USD
CY2020Q1	us-gaap	Impairment Of Investments ImpairmentOfInvestments	18000000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	27000000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	98000000	USD
CY2020Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-100000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	144000000	USD
CY2020Q1	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	15000000	USD
CY2019Q1	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	12000000	USD
CY2020Q1	us-gaap	Revenues Revenues	2019000000	USD
CY2020Q1	us-gaap	Cost Of Revenue CostOfRevenue	1457000000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	109000000	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	209000000	USD
CY2020Q1	us-gaap	Restructuring Costs RestructuringCosts	3000000	USD
CY2020Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	3000000	USD
CY2020Q1	us-gaap	Costs And Expenses CostsAndExpenses	1781000000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	6000000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	244000000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-15000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-15000000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	106000000	USD
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	759000000	USD
CY2020Q1	nrg	Funds Deposited By Counterparties FundsDepositedByCounterparties	51000000	USD
CY2020Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	8000000	USD
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	915000000	USD
CY2020Q1	us-gaap	Inventory Net InventoryNet	372000000	USD
CY2020Q1	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	884000000	USD
CY2020Q1	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	200000000	USD
CY2020Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	290000000	USD
CY2020Q1	us-gaap	Assets Current AssetsCurrent	3479000000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2573000000	USD
CY2020Q1	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2020Q1	us-gaap	Equity Method Investments EquityMethodInvestments	350000000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	446000000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	579000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	769000000	USD
CY2020Q1	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	702000000	USD
CY2020Q1	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	434000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3265000000	USD
CY2020Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	225000000	USD
CY2020Q1	us-gaap	Regulated Entity Other Assets Noncurrent RegulatedEntityOtherAssetsNoncurrent	6770000000	USD
CY2020Q1	us-gaap	Assets Assets	12822000000	USD
CY2020Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	640000000	USD
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	71000000	USD
CY2020Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	708000000	USD
CY2020Q1	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	832000000	USD
CY2020Q1	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	51000000	USD
CY2020Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	550000000	USD
CY2020Q1	us-gaap	Liabilities Current LiabilitiesCurrent	2852000000	USD
CY2020Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5807000000	USD
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	473000000	USD
CY2020Q1	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	303000000	USD
CY2020Q1	nrg	Nuclear Decommissioning Trust Fund Liability Noncurrent NuclearDecommissioningTrustFundLiabilityNoncurrent	390000000	USD
CY2020Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	370000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	15000000	USD
CY2020Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1076000000	USD
CY2020Q1	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8434000000	USD
CY2020Q1	us-gaap	Liabilities Liabilities	11286000000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1536000000	USD
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12822000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	121000000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-16000000	USD
CY2020Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	109000000	USD
CY2020Q1	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	11000000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	24000000	USD
CY2020Q1	us-gaap	Amortization Of Power Contracts Emission Credits AmortizationOfPowerContractsEmissionCredits	13000000	USD
CY2020Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	6000000	USD
CY2020Q1	nrg	Gains Losses On Extinguishment Of Debt Non Cash Portion GainsLossesOnExtinguishmentOfDebtNonCashPortion	-1000000	USD
CY2020Q1	nrg	Amortization Of Intangibles And Out Of Market Contracts AmortizationOfIntangiblesAndOutOfMarketContracts	7000000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	5000000	USD
CY2020Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	14000000	USD
CY2020Q1	nrg	Impairment Losses ImpairmentLosses	18000000	USD
CY2020Q1	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	46000000	USD
CY2020Q1	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	19000000	USD
CY2020Q1	nrg	Changes In Collateral Deposits Supporting Energy Risk Management Activities ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities	9000000	USD
CY2020Q1	nrg	Changes In Nuclear Decommissioning Trust Liability ChangesInNuclearDecommissioningTrustLiability	8000000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	99000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	208000000	USD
CY2020Q1	nrg	Intercompany Dividend Proceeds Investing IntercompanyDividendProceedsInvesting	0	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	66000000	USD
CY2020Q1	nrg	Payments For Proceeds From Intangible Assets PaymentsForProceedsFromIntangibleAssets	8000000	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	121000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	112000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	15000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68000000	USD
CY2020Q1	nrg	Intercompany Dividend Proceeds Financing IntercompanyDividendProceedsFinancing	0	USD
CY2020Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	74000000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	179000000	USD
CY2020Q1	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-2000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	59000000	USD
CY2020Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	60000000	USD
CY2020Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	552000000	USD
CY2020Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	293000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	433000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	385000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	818000000	USD
CY2019Q1	us-gaap	Revenues Revenues	2165000000	USD
CY2019Q1	us-gaap	Cost Of Revenue CostOfRevenue	1651000000	USD
CY2019Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	85000000	USD
CY2019Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	194000000	USD
CY2019Q1	us-gaap	Restructuring Costs RestructuringCosts	13000000	USD
CY2019Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2000000	USD
CY2019Q1	us-gaap	Costs And Expenses CostsAndExpenses	1945000000	USD
CY2019Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1000000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	221000000	USD
CY2019Q1	nrg	Equity In Earnings Of Consolidated Subsidiaries EquityInEarningsOfConsolidatedSubsidiaries	0	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-21000000	USD
CY2019Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12000000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	114000000	USD
CY2019Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-123000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98000000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94000000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	388000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	3000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2000000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	480000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	345000000	USD
CY2019Q4	nrg	Funds Deposited By Counterparties FundsDepositedByCounterparties	32000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	8000000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1025000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	383000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	860000000	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	190000000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	245000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	3088000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2593000000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	388000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	464000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	579000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	789000000	USD
CY2019Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	794000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	310000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3286000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	240000000	USD
CY2019Q4	us-gaap	Regulated Entity Other Assets Noncurrent RegulatedEntityOtherAssetsNoncurrent	6850000000	USD
CY2019Q4	us-gaap	Assets Assets	12531000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	88000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	73000000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	722000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	781000000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	32000000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	663000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2359000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5803000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	483000000	USD
CY2019Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	298000000	USD
CY2019Q4	nrg	Nuclear Decommissioning Trust Fund Liability Noncurrent NuclearDecommissioningTrustFundLiabilityNoncurrent	487000000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	322000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	17000000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1084000000	USD
CY2019Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8494000000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	10853000000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	20000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1658000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12531000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	482000000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	388000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94000000	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-21000000	USD
CY2019Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	85000000	USD
CY2019Q1	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	7000000	USD
CY2019Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	26000000	USD
CY2019Q1	us-gaap	Amortization Of Power Contracts Emission Credits AmortizationOfPowerContractsEmissionCredits	13000000	USD
CY2019Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7000000	USD
CY2019Q1	nrg	Amortization Of Intangibles And Out Of Market Contracts AmortizationOfIntangiblesAndOutOfMarketContracts	6000000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4000000	USD
CY2019Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-3000000	USD
CY2019Q1	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	15000000	USD
CY2019Q1	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-2000000	USD
CY2019Q1	nrg	Changes In Collateral Deposits Supporting Energy Risk Management Activities ChangesInCollateralDepositsSupportingEnergyRiskManagementActivities	-123000000	USD
CY2019Q1	nrg	Changes In Nuclear Decommissioning Trust Liability ChangesInNuclearDecommissioningTrustLiability	9000000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	234000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-99000000	USD
CY2019Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	8000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-91000000	USD
CY2019Q1	nrg	Intercompany Dividend Proceeds Investing IntercompanyDividendProceedsInvesting	0	USD
CY2019Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	16000000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	49000000	USD
CY2019Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	122000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	113000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	1313000000	USD
CY2019Q1	nrg	Investments In Proceeds From Sales Of Unconsolidated Affiliates InvestmentsInProceedsFromSalesOfUnconsolidatedAffiliates	4000000	USD
CY2019Q1	nrg	Net Contributions To Distributions From Discontinued Operations NetContributionsToDistributionsFromDiscontinuedOperations	-44000000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1198000000	USD
CY2019Q1	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-2000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1196000000	USD
CY2019Q1	nrg	Intercompany Dividend Proceeds Financing IntercompanyDividendProceedsFinancing	0	USD
CY2019Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8000000	USD
CY2019Q1	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	783000000	USD
CY2019Q1	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-1000000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2000000	USD
CY2019Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	37000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-827000000	USD
CY2019Q1	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	43000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-784000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	49000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	272000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	613000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	885000000	USD

Files In Submission

Name	View Source	Status
0001013871-20-000023-index-headers.html	Edgar Link	pending
0001013871-20-000023-index.html	Edgar Link	pending
0001013871-20-000023.txt	Edgar Link	pending
0001013871-20-000023-xbrl.zip	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nrg-20200331.htm	Edgar Link	pending
nrg-20200331.xsd	Edgar Link	pending
nrg-20200331_cal.xml	Edgar Link	unprocessable
nrg-20200331_def.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
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$NRG
NRG ENERGY, INC. Stock $nrg

2020 Q1 Form 10-Q Financial Statement

#000101387120000023 Filed on May 07, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NRG NRG ENERGY, INC. Stock $nrg

2020 Q1 Form 10-Q Financial Statement

#000101387120000023 Filed on May 07, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NRG
NRG ENERGY, INC. Stock $nrg