10-K Filing

PORTLAND GENERAL ELECTRIC CO /OR/ CIK: 784977 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0000784977-21-000007`
Period End Date	20201231
Filing Date	20210219
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	por-20201231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 119 Income Statement 63 Cash Flow Statement 124 Stockholders Equity 29 Comprehensive Income 9

Balance Sheet 119 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$257.00M	USD	Point-in-time
Cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$119.00M	USD	Point-in-time
Cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$39.00M	USD	Point-in-time
Cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$30.00M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$253.00M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$271.00M	USD	Point-in-time
Preferred Stock, No Par Value	`PreferredStockNoParValue`	-	USD	Point-in-time
Preferred Stock, No Par Value	`PreferredStockNoParValue`	-	USD	Point-in-time
Preferred Stock, Shares Authorized	`PreferredStockSharesAuthorized`	30.00M	shares	Point-in-time
Preferred Stock, Shares Authorized	`PreferredStockSharesAuthorized`	30.00M	shares	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$56.00M	USD	Point-in-time
Preferred Stock, Shares Issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$49.00M	USD	Point-in-time
Preferred Stock, Shares Issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred Stock, Shares Outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred Stock, Shares Outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Fuel	`EnergyRelatedInventory`	$23.00M	USD	Point-in-time
Fuel	`EnergyRelatedInventory`	$40.00M	USD	Point-in-time
Common Stock, No Par Value	`CommonStockNoParValue`	-	USD	Point-in-time
Regulatory assets--current	`RegulatoryAssetsCurrent`	$17.00M	USD	Point-in-time
Regulatory assets--current	`RegulatoryAssetsCurrent`	$23.00M	USD	Point-in-time
Common Stock, No Par Value	`CommonStockNoParValue`	-	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$104.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$98.00M	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	160.00M	shares	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	160.00M	shares	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	89.54M	shares	Point-in-time
Total current assets	`AssetsCurrent`	$500.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$721.00M	USD	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	89.39M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	89.54M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	89.39M	shares	Point-in-time
In service	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$10.93B	USD	Point-in-time
In service	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$10.97B	USD	Point-in-time
Accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$4.09B	USD	Point-in-time
Accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$3.86B	USD	Point-in-time
In service, net	`PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet`	$6.83B	USD	Point-in-time
In service, net	`PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet`	$7.11B	USD	Point-in-time
Public Utilities, Property, Plant and Equipment, Net	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.16B	USD	Point-in-time
Public Utilities, Property, Plant and Equipment, Net	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.54B	USD	Point-in-time
Construction work-in-progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$328.00M	USD	Point-in-time
Construction work-in-progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$429.00M	USD	Point-in-time
Regulatory assets--noncurrent	`RegulatoryAssetsNoncurrent`	$483.00M	USD	Point-in-time
Regulatory assets--noncurrent	`RegulatoryAssetsNoncurrent`	$569.00M	USD	Point-in-time
Nuclear decommissioning trust	`DecommissioningTrustAssetsAmount`	$45.00M	USD	Point-in-time
Nuclear decommissioning trust	`DecommissioningTrustAssetsAmount`	$46.00M	USD	Point-in-time
Non-qualified benefit plan trust	`AssetsHeldInTrustNoncurrent`	$38.00M	USD	Point-in-time
Non-qualified benefit plan trust	`AssetsHeldInTrustNoncurrent`	$42.00M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$166.00M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$153.00M	USD	Point-in-time
Total assets	`Assets`	$8.39B	USD	Point-in-time
Total assets	`Assets`	$9.07B	USD	Point-in-time
Accounts payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$165.00M	USD	Point-in-time
Accounts payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$153.00M	USD	Point-in-time
Liabilities from price risk management activities-current	`DerivativeLiabilitiesCurrent`	$14.00M	USD	Point-in-time
Liabilities from price risk management activities-current	`DerivativeLiabilitiesCurrent`	$23.00M	USD	Point-in-time
Short-term Debt	`ShortTermBorrowings`	-	USD	Point-in-time
Short-term Debt	`ShortTermBorrowings`	-	USD	Point-in-time
Short-term Debt	`ShortTermBorrowings`	$150.00M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$160.00M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	-	USD	Point-in-time
Current portion of long-term debt	`FinanceLeaseLiabilityCurrent`	$16.00M	USD	Point-in-time
Current portion of long-term debt	`FinanceLeaseLiabilityCurrent`	$16.00M	USD	Point-in-time
Accrued expenses and other current liabilities	`OtherLiabilitiesCurrent`	$322.00M	USD	Point-in-time
Accrued expenses and other current liabilities	`OtherLiabilitiesCurrent`	$315.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$815.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$519.00M	USD	Point-in-time
Long-term debt, net of current portion	`LongTermDebtNoncurrent`	$2.60B	USD	Point-in-time
Long-term debt, net of current portion	`LongTermDebtNoncurrent`	$2.89B	USD	Point-in-time
Regulatory liabilities--noncurrent	`RegulatoryLiabilityNoncurrent`	$1.37B	USD	Point-in-time
Regulatory liabilities--noncurrent	`RegulatoryLiabilityNoncurrent`	$1.38B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$378.00M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$374.00M	USD	Point-in-time
Unfunded status of pension and postretirement plans	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$247.00M	USD	Point-in-time
Unfunded status of pension and postretirement plans	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$299.00M	USD	Point-in-time
Liabilities from price risk management activities--noncurrent	`DerivativeLiabilitiesNoncurrent`	$136.00M	USD	Point-in-time
Liabilities from price risk management activities--noncurrent	`DerivativeLiabilitiesNoncurrent`	$108.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$263.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$270.00M	USD	Point-in-time
Non-qualified benefit plan liabilities	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$103.00M	USD	Point-in-time
Non-qualified benefit plan liabilities	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$101.00M	USD	Point-in-time
Finance lease obligations, net of current portion	`FinanceLeaseLiabilityNoncurrent`	$135.00M	USD	Point-in-time
Finance lease obligations, net of current portion	`FinanceLeaseLiabilityNoncurrent`	$129.00M	USD	Point-in-time
Other noncurrent liabilities	`OtherLiabilitiesNoncurrent`	$77.00M	USD	Point-in-time
Other noncurrent liabilities	`OtherLiabilitiesNoncurrent`	$76.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$5.80B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.46B	USD	Point-in-time
Commitments and Contingencies (see notes)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies (see notes)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Common stock, no par value, 160,000,000 shares authorized; 89,537,331 and 89,387,124 shares issued and outstanding as of December 31, 2020 and 2019, respectively	`CommonStockValue`	$1.22B	USD	Point-in-time
Common stock, no par value, 160,000,000 shares authorized; 89,537,331 and 89,387,124 shares issued and outstanding as of December 31, 2020 and 2019, respectively	`CommonStockValue`	$1.23B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-10.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-11.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.39B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.38B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.51B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.61B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.59B	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$9.07B	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$8.39B	USD	Point-in-time
Preferred Stock, Shares Outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred Stock, Shares Outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred Stock, Shares Issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred Stock, Shares Issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred Stock, Shares Authorized	`PreferredStockSharesAuthorized`	30.00M	shares	Point-in-time
Preferred Stock, Shares Authorized	`PreferredStockSharesAuthorized`	30.00M	shares	Point-in-time
Preferred Stock, No Par Value	`PreferredStockNoParValue`	-	USD	Point-in-time
Preferred Stock, No Par Value	`PreferredStockNoParValue`	-	USD	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	89.54M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	89.39M	shares	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	89.54M	shares	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	89.39M	shares	Point-in-time
Common Stock, No Par Value	`CommonStockNoParValue`	-	USD	Point-in-time
Common Stock, No Par Value	`CommonStockNoParValue`	-	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	160.00M	shares	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	160.00M	shares	Point-in-time

Income Statement 63 line items

Line Item	Tag	Value	Unit	Period
Revenues, net	`RevenueFromContractWithCustomerIncludingAssessedTax`	$1.99B	USD	Annual
Revenues, net	`RevenueFromContractWithCustomerIncludingAssessedTax`	$2.12B	USD	Annual
Revenues, net	`RevenueFromContractWithCustomerIncludingAssessedTax`	$2.15B	USD	Annual
Alternative revenue programs, net of amortization	`ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice`	$-6.00M	USD	Annual
Alternative revenue programs, net of amortization	`ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice`	$2.00M	USD	Annual
Alternative revenue programs, net of amortization	`ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice`	$3.00M	USD	Annual
Total Revenues	`Revenues`	$2.12B	USD	Annual
Total Revenues	`Revenues`	$2.15B	USD	Annual
Total Revenues	`Revenues`	$1.99B	USD	Annual
Purchased power and fuel	`UtilitiesOperatingExpensePurchasedPower`	$571.00M	USD	Annual
Purchased power and fuel	`UtilitiesOperatingExpensePurchasedPower`	$708.00M	USD	Annual
Purchased power and fuel	`UtilitiesOperatingExpensePurchasedPower`	$614.00M	USD	Annual
Generation, transmission and distribution	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$292.00M	USD	Annual
Generation, transmission and distribution	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$323.00M	USD	Annual
Generation, transmission and distribution	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$293.00M	USD	Annual
Administrative and other	`GeneralAndAdministrativeExpense`	$290.00M	USD	Annual
Administrative and other	`GeneralAndAdministrativeExpense`	$271.00M	USD	Annual
Administrative and other	`GeneralAndAdministrativeExpense`	$283.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$454.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$409.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$382.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$134.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$129.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$138.00M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.88B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.65B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.77B	USD	Annual
Income from operations	`OperatingIncomeLoss`	$346.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$353.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$269.00M	USD	Annual
Interest expense, net	`InterestExpense`	$128.00M	USD	Annual
Interest expense, net	`InterestExpense`	$124.00M	USD	Annual
Interest expense, net	`InterestExpense`	$136.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$10.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$16.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.00M	USD	Annual
Miscellaneous income, net	`OtherNonoperatingIncomeExpense`	$6.00M	USD	Annual
Miscellaneous income, net	`OtherNonoperatingIncomeExpense`	$6.00M	USD	Annual
Miscellaneous income, net	`OtherNonoperatingIncomeExpense`	$-4.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$16.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$22.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$7.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$241.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$155.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$229.00M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$17.00M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	-	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$27.00M	USD	Annual
Net income	`ProfitLoss`	$155.00M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$214.00M	USD	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	89.22M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	89.48M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	89.35M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	89.35M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	89.64M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	89.56M	shares	Annual
Basic	`EarningsPerShareBasic`	$2.38	USD	Annual
Basic	`EarningsPerShareBasic`	$1.73	USD	Annual
Basic	`EarningsPerShareBasic`	$2.39	USD	Annual
Diluted	`EarningsPerShareDiluted`	$2.37	USD	Annual
Diluted	`EarningsPerShareDiluted`	$2.39	USD	Annual
Diluted	`EarningsPerShareDiluted`	$1.72	USD	Annual

Cash Flow Statement 124 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$155.00M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$214.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$454.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$409.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$382.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-23.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-17.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$6.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$10.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$16.00M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.00M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$21.00M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$30.00M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$22.00M	USD	Annual
Decoupling mechanism deferrals, net of amortization	`DecouplingMechanismDeferralsNet`	$6.00M	USD	Annual
Decoupling mechanism deferrals, net of amortization	`DecouplingMechanismDeferralsNet`	$-2.00M	USD	Annual
Decoupling mechanism deferrals, net of amortization	`DecouplingMechanismDeferralsNet`	$-2.00M	USD	Annual
(Amortization) Deferral of net benefits due to Tax Reform	`TaxAdjustmentsSettlementsAndUnusualProvisions`	$-23.00M	USD	Annual
(Amortization) Deferral of net benefits due to Tax Reform	`TaxAdjustmentsSettlementsAndUnusualProvisions`	$-23.00M	USD	Annual
(Amortization) Deferral of net benefits due to Tax Reform	`TaxAdjustmentsSettlementsAndUnusualProvisions`	$45.00M	USD	Annual
Share-based Payment Arrangement, Noncash Expense	`ShareBasedCompensation`	$5.00M	USD	Annual
Share-based Payment Arrangement, Noncash Expense	`ShareBasedCompensation`	$9.00M	USD	Annual
Share-based Payment Arrangement, Noncash Expense	`ShareBasedCompensation`	$11.00M	USD	Annual
Other non-cash income and expenses, net	`OtherNoncashIncomeExpense`	$-22.00M	USD	Annual
Other non-cash income and expenses, net	`OtherNoncashIncomeExpense`	$-34.00M	USD	Annual
Other non-cash income and expenses, net	`OtherNoncashIncomeExpense`	$-16.00M	USD	Annual
Decrease (increase) in receivables and unbilled revenues	`IncreaseDecreaseInReceivables`	$-30.00M	USD	Annual
Decrease (increase) in receivables and unbilled revenues	`IncreaseDecreaseInReceivables`	$29.00M	USD	Annual
Decrease (increase) in receivables and unbilled revenues	`IncreaseDecreaseInReceivables`	$24.00M	USD	Annual
(Increase) in margin deposits	`IncreaseDecreaseInMarginDepositsOutstanding`	-	USD	Annual
(Increase) in margin deposits	`IncreaseDecreaseInMarginDepositsOutstanding`	$-8.00M	USD	Annual
(Increase) in margin deposits	`IncreaseDecreaseInMarginDepositsOutstanding`	$5.00M	USD	Annual
(Decrease) increase in payables and accrued liabilities	`IncreaseDecreaseInAccountsPayable`	$51.00M	USD	Annual
(Decrease) increase in payables and accrued liabilities	`IncreaseDecreaseInAccountsPayable`	$-16.00M	USD	Annual
(Decrease) increase in payables and accrued liabilities	`IncreaseDecreaseInAccountsPayable`	$26.00M	USD	Annual
Other working capital items, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-17.00M	USD	Annual
Other working capital items, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$11.00M	USD	Annual
Other working capital items, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$12.00M	USD	Annual
Contribution to non-qualified employee benefit trust	`IncreaseDecreaseInDeferredCompensation`	$-11.00M	USD	Annual
Contribution to non-qualified employee benefit trust	`IncreaseDecreaseInDeferredCompensation`	$-11.00M	USD	Annual
Contribution to non-qualified employee benefit trust	`IncreaseDecreaseInDeferredCompensation`	$-11.00M	USD	Annual
Contribution to pension and other postretirement plans	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-12.00M	USD	Annual
Contribution to pension and other postretirement plans	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-2.00M	USD	Annual
Contribution to pension and other postretirement plans	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-65.00M	USD	Annual
Asset Retirement Obligation, Cash Paid to Settle	`AssetRetirementObligationCashPaidToSettle`	$9.00M	USD	Annual
Asset Retirement Obligation, Cash Paid to Settle	`AssetRetirementObligationCashPaidToSettle`	$18.00M	USD	Annual
Asset Retirement Obligation, Cash Paid to Settle	`AssetRetirementObligationCashPaidToSettle`	$5.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingAssets`	$29.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingAssets`	$37.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingAssets`	$8.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$546.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$630.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$567.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$784.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$606.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$595.00M	USD	Annual
Purchases of nuclear decommissioning trust securities	`PaymentsToInvestInDecommissioningFund`	$6.00M	USD	Annual
Purchases of nuclear decommissioning trust securities	`PaymentsToInvestInDecommissioningFund`	$8.00M	USD	Annual
Purchases of nuclear decommissioning trust securities	`PaymentsToInvestInDecommissioningFund`	$12.00M	USD	Annual
Sales of nuclear decommissioning trust securities	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$15.00M	USD	Annual
Sales of nuclear decommissioning trust securities	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$13.00M	USD	Annual
Sales of nuclear decommissioning trust securities	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$9.00M	USD	Annual
Proceeds from Carty Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	$120.00M	USD	Annual
Proceeds from Carty Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	-	USD	Annual
Proceeds from Carty Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	-	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$6.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-604.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-787.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-471.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$549.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$470.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$75.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$230.00M	USD	Point-in-time
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$200.00M	USD	Point-in-time
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$98.00M	USD	Annual
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$24.00M	USD	Annual
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$350.00M	USD	Annual
Debt extinguishment costs	`PaymentsOfDebtExtinguishmentCosts`	$2.00M	USD	Annual
Debt extinguishment costs	`PaymentsOfDebtExtinguishmentCosts`	$9.00M	USD	Annual
Debt extinguishment costs	`PaymentsOfDebtExtinguishmentCosts`	-	USD	Annual
Proceeds from Short-term Debt	`ProceedsFromShortTermDebt`	$275.00M	USD	Annual
Proceeds from Short-term Debt	`ProceedsFromShortTermDebt`	-	USD	Annual
Proceeds from Short-term Debt	`ProceedsFromShortTermDebt`	-	USD	Annual
Repayments of Short-term Debt	`RepaymentsOfShortTermDebt`	-	USD	Annual
Repayments of Short-term Debt	`RepaymentsOfShortTermDebt`	-	USD	Annual
Repayments of Short-term Debt	`RepaymentsOfShortTermDebt`	$125.00M	USD	Annual
Dividends paid	`PaymentsOfDividends`	$125.00M	USD	Annual
Dividends paid	`PaymentsOfDividends`	$140.00M	USD	Annual
Dividends paid	`PaymentsOfDividends`	$134.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-5.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-8.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-12.00M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-31.00M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$447.00M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-79.00M	USD	Annual
(Decrease) increase in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-89.00M	USD	Annual
(Decrease) increase in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$80.00M	USD	Annual
(Decrease) increase in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$227.00M	USD	Annual
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$257.00M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$119.00M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$39.00M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$30.00M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$257.00M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$119.00M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$39.00M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$30.00M	USD	Point-in-time
Cash paid for interest, net of amounts capitalized	`InterestPaidNet`	$113.00M	USD	Annual
Cash paid for interest, net of amounts capitalized	`InterestPaidNet`	$117.00M	USD	Annual
Cash paid for interest, net of amounts capitalized	`InterestPaidNet`	$116.00M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaid`	$17.00M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaid`	$33.00M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaid`	$25.00M	USD	Annual
Accrued capital additions	`CapitalExpendituresIncurredButNotYetPaid`	$72.00M	USD	Annual
Accrued capital additions	`CapitalExpendituresIncurredButNotYetPaid`	$61.00M	USD	Annual
Accrued capital additions	`CapitalExpendituresIncurredButNotYetPaid`	$76.00M	USD	Annual
Accrued dividends payable	`DividendsPayableCurrentAndNoncurrent`	$34.00M	USD	Point-in-time
Accrued dividends payable	`DividendsPayableCurrentAndNoncurrent`	$38.00M	USD	Point-in-time
Accrued dividends payable	`DividendsPayableCurrentAndNoncurrent`	$36.00M	USD	Point-in-time
Assets obtained under leasing arrangements	`CapitalLeaseObligationsIncurred`	-	USD	Annual
Assets obtained under leasing arrangements	`CapitalLeaseObligationsIncurred`	$210.00M	USD	Annual
Assets obtained under leasing arrangements	`CapitalLeaseObligationsIncurred`	$24.00M	USD	Annual

Stockholders Equity 29 line items

Line Item	Tag	Value	Unit	Period
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.52	USD	Annual
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.58	USD	Annual
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.43	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.51B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.61B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.59B	USD	Point-in-time
Proceeds from issuance of shares pursuant to equity-based plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$1.00M	USD	Annual
Proceeds from issuance of shares pursuant to equity-based plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$1.00M	USD	Annual
Proceeds from issuance of shares pursuant to equity-based plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$2.00M	USD	Annual
Stock-based compensation	`StockGrantedDuringPeriodValueSharebasedCompensation`	$9.00M	USD	Annual
Stock-based compensation	`StockGrantedDuringPeriodValueSharebasedCompensation`	$4.00M	USD	Annual
Stock-based compensation	`StockGrantedDuringPeriodValueSharebasedCompensation`	$7.00M	USD	Annual
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.52	USD	Annual
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.58	USD	Annual
Common Stock, Dividends, Per Share, Declared	`CommonStockDividendsPerShareDeclared`	$1.43	USD	Annual
Dividends declared	`DividendsCommonStock`	$128.00M	USD	Annual
Dividends declared	`DividendsCommonStock`	$136.00M	USD	Annual
Dividends declared	`DividendsCommonStock`	$143.00M	USD	Annual
Net income	`ProfitLoss`	$155.00M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$214.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-1.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-1.00M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.51B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.61B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.59B	USD	Point-in-time

Comprehensive Income 9 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$155.00M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$214.00M	USD	Annual
Other comprehensive income (loss)- Change in compensation retirement benefits liability and amortization, net of taxes of $1 million in 2020 and immaterial amounts in 2019 and 2018	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-1.00M	USD	Annual
Other comprehensive income (loss)- Change in compensation retirement benefits liability and amortization, net of taxes of $1 million in 2020 and immaterial amounts in 2019 and 2018	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-1.00M	USD	Annual
Other comprehensive income (loss)- Change in compensation retirement benefits liability and amortization, net of taxes of $1 million in 2020 and immaterial amounts in 2019 and 2018	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$1.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$213.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$213.00M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.