$POR
PORTLAND GENERAL ELECTRIC CO /OR/ Stock $por

$por Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000078497724000034 Filed on February 20, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$929.0M	$725.0M	$2.923B
YoY Change	24.2%	5.53%	10.43%
Cost Of Revenue	$504.0M	$375.0M	$1.564B
YoY Change	26.95%	1.08%	17.07%
Gross Profit	$425.0M	$350.0M	$1.359B
YoY Change	21.08%	10.76%	3.66%
Gross Profit Margin	45.75%	48.28%	46.49%
Selling, General & Admin	$95.00M	$79.00M	$341.0M
YoY Change	18.75%	-4.82%	0.29%
% of Gross Profit	22.35%	22.57%	25.09%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$121.0M	$118.0M	$458.0M
YoY Change	9.01%	10.28%	9.83%
% of Gross Profit	28.47%	33.71%	33.7%
Operating Expenses	$263.0M	$237.0M	$963.0M
YoY Change	12.39%	3.49%	5.36%
Operating Profit	$162.0M	$113.0M	$396.0M
YoY Change	38.46%	29.89%	-0.25%
Interest Expense	-$46.00M	-$39.00M	$173.0M
YoY Change	-204.55%	5.41%	10.9%
% of Operating Profit	-28.4%	-34.51%	43.69%
Other Income/Expense, Net	$6.000M	$9.000M	$50.00M
YoY Change	-60.0%	125.0%	61.29%
Pretax Income	$122.0M	$83.00M	$273.0M
YoY Change	38.64%	53.7%	0.37%
Income Tax	$13.00M	$15.00M	$45.00M
% Of Pretax Income	10.66%	18.07%	16.48%
Net Earnings	$109.0M	$68.00M	$228.0M
YoY Change	47.3%	33.33%	-2.15%
Net Earnings / Revenue	11.73%	9.38%	7.8%
Basic Earnings Per Share	$1.08		$2.33
Diluted Earnings Per Share	$1.08	$0.67	$2.33
COMMON SHARES
Basic Shares Outstanding	101.2M shares	101.1M shares	97.76M shares
Diluted Shares Outstanding	101.5M shares		97.95M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$241.0M	$5.000M	$5.000M
YoY Change	473.81%	-98.22%	-98.22%
Cash & Equivalents	$176.0M	$5.000M	$5.000M
Short-Term Investments	$65.00M	$92.00M	$92.00M
Other Short-Term Assets	$315.0M	$182.0M	$403.0M
YoY Change	35.78%	-63.45%	-7.57%
Inventory	$114.0M	$113.0M	$113.0M
Prepaid Expenses		$68.00M
Receivables	$412.0M	$414.0M	$414.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.082B	$935.0M	$935.0M
YoY Change	41.25%	-22.73%	-22.73%
LONG-TERM ASSETS
Property, Plant & Equipment	$9.663B	$9.546B	$9.546B
YoY Change	12.22%	12.77%	24.3%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$843.0M	$169.0M	$727.0M
YoY Change	288.48%	-27.78%	-4.59%
Total Long-Term Assets	$10.51B	$10.27B	$10.27B
YoY Change	11.94%	11.07%	11.07%
TOTAL ASSETS
Total Short-Term Assets	$1.082B	$935.0M	$935.0M
Total Long-Term Assets	$10.51B	$10.27B	$10.27B
Total Assets	$11.59B	$11.21B	$11.21B
YoY Change	14.16%	7.16%	7.16%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$289.0M	$347.0M	$347.0M
YoY Change	19.42%	-24.07%	-24.07%
Accrued Expenses	$227.0M	$355.0M	$355.0M
YoY Change	11.82%	5.65%	5.65%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$146.0M	$146.0M
YoY Change	-100.0%
Long-Term Debt Due	$103.0M	$80.00M	$100.0M
YoY Change		-69.23%	-64.29%
Total Short-Term Liabilities	$885.0M	$1.112B	$1.112B
YoY Change	17.84%	-25.67%	-25.67%
LONG-TERM LIABILITIES
Long-Term Debt	$4.638B	$3.905B	$4.194B
YoY Change	33.08%	15.33%	13.97%
Other Long-Term Liabilities	$2.072B	$99.00M	$2.095B
YoY Change	2104.26%	8.79%	1.45%
Total Long-Term Liabilities	$6.710B	$4.004B	$6.289B
YoY Change	87.48%	15.16%	9.47%
TOTAL LIABILITIES
Total Short-Term Liabilities	$885.0M	$1.112B	$1.112B
Total Long-Term Liabilities	$6.710B	$4.004B	$6.289B
Total Liabilities	$8.129B	$7.889B	$7.889B
YoY Change	15.49%	2.72%	2.72%
SHAREHOLDERS EQUITY
Retained Earnings	$1.635B	$1.574B
YoY Change	4.27%	2.61%
Common Stock	$1.828B	$1.750B
YoY Change	18.09%	40.11%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.459B	$3.319B	$3.319B
YoY Change
Total Liabilities & Shareholders Equity	$11.59B	$11.21B	$11.21B
YoY Change	14.16%	7.16%	7.16%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$109.0M	$68.00M	$228.0M
YoY Change	47.3%	33.33%	-2.15%
Depreciation, Depletion And Amortization	$121.0M	$118.0M	$458.0M
YoY Change	9.01%	10.28%	9.83%
Cash From Operating Activities	$175.0M	$89.00M	$420.0M
YoY Change	-548.72%	-11.0%	-37.69%
INVESTING ACTIVITIES
Capital Expenditures	$325.0M	$427.0M	$1.358B
YoY Change	18.61%	89.78%	77.28%
Acquisitions
YoY Change
Other Investing Activities	-$6.000M	$1.000M	$0.00
YoY Change	-250.0%	-120.0%	-100.0%
Cash From Investing Activities	-$331.0M	-$426.0M	-$1.358B
YoY Change	19.93%	85.22%	79.16%
FINANCING ACTIVITIES
Cash Dividend Paid	$48.00M		$179.0M
YoY Change	20.0%		13.29%
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net	$0.00		$260.0M
YoY Change	-100.0%
Cash From Financing Activities	327.0M	295.0M	$778.0M
YoY Change	101.85%	6.5%	294.92%
NET CHANGE
Cash From Operating Activities	175.0M	89.00M	$420.0M
Cash From Investing Activities	-331.0M	-426.0M	-$1.358B
Cash From Financing Activities	327.0M	295.0M	$778.0M
Net Change In Cash	171.0M	-42.00M	-$160.0M
YoY Change	-211.76%	-128.57%	-241.59%
FREE CASH FLOW
Cash From Operating Activities	$175.0M	$89.00M	$420.0M
Capital Expenditures	$325.0M	$427.0M	$1.358B
Free Cash Flow	-$150.0M	-$338.0M	-$938.0M
YoY Change	-52.08%	170.4%	919.57%

Facts In Submission

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CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	13000000	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	12000000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.6975
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	152000000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	244000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1000000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2707000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2000000	usd
CY2022	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	11000000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18000000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.7875
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	162000000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	233000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6000000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2779000000	usd
CY2023	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	485000000	usd
CY2023	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3000000	usd
CY2023	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	13000000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.8775
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	188000000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	228000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1000000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3319000000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	228000000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	233000000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	244000000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	458000000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	417000000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	404000000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8000000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6000000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5000000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	19000000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	14000000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	17000000	usd
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	5000000	usd
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	13000000	usd
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	24000000	usd
CY2023	por	Decoupling Mechanism Deferrals Net DecouplingMechanismDeferralsNet	-11000000	usd
CY2022	por	Decoupling Mechanism Deferrals Net DecouplingMechanismDeferralsNet	-11000000	usd
CY2021	por	Decoupling Mechanism Deferrals Net DecouplingMechanismDeferralsNet	29000000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	17000000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	15000000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	14000000	usd
CY2023	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-20000000	usd
CY2022	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	46000000	usd
CY2021	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	158000000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	24000000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	5000000	usd
CY2021	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	7000000	usd
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	24000000	usd
CY2022	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	0	usd
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	0	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-40000000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-40000000	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-23000000	usd
CY2023	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	29000000	usd
CY2022	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	66000000	usd
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	64000000	usd
CY2023	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	-24000000	usd
CY2022	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	80000000	usd
CY2021	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	29000000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-166000000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	157000000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	61000000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	135000000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-82000000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-58000000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	20000000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	22000000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	21000000	usd
CY2023	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-7000000	usd
CY2022	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-9000000	usd
CY2021	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-11000000	usd
CY2023	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	25000000	usd
CY2022	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	27000000	usd
CY2021	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	18000000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	16000000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	19000000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	19000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	420000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	674000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	532000000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1358000000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	766000000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	636000000	usd
CY2023	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	1000000	usd
CY2022	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	3000000	usd
CY2021	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	10000000	usd
CY2023	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1000000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	3000000	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	12000000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-8000000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	22000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1358000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-758000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-656000000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	600000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	360000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	400000000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	260000000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	160000000	usd
CY2023	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	485000000	usd
CY2022	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	0	usd
CY2021	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	0	usd
CY2023	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	usd
CY2022	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	usd
CY2021	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	200000000	usd
CY2023	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	usd
CY2022	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	usd
CY2021	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	350000000	usd
CY2023	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	146000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	0	usd
CY2023	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	usd
CY2022	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	25000000	usd
CY2021	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	usd
CY2023	us-gaap	Payments Of Dividends PaymentsOfDividends	179000000	usd
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	158000000	usd
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	150000000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18000000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12000000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-14000000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-12000000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-9000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	778000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	197000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-81000000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-160000000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	113000000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-205000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	165000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	52000000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	257000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	165000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	52000000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	136000000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	128000000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	120000000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	12000000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	37000000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	16000000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	212000000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	111000000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	87000000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	51000000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	42000000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	40000000	usd
CY2023Q4	por	Number Of Retail Customers NumberOfRetailCustomers	934000	retail_customers
CY2023Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	2842	shares
CY2023Q4	por	Number Of Union Employees NumberOfUnionEmployees	661	shares
CY2023Q4	por	Number Of Union Employees Subject To Agreement B NumberOfUnionEmployeesSubjectToAgreementB	65	shares
CY2023	us-gaap	Interest Income Interest Earning Asset InterestIncomeInterestEarningAsset	19000000	usd
CY2022	us-gaap	Interest Income Interest Earning Asset InterestIncomeInterestEarningAsset	8000000	usd
CY2021	us-gaap	Interest Income Interest Earning Asset InterestIncomeInterestEarningAsset	6000000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	0	usd
CY2022Q4	us-gaap	Other Investments OtherInvestments	150000000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	19000000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	14000000	usd
CY2023Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	92000000	usd
CY2022Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	116000000	usd
CY2022Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	33000000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.065
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.065
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.067
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	13000000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	7000000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	8000000	usd
CY2023	us-gaap	Excise Taxes Collected ExciseTaxesCollected	56000000	usd
CY2022	us-gaap	Excise Taxes Collected ExciseTaxesCollected	53000000	usd
CY2021	us-gaap	Excise Taxes Collected ExciseTaxesCollected	48000000	usd
CY2022	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	2205000000	usd
CY2021	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	2105000000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	17000000	usd
CY2023	por	Depreciation Expense Rate DepreciationExpenseRate	0.034
CY2023	por	Estimatedaverageservicelifehydroproductionplant Estimatedaverageservicelifehydroproductionplant	P95Y
CY2023	por	Estimatedaverageservicelifewindproductionplant Estimatedaverageservicelifewindproductionplant	P30Y
CY2023	us-gaap	Public Utilities Property Plant And Equipment Transmission Useful Life PublicUtilitiesPropertyPlantAndEquipmentTransmissionUsefulLife	P61Y
CY2023	us-gaap	Public Utilities Property Plant And Equipment Distribution Useful Life PublicUtilitiesPropertyPlantAndEquipmentDistributionUsefulLife	P51Y
CY2023	us-gaap	Public Utilities Property Plant And Equipment Common Useful Life PublicUtilitiesPropertyPlantAndEquipmentCommonUsefulLife	P16Y
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	558000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	499000000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61000000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	58000000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	58000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	70000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	58000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	50000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	45000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	24000000	usd
CY2023	por	Power Cost Deadband Lower Threshold PowerCostDeadbandLowerThreshold	15000000	usd
CY2023	por	Power Cost Deadband Upper Threshold PowerCostDeadbandUpperThreshold	30000000	usd
CY2023	us-gaap	Public Utilities Approved Return On Equity Percentage PublicUtilitiesApprovedReturnOnEquityPercentage	0.095
CY2022	us-gaap	Public Utilities Approved Return On Equity Percentage PublicUtilitiesApprovedReturnOnEquityPercentage	0.095
CY2023	us-gaap	Deferred Purchased Power Costs DeferredPurchasedPowerCosts	5000000	usd
CY2022	us-gaap	Deferred Purchased Power Costs DeferredPurchasedPowerCosts	23000000	usd
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	24000000	usd
CY2023	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	2439000000	usd
CY2023	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Change In Estimate Of Transaction Price ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice	11000000	usd
CY2022	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Change In Estimate Of Transaction Price ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice	11000000	usd
CY2021	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Change In Estimate Of Transaction Price ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice	-29000000	usd
CY2023	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	3000000	usd
CY2022	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	7000000	usd
CY2021	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	2000000	usd
CY2023	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	2447000000	usd
CY2022	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	2223000000	usd
CY2021	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	2078000000	usd
CY2023	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	418000000	usd
CY2022	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	363000000	usd
CY2021	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	255000000	usd
CY2023	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	58000000	usd
CY2022	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	61000000	usd
CY2021	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	63000000	usd
CY2023	us-gaap	Revenues Revenues	2923000000	usd
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CY2021	us-gaap	Revenues Revenues	2396000000	usd
CY2023	us-gaap	Gain On Derivative Instruments Pretax GainOnDerivativeInstrumentsPretax	185000000	usd
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CY2021	us-gaap	Gain On Derivative Instruments Pretax GainOnDerivativeInstrumentsPretax	63000000	usd
CY2023Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	138000000	usd
CY2022Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	131000000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12000000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26000000	usd
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16000000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5000000	usd
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CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	8000000	usd
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CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	25000000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12000000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26000000	usd
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CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	69000000	usd
CY2023Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	92000000	usd
CY2022Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	116000000	usd
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CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	48000000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	234000000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	74000000	usd
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CY2023Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	51000000	usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	42000000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	40000000	usd
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	31000000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	30000000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	29000000	usd
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CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	140000000	usd
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CY2022Q4	por	Other Current Liabilities Other OtherCurrentLiabilitiesOther	99000000	usd
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CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	641000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	4986000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Generation Or Processing PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing	4709000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	1144000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission PublicUtilitiesPropertyPlantAndEquipmentTransmission	1119000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	5252000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Distribution PublicUtilitiesPropertyPlantAndEquipmentDistribution	4813000000	usd
CY2023Q4	por	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	1014000000	usd
CY2022Q4	por	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	973000000	usd
CY2023Q4	por	Public Utilities Property Plant And Equipment Intangible PublicUtilitiesPropertyPlantAndEquipmentIntangible	933000000	usd
CY2022Q4	por	Public Utilities Property Plant And Equipment Intangible PublicUtilitiesPropertyPlantAndEquipmentIntangible	807000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	13329000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	12421000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	4757000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	4423000000	usd
CY2023Q4	por	Public Utilities Property Plant And Equipment Plant In Service Net PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet	8572000000	usd
CY2022Q4	por	Public Utilities Property Plant And Equipment Plant In Service Net PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet	7998000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	974000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	467000000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	9546000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	8465000000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	0	usd
CY2023Q4	us-gaap	Us Government Securities At Carrying Value USGovernmentSecuritiesAtCarryingValue	18000000	usd
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CY2023Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	6000000	usd
CY2023Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	6000000	usd
CY2023Q4	por	Fair Value Money Market Funds FairValueMoneyMarketFunds	2000000	usd
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CY2023Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	72000000	usd
CY2023Q4	por	Commodity Contract Liabilities Electricity CommodityContractLiabilitiesElectricity	73000000	usd
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CY2022Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	150000000	usd
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CY2022Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	11000000	usd
CY2022Q4	por	Fair Value Money Market Funds FairValueMoneyMarketFunds	1000000	usd
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CY2022Q4	us-gaap	Financial Instruments Owned At Fair Value FinancialInstrumentsOwnedAtFairValue	11000000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	583000000	usd
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CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	13000000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	31000000	usd
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CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	usd
CY2023Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	14000000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	3705000000	usd
CY2022Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	13000000	usd
CY2022Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	2984000000	usd
CY2023Q4	por	Commodity Contract Asset Current Electricity CommodityContractAssetCurrentElectricity	13000000	usd
CY2022Q4	por	Commodity Contract Asset Current Electricity CommodityContractAssetCurrentElectricity	112000000	usd
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CY2022Q4	por	Commodity Contract Asset Current Natural Gas CommodityContractAssetCurrentNaturalGas	201000000	usd
CY2023Q4	por	Current Derivative Assets CurrentDerivativeAssets	22000000	usd
CY2022Q4	por	Current Derivative Assets CurrentDerivativeAssets	313000000	usd
CY2023Q4	por	Commodity Contract Asset Noncurrent Electricity CommodityContractAssetNoncurrentElectricity	9000000	usd
CY2022Q4	por	Commodity Contract Asset Noncurrent Electricity CommodityContractAssetNoncurrentElectricity	44000000	usd
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CY2022Q4	por	Commodity Contract Asset Noncurrent Natural Gas CommodityContractAssetNoncurrentNaturalGas	30000000	usd
CY2023Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	11000000	usd
CY2022Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	74000000	usd
CY2023Q4	por	Derivative Assets Total DerivativeAssetsTotal	33000000	usd
CY2022Q4	por	Derivative Assets Total DerivativeAssetsTotal	387000000	usd
CY2023Q4	por	Commodity Contract Liability Current Electricity CommodityContractLiabilityCurrentElectricity	51000000	usd
CY2022Q4	por	Commodity Contract Liability Current Electricity CommodityContractLiabilityCurrentElectricity	93000000	usd
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CY2022Q4	por	Commodity Contract Liability Current Natural Gas CommodityContractLiabilityCurrentNaturalGas	25000000	usd
CY2023Q4	por	Current Derivative Liabilities CurrentDerivativeLiabilities	164000000	usd
CY2022Q4	por	Current Derivative Liabilities CurrentDerivativeLiabilities	118000000	usd
CY2023Q4	por	Commodity Contract Liability Noncurrent Electricity CommodityContractLiabilityNoncurrentElectricity	22000000	usd
CY2022Q4	por	Commodity Contract Liability Noncurrent Electricity CommodityContractLiabilityNoncurrentElectricity	53000000	usd
CY2023Q4	por	Commodity Contract Liability Noncurrent Natural Gas CommodityContractLiabilityNoncurrentNaturalGas	53000000	usd
CY2022Q4	por	Commodity Contract Liability Noncurrent Natural Gas CommodityContractLiabilityNoncurrentNaturalGas	22000000	usd
CY2023Q4	por	Noncurrent Derivative Liabilities NoncurrentDerivativeLiabilities	75000000	usd
CY2022Q4	por	Noncurrent Derivative Liabilities NoncurrentDerivativeLiabilities	75000000	usd
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CY2022Q4	por	Derivative Liabilities Total DerivativeLiabilitiesTotal	193000000	usd
CY2023Q4	por	Volume Related To Derivative Instruments Held At Balance Sheet Date Commodity Contracts Electricity VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity	3000000	mwh
CY2022Q4	por	Volume Related To Derivative Instruments Held At Balance Sheet Date Commodity Contracts Electricity VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity	6000000	mwh
CY2023Q4	por	Volume Related To Derivative Instruments At Balance Sheet Date Commodity Contracts Natural Gas VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas	213000000	mmbtu
CY2022Q4	por	Volume Related To Derivative Instruments At Balance Sheet Date Commodity Contracts Natural Gas VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas	211000000	mmbtu
CY2023Q4	por	Volume Relatedto Derivative Instruments Heldat Balance Sheet Date Foreign Currency VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency	20000000	cad
CY2022Q4	por	Volume Relatedto Derivative Instruments Heldat Balance Sheet Date Foreign Currency VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency	10000000	cad
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	28000000	usd
CY2023Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1000000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	5000000	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	usd
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CY2022	por	Realized And Unrealized Gains And Losses Net Commodity Contracts Natural Gas RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas	-388000000	usd
CY2021	por	Realized And Unrealized Gains And Losses Net Commodity Contracts Natural Gas RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas	-177000000	usd
CY2023	por	Realized And Unrealized Gains And Losses Net Commodity Contracts Foreign Currency RealizedAndUnrealizedGainsAndLossesNetCommodityContractsForeignCurrency	-1000000	usd
CY2022	por	Realized And Unrealized Gains And Losses Net Commodity Contracts Foreign Currency RealizedAndUnrealizedGainsAndLossesNetCommodityContractsForeignCurrency	1000000	usd
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CY2023Q4	us-gaap	Deposit Assets DepositAssets	26000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	17000000	usd
CY2023Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	12000000	usd
CY2023Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	5000000	usd
CY2023Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	501000000	usd
CY2023Q4	us-gaap	Regulatory Assets RegulatoryAssets	713000000	usd
CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	527000000	usd
CY2023Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1446000000	usd
CY2022Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1623000000	usd
CY2021	us-gaap	Deferred Purchased Power Costs DeferredPurchasedPowerCosts	62000000	usd
CY2023Q4	por	Trojan Decommissioning Activities TrojanDecommissioningActivities	174000000	usd
CY2022Q4	por	Trojan Decommissioning Activities TrojanDecommissioningActivities	170000000	usd
CY2023Q4	por	Asset Retirement Obligation Utility Plant AssetRetirementObligationUtilityPlant	85000000	usd
CY2022Q4	por	Asset Retirement Obligation Utility Plant AssetRetirementObligationUtilityPlant	86000000	usd
CY2023Q4	por	Asset Retirement Obligation Non Utility Property AssetRetirementObligationNonUtilityProperty	27000000	usd
CY2022Q4	por	Asset Retirement Obligation Non Utility Property AssetRetirementObligationNonUtilityProperty	33000000	usd
CY2023Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	286000000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	289000000	usd
CY2023Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	14000000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	32000000	usd
CY2023Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	272000000	usd
CY2022Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	257000000	usd
CY2023	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	9000000	usd
CY2023Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	7000000	usd
CY2023	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	12000000	usd
CY2023Q4	us-gaap	Recorded Third Party Environmental Recoveries Amount RecordedThirdPartyEnvironmentalRecoveriesAmount	9000000	usd
CY2022Q4	us-gaap	Recorded Third Party Environmental Recoveries Amount RecordedThirdPartyEnvironmentalRecoveriesAmount	6000000	usd
CY2023	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2000000	usd
CY2023	us-gaap	Asset Retirement Obligations Significant Changes AssetRetirementObligationsSignificantChanges	7 million
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	289000000	usd
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	269000000	usd
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	291000000	usd
CY2023	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2000000	usd
CY2022	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	1000000	usd
CY2021	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	usd
CY2023	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	25000000	usd
CY2022	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	27000000	usd
CY2021	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	18000000	usd
CY2023	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	11000000	usd
CY2022	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	10000000	usd
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	10000000	usd
CY2023	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	9000000	usd
CY2022	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	36000000	usd
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-14000000	usd
CY2023Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	286000000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	289000000	usd
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	269000000	usd
CY2023Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	750000000	usd
CY2023Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	850000000	usd
CY2023	por	Debt Instrument Covenant Ratio DebtInstrumentCovenantRatio	0.650
CY2023Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.562
CY2023	por	Commercial Paper Maximum Term CommercialPaperMaximumTerm	P270D
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	146000000	usd
CY2023Q4	us-gaap	Line Of Credit LineOfCredit	0	usd
CY2023Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	750000000	usd
CY2023Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	604000000	usd
CY2023Q4	por	Letterofcreditfacility Letterofcreditfacility	320000000	usd
CY2023Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	106000000	usd
CY2023	por	Ferc Authorized Short Term Debt Effective Through February62014 FercAuthorizedShortTermDebtEffectiveThroughFebruary62014	900000000	usd
CY2023	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	63000000	usd
CY2022	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	2000000	usd
CY2021	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	139000000	usd
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.055
CY2022Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.034
CY2021Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.009
CY2023	por	Short Term Debt Maximum Amount Outstanding During Year ShortTermDebtMaximumAmountOutstandingDuringYear	225000000	usd
CY2022	por	Short Term Debt Maximum Amount Outstanding During Year ShortTermDebtMaximumAmountOutstandingDuringYear	135000000	usd
CY2021	por	Short Term Debt Maximum Amount Outstanding During Year ShortTermDebtMaximumAmountOutstandingDuringYear	230000000	usd
CY2023Q4	por	First Mortgage Bonds Minimum Rate FirstMortgageBondsMinimumRate	0.0182
CY2023Q4	por	First Mortgage Bonds Maximum Rate FirstMortgageBondsMaximumRate	0.0688
CY2023Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0432
CY2022Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0409
CY2023Q4	us-gaap	Secured Debt SecuredDebt	3880000000	usd
CY2022Q4	us-gaap	Secured Debt SecuredDebt	3280000000	usd
CY2023Q4	us-gaap	Other Loans Payable Long Term OtherLoansPayableLongTerm	0	usd
CY2022Q4	us-gaap	Other Loans Payable Long Term OtherLoansPayableLongTerm	260000000	usd
CY2023Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	119000000	usd
CY2022Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	119000000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	3999000000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	3659000000	usd
CY2023Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	14000000	usd
CY2022Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	13000000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	80000000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	260000000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3905000000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3386000000	usd
CY2023Q3	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	500000000	usd
CY2023Q3	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	500000000	usd
CY2023Q4	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	200000000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	100000000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	260000000	usd
CY2023Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	119000000	usd
CY2023Q4	por	Pollution Control Revenue Bonds At2125 PollutionControlRevenueBondsAt2125	98000000	usd
CY2023Q4	por	Pollution Control Revenue Bonds At2375 PollutionControlRevenueBondsAt2375	21000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	80000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	160000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	100000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3659000000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	3999000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	2000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	5000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	5000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	5000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	5000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due In Rolling After Year Five FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive	64000000	usd
CY2023Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases LeveragedLeasesBalanceSheetInvestmentInLeveragedLeases	86000000	usd
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Imputed Interest UnrecordedUnconditionalPurchaseObligationImputedInterest	57000000	usd
CY2023Q4	us-gaap	Leveraged Leases Balance Sheet Investment In Leveraged Leases Net LeveragedLeasesBalanceSheetInvestmentInLeveragedLeasesNet	29000000	usd
CY2022	us-gaap	Pension Contributions PensionContributions	0	usd
CY2023	us-gaap	Pension Contributions PensionContributions	0	usd
CY2023Q4	us-gaap	Assets Held In Trust Noncurrent AssetsHeldInTrustNoncurrent	35000000	usd
CY2022Q4	us-gaap	Assets Held In Trust Noncurrent AssetsHeldInTrustNoncurrent	38000000	usd
CY2023Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	79000000	usd
CY2022Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	83000000	usd
CY2023Q4	por	Otherpostretirementdefinedbenefitplanliabilitycurrent Otherpostretirementdefinedbenefitplanliabilitycurrent	2000000	usd
CY2022Q4	por	Otherpostretirementdefinedbenefitplanliabilitycurrent Otherpostretirementdefinedbenefitplanliabilitycurrent	2000000	usd
CY2023	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1000000	usd
CY2023	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	11000000	usd
CY2022	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	13000000	usd
CY2023	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	11000000	usd
CY2022	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	13000000	usd
CY2023	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	15000000	usd
CY2023	por	Defined Benefit Plan Effect Of Decrease Of Rate Of Return On Plan Assets On Service And Interest Cost Components DefinedBenefitPlanEffectOfDecreaseOfRateOfReturnOnPlanAssetsOnServiceAndInterestCostComponents	3000000	usd
CY2023	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	82000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	55000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	55000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	56000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	53000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	260000000	usd
CY2023	por	Company Match Pre2009 Hire CompanyMatchPre2009Hire	0.06
CY2023	por	Company Match Post2008 Hire CompanyMatchPost2008Hire	0.05
CY2023	por	Company Contribution Percentage To401 K For Post2008 Hires CompanyContributionPercentageTo401KForPost2008Hires	0.05
CY2023	por	Company Contribution Percent To401 K For Bargaining Employees CompanyContributionPercentTo401KForBargainingEmployees	0.01
CY2023	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	31000000	usd
CY2022	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	29000000	usd
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	26000000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11000000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9000000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4000000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	26000000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24000000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14000000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	37000000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	33000000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18000000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4000000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1000000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4000000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7000000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	5000000	usd
CY2023	por	Deferred Income Tax Expense Footnote DeferredIncomeTaxExpenseFootnote	8000000	usd
CY2022	por	Deferred Income Tax Expense Footnote DeferredIncomeTaxExpenseFootnote	6000000	usd
CY2021	por	Deferred Income Tax Expense Footnote DeferredIncomeTaxExpenseFootnote	5000000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23000000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.095
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.128
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.130
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.086
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.088
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.089
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	-0.004
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.008
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	-0.002
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	-0.032
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.039
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.045
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.048
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.010
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.164
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.143
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.086
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	99000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	99000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	21000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	75000000	usd
CY2023Q4	por	Deferred Tax Assets Tax Credits Net Of Valuation Allowance DeferredTaxAssetsTaxCreditsNetOfValuationAllowance	73000000	usd
CY2022Q4	por	Deferred Tax Assets Tax Credits Net Of Valuation Allowance DeferredTaxAssetsTaxCreditsNetOfValuationAllowance	102000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	57000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	250000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	276000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	578000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	547000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	54000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	146000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	101000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	14000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	13000000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	738000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	715000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	488000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	439000000	usd
CY2023Q4	por	Tax Credit Carryforward Federal TaxCreditCarryforwardFederal	73000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023Q4	por	Employee Stock Purchase Plan Shares Authorized EmployeeStockPurchasePlanSharesAuthorized	625000	shares
CY2023	por	Employee Stock Purchase Plan Base Pay Threshold EmployeeStockPurchasePlanBasePayThreshold	0.10
CY2023	por	Employee Stock Purchase Plan Purchased Stock Value Limitation EmployeeStockPurchasePlanPurchasedStockValueLimitation	25000	usd
CY2023	por	Employee Stock Purchase Plan Share Purchase Limitation EmployeeStockPurchasePlanSharePurchaseLimitation	1500	shares
CY2023	por	Employee Stock Purchase Plan Purchase Price EmployeeStockPurchasePlanPurchasePrice	0.95
CY2023Q4	por	Employee Stock Purchase Plan Number Of Available Shares EmployeeStockPurchasePlanNumberOfAvailableShares	119546	shares
CY2023	por	Dividend Reinvestment And Direct Stock Purchase Plan Shares DividendReinvestmentAndDirectStockPurchasePlanShares	2500000	shares
CY2023Q4	por	Dividend Reinvestment And Direct Stock Purchase Plan Number Of Available Shares DividendReinvestmentAndDirectStockPurchasePlanNumberOfAvailableShares	2456710	shares
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M24D
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M24D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y10M24D
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.218
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.315
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.264
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.379
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.261
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	478396	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	48.00
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	318844	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	43.01
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	9754	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	48.35
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	212676	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	40.33
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	574810	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	48.07
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	271696	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	51.29
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	76913	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	49.48
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	190132	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	49.11
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	579461	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	49.23
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	421788	shares
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CY2023	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	CONTINGENCIES<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">PGE is subject to legal, regulatory, and environmental proceedings, investigations, and claims that arise from time to time in the ordinary course of its business. The Company may seek regulatory recovery of certain costs that are incurred in connection with such matters, although there can be no assurance that such recovery would be granted.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">PGE evaluates, on a quarterly basis, developments in such matters that could affect the amount of any accrual, as well as the likelihood of developments that would make a loss contingency both probable and reasonably estimable. The assessment as to whether a loss is probable or reasonably possible, and as to whether such loss or a range of such loss is estimable, often involves a series of complex judgments about future events. Management is often unable to estimate a reasonably possible loss, or a range of loss, particularly in cases in which: i) the damages sought are indeterminate or the basis for the damages claimed is not clear; ii) the proceedings are in the early stages; iii) discovery is not complete; iv) the matters involve novel or unsettled legal theories; v) significant facts are in dispute; vi) a large number of parties are represented (including circumstances in which it is uncertain how liability, if any, would be shared among multiple defendants); or vii) a wide range of potential outcomes exist. In such cases, there is considerable uncertainty regarding the timing or ultimate resolution, including any possible loss, fine, penalty, or business impact.</span></div><div><span><br/></span></div><div style="padding-left:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">EPA Investigation of Portland Harbor</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">An investigation by the United States Environmental Protection Agency (EPA) of a segment of the Willamette River known as Portland Harbor that began in 1997 revealed significant contamination of river sediments. The EPA subsequently included Portland Harbor on the National Priority List pursuant to the federal Comprehensive Environmental Response, Compensation, and Liability Act as a federal Superfund site. PGE has been included among more than one hundred Potentially Responsible Parties (PRPs) as it historically owned or operated property near the river. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">A Portland Harbor site remedial investigation was completed pursuant to an agreement between the EPA and several PRPs known as the Lower Willamette Group (LWG), which did not include PGE. The LWG funded the remedial investigation and feasibility study and stated that it had incurred $115 million in investigation-related </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">costs. The Company anticipates that such costs will ultimately be allocated to PRPs as a part of the allocation process for remediation costs of the EPA’s preferred remedy. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The EPA finalized the feasibility study, along with the remedial investigation, and the results provided the framework for the EPA to determine a clean-up remedy for Portland Harbor that was documented in a Record of Decision (ROD) issued in 2017. The ROD outlined the EPA’s selected remediation plan for clean-up of Portland Harbor that had an undiscounted estimated total cost of $1.7 billion, comprised of $1.2 billion related to remediation construction costs and $0.5 billion related to long-term operation and maintenance costs. Remediation construction costs were estimated to be incurred over a 13-year period, with long-term operation and maintenance costs estimated to be incurred over a 30-year period from the start of construction. Stakeholders have raised concerns that EPA’s cost estimates are understated, and PGE estimates undiscounted total remediation costs for Portland Harbor per the ROD could range from $1.9 billion to $3.5 billion. The EPA acknowledged the estimated costs are based on data that was outdated and that pre-remedial design sampling was necessary to gather updated baseline data to better refine the remedial design and estimated cost. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">A small group of PRPs performed pre-remedial design sampling to update baseline data and submitted the data in an updated evaluation report to the EPA for review. The evaluation report concluded that the conditions of the Portland Harbor have improved substantially over the past ten years. In response, the EPA indicated that while it would use the data to inform implementation of the ROD, the EPA’s conclusions remained materially unchanged. With the completion of pre-remedial design sampling, Portland Harbor is now in the remedial design phase, which consists of additional technical information and data collection to be used to design the expected remedial actions. Certain PRPs, not including PGE, have entered into consent agreements to perform remedial design and the EPA has indicated it will take the initial lead to perform remedial design on the remaining areas. The Company anticipates that remedial design costs will ultimately be allocated to PRPs as a part of the allocation process for remediation costs of the EPA’s preferred remedy. The entirety of Portland Harbor continues under an active engineering design phase. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">PGE continues to participate in a voluntary process to determine an appropriate allocation of costs amongst the PRPs. Significant uncertainties remain surrounding facts and circumstances that are integral to the determination of such an allocation percentage, including conclusion of remedial design, a final allocation methodology, and data with regard to property specific activities and history of ownership of sites within Portland Harbor that will inform the precise boundaries for clean-up. It is probable that PGE will share in a portion of the costs related to Portland Harbor. Based on the above facts and remaining uncertainties in the voluntary allocation process, PGE does not currently have sufficient information to reasonably estimate the amount, or range, of its potential liability or determine an allocation percentage that would represent PGE’s portion of the liability to clean-up Portland Harbor. However, the Company may obtain sufficient information, prior to the final determination of allocation percentages among PRPs, to develop a reasonable estimate, or range, of its potential liability that would require recording of the estimate, or low end of the range. The Company’s liability related to the cost of remediating Portland Harbor could be material to PGE’s financial position.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">In cases in which injuries to natural resources have occurred as a result of releases of hazardous substances, federal and state natural resource trustees may seek to recover for damages at such sites, which are referred to as Natural Resource Damages (NRD). The EPA does not manage NRD assessment activities but does provide claims information and coordination support to the NRD trustees. NRD assessment activities are typically conducted by a Council made up of the trustee entities for the site. The Portland Harbor NRD trustees consist of the National Oceanic and Atmospheric Administration, the U.S. Fish and Wildlife Service, the State, the Confederated Tribes of the Grand Ronde Community of Oregon, the Confederated Tribes of Siletz Indians, the Confederated Tribes of the Umatilla Indian Reservation, the Confederated Tribes of the Warm Springs Reservation of Oregon, and the Nez Perce Tribe.</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The NRD trustees may seek to negotiate legal settlements or take other legal actions against the parties responsible for the damages. Funds from such settlements must be used to restore injured resources and may also compensate the trustees for costs incurred in assessing the damages. PGE’s portion of NRD liabilities related to Portland Harbor will not have a material impact on its results of operations, financial position, or cash flows.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The impact of costs related to EPA and NRD liabilities on the Company’s results of operations is mitigated by the Portland Harbor Environmental Remediation Account (PHERA) mechanism. As approved by the OPUC in 2017, the PHERA allows the Company to defer estimated liabilities and recover incurred environmental expenditures related to Portland Harbor through a combination of third-party proceeds, including but not limited to insurance recoveries, and, if necessary, through customer prices. The mechanism established annual prudency reviews of environmental expenditures and third-party proceeds. Annual expenditures in excess of $6 million, excluding expenses related to contingent liabilities, are subject to an annual earnings test and would be ineligible for recovery to the extent PGE’s actual regulated return on equity exceeds its return on equity as authorized by the OPUC in PGE’s most recent GRC. PGE’s results of operations may be impacted to the extent such expenditures are deemed imprudent by the OPUC or ineligible per the prescribed earnings test. The Company plans to seek recovery of any costs resulting from EPA’s determination of liability for Portland Harbor through application of the PHERA. At this time, PGE is not recovering any Portland Harbor cost from the PHERA through customer prices.</span></div><div><span><br/></span></div><div style="padding-left:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">Governmental Investigations</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">In March, April, and May 2021, the Division of Enforcement of the Commodity Futures Trading Commission (the "CFTC"), the Division of Enforcement of the SEC, and the Division of Enforcement of the FERC, respectively, informed the Company they are conducting investigations arising out of the energy trading losses the Company previously announced in August 2020. The Company is cooperating with the CFTC, SEC, and FERC. Management cannot at this time predict the eventual scope or outcome of these matters.</span></div><div><span><br/></span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">Colstrip-Related Litigation</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The Company has a 20% ownership interest in Colstrip, which is located in the state of Montana and operated by one of the co-owners, Talen Montana, LLC (Talen). In May 2022, Talen’s parent company, Talen Energy Supply, LLC, filed for chapter 11 bankruptcy protection, although Colstrip continued to operate and generate electricity for PGE customers and others. Various business disagreements have arisen amongst the co-owners regarding interpretation of the Ownership and Operation (O&O) Agreement and other matters. An arbitration process has been initiated to address such business disagreements and has resulted in several legal proceedings. The arbitration along with other matters related to Colstrip, are summarized below.</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%"> </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:400;line-height:120%">Arbitration—I</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">n March 2021, co-owner NorthWestern Corporation (NorthWestern) initiated arbitration against all other co-owners of Colstrip to determine whether co-owners representing 55% or more of the ownership shares can vote to close one or both units of Colstrip, or, alternatively, whether unanimous consent is required. The O&O Agreement among the parties states that any dispute shall be submitted for resolution to a single arbitrator with appropriate expertise. The arbitration has been stayed through April 1, 2024, by agreement of the parties. PGE cannot predict the ultimate outcome of the arbitration process.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:400;line-height:120%">Richard Burnett; Colstrip Properties Inc., et al v. Talen Montana, LLC; PGE, et al—</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">In December 2020, the original claim was filed in the Montana Sixteenth Judicial District Court, Rosebud County, Cause No. CV-20-58. The plaintiffs allege they have suffered adverse effects from the defendants’ coal dust. In August 2021, the claim was amended to add PGE as a defendant. Plaintiffs are seeking economic damages, costs and disbursements, punitive damages, attorneys’ fees, and an injunction prohibiting defendants from allowing coal dust to blow onto plaintiffs’ properties, as determined by the Court. This case is currently set for trial on November 5, 2024. T</span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">he Company is unable to predict the outcome or estimate a range of reasonably possible loss in this matter.</span></div><div><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:400;line-height:120%">Westmoreland Mine Permits</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:400;line-height:120%">—</span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">Two lawsuits were commenced by the Montana Environmental Information Center, challenging certain permits relating to the operation of the Westmoreland Rosebud Mine, which provides coal to Colstrip. In the first, the Montana District Court for Rosebud County issued an order vacating a permit (AM4 Permit) for one area (Area B) of the mine. This case was appealed and on November 22, 2023, the Supreme Court of Montana reinstated the Montana District Court vacating the AM4 Permit and affirming the lower court order to return to the Board of Environmental Review for additional permit review considerations. In the second, the Montana Federal District Court issued findings and recommended that a decision approving expansion of the mine into a new area (Area F) should be vacated, but recommending the decision not take effect for 365 days from the date of a final order. On November 24, 2023, the Ninth Circuit Court of Appeals dismissed the appeal by Westmoreland for lack of appellate jurisdiction, and noted that the appropriate venue to raise issues will be the U.S. Office of Surface Mining during the remand process. PGE is not a party to either of these proceedings, but is continuing to monitor the progress of both lawsuits and assess the impact, if any, of the proceedings on Westmoreland’s ability to meet its contractual coal supply obligations.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%"> </span></div><div><span><br/></span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">Other Matters</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">PGE is subject to other regulatory, environmental, and legal proceedings, investigations, and claims that arise from time to time in the ordinary course of business, which may result in judgments against the Company. Although management currently believes that resolution of such known matters, individually and in the aggregate, will not have a material impact on its financial position, results of operations, or cash flows, these matters are subject to inherent uncertainties, and management’s view of these matters may change in the future.</span></div>
CY2023	por	Number Of Names Of Other Potentially Responsible Parties NumberOfNamesOfOtherPotentiallyResponsibleParties	100	name
CY2023	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	115000000	usd
CY2023Q4	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	1700000000	usd
CY2023Q4	us-gaap	Loss Contingency Range Of Possible Loss Portion Not Accrued LossContingencyRangeOfPossibleLossPortionNotAccrued	500000000	usd
CY2023Q4	por	Lower Range Of Costs LowerRangeOfCosts	1900000000	usd
CY2023Q4	por	Upper Range Of Costs UpperRangeOfCosts	3500000000	usd
CY2023	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	6000000	usd

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PORTLAND GENERAL ELECTRIC CO /OR/ Stock $por

2024 Q1 Form 10-K Financial Statement

#000078497724000034 Filed on February 20, 2024

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$POR PORTLAND GENERAL ELECTRIC CO /OR/ Stock $por

2024 Q1 Form 10-K Financial Statement

#000078497724000034 Filed on February 20, 2024

Income Statement

Balance Sheet

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Files In Submission

$POR
PORTLAND GENERAL ELECTRIC CO /OR/ Stock $por