$AVA
AVISTA CORP Stock $ava

$ava Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000095017024017421 Filed on February 21, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$609.4M	$517.4M	$1.752B
YoY Change	28.4%	1.41%	2.42%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin			$29.72M
YoY Change			353.59%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$67.93M	$67.11M	$265.4M
YoY Change	4.16%	4.56%	4.85%
% of Gross Profit
Operating Expenses	$508.3M	$418.2M	$1.494B
YoY Change	27.7%	-6.36%	-1.72%
Operating Profit	$101.1M		$257.7M
YoY Change	32.0%		35.45%
Interest Expense	-$36.60M	-$35.54M	-$128.2M
YoY Change	5.13%	14.21%	11.53%
% of Operating Profit	-36.2%		-49.76%
Other Income/Expense, Net	$9.285M	$3.070M	$19.53M
YoY Change	44.42%	-92.32%	-68.87%
Pretax Income	$73.80M	$66.73M	$137.6M
YoY Change	53.06%	-7.89%	-0.32%
Income Tax	$2.306M	-$17.41M	-$33.63M
% Of Pretax Income	3.12%	-26.08%	-24.45%
Net Earnings	$71.50M	$84.14M	$171.2M
YoY Change	30.36%	7.93%	10.31%
Net Earnings / Revenue	11.73%	16.26%	9.77%
Basic Earnings Per Share	$0.91		$2.24
Diluted Earnings Per Share	$0.91	$1.08	$2.24
COMMON SHARES
Basic Shares Outstanding	78.16M	77.37M	76.40M
Diluted Shares Outstanding	78.21M		76.50M

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$12.27M	$35.00M	$35.00M
YoY Change	15.84%	160.67%	160.67%
Cash & Equivalents	$12.27M	$35.00M	$35.00M
Short-Term Investments
Other Short-Term Assets	$83.40M	$103.8M	$220.9M
YoY Change	-28.51%	-31.34%	-29.7%
Inventory	$163.7M	$160.0M	$160.0M
Prepaid Expenses	$56.22M	$52.75M
Receivables	$218.0M	$216.7M	$216.7M
Other Receivables	$8.727M	$29.23M	$29.23M
Total Short-Term Assets	$561.9M	$661.8M	$661.8M
YoY Change	-14.3%	-8.31%	-8.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.885B	$5.838B	$5.838B
YoY Change	5.46%	5.13%	5.13%
Goodwill	$52.43M	$52.40M
YoY Change	0.0%	-0.05%
Intangibles
YoY Change
Long-Term Investments	$183.8M	$78.51M	$180.6M
YoY Change	-16.24%	11.85%	-15.33%
Other Assets	$16.13M	$15.75M	$954.4M
YoY Change	2.62%	3.48%	11.13%
Total Long-Term Assets	$7.087B	$7.041B	$7.041B
YoY Change	5.18%	5.15%	5.15%
TOTAL ASSETS
Total Short-Term Assets	$561.9M	$661.8M	$661.8M
Total Long-Term Assets	$7.087B	$7.041B	$7.041B
Total Assets	$7.649B	$7.702B	$7.702B
YoY Change	3.45%	3.84%	3.84%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$102.9M	$143.3M	$143.3M
YoY Change	-8.33%	-29.41%	-29.41%
Accrued Expenses	$44.33M	$54.02M	$106.1M
YoY Change	28.21%	8.71%	14.03%
Deferred Revenue
YoY Change
Short-Term Debt	$212.2M	$349.0M	$349.0M
YoY Change	-8.16%	-24.62%	-24.62%
Long-Term Debt Due	$15.00M	$15.00M	$18.40M
YoY Change	11.11%	11.11%	9.95%
Total Short-Term Liabilities	$580.3M	$775.2M	$775.2M
YoY Change	-4.02%	-19.63%	-19.63%
LONG-TERM LIABILITIES
Long-Term Debt	$2.688B	$2.606B	$2.606B
YoY Change	6.23%	14.25%	9.72%
Other Long-Term Liabilities	$233.4M	$210.2M	$1.089B
YoY Change	19.8%	19.55%	4.82%
Total Long-Term Liabilities	$233.4M	$210.2M	$3.695B
YoY Change	-91.44%	-91.44%	8.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$580.3M	$775.2M	$775.2M
Total Long-Term Liabilities	$233.4M	$210.2M	$3.695B
Total Liabilities	$5.128B	$5.217B	$5.217B
YoY Change	2.39%	2.65%	2.65%
SHAREHOLDERS EQUITY
Retained Earnings	$875.7M	$841.4M
YoY Change	5.28%	3.67%
Common Stock	$1.645B	$1.644B
YoY Change	5.76%	7.81%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.521B	$2.485B	$2.485B
YoY Change
Total Liabilities & Shareholders Equity	$7.649B	$7.702B	$7.702B
YoY Change	3.45%	3.84%	3.84%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$71.50M	$84.14M	$171.2M
YoY Change	30.36%	7.93%	10.31%
Depreciation, Depletion And Amortization	$67.93M	$67.11M	$265.4M
YoY Change	4.16%	4.56%	4.85%
Cash From Operating Activities	$190.1M	$53.78M	$447.1M
YoY Change	101.76%	-162.39%	259.95%
INVESTING ACTIVITIES
Capital Expenditures	$118.7M	$139.3M	$498.6M
YoY Change	18.13%	15.45%	10.32%
Acquisitions
YoY Change
Other Investing Activities	-$2.385M	-$2.452M	-$1.853M
YoY Change	360.42%	-423.06%	-55.28%
Cash From Investing Activities	-$118.1M	-$141.8M	-$510.4M
YoY Change	11.15%	18.23%	10.9%
FINANCING ACTIVITIES
Cash Dividend Paid	$37.82M		$140.9M
YoY Change	7.96%		9.19%
Common Stock Issuance & Retirement, Net			$112.3M
YoY Change			-18.51%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-94.78M	114.4M	84.89M
YoY Change	-1132.98%	-44.26%	-74.06%
NET CHANGE
Cash From Operating Activities	190.1M	53.78M	447.1M
Cash From Investing Activities	-118.1M	-141.8M	-510.4M
Cash From Financing Activities	-94.78M	114.4M	84.89M
Net Change In Cash	-22.73M	26.38M	21.58M
YoY Change	702.58%	-2920.86%	-346.85%
FREE CASH FLOW
Cash From Operating Activities	$190.1M	$53.78M	$447.1M
Capital Expenditures	$118.7M	$139.3M	$498.6M
Free Cash Flow	$71.44M	-$85.56M	-$51.56M
YoY Change	-1244.11%	-58.65%	-84.27%

Facts In Submission

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CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-03701
CY2023	dei	Entity Registrant Name EntityRegistrantName	AVISTA CORPORATION
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	91-0462470
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	1411 East Mission Avenue
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Spokane
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	99202-2600
CY2023	dei	City Area Code CityAreaCode	509
CY2023	dei	Local Phone Number LocalPhoneNumber	489-0500
CY2023	dei	Security12b Title Security12bTitle	Common Stock
CY2023	dei	Trading Symbol TradingSymbol	AVA
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
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CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	3005104706
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	78161596
CY2023	dei	Auditor Firm AuditorFirmId	34
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	Portland, Oregon
CY2023	ava	Regulated Revenues Excluding Alternative Revenue Programs RegulatedRevenuesExcludingAlternativeRevenuePrograms	1746097000
CY2022	ava	Regulated Revenues Excluding Alternative Revenue Programs RegulatedRevenuesExcludingAlternativeRevenuePrograms	1742876000
CY2021	ava	Regulated Revenues Excluding Alternative Revenue Programs RegulatedRevenuesExcludingAlternativeRevenuePrograms	1445000000
CY2023	ava	Revenue From Alternative Revenue Programs RevenueFromAlternativeRevenuePrograms	4899000
CY2022	ava	Revenue From Alternative Revenue Programs RevenueFromAlternativeRevenuePrograms	-33357000
CY2021	ava	Revenue From Alternative Revenue Programs RevenueFromAlternativeRevenuePrograms	-6635000
CY2023	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	1750996000
CY2022	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	1709519000
CY2021	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	1438365000
CY2023	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	558000
CY2022	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	688000
CY2021	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	571000
CY2023	us-gaap	Revenues Revenues	1751554000
CY2022	us-gaap	Revenues Revenues	1710207000
CY2021	us-gaap	Revenues Revenues	1438936000
CY2023	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	702372000
CY2022	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	735862000
CY2021	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	497123000
CY2023	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	413608000
CY2022	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	405165000
CY2021	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	366125000
CY2023	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	265329000
CY2022	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	253017000
CY2021	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	231915000
CY2023	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	109715000
CY2022	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	114193000
CY2021	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	109353000
CY2023	ava	Non Utility Operating Expense NonUtilityOperatingExpense	2840000
CY2022	ava	Non Utility Operating Expense NonUtilityOperatingExpense	11728000
CY2021	ava	Non Utility Operating Expense NonUtilityOperatingExpense	6188000
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	1493864000
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	1519965000
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	1210704000
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	257690000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	190242000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	228232000
CY2023	ava	Interest Expense Excluding Interest Expense To Related Party InterestExpenseExcludingInterestExpenseToRelatedParty	140795000
CY2022	ava	Interest Expense Excluding Interest Expense To Related Party InterestExpenseExcludingInterestExpenseToRelatedParty	117634000
CY2021	ava	Interest Expense Excluding Interest Expense To Related Party InterestExpenseExcludingInterestExpenseToRelatedParty	105731000
CY2023	ava	Interest Expense To Affiliated Trust InterestExpenseToAffiliatedTrust	2504000
CY2022	ava	Interest Expense To Affiliated Trust InterestExpenseToAffiliatedTrust	1058000
CY2021	ava	Interest Expense To Affiliated Trust InterestExpenseToAffiliatedTrust	421000
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	3633000
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	3718000
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	3987000
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	19526000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	62717000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	33298000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	137550000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	137985000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	159365000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-33630000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-17191000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12031000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	171180000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	155176000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	147334000
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76396000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72989000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	69951000
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CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73093000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70085000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.24
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.13
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.24
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.12
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.1
CY2023	us-gaap	Net Income Loss NetIncomeLoss	171180000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	155176000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	147334000
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CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	2387000
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-888000
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1701000
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-8981000
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3339000
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1701000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8981000
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CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	164157000
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CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	103784000
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	151167000
CY2023Q4	us-gaap	Assets Current AssetsCurrent	661842000
CY2022Q4	us-gaap	Assets Current AssetsCurrent	721802000
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	5700056000
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	5444709000
CY2023Q4	us-gaap	Goodwill Goodwill	52426000
CY2022Q4	us-gaap	Goodwill Goodwill	52426000
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	894168000
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	833328000
CY2023Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	393985000
CY2022Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	365085000
CY2023Q4	us-gaap	Assets Assets	7702477000
CY2022Q4	us-gaap	Assets Assets	7417350000
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	143262000
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	202954000
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	15000000
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	13500000
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	349000000
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	463000000
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	76007000
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	95665000
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	191936000
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	189415000
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	775205000
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	964534000
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	89830000
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	93901000
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	718318000
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	674995000
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	856666000
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	840837000
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	210230000
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	175855000
CY2023Q4	us-gaap	Liabilities Liabilities	5217154000
CY2022Q4	us-gaap	Liabilities Liabilities	5082682000
CY2023Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2022Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	78074587
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	78074587
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	74945948
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	74945948
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1644327000
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1525185000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-357000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2058000
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	841353000
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	811541000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2485323000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2334668000
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7702477000
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7417350000
CY2023	us-gaap	Profit Loss ProfitLoss	171180000
CY2022	us-gaap	Profit Loss ProfitLoss	155176000
CY2021	us-gaap	Profit Loss ProfitLoss	147334000
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	265409000
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	253142000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	232176000
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-36837000
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18231000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11224000
CY2023	ava	Power And Natural Gas Cost Amortization Deferrals Net PowerAndNaturalGasCostAmortizationDeferralsNet	7122000
CY2022	ava	Power And Natural Gas Cost Amortization Deferrals Net PowerAndNaturalGasCostAmortizationDeferralsNet	-78350000
CY2021	ava	Power And Natural Gas Cost Amortization Deferrals Net PowerAndNaturalGasCostAmortizationDeferralsNet	-51847000
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2935000
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1974000
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2606000
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	8442000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	8717000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	4713000
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6886000
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6704000
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	7004000
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	14283000
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	32173000
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	29077000
CY2023	ava	Other Regulatory Assets And Liabilities OtherRegulatoryAssetsAndLiabilities	34189000
CY2022	ava	Other Regulatory Assets And Liabilities OtherRegulatoryAssetsAndLiabilities	15129000
CY2021	ava	Other Regulatory Assets And Liabilities OtherRegulatoryAssetsAndLiabilities	-4445000
CY2023	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-26207000
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	5280000
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	3769000
CY2023	ava	Adjustment In Decoupling Regulatory Deferral AdjustmentInDecouplingRegulatoryDeferral	3328000
CY2022	ava	Adjustment In Decoupling Regulatory Deferral AdjustmentInDecouplingRegulatoryDeferral	-33469000
CY2021	ava	Adjustment In Decoupling Regulatory Deferral AdjustmentInDecouplingRegulatoryDeferral	-6056000
CY2023	ava	Realized And Unrealized Gains On Assets And Investments RealizedAndUnrealizedGainsOnAssetsAndInvestments	-3369000
CY2022	ava	Realized And Unrealized Gains On Assets And Investments RealizedAndUnrealizedGainsOnAssetsAndInvestments	50006000
CY2021	ava	Realized And Unrealized Gains On Assets And Investments RealizedAndUnrealizedGainsOnAssetsAndInvestments	23187000
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-6066000
CY2022	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	11957000
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-2859000
CY2023	us-gaap	Pension Contributions PensionContributions	10000000
CY2022	us-gaap	Pension Contributions PensionContributions	42000000
CY2021	us-gaap	Pension Contributions PensionContributions	42000000
CY2023	ava	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	409000
CY2022	ava	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	17035000
CY2021	ava	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	17568000
CY2023	ava	Proceeds From Settlement Of Derivative Instruments ProceedsFromSettlementOfDerivativeInstruments	7869000
CY2021	ava	Proceeds From Settlement Of Derivative Instruments ProceedsFromSettlementOfDerivativeInstruments	324000
CY2023	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-36855000
CY2022	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	56007000
CY2021	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	46107000
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	52309000
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	22941000
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	17282000
CY2023	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-129226000
CY2022	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	141014000
CY2021	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	17564000
CY2023	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1506000
CY2022	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	1125000
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-20199000
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	26037000
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	6613000
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-930000
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-66144000
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	65928000
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	33369000
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	14881000
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	22106000
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4074000
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	447079000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	124207000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	267340000
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	498637000
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	451995000
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	439939000
CY2023	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	3425000
CY2022	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	2745000
CY2021	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	1841000
CY2023	ava	Payments To Acquire Equity And Property Investments PaymentsToAcquireEquityAndPropertyInvestments	13380000
CY2022	ava	Payments To Acquire Equity And Property Investments PaymentsToAcquireEquityAndPropertyInvestments	10642000
CY2021	ava	Payments To Acquire Equity And Property Investments PaymentsToAcquireEquityAndPropertyInvestments	16001000
CY2023	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	3200000
CY2022	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	1000000
CY2021	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	8306000
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1853000
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4144000
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4559000
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-510389000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-460238000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-444916000
CY2023	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-114000000
CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	179000000
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	81000000
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	250000000
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	399856000
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	140000000
CY2023	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	16735000
CY2022	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	253085000
CY2021	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2935000
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	112308000
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	137778000
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	89998000
CY2023	us-gaap	Payments Of Dividends PaymentsOfDividends	140923000
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	129061000
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	118211000
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-5765000
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-7197000
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4304000
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	84885000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	327291000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	185548000
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	21575000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-8740000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7972000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13428000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	22168000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	14196000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	35003000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13428000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	22168000
CY2023	us-gaap	Interest Paid Net InterestPaidNet	131522000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	107468000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	98592000
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	2501000
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	2251000
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	3652000
CY2023	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	800000
CY2022	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	86000
CY2021	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	22330000
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	33691000
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	27708000
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	23938000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2485323000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2334668000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	2154744000
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.84
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.76
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.69
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Use of Estimates</span></p><p style="font-size:10pt;margin-top:5pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported for assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include:</span></p><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">determining the market value of energy commodity derivative assets and liabilities,</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">pension and other postretirement benefit plan obligations,</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">contingent liabilities,</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">goodwill impairment testing,</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">fair value of equity investments,</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">recoverability of regulatory assets, and</span></div></div><div style="margin-left:6.667%;display:flex;margin-top:6pt;justify-content:flex-start;align-items:baseline;margin-bottom:0;min-width:6.667%;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:7.14323979728499%;display:inline-flex;justify-content:flex-start;">•</span><div style="width:100%;display:inline;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">unbilled revenues.</span></div></div><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Changes in these estimates and assumptions are considered reasonably possible and may have a material effect on the consolidated financial statements and thus actual results could differ from the amounts reported and disclosed herein.</span></p>
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7144000
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7567000
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4713000
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1500000
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1589000
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	990000
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	84000
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	-19000
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	-909000
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	5949000
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	1957000
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	1943000
CY2023	ava	Interest On Regulatory Deferrals InterestOnRegulatoryDeferrals	8713000
CY2022	ava	Interest On Regulatory Deferrals InterestOnRegulatoryDeferrals	1914000
CY2021	ava	Interest On Regulatory Deferrals InterestOnRegulatoryDeferrals	1206000
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6886000
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6704000
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	7004000
CY2023	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-630000
CY2022	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-3037000
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	1386000
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-3227000
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	48492000
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	21402000
CY2023	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	575000
CY2022	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	613000
CY2021	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	3129000
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	19526000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	62717000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	33298000
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6473000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10465000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11387000
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6865000
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	149000
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	9279000
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	8351000
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4141000
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	10201000
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4987000
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6473000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10465000
CY2023	ava	Government Grants GovernmentGrants	1500000
CY2022	ava	Government Grants GovernmentGrants	6100000
CY2023Q4	us-gaap	Goodwill Goodwill	52400000
CY2022Q4	us-gaap	Goodwill Goodwill	52400000
CY2023Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0
CY2023	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Derivative Assets and Liabilities</span></p><p style="font-size:10pt;margin-top:5pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Derivatives are recorded as either assets or liabilities on the Consolidated Balance Sheets measured at estimated fair value.</span></p><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The WUTC and the IPUC issued accounting orders authorizing Avista Corp. to offset energy commodity derivative assets or liabilities with a regulatory asset or liability. This accounting treatment is intended to defer the recognition of mark-to-market gains and losses on energy commodity transactions until the period of delivery. Realized benefits and costs result in adjustments to retail rates through PGAs, the ERM in Washington, the PCA mechanism in Idaho, and periodic general rate cases. The resulting regulatory assets associated with energy commodity derivative instruments are probable of recovery through future rates.</span></p><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Substantially all forward contracts to purchase or sell power and natural gas are recorded as derivative assets or liabilities at estimated fair value with an offsetting regulatory asset or liability. Contracts not considered derivatives are accounted for on the accrual basis until they are settled or realized unless there is a decline in the fair value of the contract determined to be other-than-temporary.</span></p><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">For interest rate swap derivatives, Avista Corp. records all mark-to-market gains and losses in each accounting period as assets and liabilities, as well as offsetting regulatory assets and liabilities, such that there is no income statement impact. The interest rate swap derivatives are risk management tools similar to energy commodity derivatives. Upon settlement of interest rate swap derivatives, the regulatory asset or liability is amortized as a component of interest expense over the term of the associated debt. The Company records an offset of interest rate swap derivative assets and liabilities with regulatory assets and liabilities, based on the prior practice of the commissions to provide recovery through the ratemaking process.</span></p><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The Company has multiple master netting agreements with a variety of entities allowing for cross-commodity netting of derivative agreements with the same counterparty (i.e. power derivatives can be netted with natural gas derivatives). In addition, some master netting agreements allow for the netting of commodity derivatives and interest rate swap derivatives for the same counterparty. The Company does not have agreements which allow for cross-affiliate netting among multiple affiliated legal entities. The Company nets all derivative instruments when allowed by the agreement for presentation in the Consolidated Balance Sheets.</span></p>
CY2023Q4	us-gaap	Retained Earnings Appropriated RetainedEarningsAppropriated	59118000
CY2022Q4	us-gaap	Retained Earnings Appropriated RetainedEarningsAppropriated	57231000
CY2023Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	81651000
CY2022Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	75766000
CY2023Q4	ava	Emission Allowance EmissionAllowance	56097000
CY2023Q4	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	16272000
CY2022Q4	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	26788000
CY2023Q4	us-gaap	Other Inventory OtherInventory	5964000
CY2022Q4	us-gaap	Other Inventory OtherInventory	5120000
CY2023Q4	us-gaap	Inventory Net InventoryNet	159984000
CY2022Q4	us-gaap	Inventory Net InventoryNet	107674000
CY2023Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	66142000
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	52752000
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	30201000
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	29234000
CY2022Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	30740000
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	11821000
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	18198000
CY2023Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	9977000
CY2022Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	5886000
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	103784000
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	151167000
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	153350000
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	147809000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	67585000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	68238000
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	36414000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	40056000
CY2023Q4	ava	Non Regulated Property NonRegulatedProperty	33813000
CY2022Q4	ava	Non Regulated Property NonRegulatedProperty	25401000
CY2023Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	15287000
CY2022Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	17954000
CY2023Q4	ava	Long Term Prepaid License Fees LongTermPrepaidLicenseFees	19448000
CY2022Q4	ava	Long Term Prepaid License Fees LongTermPrepaidLicenseFees	17936000
CY2023Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	32997000
CY2022Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	13382000
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	11547000
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	11547000
CY2023Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	7794000
CY2022Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	7541000
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15750000
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15221000
CY2023Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	393985000
CY2022Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	365085000
CY2023Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	31928000
CY2022Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	38568000
CY2023Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	32072000
CY2022Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	29279000
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	23539000
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	20863000
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	14082000
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	15625000
CY2023Q4	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	17217000
CY2022Q4	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	26910000
CY2023Q4	ava	Climate Commitment Act Obligations Current ClimateCommitmentActObligationsCurrent	19081000
CY2022Q4	ava	Climate Commitment Act Obligations Current ClimateCommitmentActObligationsCurrent	0
CY2023Q4	ava	Deferred Wholesale Revenue DeferredWholesaleRevenue	0
CY2022Q4	ava	Deferred Wholesale Revenue DeferredWholesaleRevenue	8481000
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	54017000
CY2022Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	49689000
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	191936000
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	189415000
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	63559000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	64284000
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	39095000
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	42495000
CY2023Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	28233000
CY2022Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	28784000
CY2023Q4	ava	Climate Commitment Act Obligations Noncurrent ClimateCommitmentActObligationsNoncurrent	26026000
CY2023Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	18058000
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	15783000
CY2023Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	17902000
CY2022Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	7892000
CY2023Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	17357000
CY2022Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	16617000
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	210230000
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	175855000
CY2023Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	78531000
CY2022Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	81691000
CY2023	ava	Public Utility Operating Expenses Excise Taxes Collected PublicUtilityOperatingExpensesExciseTaxesCollected	75404000
CY2022	ava	Public Utility Operating Expenses Excise Taxes Collected PublicUtilityOperatingExpensesExciseTaxesCollected	69931000
CY2021	ava	Public Utility Operating Expenses Excise Taxes Collected PublicUtilityOperatingExpensesExciseTaxesCollected	62736000
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	7400000
CY2023	us-gaap	Revenues Revenues	1751554000
CY2022	us-gaap	Revenues Revenues	1710207000
CY2021	us-gaap	Revenues Revenues	1438936000
CY2023	us-gaap	Lessee Operating Lease Existence Of Option To Extend LesseeOperatingLeaseExistenceOfOptionToExtend	true
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	5096000
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	4986000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	4970000
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	24628000
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	1567000
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1180000
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3641000
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3641000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3641000
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2221000
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2375000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2522000
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	4960000
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	4828000
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	4805000
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2221000
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2375000
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2522000
CY2023	ava	Total Lease Paymentsin Operating Cash Flows TotalLeasePaymentsinOperatingCashFlows	7181000
CY2022	ava	Total Lease Paymentsin Operating Cash Flows TotalLeasePaymentsinOperatingCashFlows	7203000
CY2021	ava	Total Lease Paymentsin Operating Cash Flows TotalLeasePaymentsinOperatingCashFlows	7327000
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3235000
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	3085000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2935000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	67585000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	68238000
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4490000
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4349000
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	63559000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	64284000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	68049000
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	68633000
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	36414000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	40056000
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3400000
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3235000
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	39095000
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	42495000
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	42495000
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	45730000
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P22Y3M10D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P23Y3M10D
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M10D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y5M1D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0429
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0428
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0377
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0407
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4988000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	5459000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4984000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	5454000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4981000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5456000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5007000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	5458000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4992000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	5456000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	83532000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	27292000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	108484000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	54575000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	40435000
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	12080000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	68049000
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	42495000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4850000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	5456000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4877000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	5459000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4884000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5454000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4869000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	5456000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4880000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	5458000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	86991000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	32748000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	111351000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	60031000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	42718000
CY2022Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	14301000
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	68633000
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	45730000
CY2023Q4	us-gaap	Number Of Foreign Currency Derivatives Held NumberOfForeignCurrencyDerivativesHeld	5
CY2022Q4	us-gaap	Number Of Foreign Currency Derivatives Held NumberOfForeignCurrencyDerivativesHeld	19
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	78513000
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	70196000
CY2023Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	153350000
CY2022Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	147809000
CY2023	ava	Gains Losses On Equity Securities Without Readily Determinable Fair Value GainsLossesOnEquitySecuritiesWithoutReadilyDeterminableFairValue	4323000
CY2022	ava	Gains Losses On Equity Securities Without Readily Determinable Fair Value GainsLossesOnEquitySecuritiesWithoutReadilyDeterminableFairValue	45667000
CY2021	ava	Gains Losses On Equity Securities Without Readily Determinable Fair Value GainsLossesOnEquitySecuritiesWithoutReadilyDeterminableFairValue	8761000
CY2023Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount	14800000
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	34623000
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	100276000
CY2023Q4	us-gaap	Derivative Fair Value Amount Offset Against Collateral Net DerivativeFairValueAmountOffsetAgainstCollateralNet	42355000
CY2023Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-23298000
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	157747000
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	276846000
CY2022Q4	us-gaap	Derivative Fair Value Amount Offset Against Collateral Net DerivativeFairValueAmountOffsetAgainstCollateralNet	105439000
CY2022Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-13660000
CY2023Q4	us-gaap	Jointly Owned Utility Plant Proportionate Ownership Share JointlyOwnedUtilityPlantProportionateOwnershipShare	0.15
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	7799481000
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	7561688000
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	179527000
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	164147000
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7979008000
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7725835000
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2278952000
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2281126000
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	5700056000
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	5444709000
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7979008000
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7725835000
CY2023Q4	ava	Property Plant And Equipment Total PropertyPlantAndEquipmentTotal	7985433000
CY2022Q4	ava	Property Plant And Equipment Total PropertyPlantAndEquipmentTotal	7742466000
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	15783000
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	17142000
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	17194000
CY2023	ava	Asset Retirement Obligation Increase Decrease In Liabilities Incurred AssetRetirementObligationIncreaseDecreaseInLiabilitiesIncurred	1927000
CY2021	ava	Asset Retirement Obligation Increase Decrease In Liabilities Incurred AssetRetirementObligationIncreaseDecreaseInLiabilitiesIncurred	825000
CY2023	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	232000
CY2022	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1964000
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1541000
CY2023	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	580000
CY2022	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	605000
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	664000
CY2023Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	18058000
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	15783000
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	17142000
CY2023	us-gaap	Pension Contributions PensionContributions	10000000
CY2021	us-gaap	Pension Contributions PensionContributions	42000000
CY2022	us-gaap	Pension Contributions PensionContributions	42000000
CY2022	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	11800000
CY2023	ava	Percentage Of Service Related Net Periodic Benefit Costs Capitalized To Utility Property PercentageOfServiceRelatedNetPeriodicBenefitCostsCapitalizedToUtilityProperty	0.40
CY2023	ava	Percentage Of Service Related Net Periodic Benefit Costs Recorded To Operating Expenses PercentageOfServiceRelatedNetPeriodicBenefitCostsRecordedToOperatingExpenses	0.60
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15022000
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13258000
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	11671000
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3207000
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1040000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	807000
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-36837000
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18231000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11224000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-33630000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-17191000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12031000
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	28886000
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	28977000
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33467000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferences	-12270000
CY2023	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences Percent TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferencesPercent	-0.089
CY2022	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferences	-12366000
CY2022	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences Percent TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferencesPercent	-0.090
CY2021	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferences	-13820000
CY2021	ava	Tax Effect Of Regulatory Treatment Of Utility Plant Differences Percent TaxEffectOfRegulatoryTreatmentOfUtilityPlantDifferencesPercent	-0.087
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2077000
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.015
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1676000
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.012
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1385000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.008
CY2023	ava	Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Costs IncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCosts	-47983000
CY2023	ava	Effective Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Cost EffectiveIncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCost	-0.349
CY2022	ava	Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Costs IncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCosts	-34454000
CY2022	ava	Effective Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Cost EffectiveIncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCost	-0.25
CY2021	ava	Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Costs IncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCosts	-8678000
CY2021	ava	Effective Income Tax Reconciliation Flow Through Related To Deduction Of Meters And Mixed Service Cost EffectiveIncomeTaxReconciliationFlowThroughRelatedToDeductionOfMetersAndMixedServiceCost	-0.054
CY2023	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2334000
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.017
CY2022	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	258000
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.002
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	75000
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2006000
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-766000
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.005
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-248000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-33630000
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.244
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-17191000
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.125
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12031000
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.075
CY2023Q4	ava	Deferred Tax Assets Regulatory Liabilities DeferredTaxAssetsRegulatoryLiabilities	192099000
CY2022Q4	ava	Deferred Tax Assets Regulatory Liabilities DeferredTaxAssetsRegulatoryLiabilities	197998000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	76969000
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	74782000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	19100000
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	20132000
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	47839000
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	54903000
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	336007000
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	347815000
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10461000
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3874000
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	325546000
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	343941000
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	746876000
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	712470000
CY2023Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	268833000
CY2022Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	281483000
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	28155000
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	24983000
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1043864000
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1018936000
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	718318000
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	674995000
CY2023	ava	Utility Power Resources UtilityPowerResources	607155000
CY2022	ava	Utility Power Resources UtilityPowerResources	660967000
CY2021	ava	Utility Power Resources UtilityPowerResources	431199000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	459007000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	374530000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	312284000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	277459000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	275924000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	2526324000
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	4225528000
CY2023	us-gaap	Long Term Contract For Purchase Of Electric Power Amount Of Long Term Debt Or Lease Obligation Outstanding LongTermContractForPurchaseOfElectricPowerAmountOfLongTermDebtOrLeaseObligationOutstanding	275100000
CY2022Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0
CY2023Q4	us-gaap	Secured Debt SecuredDebt	2618700000
CY2022Q4	us-gaap	Secured Debt SecuredDebt	2382200000
CY2023Q4	ava	Securedand Unsecured Debt SecuredandUnsecuredDebt	2633700000
CY2022Q4	ava	Securedand Unsecured Debt SecuredandUnsecuredDebt	2397200000
CY2023Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	689000
CY2022Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	726000
CY2023Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	18953000
CY2022Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	18261000
CY2023Q4	ava	Long Term Debt Before Current Portion And Bonds Held By Company LongTermDebtBeforeCurrentPortionAndBondsHeldByCompany	2614058000
CY2022Q4	ava	Long Term Debt Before Current Portion And Bonds Held By Company LongTermDebtBeforeCurrentPortionAndBondsHeldByCompany	2378213000
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	15000000
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	13500000
CY2023	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	150000000
CY2000	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	10000000.0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023Q4	ava	Number Of Equity Investments Measured At Fair Value On Recurring Basic NumberOfEquityInvestmentsMeasuredAtFairValueOnRecurringBasic	2
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023Q4	ava	Amount Available For Dividend Distribution Without Affecting Covenants AmountAvailableForDividendDistributionWithoutAffectingCovenants	295600000
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	112300000
CY2023Q4	ava	Accumulated Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Tax AccumulatedOtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossTax	95000
CY2022Q4	ava	Accumulated Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Tax AccumulatedOtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossTax	547000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-357000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-2058000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	171180000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	155176000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	147334000
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76396000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72989000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	69951000
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	104000
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	134000
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76495000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73093000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70085000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.24
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.13
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.24
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.12
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0
CY2023Q4	ava	Regulatory Asset Earning Return RegulatoryAssetEarningReturn	543185000
CY2023Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	480348000
CY2023Q4	us-gaap	Amount Of Regulatory Costs Not Yet Approved AmountOfRegulatoryCostsNotYetApproved	16962000
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	146327000
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	894168000
CY2022Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	193787000
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	833328000
CY2023Q4	ava	Regulatory Liability Earning Return RegulatoryLiabilityEarningReturn	816631000
CY2023Q4	ava	Remaining Amounts Of Regulatory Liabilities For Which No Interest During Recovery Period Is Provided RemainingAmountsOfRegulatoryLiabilitiesForWhichNoInterestDuringRecoveryPeriodIsProvided	94342000
CY2023Q4	ava	Pending Regulatory Treatment Liability PendingRegulatoryTreatmentLiability	21700000
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	76007000
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	856666000
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	95665000
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	840837000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	228232000
CY2021	ava	Interest Expense Including Affiliated Trusts InterestExpenseIncludingAffiliatedTrusts	106152000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12031000
CY2021	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	147334000
CY2023	ava	Threshold Limit Of Deadband And Sharing Bands For Future Surcharge Or Rebate To Customer ThresholdLimitOfDeadbandAndSharingBandsForFutureSurchargeOrRebateToCustomer	4000000.0
CY2023Q4	ava	Thresholdto Return Washington Energy Recovery Mechanism Dollarsto Customers ThresholdtoReturnWashingtonEnergyRecoveryMechanismDollarstoCustomers	30000000
CY2023	ava	Proposed Cumulative Rebate Refund Period ProposedCumulativeRebateRefundPeriod	P2Y
CY2023Q4	us-gaap	Deferred Gas Cost DeferredGasCost	51400000
CY2022Q4	us-gaap	Deferred Gas Cost DeferredGasCost	52100000
CY2023	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2023	us-gaap	Revenues Revenues	1751554000
CY2023	ava	Utilities Operating Expense Deferrals For Products And Services UtilitiesOperatingExpenseDeferralsForProductsAndServices	702372000
CY2023	ava	Other Operating Expenses OtherOperatingExpenses	416368000
CY2023	ava	Depreciation And Amortization Expense DepreciationAndAmortizationExpense	265409000
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	257690000
CY2023	ava	Interest Expense Including Affiliated Trusts InterestExpenseIncludingAffiliatedTrusts	143299000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-33630000
CY2023	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	171180000
CY2023	ava	Payments To Acquire Property Plant And Equipment Excludes Other Business Expenditure PaymentsToAcquirePropertyPlantAndEquipmentExcludesOtherBusinessExpenditure	498637000
CY2022	us-gaap	Revenues Revenues	1710207000
CY2022	ava	Utilities Operating Expense Deferrals For Products And Services UtilitiesOperatingExpenseDeferralsForProductsAndServices	735862000
CY2022	ava	Other Operating Expenses OtherOperatingExpenses	416768000
CY2022	ava	Depreciation And Amortization Expense DepreciationAndAmortizationExpense	253142000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	190242000
CY2022	ava	Interest Expense Including Affiliated Trusts InterestExpenseIncludingAffiliatedTrusts	118692000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-17191000
CY2022	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	155176000
CY2022	ava	Payments To Acquire Property Plant And Equipment Excludes Other Business Expenditure PaymentsToAcquirePropertyPlantAndEquipmentExcludesOtherBusinessExpenditure	452829000
CY2021	us-gaap	Revenues Revenues	1438936000
CY2021	ava	Utilities Operating Expense Deferrals For Products And Services UtilitiesOperatingExpenseDeferralsForProductsAndServices	497123000
CY2021	ava	Other Operating Expenses OtherOperatingExpenses	372052000
CY2021	ava	Depreciation And Amortization Expense DepreciationAndAmortizationExpense	232176000
CY2021	ava	Payments To Acquire Property Plant And Equipment Excludes Other Business Expenditure PaymentsToAcquirePropertyPlantAndEquipmentExcludesOtherBusinessExpenditure	441209000
CY2023Q4	us-gaap	Assets Assets	7702477000
CY2022Q4	us-gaap	Assets Assets	7417350000
CY2021Q4	us-gaap	Assets Assets	6853583000
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

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$AVA
AVISTA CORP Stock $ava

2024 Q1 Form 10-K Financial Statement

#000095017024017421 Filed on February 21, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AVA AVISTA CORP Stock $ava

2024 Q1 Form 10-K Financial Statement

#000095017024017421 Filed on February 21, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AVA
AVISTA CORP Stock $ava