$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

$pnw Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000076462221000031 Filed on May 05, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$696.5M	$661.9M
YoY Change	5.22%	-10.61%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$176.4M	$173.2M
YoY Change	1.87%	3.2%
% of Gross Profit
Operating Expenses	$622.0M	$591.4M
YoY Change	5.17%	-14.12%
Operating Profit	$47.53M	$40.42M
YoY Change	17.59%	-32.72%
Interest Expense	$56.94M	$55.16M
YoY Change	3.24%	2.17%
% of Operating Profit	119.8%	136.46%
Other Income/Expense, Net	$45.57M	$29.39M
YoY Change	55.05%	53.79%
Pretax Income	$36.20M	$14.66M
YoY Change	146.98%	-41.86%
Income Tax	-$4.350M	-$20.21M
% Of Pretax Income	-12.02%	-137.88%
Net Earnings	$40.51M	$34.87M
YoY Change	16.2%	52.98%
Net Earnings / Revenue	5.82%	5.27%
Basic Earnings Per Share	$0.32	$0.27
Diluted Earnings Per Share	$0.32	$0.27
COMMON SHARES
Basic Shares Outstanding	112.8M shares	112.6M shares
Diluted Shares Outstanding	113.1M shares	112.9M shares

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$17.00M	$63.00M
YoY Change	-73.02%	950.0%
Cash & Equivalents	$17.20M	$63.14M
Short-Term Investments
Other Short-Term Assets	$86.24M	$82.57M
YoY Change	4.44%	25.2%
Inventory	$339.0M	$340.0M
Prepaid Expenses
Receivables	$243.0M	$251.0M
Other Receivables	$0.00	$20.00M
Total Short-Term Assets	$1.170B	$1.078B
YoY Change	8.48%	23.04%
LONG-TERM ASSETS
Property, Plant & Equipment	$13.76B	$13.15B
YoY Change	4.66%	6.32%
Goodwill
YoY Change
Intangibles	$278.2M	$279.2M
YoY Change	-0.36%	4.19%
Long-Term Investments
YoY Change
Other Assets	$88.49M	$97.82M
YoY Change	-9.54%	-1.63%
Total Long-Term Assets	$19.01B	$17.48B
YoY Change	8.76%	2.98%
TOTAL ASSETS
Total Short-Term Assets	$1.170B	$1.078B
Total Long-Term Assets	$19.01B	$17.48B
Total Assets	$20.18B	$18.56B
YoY Change	8.74%	3.96%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$309.1M	$301.3M
YoY Change	2.6%	14.29%
Accrued Expenses	$133.0M	$66.00M
YoY Change	101.52%	-43.1%
Deferred Revenue	$45.17M	$54.97M
YoY Change	-17.82%	-37.01%
Short-Term Debt	$214.8M	$563.0M
YoY Change	-61.86%	130.69%
Long-Term Debt Due		$650.0M
YoY Change		160.0%
Total Short-Term Liabilities	$1.331B	$2.295B
YoY Change	-42.04%	44.25%
LONG-TERM LIABILITIES
Long-Term Debt	$6.465B	$4.833B
YoY Change	33.76%	-1.08%
Other Long-Term Liabilities	$206.2M	$163.5M
YoY Change	26.09%	9.56%
Total Long-Term Liabilities	$6.671B	$4.997B
YoY Change	33.51%	-0.76%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.331B	$2.295B
Total Long-Term Liabilities	$6.671B	$4.997B
Total Liabilities	$8.002B	$7.292B
YoY Change	9.73%	10.05%
SHAREHOLDERS EQUITY
Retained Earnings	$3.061B	$2.868B
YoY Change	6.74%	7.84%
Common Stock	$2.687B	$2.664B
YoY Change	0.85%	0.77%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.776M	$7.000M
YoY Change	-46.06%	25.31%
Treasury Stock Shares	44.34K shares	72.30K shares
Shareholders Equity	$5.683B	$5.469B
YoY Change
Total Liabilities & Shareholders Equity	$20.18B	$18.56B
YoY Change	8.74%	3.96%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	$40.51M	$34.87M
YoY Change	16.2%	52.98%
Depreciation, Depletion And Amortization	$176.4M	$173.2M
YoY Change	1.87%	3.2%
Cash From Operating Activities	$202.0M	$183.6M
YoY Change	10.01%	5.88%
INVESTING ACTIVITIES
Capital Expenditures	-$363.8M	-$340.0M
YoY Change	7.0%	30.87%
Acquisitions
YoY Change
Other Investing Activities	-$5.974M	-$349.0K
YoY Change	1611.75%	-92.37%
Cash From Investing Activities	-$348.1M	-$341.2M
YoY Change	2.03%	34.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	-$738.0K
YoY Change
Debt Paid & Issued, Net	$0.00	$150.0M
YoY Change	-100.0%	-70.0%
Cash From Financing Activities	$103.3M	$210.4M
YoY Change	-50.9%	158.39%
NET CHANGE
Cash From Operating Activities	$202.0M	$183.6M
Cash From Investing Activities	-$348.1M	-$341.2M
Cash From Financing Activities	$103.3M	$210.4M
Net Change In Cash	-$42.77M	$52.86M
YoY Change	-180.91%	15309.91%
FREE CASH FLOW
Cash From Operating Activities	$202.0M	$183.6M
Capital Expenditures	-$363.8M	-$340.0M
Free Cash Flow	$565.8M	$523.6M
YoY Change	8.06%	20.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000764622
CY2021Q1	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2021Q1	dei	Document Type DocumentType	10-Q
CY2021Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2021Q1	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
CY2021Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q1	dei	Entity File Number EntityFileNumber	1-8962
CY2021Q1	dei	Entity Registrant Name EntityRegistrantName	PINNACLE WEST CAPITAL CORPORATION
CY2021Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	86-0512431
CY2021Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	AZ
CY2021Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	400 North Fifth Street, P.O. Box 53999
CY2021Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Phoenix
CY2021Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	AZ
CY2021Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	85072-3999
CY2021Q1	dei	City Area Code CityAreaCode	(602)
CY2021Q1	dei	Local Phone Number LocalPhoneNumber	250-1000
CY2021Q1	dei	Security12b Title Security12bTitle	Common Stock
CY2021Q1	dei	Trading Symbol TradingSymbol	PNW
CY2021Q1	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2021Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	112750962	shares
CY2021Q1	us-gaap	Revenues Revenues	696475000	USD
CY2020Q1	us-gaap	Revenues Revenues	661930000	USD
CY2021Q1	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	198227000	USD
CY2020Q1	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	188521000	USD
CY2021Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	230055000	USD
CY2020Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	221318000	USD
CY2021Q1	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	157820000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	154079000	USD
CY2021Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	59483000	USD
CY2020Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	56768000	USD
CY2021Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3356000	USD
CY2020Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	822000	USD
CY2021Q1	us-gaap	Costs And Expenses CostsAndExpenses	648941000	USD
CY2020Q1	us-gaap	Costs And Expenses CostsAndExpenses	621508000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	47534000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	55158000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	40422000	USD
CY2021Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	9207000	USD
CY2020Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	7697000	USD
CY2021Q1	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-27791000	USD
CY2020Q1	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-13911000	USD
CY2021Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	12429000	USD
CY2020Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	12569000	USD
CY2021Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	3853000	USD
CY2020Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4784000	USD
CY2021Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	45574000	USD
CY2020Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	29393000	USD
CY2021Q1	us-gaap	Interest Costs Incurred InterestCostsIncurred	61938000	USD
CY2020Q1	us-gaap	Interest Costs Incurred InterestCostsIncurred	59234000	USD
CY2021Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4994000	USD
CY2020Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4076000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	56944000	USD
CY2021Q1	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	36164000	USD
CY2020Q1	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	14657000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4350000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-20209000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	40514000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	34866000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35641000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	29993000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112829000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112594000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113093000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112862000	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2021Q1	us-gaap	Profit Loss ProfitLoss	40514000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	34866000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	86000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-292000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	262000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	292000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	394000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-20000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-336000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-245000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1022000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1205000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1284000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1517000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	41798000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	36383000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	36925000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	31510000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	17202000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	59968000	USD
CY2021Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	263126000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	313576000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	122034000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	132197000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	20405000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19782000	USD
CY2021Q1	us-gaap	Other Inventory Supplies OtherInventorySupplies	314702000	USD
CY2020Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	314745000	USD
CY2021Q1	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	24396000	USD
CY2020Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	19552000	USD
CY2021Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	6792000	USD
CY2021Q1	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	22611000	USD
CY2020Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	2931000	USD
CY2021Q1	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	228609000	USD
CY2020Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	175835000	USD
CY2021Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	111271000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	115878000	USD
CY2021Q1	us-gaap	Other Assets Current OtherAssetsCurrent	86238000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	76627000	USD
CY2021Q1	us-gaap	Assets Current AssetsCurrent	1169784000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	1198319000	USD
CY2021Q1	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1159699000	USD
CY2020Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1138435000	USD
CY2021Q1	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	357506000	USD
CY2020Q4	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	254509000	USD
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	88487000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	92922000	USD
CY2021Q1	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	1605692000	USD
CY2020Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	1485866000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	20948591000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	20837885000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7189708000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7110310000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13758883000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13727575000	USD
CY2021Q1	pnw	Construction Work In Progress Gross ConstructionWorkInProgressGross	1056991000	USD
CY2020Q4	pnw	Construction Work In Progress Gross ConstructionWorkInProgressGross	937384000	USD
CY2021Q1	pnw	Public Utilities Property Plant And Equipment Sale Leaseback Net PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet	97068000	USD
CY2020Q4	pnw	Public Utilities Property Plant And Equipment Sale Leaseback Net PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet	98036000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	278226000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	282570000	USD
CY2021Q1	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	124533000	USD
CY2020Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	113645000	USD
CY2021Q1	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	15315701000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	15159210000	USD
CY2021Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1135857000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1133987000	USD
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	502959000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	505064000	USD
CY2021Q1	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	418427000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	502992000	USD
CY2021Q1	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	36238000	USD
CY2020Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	34983000	USD
CY2021Q1	pnw	Total Deferred Debits TotalDeferredDebits	2093481000	USD
CY2020Q4	pnw	Total Deferred Debits TotalDeferredDebits	2177026000	USD
CY2021Q1	us-gaap	Assets Assets	20184658000	USD
CY2020Q4	us-gaap	Assets Assets	20020421000	USD
CY2021Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	309145000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	318585000	USD
CY2021Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	213536000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	159551000	USD
CY2021Q1	us-gaap	Interest Payable Current InterestPayableCurrent	58709000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	56962000	USD
CY2021Q1	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	USD
CY2020Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	93531000	USD
CY2021Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	214750000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	169000000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	45170000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	48340000	USD
CY2021Q1	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	3067000	USD
CY2020Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	7557000	USD
CY2021Q1	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	16021000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	15586000	USD
CY2021Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	74328000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	74785000	USD
CY2021Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	250228000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	229088000	USD
CY2021Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	145589000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	187448000	USD
CY2021Q1	us-gaap	Liabilities Current LiabilitiesCurrent	1330543000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1360433000	USD
CY2021Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6465045000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6314266000	USD
CY2021Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2134471000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2135403000	USD
CY2021Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2427769000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2450169000	USD
CY2021Q1	us-gaap	Asset Retirement Obligation AssetRetirementObligation	693383000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	689497000	USD
CY2021Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	164230000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	166484000	USD
CY2021Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	6928000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	11062000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	220999000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	221032000	USD
CY2021Q1	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	171227000	USD
CY2020Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	170097000	USD
CY2021Q1	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	190842000	USD
CY2020Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	191372000	USD
CY2021Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	5870000	USD
CY2020Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	5834000	USD
CY2021Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	360497000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	361336000	USD
CY2021Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	206174000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	190643000	USD
CY2021Q1	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	6582390000	USD
CY2020Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	6592929000	USD
CY2021Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	112791565	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	112760051	shares
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	2687052000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	2677482000	USD
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	44338	shares
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	20020421000	USD
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	72006	shares
CY2021Q1	us-gaap	Treasury Stock Value TreasuryStockValue	3776000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	6289000	USD
CY2021Q1	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2683276000	USD
CY2020Q4	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2671193000	USD
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CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3025106000	USD
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CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-62796000	USD
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CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	5633503000	USD
CY2021Q1	us-gaap	Minority Interest MinorityInterest	124164000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	119290000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5806680000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5752793000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	20184658000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	40514000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	34866000	USD
CY2021Q1	pnw	Deferred Investment Tax Credit DeferredInvestmentTaxCredit	529000	USD
CY2020Q1	pnw	Deferred Investment Tax Credit DeferredInvestmentTaxCredit	465000	USD
CY2021Q1	us-gaap	Share Based Compensation ShareBasedCompensation	11337000	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	176409000	USD
CY2021Q1	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-10163000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	173168000	USD
CY2021Q1	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-52210000	USD
CY2020Q1	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-5785000	USD
CY2021Q1	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	-564000	USD
CY2020Q1	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	-1808000	USD
CY2021Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	9207000	USD
CY2020Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	7697000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-11077000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18086000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	6282000	USD
CY2021Q1	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-50545000	USD
CY2020Q1	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-25575000	USD
CY2020Q1	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-34731000	USD
CY2021Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4801000	USD
CY2020Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-5445000	USD
CY2021Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-6792000	USD
CY2020Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1128000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9042000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	20202000	USD
CY2021Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	24465000	USD
CY2020Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5192000	USD
CY2021Q1	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	53985000	USD
CY2020Q1	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	49833000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-46028000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-63096000	USD
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CY2020Q1	pnw	Increase Decrease In Other Non Current Assets IncreaseDecreaseInOtherNonCurrentAssets	-81143000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1963000	USD
CY2021Q1	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	380548000	USD
CY2020Q1	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	195658000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-5974000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-106212000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	202012000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	183628000	USD
CY2021Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	363775000	USD
CY2020Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	340014000	USD
CY2021Q1	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	15296000	USD
CY2020Q1	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	3152000	USD
CY2021Q1	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-4994000	USD
CY2020Q1	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-4076000	USD
CY2021Q1	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	379978000	USD
CY2020Q1	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	195087000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-349000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-348069000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	210388000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-42766000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-341160000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	150000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2021Q1	pnw	Proceedsfrom Repaymentsof Shortterm Debt Net ProceedsfromRepaymentsofShorttermDebtNet	49750000	USD
CY2020Q1	pnw	Proceedsfrom Repaymentsof Shortterm Debt Net ProceedsfromRepaymentsofShorttermDebtNet	-76675000	USD
CY2021Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	751690000	USD
CY2021Q1	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	4000000	USD
CY2020Q1	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	226690000	USD
CY2021Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91721000	USD
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	86257000	USD
CY2021Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2020Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	150000000	USD
CY2021Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-738000	USD
CY2020Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-1680000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	103291000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	52856000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59968000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10283000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17202000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	63139000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5752793000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	40514000	USD
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CY2021Q1	pnw	Dividends Common Stock Net DividendsCommonStockNet	5000	USD
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CY2021Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1333000	USD
CY2021Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1333000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	3846000	USD
CY2021Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5806680000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5553188000	USD
CY2021Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-827000	USD
CY2020Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-3002000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	34866000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1517000	USD
CY2020Q1	pnw	Dividends Common Stock Net DividendsCommonStockNet	8000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4826000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2086000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	4513000	USD
CY2020Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5596832000	USD
CY2021Q1	us-gaap	Interest Paid Net InterestPaidNet	53885000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	53723000	USD
CY2021Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	79597000	USD
CY2020Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	100868000	USD
CY2021Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	785000	USD
CY2020Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2311000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	696475000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	661930000	USD
CY2021Q1	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	14000000	USD
CY2020Q1	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	14000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	19782000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	8171000	USD
CY2021Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4151000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	20633000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3528000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	9022000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	20405000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	19782000	USD
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CY2020Q4	us-gaap	Line Of Credit Facility Capacity Available For Trade Purchases LineOfCreditFacilityCapacityAvailableForTradePurchases	500000000	USD
CY2021Q1	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	6465045000	USD
CY2021Q1	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	7089619000	USD
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CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	7612841000	USD
CY2021Q1	pnw	Production Tax Credit Guarantees ProductionTaxCreditGuarantees	2000000	USD
CY2019Q4	pnw	Public Utilities Requested Longterm Debt Cost Of Capital Percentage PublicUtilitiesRequestedLongtermDebtCostOfCapitalPercentage	0.0410
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CY2019Q4	pnw	Rate Plan Comparison Tool Number Of Customers RatePlanComparisonToolNumberOfCustomers	13000	Customer
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CY2021Q1	pnw	Regulatory Asset Including Deferred Fuel And Purchased Power Regulatory Asset Current RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	339880000	USD
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CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1133987000	USD
CY2021Q1	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	0	USD
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CY2020Q4	pnw	Regulatory Liability Including Deferred Fuel And Purchased Power Regulatory Liability Current RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent	229088000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2450169000	USD
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CY2021Q1	pnw	Defined Benefit Plan Expected Future Employer Contributions Year Two DefinedBenefitPlanExpectedFutureEmployerContributionsYearTwo	0	USD
CY2021Q1	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	0	USD
CY2020Q4	pnw	Decommissioning Fund Investments Fair Value Net Pending Securities Salesand Purchases DecommissioningFundInvestmentsFairValueNetPendingSecuritiesSalesandPurchases	592227000	USD
CY2021Q1	pnw	Equity Contribution Guarantees EquityContributionGuarantees	38000000	USD
CY2021Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	1948000	USD
CY2020Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	3277000	USD
CY2021Q1	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	3000	USD
CY2020Q1	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	8000	USD
CY2021Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	12429000	USD
CY2020Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	12569000	USD
CY2021Q1	pnw	Nonoperating Costs NonoperatingCosts	1937000	USD
CY2020Q1	pnw	Nonoperating Costs NonoperatingCosts	2658000	USD
CY2021Q1	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-343000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	60000	USD
CY2021Q1	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	1573000	USD
CY2020Q1	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	2186000	USD
CY2021Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	3853000	USD
CY2020Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4784000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35641000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	29993000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112829000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112594000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	264000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	268000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113093000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112862000	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2021Q1	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	3882000	USD
CY2021Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	25811000	USD
CY2021Q1	pnw	Decommissioning Fund Investments Fair Value Net Pending Securities Salesand Purchases DecommissioningFundInvestmentsFairValueNetPendingSecuritiesSalesandPurchases	632661000	USD
CY2021Q1	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1159699000	USD
CY2021Q1	pnw	Special Use Fund Investments Other Net Fair Value Pending Salesand Purchases SpecialUseFundInvestmentsOtherNetFairValuePendingSalesandPurchases	1401000	USD
CY2021Q1	pnw	Special Use Fund Investments Other Gross Fair Value SpecialUseFundInvestmentsOtherGrossFairValue	357506000	USD
CY2021Q1	pnw	Assets Fair Value Gross Liabilityand Net Pending Securities Salesand Purchases AssetsFairValueGrossLiabilityandNetPendingSecuritiesSalesandPurchases	630180000	USD
CY2021Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1543016000	USD
CY2021Q1	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2597000	USD
CY2021Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	9995000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	4271000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4749000	USD
CY2020Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1138435000	USD
CY2020Q4	pnw	Special Use Fund Investments Other Net Fair Value Pending Salesand Purchases SpecialUseFundInvestmentsOtherNetFairValuePendingSalesandPurchases	504000	USD
CY2020Q4	pnw	Special Use Fund Investments Other Gross Fair Value SpecialUseFundInvestmentsOtherGrossFairValue	254509000	USD
CY2020Q4	pnw	Assets Fair Value Gross Liabilityand Net Pending Securities Salesand Purchases AssetsFairValueGrossLiabilityandNetPendingSecuritiesSalesandPurchases	588460000	USD
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1397693000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2986000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	18619000	USD
CY2021Q1	pnw	Stated Interest Ratefor Notes Receivable StatedInterestRateforNotesReceivable	0.039
CY2021Q1	us-gaap	Notes Receivable Net NotesReceivableNet	22700000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	27100000	USD
CY2021Q1	us-gaap	Defined Benefit Plan Assets Transferred To From Plan DefinedBenefitPlanAssetsTransferredToFromPlan	106000000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	262000	USD
CY2021Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1022000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	292000	USD
CY2020Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1225000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Liability Income Tax Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxLiabilityIncomeTaxBenefit	1140000000	USD
CY2021Q1	us-gaap	Regulatory Liability Amortization Period RegulatoryLiabilityAmortizationPeriod	P28Y6M
CY2021Q1	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	6000000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	6000000	USD
CY2021Q1	pnw	Income Tax Expense Benefit Attributable To Non Controlling Interests IncomeTaxExpenseBenefitAttributableToNonControllingInterests	0	USD

Files In Submission

Name	View Source	Status
0000764622-21-000031-index-headers.html	Edgar Link	pending
0000764622-21-000031-index.html	Edgar Link	pending
0000764622-21-000031.txt	Edgar Link	pending
0000764622-21-000031-xbrl.zip	Edgar Link	pending
exhibit101.htm	Edgar Link	pending
exhibit311-03312021.htm	Edgar Link	pending
exhibit312-03312021.htm	Edgar Link	pending
exhibit313-03312021.htm	Edgar Link	pending
exhibit314-03312021.htm	Edgar Link	pending
exhibit321-03312021.htm	Edgar Link	pending
exhibit322-03312021.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
pnw-20210331.htm	Edgar Link	pending
pnw-20210331.xsd	Edgar Link	pending
pnw-20210331_cal.xml	Edgar Link	unprocessable
pnw-20210331_def.xml	Edgar Link	unprocessable
pnw-20210331_htm.xml	Edgar Link	completed
pnw-20210331_lab.xml	Edgar Link	unprocessable
pnw-20210331_pre.xml	Edgar Link	unprocessable
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$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

2021 Q1 Form 10-Q Financial Statement

#000076462221000031 Filed on May 05, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PNW PINNACLE WEST CAPITAL CORP Stock $pnw

2021 Q1 Form 10-Q Financial Statement

#000076462221000031 Filed on May 05, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw