$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

$pnw Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000076462224000016 Filed on February 27, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$951.7M	$991.6M	$4.696B
YoY Change	0.72%	-1.76%	8.59%
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	$226.4M	$217.9M	$854.1M
YoY Change	8.45%	6.37%	4.44%
% of Gross Profit
Operating Expenses	$884.9M	$917.2M	$3.871B
YoY Change	-1.04%	-5.69%	7.76%
Operating Profit	$66.79M		$824.6M
YoY Change	31.7%		12.67%
Interest Expense	$86.63M	-$69.29M	$331.3M
YoY Change	14.9%	-2.07%	29.66%
% of Operating Profit	129.71%		40.18%
Other Income/Expense, Net	$44.90M	$2.197M	$102.4M
YoY Change	67.09%	-60.51%	3.12%
Pretax Income	$25.06M	$7.070M	$595.7M
YoY Change	1043.2%	-124.86%	3.48%
Income Tax	$3.891M	$2.787M	$76.91M
% Of Pretax Income	15.53%	39.42%	12.91%
Net Earnings	$21.17M	-$23.00K	$518.8M
YoY Change	1997.92%	-99.9%	3.59%
Net Earnings / Revenue	2.22%	0.0%	11.05%
Basic Earnings Per Share	$0.15		$4.42
Diluted Earnings Per Share	$0.15	$0.00	$4.41
COMMON SHARES
Basic Shares Outstanding	113.4M shares	113.4M shares	113.4M shares
Diluted Shares Outstanding	114.2M shares		113.8M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$9.634M	$4.955M	$4.955M
YoY Change	38.6%	2.55%	2.55%
Cash & Equivalents	$9.634M	$4.955M	$4.955M
Short-Term Investments
Other Short-Term Assets	$131.3M	$101.4M	$936.7M
YoY Change	69.25%	68.77%	9.99%
Inventory	$489.2M	$493.5M	$493.5M
Prepaid Expenses
Receivables	$406.5M	$491.5M	$491.5M
Other Receivables	$0.00	$332.0K	$332.0K
Total Short-Term Assets	$1.782B	$1.927B	$1.927B
YoY Change	1.92%	10.08%	10.08%
LONG-TERM ASSETS
Property, Plant & Equipment	$15.87B	$15.80B	$19.02B
YoY Change	9.04%	8.82%	9.35%
Goodwill
YoY Change
Intangibles	$512.9M	$267.1M
YoY Change	96.92%	3.18%
Long-Term Investments
YoY Change
Other Assets	$106.8M	$102.8M	$3.444B
YoY Change	-27.54%	-18.16%	3.84%
Total Long-Term Assets	$23.07B	$22.73B	$22.73B
YoY Change	5.65%	8.4%	8.4%
TOTAL ASSETS
Total Short-Term Assets	$1.782B	$1.927B	$1.927B
Total Long-Term Assets	$23.07B	$22.73B	$22.73B
Total Assets	$24.85B	$24.66B	$24.66B
YoY Change	5.37%	8.53%	8.53%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$476.6M	$442.5M	$442.5M
YoY Change	31.88%	2.79%	2.79%
Accrued Expenses	$143.1M	$140.8M	$140.8M
YoY Change	4.24%	-15.4%	-15.4%
Deferred Revenue	$42.06M	$42.04M
YoY Change	2.12%	0.64%
Short-Term Debt	$793.5M	$609.5M	$609.5M
YoY Change	59.48%	78.89%	78.89%
Long-Term Debt Due	$875.0M	$875.0M	$875.0M
YoY Change	1338.65%	1626.35%	1626.35%
Total Short-Term Liabilities	$3.056B	$2.889B	$2.889B
YoY Change	77.22%	63.97%	63.97%
LONG-TERM LIABILITIES
Long-Term Debt	$7.542B	$7.541B	$7.541B
YoY Change	-4.73%	-2.59%	-2.59%
Other Long-Term Liabilities	$248.8M	$251.5M	$5.272B
YoY Change	-3.04%	-0.27%	17.29%
Total Long-Term Liabilities	$7.791B	$7.792B	$12.81B
YoY Change	-4.68%	-2.52%	4.71%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.056B	$2.889B	$2.889B
Total Long-Term Liabilities	$7.791B	$7.792B	$12.81B
Total Liabilities	$10.85B	$10.68B	$18.48B
YoY Change	9.59%	9.49%	10.85%
SHAREHOLDERS EQUITY
Retained Earnings	$3.483B	$3.466B
YoY Change	3.76%	3.15%
Common Stock	$2.758B	$2.753B
YoY Change	0.98%	1.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$9.073M	$8.185M
YoY Change	21.77%	63.54%
Treasury Stock Shares
Shareholders Equity	$6.199B	$6.178B	$6.178B
YoY Change
Total Liabilities & Shareholders Equity	$24.85B	$24.66B	$24.66B
YoY Change	5.37%	8.53%	8.53%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$21.17M	-$23.00K	$518.8M
YoY Change	1997.92%	-99.9%	3.59%
Depreciation, Depletion And Amortization	$226.4M	$217.9M	$854.1M
YoY Change	8.45%	6.37%	4.44%
Cash From Operating Activities	$347.4M	$373.8M	$1.208B
YoY Change	64.15%	78.4%	-2.72%
INVESTING ACTIVITIES
Capital Expenditures	$517.8M	$531.8M	$1.846B
YoY Change	16.3%	23.5%	8.13%
Acquisitions
YoY Change
Other Investing Activities	$939.0K	$73.50M	$6.458M
YoY Change	-95.29%	113.17%	-58.63%
Cash From Investing Activities	-$424.1M	-$458.3M	-$1.694B
YoY Change	-6.43%	15.7%	4.71%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			-$4.093M
YoY Change			54.28%
Debt Paid & Issued, Net			$32.74M
YoY Change			-78.17%
Cash From Financing Activities	$81.42M	74.39M	$486.7M
YoY Change	-66.6%	-59.66%	31.01%
NET CHANGE
Cash From Operating Activities	$347.4M	373.8M	$1.208B
Cash From Investing Activities	-$424.1M	-458.3M	-$1.694B
Cash From Financing Activities	$81.42M	74.39M	$486.7M
Net Change In Cash	$4.679M	-10.15M	$123.0K
YoY Change	120.81%	361.5%	-102.39%
FREE CASH FLOW
Cash From Operating Activities	$347.4M	$373.8M	$1.208B
Capital Expenditures	$517.8M	$531.8M	$1.846B
Free Cash Flow	-$170.4M	-$158.0M	-$638.7M
YoY Change	-27.04%	-28.52%	37.04%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	460561000	usd
CY2022Q4	pnw	Other Regulatory Assets Current OtherRegulatoryAssetsCurrent	78318000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	60091000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	1750554000	usd
CY2022Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1073410000	usd
CY2022Q4	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	44394000	usd
CY2022Q4	pnw	Public Utilities Property Plant And Equipment Sale Leaseback Net PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet	90296000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	267110000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000764622
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000764622
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Document Annual Report DocumentAnnualReport	true
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	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-8962
CY2023	dei	Entity Registrant Name EntityRegistrantName	PINNACLE WEST CAPITAL CORPORATION
CY2023	dei	Entity Registrant Name EntityRegistrantName	PINNACLE WEST CAPITAL CORPORATION
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	86-0512431
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	AZ
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	AZ
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	400 North Fifth Street, P.O. Box 53999
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	400 North Fifth Street, P.O. Box 53999
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Phoenix
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Phoenix
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	AZ
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	AZ
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	85072-3999
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	85072-3999
CY2023	dei	City Area Code CityAreaCode	(602)
CY2023	dei	City Area Code CityAreaCode	(602)
CY2023	dei	Local Phone Number LocalPhoneNumber	250-1000
CY2023	dei	Security12b Title Security12bTitle	Common Stock,No Par Value
CY2023	dei	Trading Symbol TradingSymbol	PNW
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
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
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	9215155738	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	113427367	shares
CY2023	dei	Auditor Firm AuditorFirmId	34
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	Tempe, Arizona
CY2023	us-gaap	Revenues Revenues	4695991000	usd
CY2022	us-gaap	Revenues Revenues	4324385000	usd
CY2021	us-gaap	Revenues Revenues	3803835000	usd
CY2023	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1792657000	usd
CY2022	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1629343000	usd
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1152551000	usd
CY2023	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	1058725000	usd
CY2022	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	987072000	usd
CY2021	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	954067000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	794043000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	753195000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	650875000	usd
CY2023	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	224013000	usd
CY2022	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	220370000	usd
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	234639000	usd
CY2023	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1913000	usd
CY2022	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2494000	usd
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6393000	usd
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	3871351000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	3592474000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	2998525000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	824640000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	731911000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	805310000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	53118000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	45263000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	41737000	usd
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-40648000	usd
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-98487000	usd
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-112541000	usd
CY2023	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	33666000	usd
CY2022	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	7916000	usd
CY2021	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	45100000	usd
CY2023	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25056000	usd
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	52385000	usd
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25396000	usd
CY2023	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	102376000	usd
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	99281000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	173982000	usd
CY2023	us-gaap	Interest Costs Incurred InterestCostsIncurred	374887000	usd
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
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	9215155738	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	113427367	shares
CY2023	dei	Auditor Firm AuditorFirmId	34
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	Tempe, Arizona
CY2023	us-gaap	Revenues Revenues	4695991000	usd
CY2022	us-gaap	Revenues Revenues	4324385000	usd
CY2021	us-gaap	Revenues Revenues	3803835000	usd
CY2023	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1792657000	usd
CY2022	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1629343000	usd
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1152551000	usd
CY2023	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	1058725000	usd
CY2022	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	987072000	usd
CY2021	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	954067000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	794043000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	753195000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	650875000	usd
CY2023	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	224013000	usd
CY2022	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	220370000	usd
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	234639000	usd
CY2023	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1913000	usd
CY2022	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2494000	usd
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6393000	usd
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	3871351000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	3592474000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	2998525000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	824640000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	731911000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	805310000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	53118000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	45263000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	41737000	usd
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-40648000	usd
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-98487000	usd
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-112541000	usd
CY2023	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	33666000	usd
CY2022	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	7916000	usd
CY2021	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	45100000	usd
CY2023	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25056000	usd
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	52385000	usd
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25396000	usd
CY2023	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	102376000	usd
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	99281000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	173982000	usd
CY2023	us-gaap	Interest Costs Incurred InterestCostsIncurred	374887000	usd
CY2022	us-gaap	Interest Costs Incurred InterestCostsIncurred	283569000	usd
CY2021	us-gaap	Interest Costs Incurred InterestCostsIncurred	254314000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	43564000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	21052000	usd
CY2023	us-gaap	Interest Expense InterestExpense	331323000	usd
CY2022	us-gaap	Interest Expense InterestExpense	255539000	usd
CY2021	us-gaap	Interest Expense InterestExpense	233262000	usd
CY2023	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	595693000	usd
CY2022	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	575653000	usd
CY2021	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	746030000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	501557000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	483602000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	113442000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113804000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113416000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113192000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.42
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.27
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.48
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.41
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.47
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2022	us-gaap	Interest Costs Incurred InterestCostsIncurred	283569000	usd
CY2021	us-gaap	Interest Costs Incurred InterestCostsIncurred	254314000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	43564000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	28030000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	21052000	usd
CY2023	us-gaap	Interest Expense InterestExpense	331323000	usd
CY2022	us-gaap	Interest Expense InterestExpense	255539000	usd
CY2021	us-gaap	Interest Expense InterestExpense	233262000	usd
CY2023	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	595693000	usd
CY2022	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	575653000	usd
CY2021	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	746030000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	501557000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	483602000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	618720000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	113442000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	113196000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112910000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113804000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113416000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113192000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.42
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.27
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.48
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.41
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.47
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-234000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-615000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-360000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	713000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1873000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1095000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-7078000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2256000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6840000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	499848000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	507028000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4955000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4832000	usd
CY2023Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	513892000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-234000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-615000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-360000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	713000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1873000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1095000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-7078000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2256000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6840000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17224000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	499848000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	507028000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4955000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4832000	usd
CY2023Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	513892000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	167553000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	164764000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	22433000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	23778000	usd
CY2023Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	444344000	usd
CY2022Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	410481000	usd
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	332000	usd
CY2023Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	6808000	usd
CY2023Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group Current AssetsHeldForSaleNotPartOfDisposalGroupCurrent	35139000	usd
CY2023Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	463195000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	101417000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	1926967000	usd
CY2023Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1201246000	usd
CY2023Q4	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	362781000	usd
CY2022Q4	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	347231000	usd
CY2023Q4	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	0	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	102845000	usd
CY2023Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	1666872000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	24211167000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8408040000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15803127000	usd
CY2023Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	264624000	usd
CY2022Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	260754000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	885505000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	817961000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	258880000	usd
CY2023Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	118074000	usd
CY2022Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	126157000	usd
CY2023Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	99490000	usd
CY2022Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	100119000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	17980157000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	16854354000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1390279000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1283221000	usd
CY2022Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	453209000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	167553000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	164764000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	22433000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	23778000	usd
CY2023Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	444344000	usd
CY2022Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	410481000	usd
CY2023Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	49203000	usd
CY2022Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	40155000	usd
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	332000	usd
CY2023Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	6808000	usd
CY2022Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	87835000	usd
CY2023Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group Current AssetsHeldForSaleNotPartOfDisposalGroupCurrent	35139000	usd
CY2022Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group Current AssetsHeldForSaleNotPartOfDisposalGroupCurrent	0	usd
CY2023Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	463195000	usd
CY2023Q4	pnw	Other Regulatory Assets Current OtherRegulatoryAssetsCurrent	162562000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	101417000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	1926967000	usd
CY2023Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	1201246000	usd
CY2023Q4	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	362781000	usd
CY2022Q4	pnw	Coal Reclamationand Union Trust CoalReclamationandUnionTrust	347231000	usd
CY2023Q4	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	0	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	102845000	usd
CY2023Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	1666872000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	24211167000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8408040000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15803127000	usd
CY2023Q4	pnw	Construction Work In Progress Gross ConstructionWorkInProgressGross	1724004000	usd
CY2023Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	264624000	usd
CY2022Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	260754000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	885505000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	817961000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	258880000	usd
CY2023Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	118074000	usd
CY2022Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	126157000	usd
CY2023Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	99490000	usd
CY2022Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	100119000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	17980157000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	16854354000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1390279000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1283221000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1309975000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	801688000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	323438000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	396599000	usd
CY2023Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	63465000	usd
CY2022Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	46282000	usd
CY2023Q4	pnw	Total Deferred Debits TotalDeferredDebits	3087157000	usd
CY2022Q4	pnw	Total Deferred Debits TotalDeferredDebits	2527790000	usd
CY2023Q4	us-gaap	Assets Assets	24661153000	usd
CY2022Q4	us-gaap	Assets Assets	22723405000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	442455000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1309975000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	801688000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	323438000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	396599000	usd
CY2023Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	63465000	usd
CY2022Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	46282000	usd
CY2023Q4	pnw	Total Deferred Debits TotalDeferredDebits	3087157000	usd
CY2022Q4	pnw	Total Deferred Debits TotalDeferredDebits	2527790000	usd
CY2023Q4	us-gaap	Assets Assets	24661153000	usd
CY2022Q4	us-gaap	Assets Assets	22723405000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	442455000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	430425000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	166833000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	164440000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	72916000	usd
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	61217000	usd
CY2023Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	99813000	usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	97895000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	609500000	usd
CY2023Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	875000000	usd
CY2022Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	50685000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	42037000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	41769000	usd
CY2023Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	80913000	usd
CY2022Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	37697000	usd
CY2023Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	28550000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	12232000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	67883000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	105210000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	209923000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	271575000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	193524000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	148276000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2889347000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1762141000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7540622000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7741286000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2416480000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2384421000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1965865000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2061776000	usd
CY2023Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	937451000	usd
CY2022Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	785530000	usd
CY2023Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	112702000	usd
CY2022Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	116286000	usd
CY2023Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	42975000	usd
CY2022Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	4749000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	533580000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	422103000	usd
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	184007000	usd
CY2022Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	179255000	usd
CY2023Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	257743000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	430425000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	166833000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	164440000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	72916000	usd
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	61217000	usd
CY2023Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	99813000	usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	97895000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	609500000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	340720000	usd
CY2023Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	875000000	usd
CY2022Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	50685000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	42037000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	41769000	usd
CY2023Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	80913000	usd
CY2022Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	37697000	usd
CY2023Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	28550000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	12232000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	67883000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	105210000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	209923000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	271575000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	193524000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	148276000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2889347000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1762141000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7540622000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7741286000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2416480000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2384421000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1965865000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2061776000	usd
CY2023Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	937451000	usd
CY2022Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	785530000	usd
CY2023Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	112702000	usd
CY2022Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	116286000	usd
CY2023Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	42975000	usd
CY2022Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	4749000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	533580000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	422103000	usd
CY2023Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	184007000	usd
CY2022Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	179255000	usd
CY2023Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	257743000	usd
CY2022Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	180677000	usd
CY2023Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	33861000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	38658000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1210189000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	639247000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	251469000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	247400000	usd
CY2023Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	7946322000	usd
CY2022Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	7060102000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	180677000	usd
CY2023Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	33861000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	38658000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1210189000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	639247000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	251469000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	247400000	usd
CY2023Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	7946322000	usd
CY2022Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	7060102000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	113537689	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	113247189	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	2752676000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	113272	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	73613	shares
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8185000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	5005000	usd
CY2023Q4	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2744491000	usd
CY2022Q4	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2719735000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3466317000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3360347000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-33144000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-31435000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	6177664000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6048647000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	107198000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	111229000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6284862000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6159876000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24661153000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	22723405000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	6423000	usd
CY2022	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	usd
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	854136000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	817814000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	719141000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-549877000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-291992000	usd
CY2021	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-256871000	usd
CY2023	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	547243000	usd
CY2022	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	219579000	usd
CY2021	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	44557000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	53118000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	45263000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	41737000	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	113537689	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	113247189	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	2752676000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	2724740000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	113272	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	73613	shares
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8185000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	5005000	usd
CY2023Q4	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2744491000	usd
CY2022Q4	pnw	Common Stock Value Common And Treasury CommonStockValueCommonAndTreasury	2719735000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3466317000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3360347000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-33144000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-31435000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	6177664000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6048647000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	107198000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	111229000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6284862000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6159876000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24661153000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	22723405000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	6423000	usd
CY2022	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	usd
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	854136000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	817814000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	719141000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-549877000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-291992000	usd
CY2023	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	547243000	usd
CY2022	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	219579000	usd
CY2021	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	44557000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	53118000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	45263000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	41737000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-24310000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	43202000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	117471000	usd
CY2023	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	77065000	usd
CY2022	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	-5893000	usd
CY2021	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	-4802000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	777000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-777000	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	17341000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-24310000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	43202000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	117471000	usd
CY2023	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	77065000	usd
CY2022	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	-5893000	usd
CY2021	pnw	Deferred Investment Tax Credit Expense DeferredInvestmentTaxCreditExpense	-4802000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	777000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-777000	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	17341000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	15942000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	18460000	usd
CY2023	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	61983000	usd
CY2022	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	63869000	usd
CY2021	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	72559000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	2789000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	30784000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	1783000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	42911000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	83469000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	32870000	usd
CY2023	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-13754000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	6572000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	722000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	19550000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-76089000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	22770000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-75623000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	90076000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	20267000	usd
CY2023	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	2393000	usd
CY2022	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-4205000	usd
CY2021	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	9094000	usd
CY2023	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	40510000	usd
CY2022	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1856000	usd
CY2021	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-51736000	usd
CY2023	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-53112000	usd
CY2022	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-12432000	usd
CY2021	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	17012000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	28495000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-332470000	usd
CY2021	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	57549000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	195598000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-159030000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	345470000	usd
CY2023	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-90525000	usd
CY2022	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-105359000	usd
CY2021	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-116009000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	63080000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	170359000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	78219000	usd
CY2023	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-65779000	usd
CY2021	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	105654000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	23400000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	15942000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	18460000	usd
CY2023	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	61983000	usd
CY2022	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	63869000	usd
CY2021	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	72559000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	2789000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	30784000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	1783000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	42911000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	83469000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	32870000	usd
CY2023	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-13754000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	6572000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	722000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	19550000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-76089000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	22770000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-75623000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	90076000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	20267000	usd
CY2023	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	2393000	usd
CY2022	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-4205000	usd
CY2021	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	9094000	usd
CY2023	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	40510000	usd
CY2022	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1856000	usd
CY2021	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-51736000	usd
CY2023	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-53112000	usd
CY2022	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-12432000	usd
CY2021	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	17012000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	28495000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-332470000	usd
CY2021	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	57549000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	195598000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-159030000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	345470000	usd
CY2023	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-90525000	usd
CY2022	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-105359000	usd
CY2021	pnw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-116009000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	63080000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	170359000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	78219000	usd
CY2023	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-65779000	usd
CY2022	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-103671000	usd
CY2021	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-108365000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1207697000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1241441000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	860014000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1846370000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1707490000	usd
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1473475000	usd
CY2023	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	180866000	usd
CY2022	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	137436000	usd
CY2022	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-103671000	usd
CY2021	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-108365000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1207697000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1241441000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	860014000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1846370000	usd
CY2023	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	180866000	usd
CY2022	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	137436000	usd
CY2021	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	105654000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	23400000	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2023	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-43564000	usd
CY2022	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-28030000	usd
CY2021	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-21052000	usd
CY2023	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1679722000	usd
CY2022	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1207713000	usd
CY2021	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1720966000	usd
CY2023	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1681845000	usd
CY2022	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1212063000	usd
CY2021	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1725480000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6458000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	15612000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-6458000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1694249000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1618046000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1386929000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	689349000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	875537000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	746999000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	32740000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	150000000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2023	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	241900000	usd
CY2022	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	48720000	usd
CY2021	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	142000000	usd
CY2023	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	usd
CY2022	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	usd
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	19000000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	386486000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	378881000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	369478000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4093000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-2653000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-2350000	usd
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	486675000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	371468000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	476916000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	123000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5137000	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2023	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-43564000	usd
CY2022	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-28030000	usd
CY2021	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-21052000	usd
CY2023	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1679722000	usd
CY2022	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1207713000	usd
CY2021	pnw	Proceedsfrom Decommissioning Trust Fund Assets And Other Special Use Funds ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds	1720966000	usd
CY2023	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1681845000	usd
CY2022	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1212063000	usd
CY2021	pnw	Paymentsto Acquire Investmentstobe Heldin Decommissioning Trust Fund And Other Special Use Funds PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds	1725480000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6458000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	15612000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-6458000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1694249000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1618046000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1386929000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	689349000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	875537000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	746999000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	32740000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	150000000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2023	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	241900000	usd
CY2022	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	48720000	usd
CY2021	pnw	Proceeds From Repayments Of Short Term Debt Net ProceedsFromRepaymentsOfShortTermDebtNet	142000000	usd
CY2023	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	usd
CY2022	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	usd
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	19000000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	386486000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	378881000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	369478000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-4093000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-2653000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-2350000	usd
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21255000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	486675000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	371468000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	476916000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	123000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5137000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-49999000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4832000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59968000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4955000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4832000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9969000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7935000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.36
CY2021	pnw	Dividends Common Stock Net DividendsCommonStockNet	379108000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-49999000	usd
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	25261000	usd
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4655000	usd
CY2021	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	4543000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6021460000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23426000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.43
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4832000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9969000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59968000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4955000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4832000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9969000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	635944000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7935000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.36
CY2021	pnw	Dividends Common Stock Net DividendsCommonStockNet	379108000	usd
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	25261000	usd
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4655000	usd
CY2021	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	4543000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6021460000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	500826000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23426000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.43
CY2022	pnw	Dividends Common Stock Net DividendsCommonStockNet	387975000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	21996000	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	5152000	usd
CY2022	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	6548000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2022	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6159876000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1709000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.49
CY2023	pnw	Dividends Common Stock Net DividendsCommonStockNet	395585000	usd
CY2023	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	27936000	usd
CY2023	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	5466000	usd
CY2023	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	2287000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2023	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6284862000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:700;line-height:120%">Accounting Records and Use of Estimates</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%"> </span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%">Our accounting records are maintained in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%">those estimates. To conform with the current year’s disaggregated presentation of significant changes in assets and liabilities and the aggregation of less significant changes in assets and liabilities, we made certain reclassifications for the year ended December 31, 2022, within the operating activities section of our Consolidated Statements of Cash Flows.</span></div>
CY2022	pnw	Dividends Common Stock Net DividendsCommonStockNet	387975000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	21996000	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	5152000	usd
CY2022	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	6548000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2022	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6159876000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	518781000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1709000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.49
CY2023	pnw	Dividends Common Stock Net DividendsCommonStockNet	395585000	usd
CY2023	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	27936000	usd
CY2023	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	5466000	usd
CY2023	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	2287000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	21255000	usd
CY2023	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6284862000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:700;line-height:120%">Accounting Records and Use of Estimates</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%"> </span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%">Our accounting records are maintained in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11.5pt;font-weight:400;line-height:120%">those estimates. To conform with the current year’s disaggregated presentation of significant changes in assets and liabilities and the aggregation of less significant changes in assets and liabilities, we made certain reclassifications for the year ended December 31, 2022, within the operating activities section of our Consolidated Statements of Cash Flows.</span></div>
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	90000000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	84000000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	90000000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	669000000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	632000000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	575000000	usd
CY2023	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0298
CY2022	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0303
CY2021	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0287
CY2023	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	669000000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	632000000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold Depreciation CostOfGoodsAndServicesSoldDepreciation	575000000	usd
CY2023	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0298
CY2022	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0303
CY2021	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0287
CY2023	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	28262000	usd
CY2022	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	usd
CY2021	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	84000000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	90000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	75000000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0629
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0575
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0675
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	90000000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0629
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0575
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0675
CY2023	pnw	Income Tax Percentage Likelihood Largest Tax Benefit Amountis Realized IncomeTaxPercentageLikelihoodLargestTaxBenefitAmountisRealized	0.50
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8788000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	46227000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	229000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	310996000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	245271000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	227584000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	206269000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	114999000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	167733000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	99813000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	97895000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	95988000	usd
CY2023	pnw	Income Tax Percentage Likelihood Largest Tax Benefit Amountis Realized IncomeTaxPercentageLikelihoodLargestTaxBenefitAmountisRealized	0.50
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8788000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	46227000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	229000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	310996000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	245271000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	227584000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	206269000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	114999000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	167733000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	99813000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	97895000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	95988000	usd
CY2023	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	28262000	usd
CY2022	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	usd
CY2021	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	75000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	49000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	23000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	11000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P5Y
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4695991000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4324385000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3803835000	usd
CY2023	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	45000000	usd
CY2022	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	22000000	usd
CY2021	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	44000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	23778000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	25354000	usd
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	19782000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	23399000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	17006000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	22251000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	24744000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	18582000	usd
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	16679000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	49000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	23000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	11000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P5Y
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4695991000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4324385000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3803835000	usd
CY2023	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	45000000	usd
CY2022	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	22000000	usd
CY2021	pnw	Regulatory Cost Recovery Revenue RegulatoryCostRecoveryRevenue	44000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	23778000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	25354000	usd
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	19782000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	23399000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	17006000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	22251000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	24744000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	18582000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	22433000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	23778000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	25354000	usd
CY2023Q4	us-gaap	Regulatory Assets RegulatoryAssets	2016036000	usd
CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	1822100000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	625757000	usd
CY2022Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	538879000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1390279000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1283221000	usd
CY2023Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2175788000	usd
CY2022Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2333351000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	209923000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	271575000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1965865000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2061776000	usd
CY2023	pnw	Income Tax Expense Benefit Attributable To Non Controlling Interests IncomeTaxExpenseBenefitAttributableToNonControllingInterests	0	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	22433000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	23778000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	25354000	usd
CY2023Q4	us-gaap	Regulatory Assets RegulatoryAssets	2016036000	usd
CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	1822100000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	625757000	usd
CY2022Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	538879000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1390279000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1283221000	usd
CY2023Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2175788000	usd
CY2022Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2333351000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	209923000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	271575000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1965865000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2061776000	usd
CY2023	pnw	Income Tax Expense Benefit Attributable To Non Controlling Interests IncomeTaxExpenseBenefitAttributableToNonControllingInterests	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	43097000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45086000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45655000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1473000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1399000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3305000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	419000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	43097000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45086000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45655000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1473000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1399000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3305000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	419000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2069000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1449000	usd
CY2023	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	-661000	usd
CY2022	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	3495000	usd
CY2021	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	2659000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1376000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1962000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2664000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44274000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	43097000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45086000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28762000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28246000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	26300000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	452000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-139000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-535000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1633000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1181000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1320000	usd
CY2023Q4	pnw	Unrecognized Tax Benefits Interest On Income Taxes Receivable UnrecognizedTaxBenefitsInterestOnIncomeTaxesReceivable	1000000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	21272000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	35617000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5041000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2854000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1950000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2458000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	24126000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	37567000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2583000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2069000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1449000	usd
CY2023	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	-661000	usd
CY2022	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	3495000	usd
CY2021	pnw	Unrecognized Tax Benefits Changes In Judgment From Prior Period Tax Positions UnrecognizedTaxBenefitsChangesInJudgmentFromPriorPeriodTaxPositions	2659000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1376000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1962000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2664000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44274000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	43097000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	45086000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28762000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28246000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	26300000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	452000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-139000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-535000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1633000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1181000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1320000	usd
CY2023Q4	pnw	Unrecognized Tax Benefits Interest On Income Taxes Receivable UnrecognizedTaxBenefitsInterestOnIncomeTaxesReceivable	1000000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	21272000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	35617000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5041000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2854000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1950000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2458000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	24126000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	37567000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2583000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	37273000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	23693000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	95327000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	15513000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	13567000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17342000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	37273000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	23693000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	15513000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	13567000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17342000	usd
CY2023	pnw	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	52786000	usd
CY2021	pnw	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	112669000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	125095000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	120887000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	156666000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	18024000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	17740000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	22656000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-3513000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-5482000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-7015000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	0	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	0	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	-5915000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36558000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36241000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36558000	usd
CY2023	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	5964000	usd
CY2022	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	4629000	usd
CY2021	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	4180000	usd
CY2023	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2022	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	9495000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	5608000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	7620000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	8441000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	3146000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	3064000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	3453000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	7721000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	3912000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4834000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2644000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2645000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	31411000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	8826000	usd
CY2023Q4	pnw	Deferred Tax Assets Excess Deferred Income Taxes DeferredTaxAssetsExcessDeferredIncomeTaxes	283161000	usd
CY2022Q4	pnw	Deferred Tax Assets Excess Deferred Income Taxes DeferredTaxAssetsExcessDeferredIncomeTaxes	295014000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Asset Retirement Obligation And Removal Costs DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts	113312000	usd
CY2023	pnw	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	52786000	usd
CY2022	pnw	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	37260000	usd
CY2021	pnw	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	112669000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	125095000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	120887000	usd
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CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	18024000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	17740000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	22656000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-3513000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-5482000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation State Income Tax Credit Net Of Federal Income Tax EffectiveIncomeTaxRateReconciliationStateIncomeTaxCreditNetOfFederalIncomeTax	-7015000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	0	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	0	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Benefit Amount EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackBenefitAmount	-5915000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36558000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36241000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Excess Deferred Income Taxes Amount EffectiveIncomeTaxRateReconciliationExcessDeferredIncomeTaxesAmount	-36558000	usd
CY2023	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	5964000	usd
CY2022	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	4629000	usd
CY2021	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	4180000	usd
CY2023	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2022	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3617000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	9495000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	5608000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	7620000	usd
CY2023	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	8441000	usd
CY2022	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	3146000	usd
CY2021	pnw	Effective Income Tax Rate Reconciliation Tax Credit Federal Production Tax Credit Amount EffectiveIncomeTaxRateReconciliationTaxCreditFederalProductionTaxCreditAmount	3064000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	3453000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	7721000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	3912000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4834000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2644000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2645000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76912000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	74827000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	110086000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	31411000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	8826000	usd
CY2023Q4	pnw	Deferred Tax Assets Excess Deferred Income Taxes DeferredTaxAssetsExcessDeferredIncomeTaxes	283161000	usd
CY2022Q4	pnw	Deferred Tax Assets Excess Deferred Income Taxes DeferredTaxAssetsExcessDeferredIncomeTaxes	295014000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Asset Retirement Obligation And Removal Costs DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts	113312000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Asset Retirement Obligation And Removal Costs DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts	107104000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Unamortized Investment Tax Credits DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits	68521000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Unamortized Investment Tax Credits DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits	48035000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other Postretirement Benefits DeferredTaxAssetsRegulatoryLiabilitiesOtherPostretirementBenefits	56070000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7540622000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7741286000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Asset Retirement Obligation And Removal Costs DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts	107104000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Unamortized Investment Tax Credits DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits	68521000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Unamortized Investment Tax Credits DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits	48035000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other Postretirement Benefits DeferredTaxAssetsRegulatoryLiabilitiesOtherPostretirementBenefits	56070000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other Postretirement Benefits DeferredTaxAssetsRegulatoryLiabilitiesOtherPostretirementBenefits	66893000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	39857000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	62915000	usd
CY2023Q4	pnw	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	316067000	usd
CY2022Q4	pnw	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	184030000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	33294000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	33674000	usd
CY2023Q4	pnw	Deferred Tax Assets Coal Reclamation Liabilities DeferredTaxAssetsCoalReclamationLiabilities	45505000	usd
CY2022Q4	pnw	Deferred Tax Assets Coal Reclamation Liabilities DeferredTaxAssetsCoalReclamationLiabilities	44312000	usd
CY2023Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	17261000	usd
CY2022Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	19948000	usd
CY2023Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	43940000	usd
CY2022Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	37647000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	77865000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	72605000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1126264000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	981003000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2518164000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1682000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	32648000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Pension And Other Postretirement Assets DeferredTaxLiabilitiesPensionAndOtherPostretirementAssets	78853000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Pension And Other Postretirement Assets DeferredTaxLiabilitiesPensionAndOtherPostretirementAssets	96845000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Other Special Use Funds DeferredTaxLiabilitiesOtherSpecialUseFunds	56550000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Other Special Use Funds DeferredTaxLiabilitiesOtherSpecialUseFunds	57572000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	316067000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Allowance For Equity Funds Used During Construction DeferredTaxLiabilitiesRegulatoryAssetsAllowanceForEquityFundsUsedDuringConstruction	46754000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power Mark To Market DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket	149078000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power Mark To Market DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket	114232000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Pension And Other Postretirement Benefits DeferredTaxLiabilitiesRegulatoryAssetsPensionAndOtherPostretirementBenefits	172239000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Pension And Other Postretirement Benefits DeferredTaxLiabilitiesRegulatoryAssetsPensionAndOtherPostretirementBenefits	157629000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Retired Power Plan Costs DeferredTaxLiabilitiesRegulatoryAssetsRetiredPowerPlanCosts	20659000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Retired Power Plan Costs DeferredTaxLiabilitiesRegulatoryAssetsRetiredPowerPlanCosts	24397000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Other DeferredTaxLiabilitiesRegulatoryAssetsOther	92260000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Other DeferredTaxLiabilitiesRegulatoryAssetsOther	103023000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	36107000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	32479000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3542744000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3365424000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2416480000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2384421000	usd
CY2023	pnw	Increase Decrease In Deferred Income Taxes Due To Regulation Adoption IncreaseDecreaseInDeferredIncomeTaxesDueToRegulationAdoption	-12000000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other Postretirement Benefits DeferredTaxAssetsRegulatoryLiabilitiesOtherPostretirementBenefits	66893000	usd
CY2023Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	39857000	usd
CY2022Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	62915000	usd
CY2023Q4	pnw	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	316067000	usd
CY2022Q4	pnw	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	184030000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	33294000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	33674000	usd
CY2023Q4	pnw	Deferred Tax Assets Coal Reclamation Liabilities DeferredTaxAssetsCoalReclamationLiabilities	45505000	usd
CY2022Q4	pnw	Deferred Tax Assets Coal Reclamation Liabilities DeferredTaxAssetsCoalReclamationLiabilities	44312000	usd
CY2023Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	17261000	usd
CY2022Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	19948000	usd
CY2023Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	43940000	usd
CY2022Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	37647000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	77865000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	72605000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1126264000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	981003000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2572495000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2518164000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1682000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	32648000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Pension And Other Postretirement Assets DeferredTaxLiabilitiesPensionAndOtherPostretirementAssets	78853000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Pension And Other Postretirement Assets DeferredTaxLiabilitiesPensionAndOtherPostretirementAssets	96845000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Other Special Use Funds DeferredTaxLiabilitiesOtherSpecialUseFunds	56550000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Other Special Use Funds DeferredTaxLiabilitiesOtherSpecialUseFunds	57572000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	316067000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	184030000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Allowance For Equity Funds Used During Construction DeferredTaxLiabilitiesRegulatoryAssetsAllowanceForEquityFundsUsedDuringConstruction	46754000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Allowance For Equity Funds Used During Construction DeferredTaxLiabilitiesRegulatoryAssetsAllowanceForEquityFundsUsedDuringConstruction	44405000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power Mark To Market DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket	149078000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power Mark To Market DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket	114232000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Pension And Other Postretirement Benefits DeferredTaxLiabilitiesRegulatoryAssetsPensionAndOtherPostretirementBenefits	172239000	usd
CY2023Q4	pnw	Deferred Tax Liabilities Regulatory Assets Retired Power Plan Costs DeferredTaxLiabilitiesRegulatoryAssetsRetiredPowerPlanCosts	20659000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Retired Power Plan Costs DeferredTaxLiabilitiesRegulatoryAssetsRetiredPowerPlanCosts	24397000	usd
CY2022Q4	pnw	Deferred Tax Liabilities Regulatory Assets Other DeferredTaxLiabilitiesRegulatoryAssetsOther	103023000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	36107000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	32479000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3542744000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3365424000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2416480000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2384421000	usd
CY2023	pnw	Increase Decrease In Deferred Income Taxes Due To Regulation Adoption IncreaseDecreaseInDeferredIncomeTaxesDueToRegulationAdoption	-12000000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7540622000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7741286000	usd
CY2023Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	8415622000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	7555653000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	7791971000	usd
CY2022Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	6585701000	usd
CY2022Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2022Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2023Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	8415622000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	7555653000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	7791971000	usd
CY2022Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	6585701000	usd
CY2022Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2022Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023Q4	pnw	Defined Benefit Plan Accumulated Benefit Obligation Funded Percentage DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage	1
CY2023Q4	pnw	Defined Benefit Plan Partnership Funding Commitments Maximum Contribution Amount DefinedBenefitPlanPartnershipFundingCommitmentsMaximumContributionAmount	50000000	usd
CY2023	pnw	Defined Benefit Plan Partnership Funding Commitments Funded Amount DefinedBenefitPlanPartnershipFundingCommitmentsFundedAmount	38000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	15357000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0452
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0457
CY2023Q4	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0625
CY2022Q4	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0650
CY2023	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0650
CY2022	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0600
CY2021	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0650
CY2023Q4	pnw	Defined Benefit Plan Ultimate Health Care Cost Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanUltimateHealthCareCostTrendRateusedinCalculatingBenefitObligations	0.0475
CY2022Q4	pnw	Defined Benefit Plan Ultimate Health Care Cost Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanUltimateHealthCareCostTrendRateusedinCalculatingBenefitObligations	0.0475
CY2023Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2022Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2021Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2023	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitObligations	P5Y
CY2022	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitObligations	P6Y
CY2023	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P5Y
CY2022	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P3Y
CY2021	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P4Y
CY2023Q4	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0200
CY2022Q4	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0200
CY2023	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2022	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2021	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0454
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0450
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0452
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0457
CY2023Q4	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0625
CY2022Q4	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0650
CY2023	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0650
CY2022	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0600
CY2021	pnw	Defined Benefit Plan Pre65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0650
CY2023Q4	pnw	Defined Benefit Plan Ultimate Health Care Cost Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanUltimateHealthCareCostTrendRateusedinCalculatingBenefitObligations	0.0475
CY2022Q4	pnw	Defined Benefit Plan Ultimate Health Care Cost Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanUltimateHealthCareCostTrendRateusedinCalculatingBenefitObligations	0.0475
CY2023Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2022Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2021Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0475
CY2023	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitObligations	P5Y
CY2022	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Obligations DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitObligations	P6Y
CY2023	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P5Y
CY2022	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P3Y
CY2021	pnw	Defined Benefit Plan Pre65 Participant Periodafterwhich Rate Reaches Ultimate Trend Rateusedin Calculating Benefit Costs DefinedBenefitPlanPre65ParticipantPeriodafterwhichRateReachesUltimateTrendRateusedinCalculatingBenefitCosts	P4Y
CY2023Q4	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0200
CY2022Q4	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Obligation DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation	0.0200
CY2023	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2022	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2021	pnw	Defined Benefit Plan Post65 Health Care Cost Trend Rate Assumedfor Next Fiscal Year Usedin Calculating Benefit Costs DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitCosts	0.0200
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0454
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0450
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0450
CY2023Q4	pnw	Defined Benefit Plan Partnership Funding Commitments Maximum Contribution Amount DefinedBenefitPlanPartnershipFundingCommitmentsMaximumContributionAmount	50000000	usd
CY2023	pnw	Defined Benefit Plan Partnership Funding Commitments Funded Amount DefinedBenefitPlanPartnershipFundingCommitmentsFundedAmount	38000000	usd
CY2023Q4	pnw	Number Of Lease Agreements Lease And Sell Back NumberOfLeaseAgreementsLeaseAndSellBack	3	lease
CY2023Q1	pnw	Number Of Purchase Power Operating Lease Agreements NumberOfPurchasePowerOperatingLeaseAgreements	2	agreement
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	145890000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	122062000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	135007000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	122040000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	118969000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	21530000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	9928000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3872000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	122951000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	137116000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	148518000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	172344000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	173811000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	899903000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1654643000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	376571000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1278072000	usd
CY2023Q4	pnw	Lease Notyet Commenced Liability Leaseand Nonlease Payments LeaseNotyetCommencedLiabilityLeaseandNonleasePayments	7100000000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	123472000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	118463000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	116661000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	602301000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	500582000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0453
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0221
CY2023Q1	pnw	Number Of Purchase Power Operating Lease Agreements NumberOfPurchasePowerOperatingLeaseAgreements	2	agreement
CY2023Q4	pnw	Number Of Lease Agreements Lease And Sell Back NumberOfLeaseAgreementsLeaseAndSellBack	3	lease
CY2023Q1	pnw	Number Of Purchase Power Operating Lease Agreements NumberOfPurchasePowerOperatingLeaseAgreements	2	agreement
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	145890000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	122062000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	124260000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	135007000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	122040000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	118969000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	21530000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	9928000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3872000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	122951000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	137116000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	148518000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	172344000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	173811000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	899903000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1654643000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	376571000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1278072000	usd
CY2023Q4	pnw	Lease Notyet Commenced Liability Leaseand Nonlease Payments LeaseNotyetCommencedLiabilityLeaseandNonleasePayments	7100000000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	123472000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	118463000	usd
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CY2023	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	135323000	usd
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CY2022	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	220000	shares
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CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113804000	shares
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CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113192000	shares
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CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17000000	usd
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CY2022	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	13229000	usd
CY2021	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	11021000	usd
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CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	27242000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	7326000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	6726000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	6205000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	usd
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CY2023	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	219000	usd
CY2022	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	590000	usd
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CY2023	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	6394000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1	P3Y
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CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	27242000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	7326000	usd
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CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	6205000	usd
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CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	usd
CY2023	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	219000	usd
CY2022	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	590000	usd
CY2023	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	33666000	usd
CY2022	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	7916000	usd
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CY2023	pnw	Nonoperating Costs NonoperatingCosts	15260000	usd
CY2022	pnw	Nonoperating Costs NonoperatingCosts	18619000	usd
CY2021	pnw	Nonoperating Costs NonoperatingCosts	13008000	usd
CY2023	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-3402000	usd
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-20537000	usd
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-1367000	usd
CY2023	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	6394000	usd
CY2022	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	13229000	usd
CY2023	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25056000	usd
CY2023	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25056000	usd
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	52385000	usd
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	25396000	usd
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CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	52385000	usd
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Files In Submission

Name	View Source	Status
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0000764622-24-000016-index.html	Edgar Link	pending
0000764622-24-000016.txt	Edgar Link	pending
0000764622-24-000016-xbrl.zip	Edgar Link	pending
exhibit97.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
pnw-20231231.htm	Edgar Link	pending
pnw-20231231.xsd	Edgar Link	pending
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pnw-20231231_g3.jpg	Edgar Link	pending
pnw-20231231_g4.jpg	Edgar Link	pending
pnw20231231exhibit21.htm	Edgar Link	pending
pnw20231231exhibit231.htm	Edgar Link	pending
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pnw20231231exhibit311.htm	Edgar Link	pending
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pnw20231231exhibit314.htm	Edgar Link	pending
pnw20231231exhibit321pnw.htm	Edgar Link	pending
pnw20231231exhibit322aps.htm	Edgar Link	pending
pnw20231231exhibit49.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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$PNW PINNACLE WEST CAPITAL CORP Stock $pnw

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