$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

$pnw Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000110465914012068 Filed on February 21, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$693.1M	$1.109B	$878.6M
YoY Change	3.78%	-1.37%	9.85%
Cost Of Revenue		$302.9M	$264.7M
YoY Change		-10.36%	8.47%
Gross Profit		$806.6M	$613.9M
YoY Change		2.5%	10.45%
Gross Profit Margin		72.7%	69.87%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$120.7M	$120.9M	$121.2M
YoY Change	-2.43%	-2.81%	-0.98%
% of Gross Profit		14.99%	19.74%
Operating Expenses	$591.8M	$661.5M	$624.1M
YoY Change	0.44%	-4.1%	3.53%
Operating Profit	$101.3M	$448.0M	$254.5M
YoY Change	28.68%	2.98%	29.19%
Interest Expense	-$40.90M	$48.41M	$49.55M
YoY Change	-17.04%	-12.13%	-11.96%
% of Operating Profit	-40.38%	10.81%	19.47%
Other Income/Expense, Net	-$7.300M	$432.0K	$2.683M
YoY Change	192.0%	-90.94%	-18.57%
Pretax Income	$53.10M	$400.0M	$207.6M
YoY Change	97.4%	3.97%	44.18%
Income Tax	$18.16M	$147.1M	$76.69M
% Of Pretax Income	34.19%	36.78%	36.94%
Net Earnings	$22.60M	$252.9M	$130.1M
YoY Change	79.37%	-3.78%	38.65%
Net Earnings / Revenue	3.26%	22.79%	14.81%
Basic Earnings Per Share	$0.21	$2.23	$1.12
Diluted Earnings Per Share	$0.20	$2.21	$1.11
COMMON SHARES
Basic Shares Outstanding	109.7M shares	109.6M shares	109.5M shares
Diluted Shares Outstanding		110.7M shares	110.4M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$26.00M	$79.00M	$11.00M
YoY Change	-23.53%	-86.02%	-88.04%
Cash & Equivalents	$26.20M	$79.48M	$11.23M
Short-Term Investments
Other Short-Term Assets	$37.10M	$28.06M	$374.0M
YoY Change	37.91%	-93.56%	-13.63%
Inventory	$249.0M	$250.0M	$247.0M
Prepaid Expenses
Receivables	$274.0M	$361.0M	$313.0M
Other Receivables	$2.000M	$0.00	$1.000M
Total Short-Term Assets	$1.006B	$1.099B	$947.4M
YoY Change	5.15%	-30.93%	-8.64%
LONG-TERM ASSETS
Property, Plant & Equipment	$9.417B	$9.214B	$9.205B
YoY Change	4.12%	-4.28%	-2.89%
Goodwill
YoY Change
Intangibles	$162.2M	$152.7M
YoY Change	-4.94%
Long-Term Investments
YoY Change
Other Assets	$62.69M	$62.43M	$2.149B
YoY Change	-2.93%	-96.45%	20.66%
Total Long-Term Assets	$12.37B	$12.36B	$12.27B
YoY Change	1.8%	6.94%	7.26%
TOTAL ASSETS
Total Short-Term Assets	$1.006B	$1.099B	$947.4M
Total Long-Term Assets	$12.37B	$12.36B	$12.27B
Total Assets	$13.38B	$13.46B	$13.21B
YoY Change	2.05%	2.36%	5.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$221.3M	$231.2M	$316.0M
YoY Change	-32.32%	-18.03%	16.18%
Accrued Expenses	$49.00M	$51.00M	$61.00M
YoY Change	-10.91%	-8.93%	10.91%
Deferred Revenue
YoY Change
Short-Term Debt	$92.18M	$0.00	$109.0M
YoY Change			1457.14%
Long-Term Debt Due	$123.0M	$90.00M	$58.00M
YoY Change	-74.21%	-89.73%	-93.58%
Total Short-Term Liabilities	$1.084B	$949.3M	$1.104B
YoY Change	-19.3%	-46.76%	-39.69%
LONG-TERM LIABILITIES
Long-Term Debt	$3.199B	$3.339B	$3.371B
YoY Change	5.96%	9.58%	22.06%
Other Long-Term Liabilities	$183.8M	$248.1M	$2.893B
YoY Change	-15.65%	-89.5%	23.63%
Total Long-Term Liabilities	$3.383B	$3.587B	$3.371B
YoY Change	4.51%	-33.68%	-33.92%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.084B	$949.3M	$1.104B
Total Long-Term Liabilities	$3.383B	$3.587B	$3.371B
Total Liabilities	$4.466B	$4.536B	$4.476B
YoY Change	-2.47%	-50.99%	-49.48%
SHAREHOLDERS EQUITY
Retained Earnings	$1.624B	$1.721B
YoY Change	5.84%
Common Stock	$2.467B	$2.456B
YoY Change	0.93%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.211M	$1.440M
YoY Change	-10.73%
Treasury Stock Shares	95.19K shares
Shareholders Equity	$3.973B	$4.056B	$3.778B
YoY Change
Total Liabilities & Shareholders Equity	$13.38B	$13.46B	$13.21B
YoY Change	2.05%	2.36%	5.94%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$22.60M	$252.9M	$130.1M
YoY Change	79.37%	-3.78%	38.65%
Depreciation, Depletion And Amortization	$120.7M	$120.9M	$121.2M
YoY Change	-2.43%	-2.81%	-0.98%
Cash From Operating Activities	$241.6M	$470.9M	$343.3M
YoY Change	17.8%	-2.75%	78.06%
INVESTING ACTIVITIES
Capital Expenditures	-$218.9M	-$245.9M	-$183.8M
YoY Change	-9.21%	-3.95%	-6.08%
Acquisitions
YoY Change
Other Investing Activities	-$1.000M	$7.500M	$4.200M
YoY Change	-85.07%	-85.03%	-93.01%
Cash From Investing Activities	-$219.9M	-$238.4M	-$179.6M
YoY Change	-11.22%	15.73%	32.55%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-75.00M	-164.2M	-173.2M
YoY Change	-84.65%	-184.55%	118.69%
NET CHANGE
Cash From Operating Activities	241.6M	470.9M	343.3M
Cash From Investing Activities	-219.9M	-238.4M	-179.6M
Cash From Financing Activities	-75.00M	-164.2M	-173.2M
Net Change In Cash	-53.30M	68.30M	-9.500M
YoY Change	-89.96%	-85.54%	-56.62%
FREE CASH FLOW
Cash From Operating Activities	$241.6M	$470.9M	$343.3M
Capital Expenditures	-$218.9M	-$245.9M	-$183.8M
Free Cash Flow	$460.5M	$716.8M	$527.1M
YoY Change	3.2%	-3.16%	35.68%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.18
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013Q2	dei	Entity Public Float EntityPublicFloat	6078967225	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="MARGIN: 0in 0in 0pt;"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Accounting Records and Use of Estimates</font></b></p> <p style="MARGIN: 0in 0in 0pt;"> </p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Our accounting records are maintained in accordance with 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 those estimates.</font></p> <p style="MARGIN: 0in 0in 0pt;"> </p> </div>
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.66
CY2013	us-gaap	Revenue Recognition Sales Of Services RevenueRecognitionSalesOfServices	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="MARGIN: 0in 0in 0pt;"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Electric Revenues</font></b></p> <p style="MARGIN: 0in 0in 0pt;"> </p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">We derive electric revenues primarily from sales of electricity to our regulated Native Load customers.  Revenues related to the sale of electricity are generally recorded when service is rendered or electricity is delivered to customers.  The billing of electricity sales to individual Native Load customers is based on the reading of their meters, which occurs on a systematic basis throughout the month.  Unbilled revenues are estimated by applying an average revenue/kWh by customer class to the number of estimated kWhs delivered but not billed.  Differences historically between the actual and estimated unbilled revenues are immaterial.  We exclude sales taxes and franchise fees on electric revenues from both revenue and taxes other than income taxes.</font></p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"> </p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Revenues from our Native Load customers and non-derivative instruments are reported on a gross basis on Pinnacle West’s Consolidated Statements of Income.  In the electricity business, some contracts to purchase energy are netted against other contracts to sell energy.  This is called a “book-out” and usually occurs for contracts that have the same terms (quantities and delivery points) and for which power does not flow.  We net these book-outs, which reduces both revenues and fuel and purchased power costs.</font></p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"> </p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">For the period January 1, 2010 through June 30, 2012, electric revenues also include proceeds for line extension payments for new or upgraded service in accordance with the 2009 Settlement Agreement (see Note 3).  Effective July 1, 2012, as a result of the 2012 Settlement Agreement, these amounts are now recorded as contributions in aid of construction and are not included in electric revenues.</font></p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"> </p> <p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Some of our cost recovery mechanisms are alternative revenue programs.  For alternative revenue programs that meet specified accounting criteria, we recognize revenues when the specific events permitting billing of the additional revenues have been completed.</font></p> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p> </div>
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CY2013	us-gaap	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidy	-823000	USD
CY2012	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	6158000	USD
CY2011	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	6881000	USD
CY2013	pnw	Income Tax Reconciliation Allowance For Equity Funds Used During Construction IncomeTaxReconciliationAllowanceForEquityFundsUsedDuringConstruction	6997000	USD
CY2012	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	11065000	USD
CY2011	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	9636000	USD
CY2013	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	11862000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	529000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-9029000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-4099000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26202000	USD
CY2012Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	277225000	USD
CY2012Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	33764000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	408764000	USD
CY2012Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	66941000	USD
CY2012Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	139022000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	68844000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1082084000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2584166000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	23940000	USD
CY2012Q4	pnw	Deferred Tax Liabilities Regulatory Assets Other DeferredTaxLiabilitiesRegulatoryAssetsOther	68170000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5678000	USD
CY2012	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	994790000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3081264000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	44920000	USD
CY2013Q4	pnw	Deferred Tax Assets Regulatory Liabilities Asset Retirement Obligation And Removal Costs DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts	235959000	USD
CY2013Q4	pnw	Deferred Tax Assets Regulatory Liabilities Unamortized Investment Tax Credits DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits	82116000	USD
CY2013Q4	pnw	Deferred Tax Assets Regulatory Liabilities Other DeferredTaxAssetsRegulatoryLiabilitiesOther	42609000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	198642000	USD
CY2013Q4	pnw	Deferred Tax Assets Renewable Energy Incentives DeferredTaxAssetsRenewableEnergyIncentives	65434000	USD
CY2013Q4	pnw	Deferred Tax Assets Credit And Loss Carryforwards DeferredTaxAssetsCreditAndLossCarryforwards	133070000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	148492000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	951242000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2903730000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	16191000	USD
CY2013Q4	pnw	Deferred Tax Liabilities Regulatory Assets Allowance For Equity Funds Used During Construction DeferredTaxLiabilitiesRegulatoryAssetsAllowanceForEquityFundsUsedDuringConstruction	43058000	USD
CY2013Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPower	8282000	USD
CY2013Q4	pnw	Deferred Tax Liabilities Regulatory Assets Deferred Fuel And Purchased Power Mark To Market DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket	13343000	USD
CY2013Q4	pnw	Deferred Tax Liabilities Regulatory Assets Pension And Other Postretirement Benefits DeferredTaxLiabilitiesRegulatoryAssetsPensionAndOtherPostretirementBenefits	129250000	USD
CY2013Q4	pnw	Deferred Tax Liabilities Regulatory Assets Other DeferredTaxLiabilitiesRegulatoryAssetsOther	93202000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4916000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3211972000	USD
CY2013Q4	pnw	Federal General Business Credits Carryforwards Expiration In2031 Amount FederalGeneralBusinessCreditsCarryforwardsExpirationIn2031Amount	131000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1200000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1200000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1047000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1108000000	USD
CY2012Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	94845000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2796465000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	3322000000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	3337000000	USD
CY2012Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	3875000000	USD
CY2013Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	3579000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	21000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	19000000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	18000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	20000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	17000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	6000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	59000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	111000000	USD
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	620631000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	878576000	USD
CY2012Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	210663000	USD
CY2012Q2	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	216236000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	48007000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	254489000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4645000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76689000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	284000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	130930000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-8257000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	122345000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.07
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.12
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.08
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.07
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.12
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.08
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.11
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	1109475000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	693122000	USD
CY2012Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	220729000	USD
CY2012Q4	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	237141000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	447970000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	101289000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	147116000	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18157000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	252874000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	34905000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	244823000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	22631000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.23
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.24
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.23
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.21
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.24
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2011	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	1009464000	USD
CY2012	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	884769000	USD
CY2011	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	904286000	USD
CY2012	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	404336000	USD
CY2011	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	427054000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.48
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.50
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.45
CY2013Q1	us-gaap	Sales Revenue Net SalesRevenueNet	686652000	USD
CY2013Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	223250000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	86923000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12469000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	32836000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	24444000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.22
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2013Q2	us-gaap	Sales Revenue Net SalesRevenueNet	915822000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	159323000	USD
CY2013Q2	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	229300000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	259812000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	77043000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	139598000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	131207000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.19
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
CY2013Q3	us-gaap	Sales Revenue Net SalesRevenueNet	1152392000	USD
CY2013Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	233323000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	415688000	USD
CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	131912000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	234718000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	226163000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.06
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.06
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.04
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.04
CY2013Q4	us-gaap	Sales Revenue Net SalesRevenueNet	699762000	USD
CY2013Q4	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	238854000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	83900000	USD
CY2013Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9167000	USD
CY2013Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	32814000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	24260000	USD
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.22
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	147408000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6831000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6659000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	2450049000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	2494871000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.69
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.69
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.66
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	159005000	USD
CY2013Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	102207000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110806000	shares
CY2013Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	90000000	USD
CY2013Q4	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue	-49000000	USD
CY2012Q4	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue	-48000000	USD
CY2011Q4	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue	-51000000	USD
CY2012	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	2000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss	-3000000	USD
CY2012	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Gain Loss Deferred As Regulatory Asset Or Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability	-7000000	USD
CY2013	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Gain Loss Deferred As Regulatory Asset Or Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability	10000000	USD
CY2012	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitySettlements	-5000000	USD
CY2013	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitySettlements	10000000	USD
CY2012	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersIntoLevel3	-2000000	USD
CY2012	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersOutOfLevel3	-4000000	USD
CY2013	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersOutOfLevel3	1000000	USD
CY2013	pnw	Fair Value Measurement Inter Level Transfers Amount FairValueMeasurementInterLevelTransfersAmount	0	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.11
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.99
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.09
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.06
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.10
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.10
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	822000	shares
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1017000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	811000	shares
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	851755000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	746508000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	17000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	14000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	20000000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	19000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23000000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25000000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	9000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10000000	USD
CY2011	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1165000	USD
CY2013	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1704000	USD
CY2011	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	96000	USD
CY2012	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1606000	USD
CY2011	pnw	Nonoperating Costs NonoperatingCosts	7037000	USD
CY2013Q4	pnw	Percentage Of Unrealized Gains And Losses On Certain Derivatives Deferred For Future Rate Treatment PercentageOfUnrealizedGainsAndLossesOnCertainDerivativesDeferredForFutureRateTreatment	1.00	pure
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	3454628000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	1850000	USD
CY2011	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	3414000	USD
CY2011	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	3111000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	1239000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	1629000	USD
CY2012	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	367000	USD
CY2013	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	75000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	19842000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	10451000	USD
CY2012	pnw	Nonoperating Costs NonoperatingCosts	7777000	USD
CY2013	pnw	Nonoperating Costs NonoperatingCosts	8207000	USD
CY2012	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	2453000	USD
CY2013	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	3711000	USD
CY2012	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	9612000	USD
CY2013	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	4106000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	4200000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	16367000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3340000	USD
CY2013Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	642007000	USD
CY2012Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	218096000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-78053000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	5381000	USD
CY2013	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-30574000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	35955000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	492322000	USD
CY2012	us-gaap	Interest Costs Incurred InterestCostsIncurred	214616000	USD
CY2011	us-gaap	Interest Costs Incurred InterestCostsIncurred	241995000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-14971000	USD
CY2011	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-18358000	USD
CY2012	us-gaap	Interest Expense InterestExpense	199645000	USD
CY2011	us-gaap	Interest Expense InterestExpense	223637000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	656310000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	539238000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	237317000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	183604000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	418993000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	355634000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-5829000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	11306000	USD
CY2011	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-33349000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	846323000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	2608305000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	387380000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	328110000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5838000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	11363000	USD
CY2012Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	31334000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	152191000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-22763000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-57271000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-59887000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	413164000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	366940000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	31622000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-70902000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1031000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	6026000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	38155000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	27467000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	381542000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	339473000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	109510000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	109053000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110527000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	109864000	shares
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.54
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.01
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	406074000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	439966000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	439966000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	670557000	USD
CY2013	us-gaap	Interest Expense InterestExpense	187027000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	11261000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7605000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	451319000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	374545000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	475921000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	419697000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	442029000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	347078000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	140000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-17472000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-6156000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	14900000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	37389000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-39120000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-46288000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-651000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	3935000	USD
CY2012Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	2423000	USD
CY2012Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	25699000	USD
CY2012Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	72692000	USD
CY2012Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	71257000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	37102000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	1005726000	USD
CY2012Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	35891000	USD
CY2012Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	570625000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	62694000	USD
CY2012Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	92175000	USD
CY2012Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	669210000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	14346367000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4929613000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	9416754000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	565716000	USD
CY2012Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	128995000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	162150000	USD
CY2012Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	122778000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	10396393000	USD
CY2012Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1099900000	USD
CY2012Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	70389000	USD
CY2012Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	137997000	USD
CY2012Q4	pnw	Total Deferred Debits TotalDeferredDebits	1308286000	USD
CY2012Q4	us-gaap	Assets Assets	13379615000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	221312000	USD
CY2012Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	124939000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	49380000	USD
CY2012Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	59789000	USD
CY2012Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	122828000	USD
CY2012Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	79689000	USD
CY2012Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	73741000	USD
CY2012Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	88116000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	171573000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1083542000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	3160219000	USD
CY2012Q4	pnw	Sale Leaseback Lessor Notes SaleLeasebackLessorNotes	38869000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3199088000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2151371000	USD
CY2012Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	759201000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	357097000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1058755000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	85264000	USD
CY2012Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	109359000	USD
CY2012Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	118860000	USD
CY2012Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	71135000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	183835000	USD
CY2012Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	4994696000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	2466923000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	4211000	USD
CY2012Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	2462712000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1624102000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	64416000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-49592000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-114008000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	3972806000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	129483000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4102289000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13379615000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13508686000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	4194470000	USD
CY2013Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	2487250000	USD
CY2013Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	4753117000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1618644000	USD
CY2013Q4	us-gaap	Assets Assets	13508686000	USD
CY2013Q4	pnw	Total Deferred Debits TotalDeferredDebits	849395000	USD
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	10888985000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	9900245000	USD
CY2013Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	726697000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	1043609000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	225925000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	439703000	USD
CY2013Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	146057000	USD
CY2012Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	222055000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	411543000	USD
CY2012Q4	pnw	Accumulated Amortization On Nuclear Fuel AccumulatedAmortizationOnNuclearFuel	133950000	USD
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	110280703	shares
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	98944	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	109837957	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	95192	shares
CY2011	pnw	Gain On Sale Of Energy Related Products And Services Business GainOnSaleOfEnergyRelatedProductsAndServicesBusiness	10404000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	481262000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	493784000	USD
CY2012	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	71573000	USD
CY2011	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	69166000	USD
CY2012	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	-116716000	USD
CY2011	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	-155157000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	22436000	USD
CY2011	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	23707000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	187023000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	117952000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	749000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-4064000	USD
CY2012	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-14587000	USD
CY2011	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-40626000	USD
CY2012	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-30394000	USD
CY2011	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	21947000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23043000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23398000	USD
CY2012	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4043000	USD
CY2011	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-3983000	USD
CY2012	us-gaap	Investment Tax Credit InvestmentTaxCredit	41579000	USD
CY2011	us-gaap	Investment Tax Credit InvestmentTaxCredit	58240000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	27352000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	3079000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-96600000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	58346000	USD
CY2012	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	12736000	USD
CY2011	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	8085000	USD
CY2012	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	23869000	USD
CY2011	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	20358000	USD
CY2012	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-2216000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	889551000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6872000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	41722000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	29801000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	58484000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1171122000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1125583000	USD
CY2011	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	497780000	USD
CY2012	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	434852000	USD
CY2011	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	513799000	USD
CY2011	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	55444000	USD
CY2012	pnw	Change In Margin And Collateral Accounts Liabilities ChangeInMarginAndCollateralAccountsLiabilities	137785000	USD
CY2011	pnw	Change In Margin And Collateral Accounts Liabilities ChangeInMarginAndCollateralAccountsLiabilities	29731000	USD
CY2012	pnw	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	1756000	USD
CY2011	pnw	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	3530000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-2583000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	8410000	USD
CY2012	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	13539000	USD
CY2011	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	37009000	USD
CY2011	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	884350000	USD
CY2012	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	49876000	USD
CY2011	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	38096000	USD
CY2012	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-14971000	USD
CY2011	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-18358000	USD
CY2011	pnw	Proceeds From Sale Of Energy Related Products And Services Business ProceedsFromSaleOfEnergyRelatedProductsAndServicesBusiness	45111000	USD
CY2012	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	417603000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1099000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1931000	USD
CY2013	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	21678000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-872994000	USD
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CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	470353000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	654286000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	655169000	USD
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CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-16600000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	225075000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	221728000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	15955000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	15841000	USD
CY2012	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	10529000	USD
CY2011	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	10210000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	170000	USD
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CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-420181000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-7381000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-76605000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-16676000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-160582000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1009401000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1153307000	USD
CY2012	pnw	Defined Benefit Plan Cost Deferred DefinedBenefitPlanCostDeferred	14000000	USD
CY2011	pnw	Defined Benefit Plan Cost Deferred DefinedBenefitPlanCostDeferred	11000000	USD
CY2012Q3	pnw	Regulatory Asset Amortization Period RegulatoryAssetAmortizationPeriod	P3Y
CY2013	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	8000000	USD
CY2012	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	4000000	USD
CY2011	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500	pure
CY2013Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0400	pure
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0400	pure
CY2013	pnw	Defined Benefit Plan Health Care Cost Trend Rates Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRatesAssumedForNextFiscalYear	0.0750	pure
CY2012	pnw	Defined Benefit Plan Health Care Cost Trend Rates Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRatesAssumedForNextFiscalYear	0.0750	pure
CY2013	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500	pure
CY2012	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500	pure
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0400	pure
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0400	pure
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0400	pure
CY2012	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0750	pure
CY2011	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0800	pure
CY2013	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0750	pure
CY2013	pnw	Defined Benefit Plan Period After Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanPeriodAfterWhichRateReachesUltimateTrendRate	P4Y
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775	pure
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775	pure
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0700	pure
CY2012	pnw	Defined Benefit Plan Period After Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanPeriodAfterWhichRateReachesUltimateTrendRate	P4Y
CY2013Q4	pnw	Regulatory Liability Including Deferred Fuel And Purchased Power Regulatory Liability Current RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent	99000000	USD
CY2012Q4	pnw	Regulatory Liability Including Deferred Fuel And Purchased Power Regulatory Liability Current RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent	88000000	USD
CY2013Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	801297000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	127595000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	230591000	USD
CY2013	pnw	Income Tax Reconciliation Tax Credits And Adjustments Prior Years IncomeTaxReconciliationTaxCreditsAndAdjustmentsPriorYears	3356000	USD
CY2013Q4	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	4000000	USD
CY2013Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	711712000	USD
CY2013Q4	pnw	Regulatory Asset Including Deferred Fuel And Purchased Power Regulatory Asset Current RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	97000000	USD
CY2012Q4	pnw	Regulatory Asset Including Deferred Fuel And Purchased Power Regulatory Asset Current RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	144000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	91152000	USD
CY2013Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	41000000	USD
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	16024000	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	924727000	USD
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9526000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3203000	USD
CY2013Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	20755000	USD
CY2013Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	125125000	USD
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	284516000	USD
CY2013Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	62528000	USD
CY2013Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	76101000	USD
CY2013Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	99273000	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	70315000	USD
CY2013Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	42209000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4340460000	USD
CY2013	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	31190000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	25581000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	249296000	USD
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	44991000	USD
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	133094000	USD
CY2013	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	6059000	USD
CY2013	pnw	Change In Margin And Collateral Accounts Liabilities ChangeInMarginAndCollateralAccountsLiabilities	12355000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1016322000	USD
CY2013	pnw	Proceeds From Sale Of Energy Related Products And Services Business ProceedsFromSaleOfEnergyRelatedProductsAndServicesBusiness	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	136307000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	60950000	USD
CY2013	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	17385000	USD
CY2013	pnw	Income Tax Receivable That Reclassified From Long Term To Short Term IncomeTaxReceivableThatReclassifiedFromLongTermToShortTerm	137000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3930586000	USD
CY2013	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	1951000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	11878000	USD
CY2012Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2013Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2012Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	62000000	USD
CY2012Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	110000000	USD
CY2013	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	1095709000	USD
CY2013	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	415708000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	164167000	USD
CY2013	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	7994000	USD
CY2013	us-gaap	Interest Costs Incurred InterestCostsIncurred	201888000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-14861000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	33892000	USD
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	109984000	shares
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	406074000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-213000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-26747000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-9421000	USD
CY2013Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	299904000	USD
CY2013Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	96796000	USD
CY2013Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	221682000	USD
CY2013Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	38028000	USD
CY2013Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	135517000	USD
CY2013Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	17169000	USD
CY2013Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	76388000	USD
CY2013Q4	us-gaap	Other Assets Current OtherAssetsCurrent	39895000	USD
CY2013Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	23815000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	60875000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	15200464000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5300219000	USD
CY2013Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	581369000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	157689000	USD
CY2013Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	124557000	USD
CY2013Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	137683000	USD
CY2013Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	130998000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	48351000	USD
CY2013Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	153125000	USD
CY2013Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	540424000	USD
CY2013Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	31892000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	158540000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	313833000	USD
CY2013Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	513628000	USD
CY2013Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	114480000	USD
CY2013Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	207453000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	185659000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	2491558000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	4308000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1785273000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	54995000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-23058000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	145990000	USD
CY2013	us-gaap	Investment Tax Credit InvestmentTaxCredit	52542000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-534000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	17913000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	45414000	USD
CY2013	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-7513000	USD
CY2013	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-993000	USD
CY2013	pnw	Increase Decrease In Income Taxes Receivable Noncurrent IncreaseDecreaseInIncomeTaxesReceivableNoncurrent	-137270000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-91425000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	41757000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-24682000	USD
CY2013	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	41090000	USD
CY2013	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-14861000	USD
CY2013	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	446025000	USD
CY2013	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	463274000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2059000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	122828000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	235244000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	17319000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	299000	USD
CY2013	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	145609000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	13158000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	32896000	USD
CY2013Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	152361000	USD
CY2012Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	99819000	USD
CY2011	pnw	Defined Benefit Plan Period After Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanPeriodAfterWhichRateReachesUltimateTrendRate	P4Y
CY2013Q3	pnw	Significant Change In Unrecognized Tax Benefits SignificantChangeInUnrecognizedTaxBenefits	67000000	USD
CY2013	pnw	Increase Decrease In Deferred Income Taxes Due To Rate Changes IncreaseDecreaseInDeferredIncomeTaxesDueToRateChanges	-75000000	USD
CY2013Q4	pnw	Sale Leaseback Lessor Notes SaleLeasebackLessorNotes	13420000	USD
CY2013Q3	pnw	Increase Decrease In Deferred Income Taxes Due To Regulation Adoption IncreaseDecreaseInDeferredIncomeTaxesDueToRegulationAdoption	-84000000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.23
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.67
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.10

Files In Submission

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$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

2012 Q4 Form 10-K Financial Statement

#000110465914012068 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

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$PNW PINNACLE WEST CAPITAL CORP Stock $pnw

2012 Q4 Form 10-K Financial Statement

#000110465914012068 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw