$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

$pnw Overview Financials Valuation SEC Filings Company Website

2017 Q1 Form 10-Q Financial Statement

#000076462217000030 Filed on May 02, 2017

Income Statement

Concept	2017 Q1	2016 Q1
Revenue	$677.7M	$677.2M
YoY Change	0.08%	0.89%
Cost Of Revenue	$212.4M	$221.3M
YoY Change	-4.02%	-0.87%
Gross Profit	$465.3M	$455.9M
YoY Change	2.07%	1.76%
Gross Profit Margin	68.66%	67.32%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$147.9M	$140.8M
YoY Change	5.05%	-0.52%
% of Gross Profit	31.78%	30.88%
Operating Expenses	$662.9M	$596.1M
YoY Change	11.21%	6.69%
Operating Profit	$67.41M	$50.16M
YoY Change	34.39%	-25.89%
Interest Expense	$47.39M	$45.52M
YoY Change	4.12%	3.02%
% of Operating Profit	70.3%	90.74%
Other Income/Expense, Net	$12.38M	$6.595M
YoY Change	87.67%	27.49%
Pretax Income	$32.40M	$11.24M
YoY Change	188.22%	-60.8%
Income Tax	$4.211M	$1.914M
% Of Pretax Income	13.0%	17.03%
Net Earnings	$28.19M	$9.326M
YoY Change	202.22%	-55.01%
Net Earnings / Revenue	4.16%	1.38%
Basic Earnings Per Share	$0.21	$0.04
Diluted Earnings Per Share	$0.21	$0.04
COMMON SHARES
Basic Shares Outstanding	111.7M shares	111.3M shares
Diluted Shares Outstanding	112.2M shares	111.8M shares

Balance Sheet

Concept	2017 Q1	2016 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.000M	$14.00M
YoY Change	-78.57%	16.67%
Cash & Equivalents	$3.028M	$14.48M
Short-Term Investments
Other Short-Term Assets	$48.57M	$40.48M
YoY Change	19.97%	-10.31%
Inventory	$283.0M	$278.0M
Prepaid Expenses
Receivables	$189.0M	$213.0M
Other Receivables	$10.00M	$5.000M
Total Short-Term Assets	$795.0M	$826.0M
YoY Change	-3.76%	-11.7%
LONG-TERM ASSETS
Property, Plant & Equipment	$11.38B	$10.62B
YoY Change	7.17%	5.11%
Goodwill
YoY Change
Intangibles	$251.2M	$116.0M
YoY Change	116.53%	-9.09%
Long-Term Investments
YoY Change
Other Assets	$70.03M	$52.68M
YoY Change	32.93%	2.39%
Total Long-Term Assets	$15.40B	$14.36B
YoY Change	7.23%	6.36%
TOTAL ASSETS
Total Short-Term Assets	$795.0M	$826.0M
Total Long-Term Assets	$15.40B	$14.36B
Total Assets	$16.19B	$15.19B
YoY Change	6.64%	5.19%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$250.2M	$234.9M
YoY Change	6.49%	-13.46%
Accrued Expenses	$49.00M	$44.00M
YoY Change	11.36%	4.76%
Deferred Revenue
YoY Change
Short-Term Debt	$207.3M	$261.8M
YoY Change	-20.82%	488.31%
Long-Term Debt Due	$125.0M	$358.0M
YoY Change	-65.08%	-6.77%
Total Short-Term Liabilities	$1.194B	$1.586B
YoY Change	-24.72%	15.42%
LONG-TERM LIABILITIES
Long-Term Debt	$4.274B	$3.463B
YoY Change	23.41%	5.54%
Other Long-Term Liabilities	$162.5M	$194.6M
YoY Change	-16.49%	1.6%
Total Long-Term Liabilities	$4.436B	$3.658B
YoY Change	21.29%	5.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.194B	$1.586B
Total Long-Term Liabilities	$4.436B	$3.658B
Total Liabilities	$5.630B	$5.243B
YoY Change	7.37%	8.19%
SHAREHOLDERS EQUITY
Retained Earnings	$2.279B	$2.097B
YoY Change	8.66%	7.98%
Common Stock	$2.595B	$2.547B
YoY Change	1.88%	0.94%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.270M	$542.0K
YoY Change	318.82%	-76.08%
Treasury Stock Shares	29.20K shares	7.936K shares
Shareholders Equity	$4.829B	$4.600B
YoY Change
Total Liabilities & Shareholders Equity	$16.19B	$15.19B
YoY Change	6.64%	5.19%

Cashflow Statement

Concept	2017 Q1	2016 Q1
OPERATING ACTIVITIES
Net Income	$28.19M	$9.326M
YoY Change	202.22%	-55.01%
Depreciation, Depletion And Amortization	$147.9M	$140.8M
YoY Change	5.05%	-0.52%
Cash From Operating Activities	$140.1M	$144.2M
YoY Change	-2.88%	0.04%
INVESTING ACTIVITIES
Capital Expenditures	-$348.8M	-$378.5M
YoY Change	-7.85%	50.8%
Acquisitions
YoY Change
Other Investing Activities	$793.0K	$472.0K
YoY Change	68.01%	0.43%
Cash From Investing Activities	-$348.7M	-$372.3M
YoY Change	-6.34%	59.91%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$202.8M	$203.1M
YoY Change	-0.15%	119.02%
NET CHANGE
Cash From Operating Activities	$140.1M	$144.2M
Cash From Investing Activities	-$348.7M	-$372.3M
Cash From Financing Activities	$202.8M	$203.1M
Net Change In Cash	-$5.853M	-$25.00M
YoY Change	-76.59%	-715.86%
FREE CASH FLOW
Cash From Operating Activities	$140.1M	$144.2M
Capital Expenditures	-$348.8M	-$378.5M
Free Cash Flow	$488.9M	$522.7M
YoY Change	-6.48%	32.28%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016Q1	pnw	Nonoperating Costs NonoperatingCosts	2049000	USD
CY2017Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q1	dei	Amendment Flag AmendmentFlag	false
CY2017Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2017Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017Q1	dei	Document Period End Date DocumentPeriodEndDate	2017-03-31
CY2017Q1	dei	Document Type DocumentType	10-Q
CY2017Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000764622
CY2017Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	111560427	shares
CY2017Q1	dei	Entity Registrant Name EntityRegistrantName	PINNACLE WEST CAPITAL CORP
CY2016Q1	pnw	Change In Margin And Collateral Accounts Liabilities ChangeInMarginAndCollateralAccountsLiabilities	410000	USD
CY2017Q1	pnw	Change In Margin And Collateral Accounts Liabilities ChangeInMarginAndCollateralAccountsLiabilities	0	USD
CY2016Q4	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	12465000	USD
CY2017Q1	pnw	Deferred Fuel And Purchased Power Regulatory Asset Current DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	17625000	USD
CY2017Q1	pnw	Defined Benefit Plan Amountof Other Postretirement Benefit Trust Assetsfor Union Employee Medical Costs DefinedBenefitPlanAmountofOtherPostretirementBenefitTrustAssetsforUnionEmployeeMedicalCosts	145000000	USD
CY2016Q1	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Gain Loss Deferred As Regulatory Asset Or Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability	-9103000	USD
CY2017Q1	pnw	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Derivative Gain Loss Deferred As Regulatory Asset Or Liability FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability	-11755000	USD
CY2016Q1	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	2388000	USD
CY2017Q1	pnw	Increase Decrease Deferred Fuel And Purchased Power Amortization IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization	-4172000	USD
CY2016Q1	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	1471000	USD
CY2017Q1	pnw	Miscellaneous Other Nonoperating Expense MiscellaneousOtherNonoperatingExpense	1420000	USD
CY2016Q1	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	0	USD
CY2017Q1	pnw	Miscellaneous Other Nonoperating Income MiscellaneousOtherNonoperatingIncome	3000	USD
CY2017Q1	pnw	Nonoperating Costs NonoperatingCosts	1959000	USD
CY2016Q4	pnw	Regulatory Asset Including Deferred Fuel And Purchased Power Regulatory Asset Current RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	106875000	USD
CY2017Q1	pnw	Regulatory Asset Including Deferred Fuel And Purchased Power Regulatory Asset Current RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent	155941000	USD
CY2016Q4	pnw	Regulatory Liability Including Deferred Fuel And Purchased Power Regulatory Liability Current RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent	99899000	USD
CY2017Q1	pnw	Regulatory Liability Including Deferred Fuel And Purchased Power Regulatory Liability Current RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent	101208000	USD
CY2016Q4	pnw	Total Deferred Debits TotalDeferredDebits	1619108000	USD
CY2017Q1	pnw	Total Deferred Debits TotalDeferredDebits	1640916000	USD
CY2016Q4	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	848650000	USD
CY2017Q1	pnw	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	875073000	USD
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	264631000	USD
CY2017Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	250197000	USD
CY2016Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	250491000	USD
CY2017Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	191175000	USD
CY2016Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	210162000	USD
CY2017Q1	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	209818000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5970100000	USD
CY2017Q1	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4315000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	39070000	USD
CY2017Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6060254000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4752000	USD
CY2017Q1	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	38548000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-43822000	USD
CY2017Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-42863000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3037000	USD
CY2017Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1946000	USD
CY2016Q1	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-5227000	USD
CY2017Q1	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	-4472000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	9135000	USD
CY2017Q1	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	8627000	USD
CY2016Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	615340000	USD
CY2017Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	623394000	USD
CY2016Q4	us-gaap	Assets Assets	16004253000	USD
CY2017Q1	us-gaap	Assets Assets	16192825000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	822219000	USD
CY2017Q1	us-gaap	Assets Current AssetsCurrent	794996000	USD
CY2016Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	11076000	USD
CY2017Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	9416000	USD
CY2016Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	59707000	USD
CY2017Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	79306000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	39488000	USD
CY2016Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	14484000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8881000	USD
CY2017Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3028000	USD
CY2016Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-25004000	USD
CY2017Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-5853000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2017Q1	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2017Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	111392053	shares
CY2017Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	111587048	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	2596030000	USD
CY2017Q1	us-gaap	Common Stock Value CommonStockValue	2595042000	USD
CY2016Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	2591897000	USD
CY2017Q1	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	2592772000	USD
CY2016Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5431000	USD
CY2017Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	24271000	USD
CY2016Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	10304000	USD
CY2017Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	29144000	USD
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1019947000	USD
CY2017Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1005797000	USD
CY2016Q1	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	221285000	USD
CY2016Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	88672000	USD
CY2017Q1	us-gaap	Cost Of Goods Sold Electric CostOfGoodsSoldElectric	212395000	USD
CY2016Q1	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	119476000	USD
CY2017Q1	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	127627000	USD
CY2016Q1	us-gaap	Costs And Expenses CostsAndExpenses	627005000	USD
CY2017Q1	us-gaap	Costs And Expenses CostsAndExpenses	604222000	USD
CY2016Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	107949000	USD
CY2017Q1	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	101226000	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-1765000	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2017Q1	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	92113000	USD
CY2016Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	82520000	USD
CY2017Q1	us-gaap	Customer Deposits Current CustomerDepositsCurrent	76149000	USD
CY2016Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	4146785000	USD
CY2017Q1	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	4398890000	USD
CY2016Q4	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	779586000	USD
CY2017Q1	us-gaap	Decommissioning Trust Assets Amount DecommissioningTrustAssetsAmount	805048000	USD
CY2016Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	5753610000	USD
CY2017Q1	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	5759182000	USD
CY2016Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3468000	USD
CY2017Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10357000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2945232000	USD
CY2017Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2955441000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	166206000	USD
CY2017Q1	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	175414000	USD
CY2016Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	140759000	USD
CY2017Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	147861000	USD
CY2016Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	19694000	USD
CY2017Q1	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	4222000	USD
CY2016Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	25836000	USD
CY2017Q1	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	41932000	USD
CY2016Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	1000	USD
CY2017Q1	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	0	USD
CY2016Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	47238000	USD
CY2017Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	63213000	USD
CY2016Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	72926000	USD
CY2017Q1	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	USD
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2016Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	28608000	USD
CY2017Q1	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	30656000	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-1423000	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3	262000	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3	-38000	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	-548000	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	-16091000	USD
CY2015Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-32979000	USD
CY2016Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-39507000	USD
CY2016Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-47406000	USD
CY2017Q1	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-41685000	USD
CY2016Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11240000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32396000	USD
CY2016Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1914000	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4211000	USD
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CY2016Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-38443000	USD
CY2017Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	22147000	USD
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CY2017Q1	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	43706000	USD
CY2016Q1	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	-681000	USD
CY2017Q1	us-gaap	Increase Decrease In Deposit Other Assets IncreaseDecreaseInDepositOtherAssets	12000	USD
CY2016Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4048000	USD
CY2017Q1	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	5780000	USD
CY2016Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1525000	USD
CY2017Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	667000	USD
CY2016Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-38040000	USD
CY2017Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-101801000	USD
CY2016Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17504000	USD
CY2017Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	36836000	USD
CY2016Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12151000	USD
CY2017Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1604000	USD
CY2016Q1	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	8131000	USD
CY2017Q1	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	17353000	USD
CY2016Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-47282000	USD
CY2017Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-47007000	USD
CY2016Q1	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	1007000	USD
CY2017Q1	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-988000	USD
CY2016Q1	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-6445000	USD
CY2017Q1	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-6723000	USD
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	90022000	USD
CY2017Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	251208000	USD
CY2016Q1	us-gaap	Interest Costs Incurred InterestCostsIncurred	50744000	USD
CY2017Q1	us-gaap	Interest Costs Incurred InterestCostsIncurred	51864000	USD
CY2016Q1	us-gaap	Interest Expense InterestExpense	45517000	USD
CY2017Q1	us-gaap	Interest Expense InterestExpense	47392000	USD
CY2016Q1	us-gaap	Interest Paid Net InterestPaidNet	56139000	USD
CY2017Q1	us-gaap	Interest Paid Net InterestPaidNet	54280000	USD
CY2016Q4	us-gaap	Interest Payable Current InterestPayableCurrent	52835000	USD
CY2017Q1	us-gaap	Interest Payable Current InterestPayableCurrent	48576000	USD
CY2016Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	117000	USD
CY2017Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	477000	USD
CY2016Q1	us-gaap	Investment Tax Credit InvestmentTaxCredit	-114000	USD
CY2017Q1	us-gaap	Investment Tax Credit InvestmentTaxCredit	-344000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	16004253000	USD
CY2017Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	16192825000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1292946000	USD
CY2017Q1	us-gaap	Liabilities Current LiabilitiesCurrent	1193813000	USD
CY2016Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	58482000	USD
CY2017Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	51101000	USD
CY2016Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	10046000	USD
CY2017Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	10172000	USD
CY2016Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	4425789000	USD
CY2017Q1	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	4683285000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4021785000	USD
CY2017Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4273890000	USD
CY2016Q1	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	518000	USD
CY2017Q1	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	301000	USD
CY2016Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	221910000	USD
CY2017Q1	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	224516000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	132290000	USD
CY2017Q1	us-gaap	Minority Interest MinorityInterest	137164000	USD
CY2016Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	203092000	USD
CY2017Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	202780000	USD
CY2016Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-372305000	USD
CY2017Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-348684000	USD
CY2016Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	144209000	USD
CY2017Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	140051000	USD
CY2016Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2017Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4873000	USD
CY2016Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4453000	USD
CY2017Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	23312000	USD
CY2016Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	6595000	USD
CY2017Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	6282000	USD
CY2016Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	119004000	USD
CY2017Q1	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	135821000	USD
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	50162000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	73506000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	45028000	USD
CY2017Q1	us-gaap	Other Assets Current OtherAssetsCurrent	48565000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	69063000	USD
CY2017Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	70025000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	978000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	959000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-530000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-522000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-645000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-704000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1141000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1207000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	200000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	356000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-693000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-770000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	546000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	674000	USD
CY2016Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	548000	USD
CY2017Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	388000	USD
CY2016Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	139474000	USD
CY2017Q1	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	144029000	USD
CY2016Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	253979000	USD
CY2017Q1	us-gaap	Other Inventory Supplies OtherInventorySupplies	252598000	USD
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	244000000	USD
CY2017Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	152015000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	156784000	USD
CY2017Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	162476000	USD
CY2016Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	125000000	USD
CY2017Q1	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	125000000	USD
CY2016Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4038000	USD
CY2017Q1	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	3680000	USD
CY2016Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	117000	USD
CY2017Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	480000	USD
CY2016Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	472000	USD
CY2017Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	793000	USD
CY2016Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	67611000	USD
CY2017Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	71177000	USD
CY2016Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	378500000	USD
CY2017Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	348824000	USD
CY2016Q1	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	142379000	USD
CY2017Q1	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	151696000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	509310000	USD
CY2017Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	469746000	USD
CY2016Q1	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	12464000	USD
CY2017Q1	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	5975000	USD
CY2016Q1	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	141809000	USD
CY2017Q1	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	151126000	USD
CY2016Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	255441000	USD
CY2016Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2017Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	8000000	USD
CY2016Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1000	USD
CY2017Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1000	USD
CY2016Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	261800000	USD
CY2017Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	22097000	USD
CY2016Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	8902000	USD
CY2017Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-11580000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	9326000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	28185000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	17341888000	USD
CY2017Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	17436720000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11371788000	USD
CY2017Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11376466000	USD
CY2016Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5227000	USD
CY2017Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4472000	USD
CY2016Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	10516000	USD
CY2017Q1	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	9482000	USD
CY2016Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	12714276000	USD
CY2017Q1	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	12881840000	USD
CY2016Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	94410000	USD
CY2017Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	138316000	USD
CY2016Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1313428000	USD
CY2017Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1321473000	USD
CY2016Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	99899000	USD
CY2017Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	101208000	USD
CY2016Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	948916000	USD
CY2017Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	948293000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2255547000	USD
CY2017Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2278867000	USD
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	677167000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	677728000	USD
CY2016Q1	us-gaap	Share Based Compensation ShareBasedCompensation	16687000	USD
CY2017Q1	us-gaap	Share Based Compensation ShareBasedCompensation	9997000	USD
CY2016Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	177200000	USD
CY2017Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	207297000	USD
CY2016Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5397000	USD
CY2017Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-988000	USD
CY2016Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	10135000	USD
CY2017Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	14013000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	4803622000	USD
CY2017Q1	us-gaap	Stockholders Equity StockholdersEquity	4828776000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4719457000	USD
CY2016Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4740413000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4935912000	USD
CY2017Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4965940000	USD
CY2016Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	42501000	USD
CY2017Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	29195	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	4133000	USD
CY2017Q1	us-gaap	Treasury Stock Value TreasuryStockValue	2270000	USD
CY2016Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4880000	USD
CY2017Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12141000	USD
CY2016Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	111000	USD
CY2017Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	101000	USD
CY2017Q1	us-gaap	Unrecorded Unconditional Purchase Obligation Change Of Amount As Result Of Variable Components UnrecordedUnconditionalPurchaseObligationChangeOfAmountAsResultOfVariableComponents	-600000000	USD
CY2016Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	243195000	USD
CY2017Q1	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	219976000	USD
CY2017Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	43836000	USD
CY2016Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	138964000	USD
CY2017Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	182812000	USD
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	55317	shares
CY2016Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	113515000	USD
CY2017Q1	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	112548000	USD
CY2016Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	111847000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112195000	shares
CY2016Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111296000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111728000	shares
CY2016Q1	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	551000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	467000	shares

Files In Submission

Name	View Source	Status
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$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw

2017 Q1 Form 10-Q Financial Statement

#000076462217000030 Filed on May 02, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PNW PINNACLE WEST CAPITAL CORP Stock $pnw

2017 Q1 Form 10-Q Financial Statement

#000076462217000030 Filed on May 02, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PNW
PINNACLE WEST CAPITAL CORP Stock $pnw