$IDA
IDACORP INC Stock $ida

$ida Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-Q Financial Statement

#000105787718000109 Filed on November 01, 2018

Income Statement

Concept	2018 Q4	2018 Q3	2017 Q3
Revenue	$311.9M	$408.8M	$408.3M
YoY Change	2.06%	0.12%	9.75%
Cost Of Revenue	$77.70M	$99.20M	$76.60M
YoY Change	24.12%	29.5%	1.86%
Gross Profit	$234.2M	$309.6M	$331.7M
YoY Change	-3.62%	-6.66%	11.76%
Gross Profit Margin	75.09%	75.73%	81.23%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$43.10M	$42.70M	$41.20M
YoY Change	5.64%	3.64%	11.35%
% of Gross Profit	18.4%	13.79%	12.42%
Operating Expenses	$210.2M	$293.6M	$284.6M
YoY Change	13.13%	3.14%	3.83%
Operating Profit	$24.00M	$115.2M	$123.7M
YoY Change	-58.04%	-6.85%	26.32%
Interest Expense	$0.00	$21.84M	$20.74M
YoY Change	-100.0%	5.27%	2.12%
% of Operating Profit	0.0%	18.95%	16.77%
Other Income/Expense, Net	$5.800M	$350.0K	-$537.0K
YoY Change	13.73%	-165.18%	-120.03%
Pretax Income	$29.70M	$106.5M	$113.4M
YoY Change	-29.79%	-6.1%	15.04%
Income Tax	$3.500M	$3.868M	$22.30M
% Of Pretax Income	11.78%	3.63%	19.67%
Net Earnings	$26.10M	$102.2M	$90.63M
YoY Change	-32.9%	12.8%	9.07%
Net Earnings / Revenue	8.37%	25.01%	22.2%
Basic Earnings Per Share		$2.03	$1.80
Diluted Earnings Per Share	$516.8K	$2.02	$1.80
COMMON SHARES
Basic Shares Outstanding	50.39M shares	50.43M shares	50.36M shares
Diluted Shares Outstanding		50.57M shares	50.42M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$267.5M	$261.3M	$104.4M
YoY Change	249.22%	150.29%	3.57%
Cash & Equivalents	$267.5M	$261.3M	$104.4M
Short-Term Investments
Other Short-Term Assets	$3.655M	$902.0K	$101.0K
YoY Change	20205.56%	793.07%	-96.63%
Inventory	$103.0M	$116.2M	$112.6M
Prepaid Expenses	$16.49M	$15.00M	$16.48M
Receivables	$77.18M	$93.14M	$101.7M
Other Receivables	$11.80M	$6.000M	$10.10M
Total Short-Term Assets	$597.6M	$582.7M	$457.9M
YoY Change	34.72%	27.25%	-0.43%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.396B	$4.353B	$4.241B
YoY Change	2.61%	2.63%	3.55%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$11.37M	$101.9M	$112.0M
YoY Change	0.19%	-9.02%	-14.63%
Other Assets	$62.88M	$62.72M	$51.29M
YoY Change	5.82%	22.28%	-4.22%
Total Long-Term Assets	$5.785B	$5.706B	$5.909B
YoY Change	3.27%	-3.44%	4.23%
TOTAL ASSETS
Total Short-Term Assets	$597.6M	$582.7M	$457.9M
Total Long-Term Assets	$5.785B	$5.706B	$5.909B
Total Assets	$6.383B	$6.289B	$6.367B
YoY Change	5.58%	-1.23%	3.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$110.8M	$75.65M	$72.15M
YoY Change	22.76%	4.85%	-7.37%
Accrued Expenses	$78.70M	$69.50M	$61.30M
YoY Change	13.4%	13.38%	0.82%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$2.425M
YoY Change		-100.0%	-55.09%
Long-Term Debt Due	$0.00		$0.00
YoY Change			-100.0%
Total Short-Term Liabilities	$258.6M	$250.4M	$225.8M
YoY Change	28.81%	10.9%	9.99%
LONG-TERM LIABILITIES
Long-Term Debt	$1.835B	$1.834B	$1.746B
YoY Change	5.08%	5.08%	0.01%
Other Long-Term Liabilities	$43.22M	$43.32M	$44.65M
YoY Change	-3.03%	-2.99%	-1.68%
Total Long-Term Liabilities	$1.914B	$1.830B	$2.143B
YoY Change	3.86%	-14.61%	5.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$258.6M	$250.4M	$225.8M
Total Long-Term Liabilities	$1.914B	$1.830B	$2.143B
Total Liabilities	$2.172B	$2.081B	$2.369B
YoY Change	6.31%	-12.18%	6.2%
SHAREHOLDERS EQUITY
Retained Earnings	$1.532B	$1.537B	$1.413B
YoY Change	7.36%	8.77%	7.26%
Common Stock	$863.6M	$861.5M	$855.0M
YoY Change	0.74%	0.76%	0.51%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.932M	$1.932M	$1.368M
YoY Change	39.39%	41.23%	580.6%
Treasury Stock Shares	27.23K shares	27.00K shares	26.98K shares
Shareholders Equity	$2.370B	$2.368B	$2.248B
YoY Change
Total Liabilities & Shareholders Equity	$6.383B	$6.289B	$6.367B
YoY Change	5.58%	-1.23%	3.88%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2017 Q3
OPERATING ACTIVITIES
Net Income	$26.10M	$102.2M	$90.63M
YoY Change	-32.9%	12.8%	9.07%
Depreciation, Depletion And Amortization	$43.10M	$42.70M	$41.20M
YoY Change	5.64%	3.64%	11.35%
Cash From Operating Activities	$125.7M	$169.5M	$157.0M
YoY Change	40.92%	7.96%	14.18%
INVESTING ACTIVITIES
Capital Expenditures	-$79.90M	-$64.40M	-$61.00M
YoY Change	2.17%	5.57%	-26.33%
Acquisitions
YoY Change
Other Investing Activities	-$7.800M	$2.800M	$1.700M
YoY Change	21.88%	64.71%	-666.67%
Cash From Investing Activities	-$87.70M	-$61.60M	-$59.40M
YoY Change	3.91%	3.7%	-28.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-31.70M	-29.90M	-25.80M
YoY Change	-2.46%	15.89%	-41.63%
NET CHANGE
Cash From Operating Activities	125.7M	169.5M	157.0M
Cash From Investing Activities	-87.70M	-61.60M	-59.40M
Cash From Financing Activities	-31.70M	-29.90M	-25.80M
Net Change In Cash	6.300M	78.00M	71.80M
YoY Change	-122.74%	8.64%	597.09%
FREE CASH FLOW
Cash From Operating Activities	$125.7M	$169.5M	$157.0M
Capital Expenditures	-$79.90M	-$64.40M	-$61.00M
Free Cash Flow	$205.6M	$233.9M	$218.0M
YoY Change	22.82%	7.29%	-1.04%

Facts In Submission

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	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Period End Date DocumentPeriodEndDate	2018-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001057877
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	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	IDACORP INC.
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	820505802
	dei	Trading Symbol TradingSymbol	IDA
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	ida	Effective Income Tax Rate Reconciliation Share Based Compensation EffectiveIncomeTaxRateReconciliationShareBasedCompensation	1053000	USD
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	ida	Energy Efficiency Programs EnergyEfficiencyPrograms	26726000	USD
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	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-33628000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1702000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	USD
CY2017Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	8147000	USD
CY2018Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-32494000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-6497000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	23480000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12976000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	54687000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	44869000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-18736000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-12616000	USD
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-3010000	USD
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	1619000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5256000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5504000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-494000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1250000	USD
	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-61968000	USD
	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-51173000	USD
CY2017Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	59000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	47000	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	131000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	72000	shares
CY2017Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2385000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	7106000	USD
CY2018Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2506000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	7584000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	20742000	USD
	us-gaap	Interest Expense InterestExpense	62089000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	21836000	USD
	us-gaap	Interest Expense InterestExpense	63978000	USD
CY2017Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	20300000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	60897000	USD
CY2018Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	21153000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	63252000	USD
CY2017Q3	us-gaap	Interest Expense Other InterestExpenseOther	2827000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	8298000	USD
CY2018Q3	us-gaap	Interest Expense Other InterestExpenseOther	3189000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	8310000	USD
	us-gaap	Interest Paid Net InterestPaidNet	60257000	USD
	us-gaap	Interest Paid Net InterestPaidNet	61832000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	22379000	USD
CY2018Q3	us-gaap	Interest Payable Current InterestPayableCurrent	21722000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6045405000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6288636000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	200749000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	250406000	USD
CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1842419000	USD
CY2018Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1830331000	USD
CY2017Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	59323000	USD
CY2018Q3	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	61033000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1746123000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1834422000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	115698000	USD
CY2018Q3	us-gaap	Long Term Investments LongTermInvestments	101853000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	3960000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	2164000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-906000	USD
CY2017Q3	us-gaap	Minority Interest MinorityInterest	4570000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	4729000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	5362000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-107069000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-10863000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-195965000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-170479000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	345965000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	365943000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	90634000	USD
	us-gaap	Net Income Loss NetIncomeLoss	173567000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	102231000	USD
	us-gaap	Net Income Loss NetIncomeLoss	200661000	USD
CY2017Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	442000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	610000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	360000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	633000	USD
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	284617000	USD
	us-gaap	Operating Expenses OperatingExpenses	784635000	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	293568000	USD
	us-gaap	Operating Expenses OperatingExpenses	810204000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	123707000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	259239000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	115233000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	248656000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	18000	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	902000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	59425000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	62721000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	31000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	95000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	24000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	73000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-471000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1412000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-721000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2164000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	302000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	906000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	250000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	750000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	773000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	2318000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	971000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	2914000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-742000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-2223000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-302000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-947000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-2841000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	471000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	1412000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	721000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-250000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-750000	USD
CY2017Q3	us-gaap	Other General Expense OtherGeneralExpense	1255000	USD
	us-gaap	Other General Expense OtherGeneralExpense	3666000	USD
CY2018Q3	us-gaap	Other General Expense OtherGeneralExpense	1176000	USD
	us-gaap	Other General Expense OtherGeneralExpense	3430000	USD
CY2017Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	55745000	USD
CY2018Q3	us-gaap	Other Inventory Supplies OtherInventorySupplies	58391000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	10182000	USD
CY2018Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8936000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44566000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	43315000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5220000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6866000	USD
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-537000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1377000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	350000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	199000	USD
CY2017Q4	us-gaap	Other Receivables OtherReceivables	30438000	USD
CY2018Q3	us-gaap	Other Receivables OtherReceivables	5987000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3042000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1288000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3189000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3614000	USD
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	4607000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	83441000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	89674000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	3248000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1172000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	207340000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	197975000	USD
	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	45158000	USD
	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	45236000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	21687000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	21033000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	438869000	USD
CY2018Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	415619000	USD
CY2017Q4	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	8075000	USD
CY2018Q3	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	4726000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	16984000	USD
CY2018Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	14998000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	220000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2968000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-19375000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	3755000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	3772000	USD
	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	1892000	USD
	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	2562000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	5934000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	21046000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	91076000	USD
	us-gaap	Profit Loss ProfitLoss	174177000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	102591000	USD
	us-gaap	Profit Loss ProfitLoss	201294000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4283875000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4352643000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	15488000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	17799000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	16555000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	18065000	USD
CY2017Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	5712000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	16555000	USD
CY2018Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6047000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	18065000	USD
CY2017Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2098274000	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2192315000	USD
CY2017Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	452424000	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	478973000	USD
CY2017Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3807888000	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3851145000	USD
CY2017Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	5906162000	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	6043460000	USD
CY2017Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-471000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1412000	USD
CY2018Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-721000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2164000	USD
CY2017Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	408324000	USD
	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1043874000	USD
CY2018Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	408801000	USD
	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1058860000	USD
CY2017Q3	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	406655000	USD
	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	1040387000	USD
CY2018Q3	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	407355000	USD
	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	1055515000	USD
CY2017Q3	us-gaap	Regulated Operating Revenue Other RegulatedOperatingRevenueOther	958000	USD
	us-gaap	Regulated Operating Revenue Other RegulatedOperatingRevenueOther	14608000	USD
CY2018Q3	us-gaap	Regulated Operating Revenue Other RegulatedOperatingRevenueOther	8557000	USD
	us-gaap	Regulated Operating Revenue Other RegulatedOperatingRevenueOther	35847000	USD
CY2017Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	48613000	USD
CY2018Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	30638000	USD
CY2017Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1083483000	USD
CY2018Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1127668000	USD
CY2017Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	1404000	USD
CY2018Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	25487000	USD
CY2017Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	698044000	USD
CY2018Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	740937000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1064000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	130000000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1323198000	USD
CY2017Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1413387000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1426528000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1537332000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	405697000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1025779000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	398798000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1019668000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	75761	shares
	us-gaap	Share Based Goods And Nonemployee Services Transaction Quantity Of Securities Issued ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued	12950	shares
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	2063000	USD
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	3068000	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	2247592000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2251385000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	2368115000	USD
CY2017Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2252162000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2256114000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2373477000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	3210000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	4308000	USD
CY2017Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	8614000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	26134000	USD
CY2018Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	8911000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	27306000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	11075000	USD
CY2018Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	47797000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	28000	shares
CY2018Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	27000	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	243000	USD
CY2017Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1368000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1386000	USD
CY2018Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1932000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3188000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3614000	USD
CY2017Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	75120000	USD
CY2018Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	59645000	USD
CY2017Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1669000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	3487000	USD
CY2018Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1446000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	3345000	USD
CY2017Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	283362000	USD
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	780969000	USD
CY2018Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	292392000	USD
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	806774000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	40259000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	122262000	USD
CY2018Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	41668000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	123084000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	54529000	USD
	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	111197000	USD
CY2018Q3	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	53623000	USD
	us-gaap	Utilities Operating Expense Fuel Used UtilitiesOperatingExpenseFuelUsed	102873000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	83445000	USD
	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	257167000	USD
CY2018Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	91563000	USD
	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	270075000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	75653000	USD
	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	186275000	USD
CY2018Q3	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	92393000	USD
	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	217301000	USD
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50421000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50408000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50565000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50503000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50362000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50361000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50434000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50431000	shares
	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In the opinion of management of IDACORP and Idaho Power, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly each company's consolidated financial position as of </font><font style="font-family:inherit;font-size:10pt;">September 30, 2018</font><font style="font-family:inherit;font-size:10pt;">, consolidated results of operations for the </font><font style="font-family:inherit;font-size:10pt;">three and nine months ended</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">September 30, 2018</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;">, and consolidated cash flows for the </font><font style="font-family:inherit;font-size:10pt;">nine months ended</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">September 30, 2018</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;">. These adjustments are of a normal and recurring nature. These financial statements do not contain the complete detail or footnote disclosure concerning accounting policies and other matters that would be included in full-year financial statements and should be read in conjunction with the audited consolidated financial statements included in IDACORP’s and Idaho Power’s Annual Report on Form 10-K for the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">. The results of operations for the interim period are not necessarily indicative of the results to be expected for the full year. A change in management's estimates or assumptions could have a material impact on IDACORP's or Idaho Power's respective financial condition and results of operations during the period in which such change occurred.</font></div></div>
	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Settlement gains and losses on electricity swap contracts are recorded on the income statement in revenues from contracts with customers or purchased power depending on the forecasted position being economically hedged by the derivative contract. Settlement gains and losses on contracts for natural gas are reflected in fuel expense. Settlement gains and losses on diesel derivatives are recorded in other operations and maintenance expense.</font></div></div>
	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Idaho Power is exposed to market risk relating to electricity, natural gas, and other fuel commodity prices, all of which are heavily influenced by supply and demand. Market risk may be influenced by market participants’ nonperformance of their contractual obligations and commitments, which affects the supply of or demand for the commodity. Idaho Power uses derivative instruments, such as physical and financial forward contracts, for both electricity and fuel to manage the risks relating to these commodity price exposures. The primary objectives of Idaho Power’s energy purchase and sale activity are to meet the demand of retail electric customers, maintain appropriate physical reserves to ensure reliability, and make economic use of temporary surpluses that may develop.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">All of Idaho Power's derivative instruments have been entered into for the purpose of economically hedging forecasted purchases and sales, though none of these instruments have been designated as cash flow hedges. Idaho Power offsets fair value amounts recognized on its balance sheet and applies collateral related to derivative instruments executed with the same counterparty under the same master netting agreement. Idaho Power does not offset a counterparty's current derivative contracts with the counterparty's long-term derivative contracts, although Idaho Power's master netting arrangements would allow current and long-term positions to be offset in the event of default. Also, in the event of default, Idaho Power's master netting arrangements would allow for the offsetting of all transactions executed under the master netting arrangement. These types of transactions may include non-derivative instruments, derivatives qualifying for scope exceptions, receivables and payables arising from settled positions, and other forms of non-cash collateral (such as letters of credit). These types of transactions are excluded from the offsetting presented in the derivative fair value and offsetting table that follows.</font></div></div>
	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">CONTINGENCIES</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;"> </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">IDACORP and Idaho Power have in the past and expect in the future to become involved in various claims, controversies, disputes, and other contingent matters, some of which involve litigation and regulatory or other contested proceedings. The ultimate resolution and outcome of litigation and regulatory proceedings is inherently difficult to determine, particularly where (a) the remedies or penalties sought are indeterminate, (b) the proceedings are in the early stages or the substantive issues have not been well developed, or (c) the matters involve complex or novel legal theories or a large number of parties. In accordance with applicable accounting guidance, IDACORP and Idaho Power, as applicable, establish an accrual for legal proceedings when those matters proceed to a stage where they present loss contingencies that are both probable and reasonably estimable. If the loss contingency at issue is not both probable and reasonably estimable, IDACORP and Idaho Power do not establish an accrual and the matter will continue to be monitored for any developments that would make the loss contingency both probable and reasonably estimable. As of the date of this report, IDACORP's and Idaho Power's accruals for loss contingencies are not material to their financial statements as a whole; however, future accruals could be material in a given period. IDACORP's and Idaho Power's determination is based on currently available information, and estimates presented in financial statements and other financial disclosures involve significant judgment and may be subject to significant uncertainty. For matters that affect Idaho Power’s operations, Idaho Power intends to seek, to the extent permissible and appropriate, recovery through the ratemaking process of costs incurred.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">IDACORP and Idaho Power are parties to legal claims and legal and regulatory actions and proceedings in the ordinary course of business and, as noted above, record an accrual for associated loss contingencies when they are probable and reasonably estimable. As of the date of this report, the companies believe that resolution of those matters will not have a material adverse effect on their respective consolidated financial statements. Idaho Power is also actively monitoring various pending environmental regulations and executive orders related to environmental matters that may have a significant impact on its future operations. Given uncertainties regarding the outcome, timing, and compliance plans for these environmental matters, Idaho Power is unable to estimate the financial impact of these regulations.</font></div></div>
	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">IDACORP is a holding company formed in 1998 whose principal operating subsidiary is Idaho Power. Idaho Power is an electric utility engaged in the generation, transmission, distribution, sale, and purchase of electric energy and capacity with a service area covering approximately 24,000 square miles in southern Idaho and eastern Oregon. Idaho Power is regulated primarily by the state utility regulatory commissions of Idaho and Oregon and the Federal Energy Regulatory Commission (FERC). Idaho Power is the parent of Idaho Energy Resources Co. (IERCo), a joint venturer in Bridger Coal Company (BCC), which mines and supplies coal to the Jim Bridger generating plant owned in part by Idaho Power (Jim Bridger plant).</font></div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"> </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">IDACORP’s significant other wholly-owned subsidiaries include IDACORP Financial Services, Inc. (IFS), an investor in affordable housing and other real estate investments, and Ida-West Energy Company (Ida-West), an operator of small hydroelectric generation projects that satisfy the requirements of the Public Utility Regulatory Policies Act of 1978 (PURPA). </font></div></div>
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In these condensed consolidated financial statements, certain amounts in prior periods’ consolidated financial statements have been reclassified to conform with current period presentation. On IDACORP's and Idaho Power's December 31, 2017 condensed consolidated balance sheets, the "Long-term receivables" balances of </font><font style="font-family:inherit;font-size:10pt;">$4.3 million</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">$0.5 million</font><font style="font-family:inherit;font-size:10pt;">, respectively, which had previously been reported separately, were reclassified to "Other" within "Other Assets" and "Deferred Debits," respectively.</font></div></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Management makes estimates and assumptions when preparing financial statements in conformity with generally accepted accounting principles. These estimates and assumptions include those related to rate regulation, retirement benefits, contingencies, asset impairment, income taxes, unbilled revenues, and bad debt. These estimates and assumptions affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates involve judgments with respect to, among other things, future economic factors that are difficult to predict and are beyond management's control. Accordingly, actual results could differ from those estimates.</font></div></div>

Files In Submission

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$IDA
IDACORP INC Stock $ida

2018 Q4 Form 10-Q Financial Statement

#000105787718000109 Filed on November 01, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IDA IDACORP INC Stock $ida

2018 Q4 Form 10-Q Financial Statement

#000105787718000109 Filed on November 01, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IDA
IDACORP INC Stock $ida