10-K Filing

QUESTAR CORP CIK: 751652 FY 2012

Filing Information

Form Type	10-K
Accession Number	`0000751652-13-000014`
Period End Date	20121231
Filing Date	20130222
Fiscal Year	2012
Fiscal Period	FY
XBRL Instance	str-20121231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 109 Income Statement 136 Cash Flow Statement 139 Stockholders Equity 33 Comprehensive Income 33

Balance Sheet 109 line items

Line Item	Tag	Value	Unit	Period
Common Stock, No Par Value	`CommonStockNoParValue`	-	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.80M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.60M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.50M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$16.80M	USD	Point-in-time
Federal income taxes receivable	`IncomeTaxesReceivable`	$10.70M	USD	Point-in-time
Common Stock, Shares Outstanding	`CommonStockSharesOutstanding`	177.90M	shares	Point-in-time
Federal income taxes receivable	`IncomeTaxesReceivable`	-	USD	Point-in-time
Common Stock, Shares Outstanding	`CommonStockSharesOutstanding`	175.00M	shares	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$103.60M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$123.90M	USD	Point-in-time
Unbilled gas accounts receivable	`UnbilledContractsReceivable`	$78.30M	USD	Point-in-time
Unbilled gas accounts receivable	`UnbilledContractsReceivable`	$75.40M	USD	Point-in-time
Gas stored underground	`EnergyRelatedInventoryGasStoredUnderground`	$40.30M	USD	Point-in-time
Gas stored underground	`EnergyRelatedInventoryGasStoredUnderground`	$39.00M	USD	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$25.70M	USD	Point-in-time
Materials and supplies	`OtherInventorySupplies`	$24.50M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$31.70M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$46.70M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseCurrent`	$13.10M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseCurrent`	$10.70M	USD	Point-in-time
Deferred income taxes - current	`DeferredTaxAssetsNetCurrent`	$13.00M	USD	Point-in-time
Deferred income taxes - current	`DeferredTaxAssetsNetCurrent`	$16.10M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$335.40M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$345.70M	USD	Point-in-time
Distribution property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentDistribution`	$2.04B	USD	Point-in-time
Distribution property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentDistribution`	$1.93B	USD	Point-in-time
Transportation property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentTransmission`	$1.84B	USD	Point-in-time
Transportation property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentTransmission`	$1.79B	USD	Point-in-time
Cost-of-service gas and oil property, plant and equipment, successful efforts method	`CapitalizedCostsOilAndGasProducingActivitiesGross`	$1.25B	USD	Point-in-time
Cost-of-service gas and oil property, plant and equipment, successful efforts method	`CapitalizedCostsOilAndGasProducingActivitiesGross`	$1.40B	USD	Point-in-time
Other	`PropertyPlantAndEquipmentOther`	$13.10M	USD	Point-in-time
Other	`PropertyPlantAndEquipmentOther`	$54.70M	USD	Point-in-time
Total property, plant and equipment	`PropertyPlantAndEquipmentGross`	$4.98B	USD	Point-in-time
Total property, plant and equipment	`PropertyPlantAndEquipmentGross`	$5.33B	USD	Point-in-time
Distribution accumulated depreciation and amortization	`DistributionAccumulatedDepreciationAndAmortization`	$749.60M	USD	Point-in-time
Distribution accumulated depreciation and amortization	`DistributionAccumulatedDepreciationAndAmortization`	$762.80M	USD	Point-in-time
Transportation accumulated depreciation and amortization	`TransportationAccumulatedDepreciationAndAmortization`	$629.30M	USD	Point-in-time
Transportation accumulated depreciation and amortization	`TransportationAccumulatedDepreciationAndAmortization`	$586.70M	USD	Point-in-time
Cost-of-service gas and oil accumulated depreciation depletion and amortization	`CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities`	$545.00M	USD	Point-in-time
Cost-of-service gas and oil accumulated depreciation depletion and amortization	`CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities`	$617.20M	USD	Point-in-time
Other accumulated depreciation and amortization	`OtherAccumulatedDepreciationAndAmortization`	$4.40M	USD	Point-in-time
Other accumulated depreciation and amortization	`OtherAccumulatedDepreciationAndAmortization`	$7.00M	USD	Point-in-time
Total accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.02B	USD	Point-in-time
Total accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.89B	USD	Point-in-time
Total Property, Plant and Equipment, net	`PropertyPlantAndEquipmentNet`	$3.10B	USD	Point-in-time
Total Property, Plant and Equipment, net	`PropertyPlantAndEquipmentNet`	$3.32B	USD	Point-in-time
Investment in unconsolidated affiliate	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$27.30M	USD	Point-in-time
Investment in unconsolidated affiliate	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$26.50M	USD	Point-in-time
Goodwill	`Goodwill`	$9.80M	USD	Point-in-time
Goodwill	`Goodwill`	$9.80M	USD	Point-in-time
Goodwill	`Goodwill`	$9.80M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$21.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$21.60M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$36.50M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$40.90M	USD	Point-in-time
Total Other Assets	`OtherAssets`	$71.70M	USD	Point-in-time
Total Other Assets	`OtherAssets`	$67.90M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$3.37B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$3.53B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$3.76B	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$219.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$263.00M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableCurrent`	$167.50M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableCurrent`	$175.70M	USD	Point-in-time
Production and other taxes	`TaxesPayableCurrent`	$31.50M	USD	Point-in-time
Production and other taxes	`TaxesPayableCurrent`	$28.00M	USD	Point-in-time
Customer advances	`CustomerAdvancesCurrent`	$30.20M	USD	Point-in-time
Customer advances	`CustomerAdvancesCurrent`	$25.00M	USD	Point-in-time
Interest payable	`InterestPayableCurrent`	$9.50M	USD	Point-in-time
Interest payable	`InterestPayableCurrent`	$10.70M	USD	Point-in-time
Current regulatory liabilities	`RegulatoryLiabilityCurrent`	$15.40M	USD	Point-in-time
Current regulatory liabilities	`RegulatoryLiabilityCurrent`	$5.80M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$91.50M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$42.00M	USD	Point-in-time
Current portion of capital lease obligation	`CapitalLeaseObligationsCurrent`	-	USD	Point-in-time
Current portion of capital lease obligation	`CapitalLeaseObligationsCurrent`	$700.00K	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$568.80M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$546.70M	USD	Point-in-time
Long-term debt, less current portion	`LongTermDebtNoncurrent`	$1.10B	USD	Point-in-time
Long-term debt, less current portion	`LongTermDebtNoncurrent`	$993.00M	USD	Point-in-time
Capital lease obligation	`CapitalLeaseObligationsNoncurrent`	-	USD	Point-in-time
Capital lease obligation	`CapitalLeaseObligationsNoncurrent`	$39.30M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$500.20M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$603.40M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$60.90M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$63.80M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$67.20M	USD	Point-in-time
Defined benefit pension plan	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$246.90M	USD	Point-in-time
Defined benefit pension plan	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$255.00M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementBenefitsPayableNoncurrent`	$56.80M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementBenefitsPayableNoncurrent`	$54.70M	USD	Point-in-time
Customer contributions in aid of construction	`CustomerContributionsInAidOfConstruction`	$26.60M	USD	Point-in-time
Customer contributions in aid of construction	`CustomerContributionsInAidOfConstruction`	$22.90M	USD	Point-in-time
Regulatory and other noncurrent liabilities	`RegulatoryAndOtherNoncurrentLiabilities`	$37.20M	USD	Point-in-time
Regulatory and other noncurrent liabilities	`RegulatoryAndOtherNoncurrentLiabilities`	$39.40M	USD	Point-in-time
Commitments and contingencies - Note 8	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies - Note 8	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock	`CommonStockValue`	$442.40M	USD	Point-in-time
Common stock	`CommonStockValue`	$514.70M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$744.90M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$839.50M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-246.30M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-226.10M	USD	Point-in-time
Total Common Shareholders' Equity	`StockholdersEquity`	$1.03B	USD	Point-in-time
Total Common Shareholders' Equity	`StockholdersEquity`	$1.04B	USD	Point-in-time
TOTAL LIABILITIES AND COMMON SHAREHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$3.53B	USD	Point-in-time
TOTAL LIABILITIES AND COMMON SHAREHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$3.76B	USD	Point-in-time

Income Statement 136 line items

Line Item	Tag	Value	Unit	Period
Questar Gas / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueDistribution`	$901.80M	USD	Annual
Questar Gas / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueDistribution`	$859.70M	USD	Annual
Questar Gas / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueDistribution`	$965.50M	USD	Annual
Wexpro	`NaturalGasProductionRevenue`	$31.50M	USD	Annual
Wexpro	`NaturalGasProductionRevenue`	$24.60M	USD	Annual
Wexpro	`NaturalGasProductionRevenue`	$36.10M	USD	Annual
Questar Pipeline / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueTransmission`	$197.40M	USD	Annual
Questar Pipeline / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueTransmission`	$197.20M	USD	Annual
Questar Pipeline / Revenues from unaffiliated customers	`GasDomesticRegulatedRevenueTransmission`	$203.10M	USD	Annual
Total Revenues	`Revenues`	$1.12B	USD	Annual
Total Revenues	`Revenues`	$1.10B	USD	Annual
Total Revenues	`Revenues`	$222.90M	USD	1 Quarter
Total Revenues	`Revenues`	$354.80M	USD	1 Quarter
Total Revenues	`Revenues`	$343.00M	USD	1 Quarter
Total Revenues	`Revenues`	$141.80M	USD	1 Quarter
Total Revenues	`Revenues`	$425.70M	USD	1 Quarter
Total Revenues	`Revenues`	$188.40M	USD	1 Quarter
Total Revenues	`Revenues`	$470.00M	USD	1 Quarter
Total Revenues	`Revenues`	$146.70M	USD	1 Quarter
Total Revenues	`Revenues`	$1.19B	USD	Annual
Cost of sales (excluding operating expenses shown separately)	`CostOfGoodsSoldOilAndGas`	$321.50M	USD	Annual
Cost of sales (excluding operating expenses shown separately)	`CostOfGoodsSoldOilAndGas`	$192.30M	USD	Annual
Cost of sales (excluding operating expenses shown separately)	`CostOfGoodsSoldOilAndGas`	$280.90M	USD	Annual
Operating and maintenance	`CostOfPropertyRepairsAndMaintenance`	$175.80M	USD	Annual
Operating and maintenance	`CostOfPropertyRepairsAndMaintenance`	$175.90M	USD	Annual
Operating and maintenance	`CostOfPropertyRepairsAndMaintenance`	$180.80M	USD	Annual
General and administrative	`GeneralAndAdministrativeExpense`	$117.90M	USD	Annual
General and administrative	`GeneralAndAdministrativeExpense`	$120.80M	USD	Annual
General and administrative	`GeneralAndAdministrativeExpense`	$108.50M	USD	Annual
Retirement incentive	`OtherRestructuringCosts`	-	USD	Annual
Retirement incentive	`OtherRestructuringCosts`	$4.90M	USD	Annual
Retirement incentive	`OtherRestructuringCosts`	-	USD	Annual
Separation costs	`SeveranceCosts`	-	USD	Annual
Separation costs	`SeveranceCosts`	$11.50M	USD	Annual
Separation costs	`SeveranceCosts`	-	USD	Annual
Production and other taxes	`TaxesOther`	$47.90M	USD	Annual
Production and other taxes	`TaxesOther`	$50.60M	USD	Annual
Production and other taxes	`TaxesOther`	$52.50M	USD	Annual
Depreciation, depletion and amortization	`DepreciationAndAmortization`	$153.40M	USD	Annual
Depreciation, depletion and amortization	`DepreciationAndAmortization`	$181.60M	USD	Annual
Depreciation, depletion and amortization	`DepreciationAndAmortization`	$159.90M	USD	Annual
Total Operating Expenses	`OperatingExpenses`	$780.70M	USD	Annual
Total Operating Expenses	`OperatingExpenses`	$827.70M	USD	Annual
Total Operating Expenses	`OperatingExpenses`	$728.30M	USD	Annual
Net gain from asset sales	`GainLossOnDispositionOfAssets`	$400.00K	USD	Annual
Net gain from asset sales	`GainLossOnDispositionOfAssets`	$200.00K	USD	Annual
Net gain from asset sales	`GainLossOnDispositionOfAssets`	$5.10M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$73.70M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$130.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$366.90M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$63.60M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$72.60M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$343.30M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$375.70M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$108.60M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$63.80M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$106.60M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$122.80M	USD	1 Quarter
Interest and other income	`InvestmentIncomeNonoperating`	$10.40M	USD	Annual
Interest and other income	`InvestmentIncomeNonoperating`	$11.70M	USD	Annual
Interest and other income	`InvestmentIncomeNonoperating`	$7.00M	USD	Annual
Income from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.80M	USD	Annual
Income from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.80M	USD	Annual
Income from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.70M	USD	Annual
Interest expense	`InterestExpense`	$57.90M	USD	Annual
Interest expense	`InterestExpense`	$56.80M	USD	Annual
Interest expense	`InterestExpense`	$57.10M	USD	Annual
Income From Continuing Operations Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$324.30M	USD	Annual
Income From Continuing Operations Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$301.70M	USD	Annual
Income From Continuing Operations Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$328.50M	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$116.40M	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$116.50M	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$109.40M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperations`	$192.30M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperations`	$212.00M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperations`	$207.90M	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$148.20M	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	$1.30M	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Total Discontinued Operations, Net Of Income Taxes	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	-	USD	Annual
Total Discontinued Operations, Net Of Income Taxes	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	-	USD	Annual
Total Discontinued Operations, Net Of Income Taxes	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$146.90M	USD	Annual
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$339.20M	USD	Annual
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$40.30M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$33.80M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$69.90M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$75.20M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$63.80M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$39.20M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$61.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$207.90M	USD	Annual
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$36.10M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO QUESTAR	`NetIncomeLoss`	$212.00M	USD	Annual
Basic from continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.20	USD	Annual
Basic from continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.17	USD	Annual
Basic from continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.09	USD	Annual
Basic from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Basic from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Basic from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.84	USD	Annual
Basic total	`EarningsPerShareBasic`	$0.34	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$0.21	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$0.22	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$0.36	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$1.17	USD	Annual
Basic total	`EarningsPerShareBasic`	$1.20	USD	Annual
Basic total	`EarningsPerShareBasic`	$0.42	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$0.22	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$0.40	USD	1 Quarter
Basic total	`EarningsPerShareBasic`	$1.93	USD	Annual
Basic total	`EarningsPerShareBasic`	$0.20	USD	1 Quarter
Diluted from continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.16	USD	Annual
Diluted from continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.08	USD	Annual
Diluted from continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.19	USD	Annual
Diluted from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Diluted from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Diluted from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.83	USD	Annual
Diluted total	`EarningsPerShareDiluted`	$0.20	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$1.19	USD	Annual
Diluted total	`EarningsPerShareDiluted`	$0.19	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$1.16	USD	Annual
Diluted total	`EarningsPerShareDiluted`	$0.39	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$0.36	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$1.91	USD	Annual
Diluted total	`EarningsPerShareDiluted`	$0.22	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$0.42	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$0.22	USD	1 Quarter
Diluted total	`EarningsPerShareDiluted`	$0.34	USD	1 Quarter
Used in basic calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	176.50M	shares	Annual
Used in basic calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	175.40M	shares	Annual
Used in basic calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	177.40M	shares	Annual
Used in diluted calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	178.80M	shares	Annual
Used in diluted calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	178.00M	shares	Annual
Used in diluted calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	177.50M	shares	Annual

Cash Flow Statement 139 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$207.90M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$340.50M	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Discontinued operations, net of income taxes	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$148.20M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$189.20M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$161.80M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$169.40M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$91.40M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$96.20M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$118.60M	USD	Annual
Share-based compensation	`ShareBasedCompensation`	$10.10M	USD	Annual
Share-based compensation	`ShareBasedCompensation`	$9.90M	USD	Annual
Share-based compensation	`ShareBasedCompensation`	$15.40M	USD	Annual
Net (gain) from asset sales	`GainLossOnSaleOfPropertyPlantEquipment`	$5.10M	USD	Annual
Net (gain) from asset sales	`GainLossOnSaleOfPropertyPlantEquipment`	$400.00K	USD	Annual
Net (gain) from asset sales	`GainLossOnSaleOfPropertyPlantEquipment`	$200.00K	USD	Annual
(Income) from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.80M	USD	Annual
(Income) from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.80M	USD	Annual
(Income) from unconsolidated affiliate	`IncomeLossFromEquityMethodInvestments`	$3.70M	USD	Annual
Distributions from unconsolidated affiliate	`EquityMethodInvestmentDividendsOrDistributions`	$4.00M	USD	Annual
Distributions from unconsolidated affiliate	`EquityMethodInvestmentDividendsOrDistributions`	$4.40M	USD	Annual
Distributions from unconsolidated affiliate	`EquityMethodInvestmentDividendsOrDistributions`	$4.50M	USD	Annual
Other operating	`OtherNoncashIncomeExpense`	$-400.00K	USD	Annual
Other operating	`OtherNoncashIncomeExpense`	$-100.00K	USD	Annual
Other operating	`OtherNoncashIncomeExpense`	$1.50M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-23.70M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-2.90M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-7.70M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$3.30M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-2.50M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-100.00K	USD	Annual
Prepaid expenses	`IncreaseDecreaseInPrepaidExpense`	$2.10M	USD	Annual
Prepaid expenses	`IncreaseDecreaseInPrepaidExpense`	-	USD	Annual
Prepaid expenses	`IncreaseDecreaseInPrepaidExpense`	$2.80M	USD	Annual
Interest rate hedge - current	`IncreaseDecreaseInRiskManagementAssetsAndLiabilities`	-	USD	Annual
Interest rate hedge - current	`IncreaseDecreaseInRiskManagementAssetsAndLiabilities`	$37.30M	USD	Annual
Interest rate hedge - current	`IncreaseDecreaseInRiskManagementAssetsAndLiabilities`	$-7.60M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$11.70M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-5.10M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-18.40M	USD	Annual
Federal income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$37.10M	USD	Annual
Federal income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-33.80M	USD	Annual
Federal income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-10.70M	USD	Annual
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$24.60M	USD	Annual
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$34.80M	USD	Annual
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$-31.20M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$24.30M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$40.10M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$48.70M	USD	Annual
Net Cash Provided By Operating Activities Of Continuing Operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$489.00M	USD	Annual
Net Cash Provided By Operating Activities Of Continuing Operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$350.90M	USD	Annual
Net Cash Provided By Operating Activities Of Continuing Operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$467.70M	USD	Annual
Property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$367.70M	USD	Annual
Property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$370.70M	USD	Annual
Property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$320.30M	USD	Annual
Equity investment in QEP	`AdvancesToUnconsolidatedAffiliate`	$250.00M	USD	2 Qtrs
Equity investment in QEP	`AdvancesToUnconsolidatedAffiliate`	$250.00M	USD	Annual
Equity investment in QEP	`AdvancesToUnconsolidatedAffiliate`	-	USD	Annual
Equity investment in QEP	`AdvancesToUnconsolidatedAffiliate`	-	USD	Annual
Cash used in disposition of assets	`PaymentsForProceedsFromRemovalCosts`	$3.00M	USD	Annual
Cash used in disposition of assets	`PaymentsForProceedsFromRemovalCosts`	$3.50M	USD	Annual
Cash used in disposition of assets	`PaymentsForProceedsFromRemovalCosts`	$2.60M	USD	Annual
Proceeds from disposition of assets and other	`ProceedsFromSaleOfProductiveAssets`	$300.00K	USD	Annual
Proceeds from disposition of assets and other	`ProceedsFromSaleOfProductiveAssets`	$600.00K	USD	Annual
Proceeds from disposition of assets and other	`ProceedsFromSaleOfProductiveAssets`	$8.40M	USD	Annual
Change in notes receivable	`IncreaseDecreaseInNotesReceivables`	$-39.30M	USD	Annual
Change in notes receivable	`IncreaseDecreaseInNotesReceivables`	-	USD	Annual
Change in notes receivable	`IncreaseDecreaseInNotesReceivables`	-	USD	Annual
Distribution from QEP	`ProceedsFromDividendsReceived`	-	USD	Annual
Distribution from QEP	`ProceedsFromDividendsReceived`	-	USD	Annual
Distribution from QEP	`ProceedsFromDividendsReceived`	$7.30M	USD	Annual
Net Cash Used In Investing Activities Of Continuing Operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-365.30M	USD	Annual
Net Cash Used In Investing Activities Of Continuing Operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-525.70M	USD	Annual
Net Cash Used In Investing Activities Of Continuing Operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-370.90M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$7.60M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$7.20M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$17.90M	USD	Annual
Common stock repurchased	`PaymentsForRepurchaseOfCommonStock`	$4.90M	USD	Annual
Common stock repurchased	`PaymentsForRepurchaseOfCommonStock`	$87.50M	USD	Annual
Common stock repurchased	`PaymentsForRepurchaseOfCommonStock`	$11.10M	USD	Annual
Long-term debt issued, net of issuance costs	`ProceedsFromIssuanceOfLongTermDebt`	$244.60M	USD	Annual
Long-term debt issued, net of issuance costs	`ProceedsFromIssuanceOfLongTermDebt`	$174.90M	USD	Annual
Long-term debt issued, net of issuance costs	`ProceedsFromIssuanceOfLongTermDebt`	$148.80M	USD	Annual
Long-term debt repaid	`RepaymentsOfLongTermDebt`	$182.00M	USD	Annual
Long-term debt repaid	`RepaymentsOfLongTermDebt`	-	USD	Annual
Long-term debt repaid	`RepaymentsOfLongTermDebt`	$91.50M	USD	Annual
Capital lease obligation repaid	`RepaymentsOfLongTermCapitalLeaseObligations`	-	USD	Annual
Capital lease obligation repaid	`RepaymentsOfLongTermCapitalLeaseObligations`	$800.00K	USD	Annual
Capital lease obligation repaid	`RepaymentsOfLongTermCapitalLeaseObligations`	-	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-23.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$73.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$44.00M	USD	Annual
Change in notes payable	`ProceedsFromRepaymentsOfNotesPayable`	-	USD	Annual
Change in notes payable	`ProceedsFromRepaymentsOfNotesPayable`	$-52.90M	USD	Annual
Change in notes payable	`ProceedsFromRepaymentsOfNotesPayable`	-	USD	Annual
Dividends paid	`PaymentsOfDividends`	$117.40M	USD	Annual
Dividends paid	`PaymentsOfDividends`	$94.80M	USD	Annual
Dividends paid	`PaymentsOfDividends`	$110.10M	USD	Annual
Tax benefits from share-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	$8.40M	USD	Annual
Tax benefits from share-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	$9.20M	USD	Annual
Tax benefits from share-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	-	USD	Annual
Net Cash Provided By (Used in) Financing Activities Of Continuing Operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-97.20M	USD	Annual
Net Cash Provided By (Used in) Financing Activities Of Continuing Operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$185.10M	USD	Annual
Net Cash Provided By (Used in) Financing Activities Of Continuing Operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-128.30M	USD	Annual
CASH PROVIDED BY (USED IN) CONTINUING OPERATIONS	`NetCashProvidedByUsedInContinuingOperations`	$-10.20M	USD	Annual
CASH PROVIDED BY (USED IN) CONTINUING OPERATIONS	`NetCashProvidedByUsedInContinuingOperations`	$10.30M	USD	Annual
CASH PROVIDED BY (USED IN) CONTINUING OPERATIONS	`NetCashProvidedByUsedInContinuingOperations`	$5.20M	USD	Annual
Cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	-	USD	Annual
Cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$475.50M	USD	Annual
Cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	-	USD	Annual
Cash used in investing activities of discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	Annual
Cash used in investing activities of discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	Annual
Cash used in investing activities of discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-598.60M	USD	Annual
Cash provided by (used in) financing activities of discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Cash provided by (used in) financing activities of discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$103.80M	USD	Annual
Cash provided by (used in) financing activities of discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Effect of change in cash and cash equivalents of discontinued operations	`NetCashProvidedByUsedInDiscontinuedOperations`	-	USD	Annual
Effect of change in cash and cash equivalents of discontinued operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$19.30M	USD	Annual
Effect of change in cash and cash equivalents of discontinued operations	`NetCashProvidedByUsedInDiscontinuedOperations`	-	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$10.30M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$5.20M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-10.20M	USD	Annual
Beginning cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.80M	USD	Point-in-time
Beginning cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.60M	USD	Point-in-time
Beginning cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.50M	USD	Point-in-time
Beginning cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$16.80M	USD	Point-in-time
Ending cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$16.80M	USD	Point-in-time
Ending cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.80M	USD	Point-in-time
Ending cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.60M	USD	Point-in-time
Ending cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$11.50M	USD	Point-in-time
Interest	`InterestPaidNet`	$54.20M	USD	Annual
Interest	`InterestPaidNet`	$55.40M	USD	Annual
Interest	`InterestPaidNet`	$58.50M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$-29.20M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$9.10M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$44.60M	USD	Annual
Capital lease obligation incurred	`CapitalLeaseObligationsIncurred`	$40.80M	USD	Annual

Stockholders Equity 33 line items

Line Item	Tag	Value	Unit	Period
Dividends paid per common share	`CommonStockDividendsPerShareCashPaid`	$0.54	USD	Annual
Dividends paid per common share	`CommonStockDividendsPerShareCashPaid`	$0.67	USD	Annual
Dividends paid per common share	`CommonStockDividendsPerShareCashPaid`	$0.62	USD	Annual
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.03B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.56B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.04B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.04B	USD	Point-in-time
Common stock issued	`StockIssuedDuringPeriodValueNewIssues`	$18.40M	USD	Annual
Common stock issued	`StockIssuedDuringPeriodValueNewIssues`	$7.60M	USD	Annual
Common stock issued	`StockIssuedDuringPeriodValueNewIssues`	$7.20M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$11.10M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$4.90M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$88.50M	USD	Annual
Dividends paid	`DividendsCommonStockCash`	$94.80M	USD	Annual
Dividends paid	`DividendsCommonStockCash`	$117.40M	USD	Annual
Dividends paid	`DividendsCommonStockCash`	$110.10M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$9.80M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$22.50M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$9.00M	USD	Annual
Tax benefits from share-based compensation	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$9.20M	USD	Annual
Tax benefits from share-based compensation	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$8.40M	USD	Annual
Spinoff of QEP	`StockholdersEquityNoteSpinoffTransaction`	$-2.73B	USD	Annual
Distribution to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$2.40M	USD	Annual
Net income	`ProfitLoss`	$207.90M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$340.50M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-73.70M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-20.20M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-122.10M	USD	Annual
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.04B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.03B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.56B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.04B	USD	Point-in-time

Comprehensive Income 33 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$207.90M	USD	Annual
Net income	`ProfitLoss`	$212.00M	USD	Annual
Net income	`ProfitLoss`	$340.50M	USD	Annual
Change in unrecognized actuarial loss	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-162.90M	USD	Annual
Change in unrecognized actuarial loss	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$17.70M	USD	Annual
Change in unrecognized actuarial loss	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-35.70M	USD	Annual
Change in unrecognized prior-service costs	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	$-2.70M	USD	Annual
Change in unrecognized prior-service costs	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	$-3.80M	USD	Annual
Change in unrecognized prior-service costs	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	$-3.00M	USD	Annual
Interest rate cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnInterestRateCashFlowHedgesBeforeTax`	$-37.20M	USD	Annual
Interest rate cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnInterestRateCashFlowHedgesBeforeTax`	-	USD	Annual
Interest rate cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnInterestRateCashFlowHedgesBeforeTax`	$400.00K	USD	Annual
Change in fair value of long-term investment	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	$100.00K	USD	Annual
Change in fair value of long-term investment	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	-	USD	Annual
Change in fair value of long-term investment	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	$100.00K	USD	Annual
Change in unrealized fair value of derivatives held by QEP	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	Annual
Change in unrealized fair value of derivatives held by QEP	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-138.70M	USD	Annual
Change in unrealized fair value of derivatives held by QEP	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	Annual
Income taxes	`OtherComprehensiveIncomeLossTax`	$-75.00M	USD	Annual
Income taxes	`OtherComprehensiveIncomeLossTax`	$-43.40M	USD	Annual
Income taxes	`OtherComprehensiveIncomeLossTax`	$-12.30M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-73.70M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-20.20M	USD	Annual
Net other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-122.10M	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$85.80M	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$191.80M	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$266.80M	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	$1.30M	USD	Annual
Discontinued operations, noncontrolling interest	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO QUESTAR	`ComprehensiveIncomeNetOfTax`	$85.80M	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO QUESTAR	`ComprehensiveIncomeNetOfTax`	$191.80M	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO QUESTAR	`ComprehensiveIncomeNetOfTax`	$265.50M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.