10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q3 2013

Filing Information

Form Type	10-Q
Accession Number	`0001193125-13-431711`
Period End Date	20130930
Filing Date	20131107
Fiscal Year	2013
Fiscal Period	Q3
XBRL Instance	swx-20130930.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 91 Income Statement 136 Cash Flow Statement 134 Stockholders Equity 72

Balance Sheet 91 line items

Line Item	Tag	Value	Unit	Period
Common stock, par	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.02B	USD	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.34M	shares	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.15M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.16B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.34M	shares	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.15M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.84B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.75B	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$776.00K	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$911.00K	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$108.91M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$74.18M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.34B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.43B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$257.34M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$242.10M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.85M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$25.53M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$22.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$19.84M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.94M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$196.91M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$155.60M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$31.30M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$72.00M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$4.70M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$2.94M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$48.37M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$47.09M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$2.70M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$6.03M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$107.91M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$91.68M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$458.42M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$348.19M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$431.13M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$443.75M	USD	Point-in-time
Total assets	`Assets`	$4.47B	USD	Point-in-time
Total assets	`Assets`	$4.49B	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,340,002 and 46,147,788 shares)	`CommonStockValue`	$47.78M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,340,002 and 46,147,788 shares)	`CommonStockValue`	$47.97M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$835.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$828.78M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-47.24M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-50.74M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$525.97M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$484.37M	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.36B	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.31B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-2.01M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-1.68M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.31B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.36B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.28B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.27B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.58B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.64B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$50.14M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$11.05M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	-	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$33.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$155.67M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$101.14M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$77.86M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$73.73M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$38.36M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$37.64M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$17.07M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.08M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$98.96M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$16.91M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$115.14M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$98.79M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$535.13M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$406.39M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$616.18M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$663.32M	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$351.00K	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$551.00K	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$256.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$272.00M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$503.32M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$481.94M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.38B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.42B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.49B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.47B	USD	Point-in-time

Income Statement 136 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$195.03M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$195.57M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.36B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.27B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$927.50M	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$982.20M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$457.01M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$633.97M	USD	Annual
Construction revenues	`ConstructionRevenue`	$484.93M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$192.31M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$176.23M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$594.21M	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$387.35M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.90B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$371.80M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.41B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.96B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.44B	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$47.75M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$53.28M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$409.36M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$533.45M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$387.98M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$317.74M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$90.63M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$278.36M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$95.98M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$288.00M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$379.62M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$368.11M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$176.25M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$218.27M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$56.72M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$233.25M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$166.42M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$58.74M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$44.68M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$11.15M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$41.26M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.60M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$31.07M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$34.02M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$419.07M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$422.97M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$537.53M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$154.27M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$167.58M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$545.42M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.24B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$1.61B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$365.49M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.28B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$381.20M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.70B	USD	Annual
Operating income	`OperatingIncomeLoss`	$6.14M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$156.31M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$258.24M	USD	Annual
Operating income	`OperatingIncomeLoss`	$288.65M	USD	Annual
Operating income	`OperatingIncomeLoss`	$6.31M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$173.44M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$15.10M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$46.27M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$68.80M	USD	Annual
Net interest deductions	`InterestExpense`	$16.41M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$62.46M	USD	Annual
Net interest deductions	`InterestExpense`	$51.82M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$8.19M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$8.03M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$2.67M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.64M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$4.57M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$5.98M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-62.83M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-14.77M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-47.25M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-54.44M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-12.43M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-38.08M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-6.29M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-8.46M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$135.37M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$109.07M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$234.22M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$195.41M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$47.68M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$84.43M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-4.05M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$69.73M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$38.53M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-3.23M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$149.79M	USD	Annual
Net income (loss)	`ProfitLoss`	$70.53M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$-3.06M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$125.68M	USD	Annual
Net income (loss)	`ProfitLoss`	$87.68M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$-4.41M	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-109.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-193.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-405.00K	USD	3 Qtrs
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-586.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-333.00K	USD	3 Qtrs
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-620.00K	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$70.94M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$88.02M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$150.41M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$126.26M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-2.86M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-4.30M	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.90	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.74	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.06	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.54	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$3.25	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.09	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.88	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.09	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.06	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.72	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.52	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$3.22	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.33	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.15	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.28	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.89	USD	3 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.29	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.99	USD	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.31M	shares	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.34M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.06M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.11M	shares	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.13M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.27M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.70M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.73M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.53M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.49M	shares	Annual

Cash Flow Statement 134 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$149.79M	USD	Annual
Net income	`ProfitLoss`	$70.53M	USD	3 Qtrs
Net income	`ProfitLoss`	$-3.06M	USD	1 Quarter
Net income	`ProfitLoss`	$125.68M	USD	Annual
Net income	`ProfitLoss`	$87.68M	USD	3 Qtrs
Net income	`ProfitLoss`	$-4.41M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$176.25M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$56.72M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$218.27M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$58.74M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$233.25M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$166.42M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$62.32M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$76.64M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$33.34M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$43.70M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$32.17M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-41.31M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$3.85M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-57.50M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-1.10M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$1.10M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-40.70M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-40.10M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-29.30M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$108.74M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-52.85M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$78.71M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-11.85M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-93.61M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$12.79M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-54.82M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$645.00K	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-189.00K	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-938.00K	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.24M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$11.94M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-27.79M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-20.79M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.61M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$5.85M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$6.52M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$2.99M	USD	3 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$4.51M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.37M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.21M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.44M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.06M	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.66M	USD	3 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.31M	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.29M	USD	3 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.82M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$22.45M	USD	3 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$25.09M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$12.73M	USD	3 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$9.24M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$5.45M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$7.52M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-2.35M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-47.02M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$330.32M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$268.54M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$338.02M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$324.55M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$393.33M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$374.18M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$254.44M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$275.97M	USD	3 Qtrs
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-12.79M	USD	3 Qtrs
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-37.78M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$23.39M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$5.20M	USD	3 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$-24.22M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-21.21M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$6.41M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$8.77M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$12.65M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$11.60M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.00M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.00M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-277.63M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-339.19M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-242.83M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-369.12M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$4.13M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.46M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.45M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.57M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$44.24M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$51.60M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$57.85M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$39.43M	USD	3 Qtrs
Interest rate swap settlement	`PaymentsForHedgeFinancingActivities`	$21.75M	USD	3 Qtrs
Interest rate swap settlement	`PaymentsForHedgeFinancingActivities`	$21.75M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$63.67M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$99.55M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$515.42M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$453.64M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$377.46M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$130.27M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$179.85M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$432.87M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$-69.00M	USD	3 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$20.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$110.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$39.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$33.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$33.00M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-37.39M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$33.34M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-52.54M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$6.42M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-8.23M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-11.68M	USD	3 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$2.24M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$142.00K	USD	3 Qtrs
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$21.94M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$19.84M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$22.08M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$25.53M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$13.85M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$21.94M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$19.84M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$22.08M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$25.53M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$13.85M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$70.52M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$58.08M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$41.16M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$89.56M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$5.80M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$4.93M	USD	3 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$2.05M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$1.97M	USD	3 Qtrs

Stockholders Equity 72 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$149.79M	USD	Annual
Net income (loss)	`ProfitLoss`	$70.53M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$-3.06M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$125.68M	USD	Annual
Net income (loss)	`ProfitLoss`	$87.68M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$-4.41M	USD	1 Quarter
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$84.00M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$46.41M	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-537.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-403.00K	USD	3 Qtrs
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-135.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-135.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-11.90M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-19.86M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-5.30M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-3.97M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-14.32M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-15.89M	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$-164.00K	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$-55.00K	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$1.34M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$10.88M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$14.11M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-61.48M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$4.70M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-23.29M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$3.62M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.67M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.95M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.43M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$4.46M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-651.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-476.00K	USD	1 Quarter
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$857.00K	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$1.83M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.40M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-518.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.22M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.07M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.55M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.26M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$3.05M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.55M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-5.41M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$994.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.17M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$4.48M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.39M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.51M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$120.26M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$91.19M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$75.01M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-3.42M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-1.89M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$147.40M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-193.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-620.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-333.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-405.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-109.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-586.00K	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$120.85M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$91.52M	USD	3 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-3.31M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-1.70M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$75.42M	USD	3 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$148.02M	USD	Annual

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