10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q2 2012

Filing Information

Form Type	10-Q
Accession Number	`0001193125-12-343191`
Period End Date	20120630
Filing Date	20120808
Fiscal Year	2012
Fiscal Period	Q2
XBRL Instance	swx-20120630.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 89 Income Statement 137 Cash Flow Statement 134 Comprehensive Income 73

Balance Sheet 89 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`	60.00B	shares	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00B	shares	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	45.96B	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$4.88B	USD	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.13B	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$4.81B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.13B	shares	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	45.96B	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.64B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.70B	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$1.00M	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$1.09M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$44.89M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$74.67M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.26B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.22B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$230.98M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$192.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsNoncurrent`	$12.79M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$85.96M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.56M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.31M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.94M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$209.25M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$154.83M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$29.20M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$70.30M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$7.79M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$5.99M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$53.44M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$50.37M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$2.32M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$82.66M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$96.60M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$461.63M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$355.61M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$390.64M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$385.56M	USD	Point-in-time
Total assets	`Assets`	$4.28B	USD	Point-in-time
Total assets	`Assets`	$4.23B	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,128,347 and 45,956,088 shares)	`CommonStockValue`	$47.59M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,128,347 and 45,956,088 shares)	`CommonStockValue`	$47.76M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$821.64M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$826.23M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-45.84M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-49.33M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$453.82M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$406.12M	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.23B	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.28B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-1.28M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-989.00K	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.28B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.23B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$930.86M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.20B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.48B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.16B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$19.40M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$322.62M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$82.39M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$186.75M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$81.23M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$83.84M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$42.10M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$33.99M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.70M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.99M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$72.43M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$116.87M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$116.52M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$123.13M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$847.57M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$467.40M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$594.43M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$557.12M	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$828.00K	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$690.00K	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$245.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$233.00M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$481.60M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$441.39M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.28B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.27B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.28B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.23B	USD	Point-in-time

Income Statement 137 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$273.41M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.36B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.42B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$827.27M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$786.63M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$255.92M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$373.34M	USD	Annual
Construction revenues	`ConstructionRevenue`	$280.78M	USD	2 Qtrs
Construction revenues	`ConstructionRevenue`	$115.09M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$153.85M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$189.68M	USD	2 Qtrs
Construction revenues	`ConstructionRevenue`	$574.93M	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.07B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.94B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$409.77M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.02B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$388.50M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.79B	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$400.86M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$91.96M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$117.06M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$637.04M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$334.71M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$547.33M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$366.57M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$360.96M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$187.73M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$179.66M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$88.71M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$91.88M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$98.28M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$211.89M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$109.70M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$193.88M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$49.41M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$55.54M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$39.65M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$41.25M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$9.73M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.30M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$20.16M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$20.46M	USD	2 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$171.08M	USD	2 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$517.43M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$264.81M	USD	2 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$145.27M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$102.46M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$327.94M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$917.41M	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$394.39M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$367.94M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.56B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$870.04M	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$1.68B	USD	Annual
Operating income	`OperatingIncomeLoss`	$233.26M	USD	Annual
Operating income	`OperatingIncomeLoss`	$15.38M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$150.00M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$146.90M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$20.57M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$253.18M	USD	Annual
Net interest deductions	`InterestExpense`	$18.25M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$35.41M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$35.31M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$17.36M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$73.81M	USD	Annual
Net interest deductions	`InterestExpense`	$69.70M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$2.94M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-3.75M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-2.49M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.27M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.55M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$10.80M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-73.45M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-34.04M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-63.01M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-15.80M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-20.74M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-32.47M	USD	2 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$117.53M	USD	2 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$179.73M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$112.86M	USD	2 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$4.76M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$170.24M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-5.36M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$57.89M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$65.39M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$42.58M	USD	2 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$751.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.47M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$40.49M	USD	2 Qtrs
Net income (loss)	`ProfitLoss`	$112.35M	USD	Annual
Net income (loss)	`ProfitLoss`	$74.95M	USD	2 Qtrs
Net income (loss)	`ProfitLoss`	$-3.89M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$72.37M	USD	2 Qtrs
Net income (loss)	`ProfitLoss`	$114.34M	USD	Annual
Net income (loss)	`ProfitLoss`	$4.01M	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-212.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-296.00K	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-413.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-583.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-42.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-237.00K	USD	2 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$114.93M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$75.24M	USD	2 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$112.77M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-3.68M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$4.05M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$72.60M	USD	2 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.63	USD	2 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$0.09	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.58	USD	2 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.47	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.50	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.08	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.08	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$0.09	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.62	USD	2 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.45	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.57	USD	2 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.48	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.12	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.29	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.27	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.53	USD	2 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.59	USD	2 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.03	USD	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.09M	shares	2 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.66M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.00M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.81M	shares	2 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.11M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.86M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.42M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.30M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.09M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.24M	shares	2 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.50M	shares	2 Qtrs

Cash Flow Statement 134 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$74.95M	USD	2 Qtrs
Net income	`ProfitLoss`	$-3.89M	USD	1 Quarter
Net income	`ProfitLoss`	$72.37M	USD	2 Qtrs
Net income	`ProfitLoss`	$114.34M	USD	Annual
Net income	`ProfitLoss`	$4.01M	USD	1 Quarter
Net income	`ProfitLoss`	$112.35M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$98.28M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$109.70M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$211.89M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$55.54M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$193.88M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$49.41M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$84.12M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$35.17M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$38.24M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$59.54M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-54.42M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$16.99M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-25.74M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$32.96M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-2.50M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$100.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-32.70M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-41.10M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-18.06M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$36.52M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$24.18M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-46.77M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-102.67M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$29.97M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-16.77M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-70.08M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$9.96M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.42M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-27.56M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-6.44M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-13.54M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-11.46M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.19M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-28.34M	USD	2 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$2.29M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$5.30M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$3.29M	USD	2 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$1.30M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.77M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$3.66M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$3.15M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.62M	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$714.00K	USD	2 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.55M	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$318.00K	USD	2 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$777.00K	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$14.27M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$9.18M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$31.15M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$-16.12M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$7.01M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-11.20M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-12.92M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-56.31M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$325.21M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$188.29M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$300.69M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$261.45M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$260.43M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$139.10M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$176.38M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$418.27M	USD	Annual
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-12.79M	USD	2 Qtrs
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$1.00K	USD	2 Qtrs
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$4.00K	USD	Annual
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-37.78M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-19.75M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-3.01M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-1.81M	USD	2 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$-13.80M	USD	2 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$10.17M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$5.10M	USD	2 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$2.62M	USD	2 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$5.04M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.72M	USD	2 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$1.03M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.72M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$1.03M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-173.33M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-141.02M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-261.12M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-391.11M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$9.37M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$3.99M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$4.73M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.31M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$23.60M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$25.82M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$50.15M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$46.35M	USD	Annual
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	2 Qtrs
Interest rate swap settlement	`InterestRateSwapSettlement`	$11.69M	USD	Annual
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$400.80M	USD	2 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$288.84M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$510.52M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$164.88M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$323.04M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$226.08M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$223.41M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$430.11M	USD	Annual
Change in credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-109.00M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-77.50M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-77.40M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$12.50M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$14.09M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$10.63M	USD	2 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$53.65M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-30.13M	USD	2 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-53.40M	USD	Annual
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$85.96M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$32.56M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$32.31M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$21.94M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$32.56M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$32.31M	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`	$85.96M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$37.02M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$89.28M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$86.03M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$56.45M	USD	2 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-3.56M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-14.59M	USD	2 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$1.77M	USD	2 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$2.72M	USD	Annual

Comprehensive Income 73 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$74.95M	USD	2 Qtrs
Net income (loss)	`ProfitLoss`	$-3.89M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$72.37M	USD	2 Qtrs
Net income (loss)	`ProfitLoss`	$114.34M	USD	Annual
Net income (loss)	`ProfitLoss`	$4.01M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$112.35M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$84.00M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$5.62M	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$536.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$135.00K	USD	1 Quarter
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$537.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$269.00K	USD	2 Qtrs
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$268.00K	USD	2 Qtrs
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$134.00K	USD	1 Quarter
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$3.97M	USD	1 Quarter
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$12.76M	USD	Annual
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$8.58M	USD	Annual
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$2.41M	USD	1 Quarter
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$4.83M	USD	2 Qtrs
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$7.94M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-62.88M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$7.25M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$2.23M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$706.00K	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$3.63M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$4.46M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-320.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.83M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.80M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-476.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-640.00K	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-952.00K	USD	2 Qtrs
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-1.95M	USD	2 Qtrs
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-2.37M	USD	1 Quarter
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-205.00K	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$1.83M	USD	2 Qtrs
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-7.35M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$423.00K	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$519.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$182.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$1.06M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$700.00K	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$363.00K	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-2.18M	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$218.00K	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$519.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-6.29M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.53M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-1.59M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-14.11M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.49M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.86M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-947.00K	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.02M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$995.00K	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-2.89M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$115.37M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.15M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$100.23M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$78.43M	USD	2 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$71.42M	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-583.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-413.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-212.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-296.00K	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-237.00K	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-42.00K	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-2.68M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$115.78M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$71.66M	USD	2 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$2.19M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$78.73M	USD	2 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$100.81M	USD	Annual

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