10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q3 2012

Filing Information

Form Type	10-Q
Accession Number	`0001193125-12-456668`
Period End Date	20120930
Filing Date	20121107
Fiscal Year	2012
Fiscal Period	Q3
XBRL Instance	swx-20120930.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 89 Income Statement 136 Cash Flow Statement 137 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`	46.14B	shares	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	45.96B	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$4.93B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$4.81B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.73B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.14B	shares	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	45.96B	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.64B	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$955.00K	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$1.09M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$95.84M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$44.89M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.30B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.22B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$240.58M	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`	$19.84M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$19.85M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$22.08M	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`	$151.75M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$70.30M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$30.20M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$5.61M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$7.79M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$57.28M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$53.44M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$2.32M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$96.60M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$82.91M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$461.63M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$349.82M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$381.22M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$390.64M	USD	Point-in-time
Total assets	`Assets`	$4.27B	USD	Point-in-time
Total assets	`Assets`	$4.28B	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,140,788 and 45,956,088 shares)	`CommonStockValue`	$47.77M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,140,788 and 45,956,088 shares)	`CommonStockValue`	$47.59M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$827.59M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$821.64M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-49.33M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-44.85M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$435.75M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$406.12M	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.27B	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.23B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-989.00K	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-1.39M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.23B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.26B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.26B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$930.86M	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.52B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.16B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$5.11M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$322.62M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$90.57M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$186.75M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$83.84M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$78.08M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$42.10M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$39.18M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.70M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$18.10M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$72.43M	USD	Point-in-time
Deferred purchased gas costs	`RefundableGasCosts`	$122.95M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$111.16M	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`	$465.15M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$597.05M	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`	$621.00K	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$233.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$250.00M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$481.60M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$437.57M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.29B	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`	$4.27B	USD	Point-in-time

Income Statement 136 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$982.20M	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.40B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.02B	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$195.65M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$195.57M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.36B	USD	Annual
Construction revenues	`ConstructionRevenue`	$594.21M	USD	Annual
Construction revenues	`ConstructionRevenue`	$457.01M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$346.62M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$436.50M	USD	Annual
Construction revenues	`ConstructionRevenue`	$156.94M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$176.23M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$352.59M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.44B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.84B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$371.80M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.37B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.96B	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$622.91M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$53.28M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$468.03M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$387.98M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$533.45M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$67.17M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$89.09M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$368.11M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$278.36M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$268.75M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$90.63M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$363.30M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$148.62M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$196.64M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$56.72M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$218.27M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$166.42M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$50.34M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$41.26M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$30.75M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.59M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$31.07M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$40.23M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.60M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$134.16M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$419.07M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$154.27M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$537.53M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$380.24M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$305.24M	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$351.34M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.22B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$365.49M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.70B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.60B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.28B	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$6.31M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$148.16M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$258.24M	USD	Annual
Operating income	`OperatingIncomeLoss`	$1.25M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$156.31M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$234.33M	USD	Annual
Net interest deductions	`InterestExpense`	$51.82M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$52.62M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$16.41M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$68.80M	USD	Annual
Net interest deductions	`InterestExpense`	$71.85M	USD	Annual
Net interest deductions	`InterestExpense`	$17.31M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$5.98M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-6.81M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$4.57M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.64M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-4.00M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-8.09M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-47.25M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-59.44M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-14.77M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-75.86M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-62.83M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-25.39M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-8.46M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$109.07M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$158.47M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$88.72M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$195.41M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-24.14M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$38.53M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$56.90M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-8.39M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$69.73M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-4.05M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$32.10M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$125.68M	USD	Annual
Net income (loss)	`ProfitLoss`	$56.62M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$101.57M	USD	Annual
Net income (loss)	`ProfitLoss`	$-15.75M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-4.41M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$70.53M	USD	3 Qtrs
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`	$-106.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-378.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-343.00K	USD	3 Qtrs
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-109.00K	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-4.30M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$56.96M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$101.95M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$126.26M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-15.64M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$70.94M	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.24	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.34	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.54	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.09	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.23	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.74	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.72	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.09	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.52	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.23	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.21	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.34	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.29	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.80	USD	3 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.04	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.89	USD	3 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.15	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.27	USD	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.84M	shares	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.88M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.06M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.13M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.77M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.11M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.49M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.20M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.26M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.53M	shares	3 Qtrs

Cash Flow Statement 137 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$125.68M	USD	Annual
Net income	`ProfitLoss`	$56.62M	USD	3 Qtrs
Net income	`ProfitLoss`	$101.57M	USD	Annual
Net income	`ProfitLoss`	$-15.75M	USD	1 Quarter
Net income	`ProfitLoss`	$-4.41M	USD	1 Quarter
Net income	`ProfitLoss`	$70.53M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$148.62M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$56.72M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$196.64M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$50.34M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$218.27M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$166.42M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$33.34M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$62.32M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$58.66M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$27.49M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-57.50M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$32.17M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$34.86M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-28.03M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-40.10M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-33.10M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-300.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-1.10M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-29.30M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-52.85M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$29.34M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$58.87M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-11.85M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-65.94M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$28.94M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-93.61M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$13.40M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-938.00K	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$6.80M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$645.00K	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-14.92M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-14.83M	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`	$2.81M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$4.51M	USD	3 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$5.85M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$1.96M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.21M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.06M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.84M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.28M	USD	3 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$619.00K	USD	3 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.29M	USD	3 Qtrs
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$871.00K	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.82M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$9.24M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$-210.00K	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$12.73M	USD	3 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$-7.53M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-2.35M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-15.97M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$8.29M	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`	$299.50M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$338.02M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$244.33M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$275.97M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$327.65M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$393.33M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$263.63M	USD	3 Qtrs
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-37.78M	USD	Annual
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$4.00K	USD	Annual
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$2.00K	USD	3 Qtrs
Change in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-12.79M	USD	3 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$-4.76M	USD	3 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$-5.91M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-24.22M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-21.21M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$8.77M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$5.57M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$12.65M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$3.80M	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.00M	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.72M	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.72M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-267.31M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-369.12M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-277.63M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-330.71M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$4.73M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$8.35M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$4.13M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.46M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$39.43M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$35.76M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$51.60M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$47.15M	USD	Annual
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	Annual
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	3 Qtrs
Interest rate swap settlement	`InterestRateSwapSettlement`	$11.69M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$515.42M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$336.77M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$212.81M	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$453.64M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$275.06M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$377.46M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$432.87M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$275.09M	USD	Annual
Change in credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$20.00M	USD	Annual
Change in credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$20.00M	USD	Annual
Change in credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-69.00M	USD	3 Qtrs
Change in credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$20.00M	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`	$-73.28M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$31.19M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$2.24M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-96.26M	USD	3 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$142.00K	USD	3 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-18.00K	USD	Annual
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$19.84M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$19.85M	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`	$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`	$19.85M	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`	$21.94M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$116.10M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$50.81M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$80.36M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$89.56M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$70.52M	USD	3 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-13.02M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$1.97M	USD	3 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-13.71M	USD	3 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$2.05M	USD	Annual

Comprehensive Income 73 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$125.68M	USD	Annual
Net income (loss)	`ProfitLoss`	$56.62M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$101.57M	USD	Annual
Net income (loss)	`ProfitLoss`	$-15.75M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-4.41M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$70.53M	USD	3 Qtrs
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$5.62M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$84.00M	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-403.00K	USD	3 Qtrs
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-403.00K	USD	3 Qtrs
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-135.00K	USD	1 Quarter
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-537.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-537.00K	USD	Annual
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`	$-11.90M	USD	3 Qtrs
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$-2.41M	USD	1 Quarter
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$-14.32M	USD	Annual
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$-7.24M	USD	3 Qtrs
Amortization of net loss	`DefinedBenefitPlanAmortizationOfNetGainsLossesNetOfTaxAmount`	$-9.12M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$6.68M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$2.23M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$1.26M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$10.88M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$3.62M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-61.48M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-476.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.43M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.67M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-960.00K	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-320.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.78M	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-10.16M	USD	3 Qtrs
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$857.00K	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-8.21M	USD	1 Quarter
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-1.42M	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$1.83M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$604.00K	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$518.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$1.22M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$544.00K	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$1.40M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$181.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.26M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-8.03M	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-9.61M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$3.05M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-814.00K	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-5.41M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$4.48M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-7.71M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-8.65M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.96M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$994.00K	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$120.26M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$47.97M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-23.45M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$103.53M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-3.42M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$75.01M	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-378.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-405.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-586.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-109.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-343.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-106.00K	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$103.91M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-3.31M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-23.35M	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`	$120.85M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$48.31M	USD	3 Qtrs

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