10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q1 2013

Filing Information

Form Type	10-Q
Accession Number	`0001193125-13-207509`
Period End Date	20130331
Filing Date	20130508
Fiscal Year	2013
Fiscal Period	Q1
XBRL Instance	swx-20130331.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 89 Income Statement 92 Cash Flow Statement 127 Stockholders Equity 49

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`	60.00M	shares	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.15M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.02B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.04B	USD	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.33M	shares	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.33M	shares	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.15M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.75B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.78B	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$911.00K	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$866.00K	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$74.18M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$84.48M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.35B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.34B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$242.10M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$243.87M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$218.06M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$108.38M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$33.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$25.53M	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`	$208.32M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$72.00M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$43.60M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$2.94M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$47.09M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$12.30M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$1.50M	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`	$71.42M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$458.42M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$370.23M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$441.78M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$443.75M	USD	Point-in-time
Total assets	`Assets`	$4.40B	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 - 46,325,592 and 46,147,788 shares)	`CommonStockValue`	$47.78M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 46,325,592 and 46,147,788 shares)	`CommonStockValue`	$47.96M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$832.59M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$828.78M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-49.58M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-50.74M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$549.66M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$484.37M	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.31B	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.38B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-1.78M	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`	$1.38B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.27B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.25B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.63B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.58B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$50.14M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$5.17M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$120.27M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$155.67M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$78.64M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$77.86M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	$1.73M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$53.77M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$37.64M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$17.53M	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`	$42.98M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$95.82M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$98.79M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$415.91M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$535.13M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$622.36M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$616.18M	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$485.00K	USD	Point-in-time
Taxes payable	`TaxesPayableNoncurrent`	$551.00K	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$262.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$256.00M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$503.32M	USD	Point-in-time
Other deferred credits	`OtherDeferredCreditsNoncurrent`	$474.09M	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`	$1.36B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.40B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$4.49B	USD	Point-in-time

Income Statement 92 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$493.60M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$530.71M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.28B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.38B	USD	Annual
Construction revenues	`ConstructionRevenue`	$126.93M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$599.02M	USD	Annual
Construction revenues	`ConstructionRevenue`	$119.91M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$536.17M	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.92B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$613.50M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$657.64M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.88B	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$200.61M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$572.43M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$242.75M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$437.46M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$371.22M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$97.09M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$363.40M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$95.85M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$54.16M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$228.19M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$205.77M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$58.93M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$42.79M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.73M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$11.79M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$41.81M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$106.69M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$119.53M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$528.68M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$474.62M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.66B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$475.11M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$523.02M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.61B	USD	Annual
Operating income	`OperatingIncomeLoss`	$275.30M	USD	Annual
Operating income	`OperatingIncomeLoss`	$134.62M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$258.37M	USD	Annual
Operating income	`OperatingIncomeLoss`	$138.39M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$15.88M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$68.80M	USD	Annual
Net interest deductions	`InterestExpense`	$17.16M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$66.74M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$3.05M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$294.00K	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$5.43M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$4.07M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-11.81M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-68.51M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-11.73M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-63.69M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$189.86M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$122.89M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$126.58M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$211.61M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$77.13M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$45.91M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$67.62M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$44.06M	USD	1 Quarter
Net income	`ProfitLoss`	$78.83M	USD	1 Quarter
Net income	`ProfitLoss`	$80.67M	USD	1 Quarter
Net income	`ProfitLoss`	$122.24M	USD	Annual
Net income	`ProfitLoss`	$134.48M	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-99.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-707.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-84.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-413.00K	USD	Annual
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$135.19M	USD	Annual
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$122.66M	USD	Annual
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$80.77M	USD	1 Quarter
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$78.92M	USD	1 Quarter
Basic earnings per share	`EarningsPerShareBasic`	$1.71	USD	1 Quarter
Basic earnings per share	`EarningsPerShareBasic`	$2.93	USD	Annual
Basic earnings per share	`EarningsPerShareBasic`	$2.67	USD	Annual
Basic earnings per share	`EarningsPerShareBasic`	$1.75	USD	1 Quarter
Diluted earnings per share	`EarningsPerShareDiluted`	$2.65	USD	Annual
Diluted earnings per share	`EarningsPerShareDiluted`	$2.90	USD	Annual
Diluted earnings per share	`EarningsPerShareDiluted`	$1.73	USD	1 Quarter
Diluted earnings per share	`EarningsPerShareDiluted`	$1.70	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.22	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.29	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.09	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.33	USD	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.25M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.16M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.07M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	45.93M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.36M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.47M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.60M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.65M	shares	1 Quarter

Cash Flow Statement 127 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$78.83M	USD	1 Quarter
Net income	`ProfitLoss`	$80.67M	USD	1 Quarter
Net income	`ProfitLoss`	$122.24M	USD	Annual
Net income	`ProfitLoss`	$134.48M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$205.77M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$58.93M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$228.19M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$54.16M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$66.98M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$82.06M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$40.24M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$39.54M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$41.70M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-2.42M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$11.40M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$1.49M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-28.40M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-100.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$2.20M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-26.60M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-5.61M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$15.12M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$34.23M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$51.44M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$10.82M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-37.93M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-7.84M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-56.09M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$20.73M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$21.89M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-15.89M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.04M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-36.41M	USD	1 Quarter
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$21.22M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-3.79M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-34.14M	USD	1 Quarter
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$834.00K	USD	1 Quarter
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$3.84M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$7.46M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$1.41M	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.38M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$2.66M	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.70M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$1.10M	USD	1 Quarter
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$471.00K	USD	1 Quarter
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.35M	USD	Annual
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$322.00K	USD	1 Quarter
AFUDC and property-related changes	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.09M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$11.17M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$-1.60M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$16.06M	USD	1 Quarter
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$11.86M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-18.24M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-62.94M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-255.00K	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-22.41M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$353.55M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$133.60M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$287.62M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$166.37M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$53.24M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$363.98M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$414.14M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$84.97M	USD	1 Quarter
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-37.78M	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-12.79M	USD	1 Quarter
Changes in customer advances	`ChangeInCustomerAdvances`	$4.43M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-13.44M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$-6.55M	USD	1 Quarter
Changes in customer advances	`ChangeInCustomerAdvances`	$906.00K	USD	1 Quarter
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$1.60M	USD	1 Quarter
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$2.26M	USD	1 Quarter
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$8.58M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$13.30M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$219.00K	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$2.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-381.44M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-50.73M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-348.25M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-76.47M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$732.00K	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$1.18M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$4.13M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.02M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$54.48M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$13.66M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$48.70M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$12.21M	USD	1 Quarter
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	1 Quarter
Interest rate swap settlement	`InterestRateSwapSettlement`	$21.75M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$325.88M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$475.48M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$4.66M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$168.30M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$69.50M	USD	1 Quarter
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$419.12M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$205.65M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$77.42M	USD	1 Quarter
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$113.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$-109.00M	USD	1 Quarter
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCredit`	$2.00M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$106.22M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$203.50M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-75.32M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-190.28M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$196.12M	USD	1 Quarter
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-184.98M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$7.55M	USD	1 Quarter
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$109.69M	USD	Annual
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$33.08M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$218.06M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$108.38M	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`	$21.94M	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`	$25.53M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$33.08M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$108.38M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$218.06M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$89.37M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$37.25M	USD	1 Quarter
Interest paid, net of amounts capitalized	`InterestPaidNet`	$63.34M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$13.15M	USD	1 Quarter
Income taxes paid (received)	`IncomeTaxesPaidNet`	$4.67M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$2.04M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-1.19M	USD	1 Quarter
Income taxes paid (received)	`IncomeTaxesPaidNet`	$634.00K	USD	1 Quarter

Stockholders Equity 49 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$78.83M	USD	1 Quarter
Net income	`ProfitLoss`	$80.67M	USD	1 Quarter
Net income	`ProfitLoss`	$122.24M	USD	Annual
Net income	`ProfitLoss`	$134.48M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$46.41M	USD	Annual
Net actuarial gain (loss)	`DefinedBenefitPlanActuarialNetGainsLossesNetOfTaxAmount`	$84.00M	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-537.00K	USD	Annual
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-134.00K	USD	1 Quarter
Amortization of transition obligation	`DefinedBenefitPlanAmortizationOfNetTransitionAssetObligationNetOfTaxAmount`	$-404.00K	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-11.21M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-3.97M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-17.20M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss`	$-5.30M	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$1.45M	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$-55.00K	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$3.63M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-64.28M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$4.70M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustment`	$-25.44M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-651.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.98M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$4.81M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-476.00K	USD	1 Quarter
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-9.72M	USD	Annual
Unrealized/realized gain (loss)	`OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$1.83M	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$181.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$725.00K	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$2.07M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax`	$518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-8.99M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.02M	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.49M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-16.97M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.74M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.17M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$105.27M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$81.84M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$81.33M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$131.74M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-84.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-99.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-707.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-413.00K	USD	Annual
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$81.94M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$81.41M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$105.68M	USD	Annual
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$132.45M	USD	Annual

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