10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q2 2015

Filing Information

Form Type	10-Q
Accession Number	`0001193125-15-280092`
Period End Date	20150630
Filing Date	20150806
Fiscal Year	2015
Fiscal Period	Q2
XBRL Instance	swx-20150630.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 103 Income Statement 138 Cash Flow Statement 154 Stockholders Equity 84

Balance Sheet 103 line items

Line Item	Tag	Value	Unit	Period
Common stock, par	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.56B	USD	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	46.52M	shares	Point-in-time
Common stock, issued	`CommonStockSharesIssued`	47.04M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.68B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.97B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	47.04M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.03B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.52M	shares	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$550.00K	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$460.00K	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$79.91M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$74.33M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.66B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.73B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$326.74M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$325.45M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$821.00K	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	-	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$17.72M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$41.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$26.89M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$48.91M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$39.57M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$273.45M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$281.82M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$73.90M	USD	Point-in-time
Accrued utility revenue	`OtherReceivables`	$31.80M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$14.00M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$21.85M	USD	Point-in-time
Deferred income taxes, net	`DeferredTaxAssetsNetCurrent`	$2.11M	USD	Point-in-time
Deferred income taxes, net	`DeferredTaxAssetsNetCurrent`	$10.49M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$3.75M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$87.56M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$99.97M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$98.44M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$480.84M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$606.78M	USD	Point-in-time
Goodwill	`Goodwill`	$138.26M	USD	Point-in-time
Goodwill	`Goodwill`	$143.16M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	-	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	$1.47M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$468.38M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$478.62M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrent`	$621.78M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrent`	$608.11M	USD	Point-in-time
Total assets	`Assets`	$5.15B	USD	Point-in-time
Total assets	`Assets`	$5.21B	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 47,042,327 and 46,523,184 shares)	`CommonStockValue`	$48.15M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 47,042,327 and 46,523,184 shares)	`CommonStockValue`	$48.67M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$873.62M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$851.38M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-48.75M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-50.17M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$639.16M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$678.29M	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.55B	USD	Point-in-time
Total Southwest Gas Corporation equity	`StockholdersEquity`	$1.49B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-2.26M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-2.20M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.49B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.55B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$20.04M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$19.30M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.52B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.64B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$3.14B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$3.09B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$19.19M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$20.05M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	-	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$5.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$130.36M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.99M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$72.74M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$71.55M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	-	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	$4.27M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$39.78M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$44.34M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.16M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.47M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesGrossCurrent`	$16.38M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesGrossCurrent`	-	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$27.22M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$145.58M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$139.22M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$470.12M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$466.19M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$721.35M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$723.69M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$304.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$302.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$572.81M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$566.70M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.60B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.59B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$5.21B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$5.15B	USD	Point-in-time

Income Statement 138 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$757.97M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$839.76M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.46B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$271.48M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.33B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$286.64M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$251.96M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$869.11M	USD	Annual
Construction revenues	`ConstructionRevenue`	$181.67M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$303.58M	USD	2 Qtrs
Construction revenues	`ConstructionRevenue`	$433.07M	USD	2 Qtrs
Construction revenues	`ConstructionRevenue`	$661.60M	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$453.15M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$538.60M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.06B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.27B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.33B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.99B	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$97.98M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$109.02M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$289.36M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$362.78M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$578.77M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$455.37M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$194.85M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$378.56M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$200.03M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$99.34M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$97.62M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$392.92M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$62.19M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$125.08M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$134.42M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$262.37M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$66.95M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$244.39M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$22.42M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$45.10M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$12.41M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$25.41M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$50.24M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$10.96M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$157.64M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$588.74M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$225.83M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$777.77M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$270.84M	USD	2 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$400.76M	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.05B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$907.73M	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$513.56M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.73B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.12B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$426.40M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$285.27M	USD	Annual
Operating income	`OperatingIncomeLoss`	$26.75M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$153.82M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$154.60M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$260.73M	USD	Annual
Operating income	`OperatingIncomeLoss`	$25.05M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$17.72M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$72.94M	USD	Annual
Net interest deductions	`InterestExpense`	$67.36M	USD	Annual
Net interest deductions	`InterestExpense`	$17.30M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$34.82M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$35.69M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$4.47M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$2.43M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$11.25M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$162.00K	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$5.07M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$2.86M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-56.10M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-17.55M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-67.87M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-14.44M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-30.35M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-33.26M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$204.63M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$12.31M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$123.47M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$217.39M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$7.49M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$121.34M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$44.40M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$70.17M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$2.43M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$43.15M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$2.69M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$79.63M	USD	Annual
Net income	`ProfitLoss`	$137.77M	USD	Annual
Net income	`ProfitLoss`	$134.46M	USD	Annual
Net income	`ProfitLoss`	$9.63M	USD	1 Quarter
Net income	`ProfitLoss`	$80.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$5.06M	USD	1 Quarter
Net income	`ProfitLoss`	$76.94M	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$114.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-86.00K	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-393.00K	USD	Annual
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$10.00K	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$118.00K	USD	Annual
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$80.41M	USD	2 Qtrs
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$76.93M	USD	2 Qtrs
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$134.85M	USD	Annual
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$9.63M	USD	1 Quarter
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$4.95M	USD	1 Quarter
Net income attributable to Southwest Gas Corporation	`NetIncomeLoss`	$137.65M	USD	Annual
Basic earnings per share	`EarningsPerShareBasic`	$1.65	USD	2 Qtrs
Basic earnings per share	`EarningsPerShareBasic`	$2.91	USD	Annual
Basic earnings per share	`EarningsPerShareBasic`	$2.95	USD	Annual
Basic earnings per share	`EarningsPerShareBasic`	$1.73	USD	2 Qtrs
Basic earnings per share	`EarningsPerShareBasic`	$0.11	USD	1 Quarter
Basic earnings per share	`EarningsPerShareBasic`	$0.21	USD	1 Quarter
Diluted earnings per share	`EarningsPerShareDiluted`	$0.10	USD	1 Quarter
Diluted earnings per share	`EarningsPerShareDiluted`	$2.92	USD	Annual
Diluted earnings per share	`EarningsPerShareDiluted`	$1.71	USD	2 Qtrs
Diluted earnings per share	`EarningsPerShareDiluted`	$2.88	USD	Annual
Diluted earnings per share	`EarningsPerShareDiluted`	$1.63	USD	2 Qtrs
Diluted earnings per share	`EarningsPerShareDiluted`	$0.21	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.41	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.36	USD	1 Quarter
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.81	USD	2 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$0.73	USD	2 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.39	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.54	USD	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.50M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.74M	shares	2 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.41M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.63M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.47M	shares	2 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.87M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	47.16M	shares	2 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.86M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.91M	shares	2 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	47.07M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.95M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	47.29M	shares	1 Quarter

Cash Flow Statement 154 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$134.46M	USD	Annual
Net income	`ProfitLoss`	$9.63M	USD	1 Quarter
Net income	`ProfitLoss`	$80.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$5.06M	USD	1 Quarter
Net income	`ProfitLoss`	$76.94M	USD	2 Qtrs
Net income	`ProfitLoss`	$137.77M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$62.19M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$134.42M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$125.08M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$244.39M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$262.37M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$66.95M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-47.35M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-43.71M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-3.90M	USD	2 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-24.49M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$23.21M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$33.66M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-6.02M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-36.00M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$200.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-42.10M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$1.20M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-41.10M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$108.99M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-103.91M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$62.22M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-111.02M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-38.47M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$11.70M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-91.67M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-10.08M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-4.80M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.42M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.16M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$7.61M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$17.70M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-5.16M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-46.24M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-27.23M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$5.96M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$4.14M	USD	2 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$4.60M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$2.56M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$3.77M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.87M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$1.51M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.72M	USD	Annual
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.13M	USD	2 Qtrs
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.30M	USD	Annual
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.10M	USD	Annual
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.02M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$15.15M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$15.24M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$20.48M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$21.82M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-729.00K	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$19.46M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$41.77M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$2.95M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$328.44M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$483.21M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$334.24M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$197.45M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$203.64M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$387.84M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$175.44M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$425.09M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$199.76M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$9.26M	USD	2 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-785.00K	USD	2 Qtrs
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-18.67M	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$16.65M	USD	2 Qtrs
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$16.65M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$8.95M	USD	2 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$13.59M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$9.69M	USD	2 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$21.11M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$9.44M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$7.06M	USD	2 Qtrs
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$10.62M	USD	Annual
Miscellaneous inflows	`ProceedsFromOtherInvestingActivities`	$4.89M	USD	2 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	$1.40M	USD	Annual
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	-	USD	2 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	-	USD	2 Qtrs
Miscellaneous outflows	`PaymentsForOtherInvestingActivities`	-	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-197.53M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-577.04M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-380.28M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-176.09M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$515.00K	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$20.71M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$20.88M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$237.00K	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$32.32M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$36.00M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$62.90M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$69.96M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$17.72M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$93.17M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$344.67M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$287.34M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$78.41M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$206.85M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$46.46M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$10.72M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-10.00M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$30.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-120.00M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-119.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	2 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-5.00M	USD	2 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$722.00K	USD	2 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	-	USD	2 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	-	USD	Annual
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$1.16M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.53M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-472.00K	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.32M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-534.00K	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$61.01M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-126.79M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$116.27M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-35.55M	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	-	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$-428.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	-	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$-570.00K	USD	2 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-14.19M	USD	2 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$22.02M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$9.34M	USD	2 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$9.17M	USD	Annual
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$48.91M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$39.57M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$41.08M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$26.89M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$17.72M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$17.72M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$48.91M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$39.57M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$41.08M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$26.89M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$67.98M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$61.40M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$34.21M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$31.79M	USD	2 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$15.56M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$28.48M	USD	2 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$40.48M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$12.25M	USD	2 Qtrs

Stockholders Equity 84 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$134.46M	USD	Annual
Net income	`ProfitLoss`	$9.63M	USD	1 Quarter
Net income	`ProfitLoss`	$80.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$5.06M	USD	1 Quarter
Net income	`ProfitLoss`	$76.94M	USD	2 Qtrs
Net income	`ProfitLoss`	$137.77M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-107.66M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$62.21M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$524.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$110.00K	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$55.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$208.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$414.00K	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$221.00K	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-10.66M	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-17.99M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-17.93M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-5.33M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-3.67M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-7.33M	USD	2 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$4.13M	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$3.21M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$6.42M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$4.83M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-83.75M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$9.66M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$73.67M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.02M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-6.70M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.42M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-511.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-708.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$9.52M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.07M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-518.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.07M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.04M	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-519.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.04M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.04M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$519.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.04M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.06M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$209.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.72M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.03M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.06M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.44M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-9.17M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.39M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$8.77M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$82.38M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$6.50M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$10.66M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$143.22M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$78.33M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$128.60M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-393.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$61.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$122.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-25.00K	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-86.00K	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$78.36M	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$6.38M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$10.66M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$143.62M	USD	Annual
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$128.54M	USD	Annual
Comprehensive income attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$82.47M	USD	2 Qtrs

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