10-Q Filing

SOUTHWEST GAS CORP CIK: 92416 Q3 2015

Filing Information

Form Type	10-Q
Accession Number	`0001193125-15-367430`
Period End Date	20150930
Filing Date	20151105
Fiscal Year	2015
Fiscal Period	Q3
XBRL Instance	swx-20150930.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`	47.38M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.73B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	46.52M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.97B	USD	Point-in-time
Common stock, outstanding	`CommonStockSharesOutstanding`	47.38M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.06B	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$415.00K	USD	Point-in-time
Acquisition adjustments, net	`PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1`	$550.00K	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$74.33M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$118.55M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.79B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$3.66B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$319.24M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$326.74M	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`	$32.96M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.85M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$39.16M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$39.57M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$41.08M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$269.06M	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`	$32.20M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$37.81M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$21.85M	USD	Point-in-time
Deferred income taxes, net	`DeferredTaxAssetsNetCurrent`	$291.00K	USD	Point-in-time
Deferred income taxes, net	`DeferredTaxAssetsNetCurrent`	$2.11M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$87.56M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$815.00K	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$105.44M	USD	Point-in-time
Prepaids and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$99.97M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$478.57M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$606.78M	USD	Point-in-time
Goodwill	`Goodwill`	$129.88M	USD	Point-in-time
Goodwill	`Goodwill`	$143.16M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	$1.69M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	-	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$478.62M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$460.91M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrent`	$621.78M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrent`	$592.48M	USD	Point-in-time
Total assets	`Assets`	$5.21B	USD	Point-in-time
Total assets	`Assets`	$5.18B	USD	Point-in-time
Common stock, $1 par (authorized-60,000,000 shares; issued and outstanding-47,375,398 and 46,523,184 shares)	`CommonStockValue`	$49.01M	USD	Point-in-time
Common stock, $1 par (authorized-60,000,000 shares; issued and outstanding-47,375,398 and 46,523,184 shares)	`CommonStockValue`	$48.15M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$851.38M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$894.62M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-48.01M	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`	$654.49M	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`	$-2.18M	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`	$13.70M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$1.54B	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`	$3.10B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$19.86M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$19.19M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$5.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	-	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$129.26M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.99M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$72.27M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$71.55M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	$13.64M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	-	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$44.34M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$42.25M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$21.73M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$16.47M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesGrossCurrent`	$7.03M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesGrossCurrent`	-	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$44.75M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$143.88M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$145.58M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$470.12M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$494.68M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$722.72M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$723.69M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$301.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$304.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$563.27M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$572.81M	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`	$5.18B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$5.21B	USD	Point-in-time

Income Statement 138 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.06B	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$984.00M	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.46B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.36B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$219.42M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$226.03M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$675.73M	USD	Annual
Construction revenues	`ConstructionRevenue`	$719.04M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$285.98M	USD	1 Quarter
Construction revenues	`ConstructionRevenue`	$510.02M	USD	3 Qtrs
Construction revenues	`ConstructionRevenue`	$948.64M	USD	Annual
Construction revenues	`ConstructionRevenue`	$206.45M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.41B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$432.48M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$505.40M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.49B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.78B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.03B	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$427.05M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$64.27M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$480.61M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$570.05M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$72.99M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$362.35M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$390.33M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$293.42M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$93.39M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$385.27M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$100.10M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$294.96M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$266.81M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$66.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$187.11M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$247.68M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$62.04M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$200.90M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$11.84M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$37.06M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$50.06M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$34.26M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$45.79M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$11.65M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$444.78M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$647.51M	USD	3 Qtrs
Construction expenses	`ConstructionAndDevelopmentCosts`	$850.59M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$595.09M	USD	Annual
Construction expenses	`ConstructionAndDevelopmentCosts`	$173.94M	USD	1 Quarter
Construction expenses	`ConstructionAndDevelopmentCosts`	$246.75M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$414.19M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.61B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.12B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.76B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$1.32B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$489.25M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$172.11M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$18.29M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$16.14M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$170.75M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$272.88M	USD	Annual
Operating income	`OperatingIncomeLoss`	$283.12M	USD	Annual
Net interest deductions	`InterestExpense`	$18.40M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$52.24M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$17.42M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$54.09M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$69.68M	USD	Annual
Net interest deductions	`InterestExpense`	$73.92M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$9.03M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$966.00K	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-1.23M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$4.92M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-3.66M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$440.00K	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-55.32M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-22.06M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-72.95M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-60.65M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-47.33M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-16.98M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$210.17M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$124.78M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$115.42M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.31M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$212.23M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-5.92M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.71M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$42.69M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-618.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$42.53M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$72.79M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$78.54M	USD	Annual
Net income (loss)	`ProfitLoss`	$72.73M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$131.63M	USD	Annual
Net income (loss)	`ProfitLoss`	$1.93M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$82.25M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$139.44M	USD	Annual
Net income (loss)	`ProfitLoss`	$-4.21M	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-43.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$685.00K	USD	Annual
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$524.00K	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$534.00K	USD	3 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-129.00K	USD	3 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$72.20M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$139.68M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$130.94M	USD	Annual
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$1.97M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$82.38M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Corporation	`NetIncomeLoss`	$-4.73M	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.77	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$1.54	USD	3 Qtrs
Basic earnings (loss) per share	`EarningsPerShareBasic`	$3.01	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$-0.10	USD	1 Quarter
Basic earnings (loss) per share	`EarningsPerShareBasic`	$2.80	USD	Annual
Basic earnings (loss) per share	`EarningsPerShareBasic`	$0.04	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.77	USD	Annual
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.53	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$1.76	USD	3 Qtrs
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$-0.10	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$0.04	USD	1 Quarter
Diluted earnings (loss) per share	`EarningsPerShareDiluted`	$2.98	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.22	USD	3 Qtrs
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.58	USD	Annual
Dividends declared per share	`CommonStockDividendsPerShareDeclared`	$1.09	USD	3 Qtrs
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`	$1.43	USD	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.45M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.78M	shares	Annual
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.48M	shares	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.51M	shares	1 Quarter
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	46.86M	shares	3 Qtrs
Average number of common shares outstanding	`WeightedAverageNumberOfSharesOutstandingBasic`	47.10M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.97M	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.93M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	46.90M	shares	Annual
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	47.26M	shares	3 Qtrs
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	0.00	shares	1 Quarter
Average shares outstanding (assuming dilution)	`WeightedAverageNumberOfDilutedSharesOutstanding`	47.19M	shares	Annual

Cash Flow Statement 154 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$131.63M	USD	Annual
Net income	`ProfitLoss`	$1.93M	USD	1 Quarter
Net income	`ProfitLoss`	$82.25M	USD	3 Qtrs
Net income	`ProfitLoss`	$139.44M	USD	Annual
Net income	`ProfitLoss`	$-4.21M	USD	1 Quarter
Net income	`ProfitLoss`	$72.73M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$266.81M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$187.11M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$66.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$200.90M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$247.68M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$62.04M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-62.62M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-5.96M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-37.69M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-32.58M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$29.19M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-6.57M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$31.79M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-34.68M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$700.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$200.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-41.70M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInOtherReceivables`	$-40.70M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-131.50M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-122.26M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$92.53M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$60.10M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$5.14M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-3.03M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-38.88M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-85.51M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-16.87M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-1.13M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-14.70M	USD	Annual
Accrued taxes	`IncreaseDecreaseInPropertyAndOtherTaxesPayable`	$-4.43M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-43.65M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$11.94M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-20.94M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-8.33M	USD	3 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$5.66M	USD	3 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$3.02M	USD	3 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$6.78M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$3.53M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.61M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.48M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$2.12M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.13M	USD	Annual
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.01M	USD	3 Qtrs
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.19M	USD	Annual
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.57M	USD	3 Qtrs
AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.44M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$16.68M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$14.42M	USD	3 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$18.73M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$17.42M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$18.34M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$28.57M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$5.35M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$2.78M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$339.57M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$412.40M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$261.90M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$496.92M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$440.19M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$293.28M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$403.12M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$336.57M	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$9.26M	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$199.76M	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	-	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-785.00K	USD	3 Qtrs
Restricted cash	`IncreaseDecreaseInRestrictedCash`	$-2.02M	USD	Annual
Restricted cash	`IncreaseDecreaseInRestrictedCash`	-	USD	3 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$21.54M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$13.12M	USD	3 Qtrs
Changes in customer advances	`ChangeInCustomerAdvances`	$15.69M	USD	Annual
Changes in customer advances	`ChangeInCustomerAdvances`	$14.30M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromMiscellaneousInvestingActivities`	$13.42M	USD	Annual
Miscellaneous inflows	`ProceedsFromMiscellaneousInvestingActivities`	$9.78M	USD	3 Qtrs
Miscellaneous inflows	`ProceedsFromMiscellaneousInvestingActivities`	$11.84M	USD	Annual
Miscellaneous inflows	`ProceedsFromMiscellaneousInvestingActivities`	$11.59M	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForMiscellaneousInvestingActivities`	-	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForMiscellaneousInvestingActivities`	$1.40M	USD	Annual
Miscellaneous outflows	`PaymentsForMiscellaneousInvestingActivities`	-	USD	3 Qtrs
Miscellaneous outflows	`PaymentsForMiscellaneousInvestingActivities`	-	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-604.37M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-375.58M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-270.37M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-319.15M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$35.42M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$608.00K	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$35.41M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$419.00K	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$55.06M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$49.30M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$72.04M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$64.59M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$123.82M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$285.34M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$355.32M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$37.72M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$28.27M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$21.53M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$143.32M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$260.95M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-53.00M	USD	3 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$47.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-100.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$40.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-5.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-33.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	3 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	-	USD	Annual
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$1.10M	USD	3 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	-	USD	3 Qtrs
Principal payments on capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$1.53M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-504.00K	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-759.00K	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.24M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$6.56M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-98.75M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$102.21M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$61.32M	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$-1.10M	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	-	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$-961.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	-	USD	3 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-6.21M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$25.31M	USD	Annual
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-1.91M	USD	3 Qtrs
Change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-6.61M	USD	3 Qtrs
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`	$13.85M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$39.16M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$32.96M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$32.96M	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`	$13.85M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashAndCashEquivalentsAtCarryingValue`	$39.16M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$60.26M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$68.17M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$42.70M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$45.31M	USD	3 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$16.74M	USD	Annual
Income taxes paid	`IncomeTaxesPaidNet`	$39.86M	USD	3 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$14.82M	USD	3 Qtrs
Income taxes paid	`IncomeTaxesPaidNet`	$49.28M	USD	Annual

Stockholders Equity 84 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$131.63M	USD	Annual
Net income (loss)	`ProfitLoss`	$1.93M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$82.25M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$139.44M	USD	Annual
Net income (loss)	`ProfitLoss`	$-4.21M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$72.73M	USD	3 Qtrs
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
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	1 Quarter
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$221.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$207.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$621.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$165.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$55.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$676.00K	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-16.30M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-5.33M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-19.65M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-3.67M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-11.00M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-15.99M	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$4.13M	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$14.48M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-82.14M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$9.63M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$3.21M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$72.18M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$4.83M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.53M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$9.32M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-512.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-6.56M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.12M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-708.00K	USD	1 Quarter
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`	$-519.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.56M	USD	3 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.07M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.55M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.07M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.55M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$519.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.56M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$518.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-510.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.23M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.57M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.11M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-9.48M	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`	$3.09M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$8.63M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$717.00K	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-3.49M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$85.34M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$122.15M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$148.07M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$74.84M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.96M	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$479.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-43.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-129.00K	USD	3 Qtrs
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$504.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$608.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$121.54M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$74.36M	USD	3 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$3.00M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$148.31M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$85.47M	USD	3 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Corporation	`ComprehensiveIncomeNetOfTax`	$-4.00M	USD	1 Quarter

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