10-Q Filing

SOUTHWEST GAS HOLDINGS, INC. CIK: 1692115 Q2 2019

Filing Information

Form Type	10-Q
Accession Number	`0001692115-19-000062`
Period End Date	20190630
Filing Date	20190807
Fiscal Year	2019
Fiscal Period	Q2
XBRL Instance	swx630201910q_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 92 Income Statement 132 Cash Flow Statement 154 Stockholders Equity 20 Comprehensive Income 78

Balance Sheet 92 line items

Line Item	Tag	Value	Unit	Period
Common stock, par (in USD per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par (in USD per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	53.03M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	53.03M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	54.32M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$7.13B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$7.40B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.23B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.28B	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$193.03M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$248.27M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$5.37B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$5.09B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$761.65M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$623.55M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$38.45M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$85.36M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$417.64M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$413.93M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$77.20M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$34.90M	USD	Point-in-time
Income taxes receivable	`IncomeTaxesReceivable`	$14.65M	USD	Point-in-time
Income taxes receivable	`IncomeTaxesReceivable`	$15.19M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$58.24M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$4.93M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$243.70M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$187.67M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$752.08M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$839.77M	USD	Point-in-time
Goodwill	`Goodwill`	$345.87M	USD	Point-in-time
Goodwill	`Goodwill`	$359.05M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$1.02M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$1.26M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$440.86M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$436.04M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$782.93M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$801.17M	USD	Point-in-time
Total assets	`Assets`	$7.36B	USD	Point-in-time
Total assets	`Assets`	$7.67B	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 54,321,217 and 53,026,848 shares)	`CommonStockValue`	$54.66M	USD	Point-in-time
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 54,321,217 and 53,026,848 shares)	`CommonStockValue`	$55.95M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.31B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.41B	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-48.58M	USD	Point-in-time
Accumulated other comprehensive income (loss), net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-52.67M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$944.28M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.00B	USD	Point-in-time
Total Southwest Gas Holdings, Inc. equity	`StockholdersEquity`	$2.25B	USD	Point-in-time
Total Southwest Gas Holdings, Inc. equity	`StockholdersEquity`	$2.42B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-452.00K	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	-	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.93B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.25B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$83.18M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$81.83M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$2.11B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$2.37B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$4.44B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$4.88B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$33.06M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$36.81M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	-	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$152.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$196.91M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$248.99M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$69.17M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$67.94M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	$1.08M	USD	Point-in-time
Income taxes payable	`TaxesPayableCurrent`	-	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$43.56M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$42.78M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$21.43M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$21.37M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$79.76M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$89.73M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$290.88M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$269.67M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$938.64M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$726.50M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$529.20M	USD	Point-in-time
Deferred income taxes and investment tax credits	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$563.48M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$389.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$383.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$1.11B	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$1.07B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$1.98B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.06B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$7.36B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$7.67B	USD	Point-in-time

Income Statement 132 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.35B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$779.39M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$258.71M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$275.68M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.37B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$769.99M	USD	2 Qtrs
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$767.16M	USD	2 Qtrs
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$395.20M	USD	1 Quarter
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$454.30M	USD	1 Quarter
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$1.41B	USD	Annual
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$655.22M	USD	2 Qtrs
Utility infrastructure services revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$1.63B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.55B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$670.88M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$713.01M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.00B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.76B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.43B	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$407.94M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$83.47M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$269.20M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$407.98M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$257.79M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$65.18M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$398.05M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$211.54M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$207.79M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$410.14M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$105.29M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$105.44M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$273.31M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$244.18M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$147.88M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$70.34M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$123.78M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$61.31M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$14.67M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$61.31M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$31.33M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$58.59M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$29.92M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$15.13M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$611.62M	USD	2 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$402.20M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$702.66M	USD	2 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$352.67M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.48B	USD	Annual
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.30B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$658.14M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.24B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.63B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$617.54M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.35B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.41B	USD	Annual
Operating income	`OperatingIncomeLoss`	$195.35M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$54.87M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$53.34M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$369.88M	USD	Annual
Operating income	`OperatingIncomeLoss`	$353.41M	USD	Annual
Operating income	`OperatingIncomeLoss`	$182.90M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$46.28M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$23.65M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$53.23M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$26.83M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$86.98M	USD	Annual
Net interest deductions	`InterestExpense`	$103.62M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-9.27M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-2.40M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.15M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$7.99M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-7.04M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-2.71M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-96.25M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-25.68M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-26.36M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-53.32M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-45.24M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-106.02M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$263.87M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$26.98M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$129.57M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$257.16M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$150.11M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$29.18M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$63.84M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$50.50M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$29.73M	USD	2 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$6.35M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$31.89M	USD	2 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$5.43M	USD	1 Quarter
Net income	`ProfitLoss`	$118.22M	USD	2 Qtrs
Net income	`ProfitLoss`	$200.02M	USD	Annual
Net income	`ProfitLoss`	$99.84M	USD	2 Qtrs
Net income	`ProfitLoss`	$22.83M	USD	1 Quarter
Net income	`ProfitLoss`	$21.55M	USD	1 Quarter
Net income	`ProfitLoss`	$206.66M	USD	Annual
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-650.00K	USD	Annual
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.52M	USD	Annual
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-797.00K	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.35M	USD	2 Qtrs
Net income (loss) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$776.00K	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$21.55M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$100.64M	USD	2 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$116.86M	USD	2 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$198.50M	USD	Annual
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$207.31M	USD	Annual
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$22.06M	USD	1 Quarter
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$2.18	USD	2 Qtrs
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$3.82	USD	Annual
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$0.44	USD	1 Quarter
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$0.41	USD	1 Quarter
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$4.29	USD	Annual
Basic earnings per share (in USD per share)	`EarningsPerShareBasic`	$2.07	USD	2 Qtrs
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$3.82	USD	Annual
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$2.07	USD	2 Qtrs
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$4.28	USD	Annual
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$2.18	USD	2 Qtrs
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$0.44	USD	1 Quarter
Diluted earnings per share (in USD per share)	`EarningsPerShareDiluted`	$0.41	USD	1 Quarter
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	51.91M	shares	Annual
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.65M	shares	2 Qtrs
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	48.83M	shares	1 Quarter
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	48.62M	shares	2 Qtrs
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	48.34M	shares	Annual
Average number of common shares (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.94M	shares	1 Quarter
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	53.72M	shares	2 Qtrs
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	51.98M	shares	Annual
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	48.67M	shares	2 Qtrs
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	48.39M	shares	Annual
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	54.00M	shares	1 Quarter
Average shares (assuming dilution) (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	48.88M	shares	1 Quarter

Cash Flow Statement 154 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$118.22M	USD	2 Qtrs
Net income	`ProfitLoss`	$200.02M	USD	Annual
Net income	`ProfitLoss`	$99.84M	USD	2 Qtrs
Net income	`ProfitLoss`	$22.83M	USD	1 Quarter
Net income	`ProfitLoss`	$21.55M	USD	1 Quarter
Net income	`ProfitLoss`	$206.66M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$273.31M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$244.18M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$147.88M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$70.34M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$123.78M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$61.31M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-49.55M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-33.32M	USD	2 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-48.87M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-31.83M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$12.70M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$57.20M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$5.77M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$2.61M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInUnbilledReceivables`	$700.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInUnbilledReceivables`	$-44.00M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInUnbilledReceivables`	$600.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInUnbilledReceivables`	$-42.30M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-11.69M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-34.10M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$43.34M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-5.13M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-48.16M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-44.47M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$25.94M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$8.09M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-17.35M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-2.27M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-9.14M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$3.12M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$16.81M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-54.99M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$45.40M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-17.72M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$3.02M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$250.00K	USD	2 Qtrs
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$2.28M	USD	Annual
Gains on sale	`GainLossOnSaleOfPropertyPlantEquipment`	$831.00K	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$7.51M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.46M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.70M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$3.30M	USD	2 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$586.00K	USD	2 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.97M	USD	2 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$5.01M	USD	Annual
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.77M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$15.87M	USD	2 Qtrs
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$16.49M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$15.87M	USD	Annual
Changes in other assets and deferred charges	`IncreaseDecreaseInOtherOperatingAssets`	$5.12M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$5.95M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$7.98M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$26.04M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-6.45M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$278.42M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$418.79M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$560.25M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$247.02M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$898.48M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$471.58M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$339.01M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$700.43M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$98.41M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$4.21M	USD	2 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$19.53M	USD	2 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$266.70M	USD	Annual
Changes in customer advances	`IncreaseDecreaseInCustomerAdvances`	$9.48M	USD	2 Qtrs
Changes in customer advances	`IncreaseDecreaseInCustomerAdvances`	$14.79M	USD	Annual
Changes in customer advances	`IncreaseDecreaseInCustomerAdvances`	$8.16M	USD	2 Qtrs
Changes in customer advances	`IncreaseDecreaseInCustomerAdvances`	$9.91M	USD	Annual
Miscellaneous inflows	`PaymentsForProceedsFromOtherInvestingActivities`	$-2.94M	USD	Annual
Miscellaneous inflows	`PaymentsForProceedsFromOtherInvestingActivities`	$-2.56M	USD	2 Qtrs
Miscellaneous inflows	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.16M	USD	2 Qtrs
Miscellaneous inflows	`PaymentsForProceedsFromOtherInvestingActivities`	$-12.30M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.15B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-776.62M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-332.50M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-480.47M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$110.39M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$69.14M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$102.74M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$388.01M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$56.74M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$107.99M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$48.98M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$96.17M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$421.59M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$531.37M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$455.40M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$781.88M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$379.70M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$190.59M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$100.78M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$53.60M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-44.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-102.00M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-104.00M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-2.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-22.50M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$20.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-192.00M	USD	2 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-152.00M	USD	2 Qtrs
Principal payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$439.00K	USD	Annual
Principal payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$316.00K	USD	2 Qtrs
Principal payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$107.00K	USD	2 Qtrs
Principal payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$723.00K	USD	Annual
Redemption of Centuri shares from noncontrolling parties	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	2 Qtrs
Redemption of Centuri shares from noncontrolling parties	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$23.00M	USD	Annual
Redemption of Centuri shares from noncontrolling parties	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	2 Qtrs
Redemption of Centuri shares from noncontrolling parties	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.86M	USD	2 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.91M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.11M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.85M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-966.00K	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-898.00K	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.81M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.94M	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$155.07M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$362.83M	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$590.93M	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$76.71M	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$72.00K	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-124.00K	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-12.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$34.00K	USD	Annual
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-8.89M	USD	2 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$3.72M	USD	Annual
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-46.91M	USD	2 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$5.03M	USD	Annual
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$38.45M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$43.62M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$85.36M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$29.70M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$34.73M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$38.45M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$43.62M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$85.36M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$29.70M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$34.73M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$96.48M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$40.08M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$50.00M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$76.84M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$1.83M	USD	2 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$16.51M	USD	2 Qtrs
Income taxes paid (received)	`IncomeTaxesPaidNet`	$19.14M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$-13.45M	USD	Annual

Stockholders Equity 20 line items

Line Item	Tag	Value	Unit	Period
Beginning balance (in shares)	`CommonStockSharesOutstanding`	53.03M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	54.32M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.93B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.25B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.27M	USD	2 Qtrs
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-636.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.27M	USD	2 Qtrs
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-636.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.54M	USD	Annual
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.31M	USD	Annual
Ending balance (in shares)	`CommonStockSharesOutstanding`	53.03M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	54.32M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.93B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.25B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.42B	USD	Point-in-time
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.55	USD	1 Quarter
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.52	USD	1 Quarter
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.09	USD	2 Qtrs
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.04	USD	2 Qtrs

Comprehensive Income 78 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$118.22M	USD	2 Qtrs
Net income	`ProfitLoss`	$200.02M	USD	Annual
Net income	`ProfitLoss`	$99.84M	USD	2 Qtrs
Net income	`ProfitLoss`	$22.83M	USD	1 Quarter
Net income	`ProfitLoss`	$21.55M	USD	1 Quarter
Net income	`ProfitLoss`	$206.66M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-15.52M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-32.70M	USD	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$242.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$990.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$922.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$483.00K	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$254.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$508.00K	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-6.39M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-12.77M	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-4.44M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-20.66M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-8.88M	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-21.66M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$5.74M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-8.21M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$4.06M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$8.13M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$2.90M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$11.49M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.79M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-4.23M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.24M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$2.90M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-897.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-619.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.27M	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-636.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-1.27M	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-636.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.54M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.31M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.27M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$1.27M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.54M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$636.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.31M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$636.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-679.00K	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.58M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-690.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.60M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$787.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$169.00K	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.28M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.04M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.46M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$4.09M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$6.94M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$843.00K	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$206.96M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$122.30M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$22.39M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$24.87M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$205.38M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$101.31M	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$776.00K	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.52M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-668.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.35M	USD	2 Qtrs
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-797.00K	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$206.05M	USD	Annual
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$205.44M	USD	Annual
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$120.95M	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$24.10M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$102.10M	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$22.39M	USD	1 Quarter

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