10-Q Filing

SOUTHWEST GAS HOLDINGS, INC. CIK: 1692115 Q1 2025

Filing Information

Form Type	10-Q
Accession Number	`0001692115-25-000119`
Period End Date	20250331
Filing Date	20250512
Fiscal Year	2025
Fiscal Period	Q1
XBRL Instance	swx-20250331_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 190 Income Statement 88 Cash Flow Statement 148 Stockholders Equity 50 Comprehensive Income 40

Balance Sheet 190 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, 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`	120.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.78M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.78M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.91M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.91M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.84B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.84B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.99B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.99B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.91B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.91B	USD	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.95B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.95B	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$178.65M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$178.65M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$176.49M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$176.49M	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$8.21B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$8.21B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$8.11B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$8.11B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.17B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.17B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.19B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.19B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$406.30M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$406.30M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$363.79M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$363.79M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$693.83M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$693.83M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$722.62M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$722.62M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$96.60M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$96.60M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$61.90M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$61.90M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$2.41M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$2.41M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$6.03M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$6.03M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$7.00M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$7.00M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$13.94M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$13.94M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$265.11M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$265.11M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$256.82M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$256.82M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.46B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.46B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.43B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.43B	USD	Point-in-time
Goodwill	`Goodwill`	$781.29M	USD	Point-in-time
Goodwill	`Goodwill`	$781.29M	USD	Point-in-time
Goodwill	`Goodwill`	$781.20M	USD	Point-in-time
Goodwill	`Goodwill`	$781.20M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$3.18M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$3.18M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	-	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	-	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$477.69M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$477.69M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$474.75M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$474.75M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.26B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.26B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.26B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.26B	USD	Point-in-time
Total assets	`Assets`	$12.02B	USD	Point-in-time
Total assets	`Assets`	$12.02B	USD	Point-in-time
Total assets	`Assets`	$12.08B	USD	Point-in-time
Total assets	`Assets`	$12.08B	USD	Point-in-time
Total assets	`Assets`	$11.89B	USD	Point-in-time
Total assets	`Assets`	$11.89B	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,910,713 and 71,782,756 shares)	`CommonStockValue`	$73.41M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,910,713 and 71,782,756 shares)	`CommonStockValue`	$73.41M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,910,713 and 71,782,756 shares)	`CommonStockValue`	$73.54M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,910,713 and 71,782,756 shares)	`CommonStockValue`	$73.54M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.73B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.73B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.72B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.72B	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-49.22M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-49.22M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-48.87M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-48.87M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$758.65M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$758.65M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$827.45M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$827.45M	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.50B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.50B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.58B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.58B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$177.24M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$177.24M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$172.56M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$172.56M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.66M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.66M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.67M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.67M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.35B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.35B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.33B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.33B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.04B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.04B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.09B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.09B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$30.02M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$30.02M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$28.93M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$28.93M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$690.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$690.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$680.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$680.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$331.81M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$331.81M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$253.32M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$253.32M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$63.88M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$63.88M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$66.33M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$66.33M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$1.48M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$1.48M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$5.49M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$5.49M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$59.35M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$59.35M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$86.75M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$86.75M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$39.43M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$39.43M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$40.41M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$40.41M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$242.26M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$242.26M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$289.19M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$289.19M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$347.07M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$347.07M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$382.90M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$382.90M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.81B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.81B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.83B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.83B	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$837.58M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$837.58M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$808.78M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$808.78M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$479.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$479.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$472.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$472.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$865.70M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$865.70M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$873.53M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$873.53M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.15B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.15B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.18B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.18B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$12.02B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$12.02B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$12.08B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$12.08B	USD	Point-in-time

Income Statement 88 line items

Line Item	Tag	Value	Unit	Period
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.05B	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.05B	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$746.42M	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$746.42M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$528.02M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$528.02M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$550.08M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$550.08M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.58B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.58B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.30B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.30B	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$630.00M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$630.00M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$284.58M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$284.58M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$135.15M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$135.15M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$131.25M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$131.25M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$127.91M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$127.91M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$119.14M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$119.14M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$22.90M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$22.90M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$23.76M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$23.76M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$515.64M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$515.64M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$528.57M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$528.57M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.42B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.42B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.10B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.10B	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$158.12M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$158.12M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$200.42M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$200.42M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$71.61M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$71.61M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$72.28M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$72.28M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$8.71M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$8.71M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$18.12M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$18.12M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-53.48M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-53.48M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-63.57M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-63.57M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$104.64M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$104.64M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$136.86M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$136.86M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$27.67M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$27.67M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$17.08M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$17.08M	USD	1 Quarter
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-175.00K	USD	1 Quarter
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-175.00K	USD	1 Quarter
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-4.68M	USD	1 Quarter
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-4.68M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$113.87M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$113.87M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$87.74M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$87.74M	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$1.22	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$1.22	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$1.58	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$1.58	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.22	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.22	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.58	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.58	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	72.01M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	72.01M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.73M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.73M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	72.14M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	72.14M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.88M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.88M	shares	1 Quarter

Cash Flow Statement 148 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$127.91M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$127.91M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$119.14M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$119.14M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-30.71M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-30.71M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-31.89M	USD	1 Quarter
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-31.89M	USD	1 Quarter
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$944.00K	USD	1 Quarter
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$944.00K	USD	1 Quarter
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$377.00K	USD	1 Quarter
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$377.00K	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$961.00K	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$961.00K	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.34M	USD	1 Quarter
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.34M	USD	1 Quarter
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.35M	USD	1 Quarter
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.35M	USD	1 Quarter
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.84M	USD	1 Quarter
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.84M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-27.65M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-27.65M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-26.11M	USD	1 Quarter
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-26.11M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-34.50M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-34.50M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-34.70M	USD	1 Quarter
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-34.70M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-354.20M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-354.20M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-53.87M	USD	1 Quarter
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-53.87M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-69.86M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-69.86M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-56.90M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-56.90M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$27.79M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$27.79M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$33.31M	USD	1 Quarter
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$33.31M	USD	1 Quarter
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$30.73M	USD	1 Quarter
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$30.73M	USD	1 Quarter
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$28.76M	USD	1 Quarter
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$28.76M	USD	1 Quarter
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$15.98M	USD	1 Quarter
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$15.98M	USD	1 Quarter
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$18.19M	USD	1 Quarter
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$18.19M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-20.51M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-20.51M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-25.40M	USD	1 Quarter
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-25.40M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$543.71M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$543.71M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$291.27M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$291.27M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$221.20M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$221.20M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$187.50M	USD	1 Quarter
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$187.50M	USD	1 Quarter
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$21.38M	USD	1 Quarter
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$21.38M	USD	1 Quarter
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	-	USD	1 Quarter
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	-	USD	1 Quarter
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-1.66M	USD	1 Quarter
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-1.66M	USD	1 Quarter
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-199.00K	USD	1 Quarter
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-199.00K	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.69M	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.69M	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.05M	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.05M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-199.79M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-199.79M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-186.65M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-186.65M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.37M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.37M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.29M	USD	1 Quarter
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.29M	USD	1 Quarter
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	1 Quarter
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	1 Quarter
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$37.00K	USD	1 Quarter
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$37.00K	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$44.39M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$44.39M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$44.53M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$44.53M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$55.90M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$55.90M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$39.76M	USD	1 Quarter
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$39.76M	USD	1 Quarter
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$63.42M	USD	1 Quarter
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$63.42M	USD	1 Quarter
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$16.49M	USD	1 Quarter
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$16.49M	USD	1 Quarter
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$10.00M	USD	1 Quarter
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$10.00M	USD	1 Quarter
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$15.50M	USD	1 Quarter
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$15.50M	USD	1 Quarter
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.97M	USD	1 Quarter
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.97M	USD	1 Quarter
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$3.54M	USD	1 Quarter
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$3.54M	USD	1 Quarter
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.69M	USD	1 Quarter
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.69M	USD	1 Quarter
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-3.19M	USD	1 Quarter
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-3.19M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$7.69M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$7.69M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-62.13M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-62.13M	USD	1 Quarter
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-197.00K	USD	1 Quarter
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-197.00K	USD	1 Quarter
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.00K	USD	1 Quarter
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.00K	USD	1 Quarter
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$351.42M	USD	1 Quarter
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$351.42M	USD	1 Quarter
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$42.51M	USD	1 Quarter
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$42.51M	USD	1 Quarter
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$363.79M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$363.79M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$457.95M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$457.95M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$406.30M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$406.30M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$106.54M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$106.54M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$363.79M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$363.79M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$457.95M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$457.95M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$406.30M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$406.30M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$106.54M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$106.54M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$65.28M	USD	1 Quarter
Interest paid, net of amounts capitalized	`InterestPaidNet`	$65.28M	USD	1 Quarter
Interest paid, net of amounts capitalized	`InterestPaidNet`	$69.97M	USD	1 Quarter
Interest paid, net of amounts capitalized	`InterestPaidNet`	$69.97M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$1.83M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$1.83M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$2.42M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$2.42M	USD	1 Quarter

Stockholders Equity 50 line items

Line Item	Tag	Value	Unit	Period
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.62	USD	1 Quarter
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.62	USD	1 Quarter
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.62	USD	1 Quarter
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.62	USD	1 Quarter
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time
Net income/Net loss attributable to noncontrolling interest holders	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$113.87M	USD	1 Quarter
Net income/Net loss attributable to noncontrolling interest holders	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$113.87M	USD	1 Quarter
Net income/Net loss attributable to noncontrolling interest holders	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$87.74M	USD	1 Quarter
Net income/Net loss attributable to noncontrolling interest holders	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$87.74M	USD	1 Quarter
Common stock issuances and Centuri IPO	`StockIssuedDuringPeriodValueNewIssues`	$5.54M	USD	1 Quarter
Common stock issuances and Centuri IPO	`StockIssuedDuringPeriodValueNewIssues`	$5.54M	USD	1 Quarter
Common stock issuances and Centuri IPO	`StockIssuedDuringPeriodValueNewIssues`	$1.61M	USD	1 Quarter
Common stock issuances and Centuri IPO	`StockIssuedDuringPeriodValueNewIssues`	$1.61M	USD	1 Quarter
Dividends declared	`DividendsCommonStock`	$44.70M	USD	1 Quarter
Dividends declared	`DividendsCommonStock`	$44.70M	USD	1 Quarter
Dividends declared	`DividendsCommonStock`	$45.07M	USD	1 Quarter
Dividends declared	`DividendsCommonStock`	$45.07M	USD	1 Quarter
Promissory notes in association with redeemable noncontrolling interest	`AdjustmentsToAdditionalPaidInCapitalPromissoryNotesInAssociationWithRedeemableNoncontrollingInterest`	$4.19M	USD	1 Quarter
Promissory notes in association with redeemable noncontrolling interest	`AdjustmentsToAdditionalPaidInCapitalPromissoryNotesInAssociationWithRedeemableNoncontrollingInterest`	$4.19M	USD	1 Quarter
Foreign currency exchange translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent`	$-2.82M	USD	1 Quarter
Foreign currency exchange translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent`	$-2.82M	USD	1 Quarter
Foreign currency exchange translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent`	$104.00K	USD	1 Quarter
Foreign currency exchange translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent`	$104.00K	USD	1 Quarter
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTaxOther`	$-384.00K	USD	1 Quarter
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTaxOther`	$-384.00K	USD	1 Quarter
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTaxOther`	$-268.00K	USD	1 Quarter
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTaxOther`	$-268.00K	USD	1 Quarter
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.91M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.78M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.36B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.68B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.75B	USD	Point-in-time

Comprehensive Income 40 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$87.56M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Net income	`ProfitLoss`	$109.19M	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$33.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$33.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$33.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$33.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-718.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-718.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.45M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.45M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$1.10M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$1.10M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$483.00K	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$483.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-384.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-384.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-268.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-268.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.82M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.82M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$104.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$104.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$372.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$372.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.44M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.44M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$85.13M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$85.13M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$109.56M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$109.56M	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-175.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-175.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.66M	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.66M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$85.30M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$85.30M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$114.22M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$114.22M	USD	1 Quarter

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