10-Q Filing

SOUTHWEST GAS HOLDINGS, INC. CIK: 1692115 Q3 2024

Filing Information

Form Type	10-Q
Accession Number	`0001692115-24-000114`
Period End Date	20240930
Filing Date	20241106
Fiscal Year	2024
Fiscal Period	Q3
XBRL Instance	swx-20240930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 190 Income Statement 184 Cash Flow Statement 180 Stockholders Equity 30 Comprehensive Income 80

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
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.65B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.65B	USD	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.74M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.74M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.14B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantandEquipmentGasPlant`	$10.14B	USD	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.56M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	71.56M	shares	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.82B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.82B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.94B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.94B	USD	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$200.55M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$200.55M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$243.38M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$243.38M	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.52B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.52B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.96B	USD	Point-in-time
Net regulated operations plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$7.96B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.27B	USD	Point-in-time
Other property and investments, net	`OtherPropertyAndInvestments`	$1.27B	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`	$456.64M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$456.64M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$106.54M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$106.54M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$673.22M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$673.22M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$886.55M	USD	Point-in-time
Accounts receivable, net of allowance	`AccountsReceivableNetCurrent`	$886.55M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$93.00M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$93.00M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$47.80M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$47.80M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$1.94M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$1.94M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$7.40M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$7.40M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$9.27M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$9.27M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$552.88M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$552.88M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$218.83M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$218.83M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$261.06M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$261.06M	USD	Point-in-time
Current assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Current assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Current assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$21.38M	USD	Point-in-time
Current assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$21.38M	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`	$1.88B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.88B	USD	Point-in-time
Goodwill	`Goodwill`	$787.60M	USD	Point-in-time
Goodwill	`Goodwill`	$787.60M	USD	Point-in-time
Goodwill	`Goodwill`	$789.73M	USD	Point-in-time
Goodwill	`Goodwill`	$789.73M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$2.83M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$2.83M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$463.00K	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$463.00K	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$477.90M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$477.90M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$414.01M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$414.01M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.27B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.27B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.20B	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.20B	USD	Point-in-time
Total assets	`Assets`	$11.87B	USD	Point-in-time
Total assets	`Assets`	$11.87B	USD	Point-in-time
Total assets	`Assets`	$11.87B	USD	Point-in-time
Total assets	`Assets`	$11.87B	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,740,332 and 71,563,750 shares)	`CommonStockValue`	$73.19M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,740,332 and 71,563,750 shares)	`CommonStockValue`	$73.19M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,740,332 and 71,563,750 shares)	`CommonStockValue`	$73.37M	USD	Point-in-time
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 71,740,332 and 71,563,750 shares)	`CommonStockValue`	$73.37M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.54B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.54B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.71B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.71B	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.79M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.79M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.88M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.88M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$710.94M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$710.94M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$738.84M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$738.84M	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.46B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.46B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.31B	USD	Point-in-time
Total equity	`StockholdersEquity`	$3.31B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	-	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	-	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$176.86M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$176.86M	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`	$3.24B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$104.67M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$104.67M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.71M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$7.71M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.61B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.61B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.38B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$4.38B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.02B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.02B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.02B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$8.02B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$42.55M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$42.55M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$30.26M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$30.26M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$663.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$663.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$628.50M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$628.50M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$226.96M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$226.96M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$346.91M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$346.91M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$60.75M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$60.75M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$48.46M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$48.46M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$2.02M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$2.02M	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$817.00K	USD	Point-in-time
Income taxes payable, net	`IncomeTaxesPayableNet`	$817.00K	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$64.00M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$64.00M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$58.05M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$58.05M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$36.60M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$36.60M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$44.51M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$44.51M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$188.99M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$188.99M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$522.95M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$522.95M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$422.25M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$422.25M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.68B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.68B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.70B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.70B	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$790.83M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$790.83M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$753.00M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$753.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$458.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$458.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$465.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$465.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$949.51M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$949.51M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$894.28M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$894.28M	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.16B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.16B	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 capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$11.87B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$11.87B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$11.87B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$11.87B	USD	Point-in-time

Income Statement 184 line items

Line Item	Tag	Value	Unit	Period
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$394.60M	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$394.60M	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.83B	USD	3 Qtrs
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.83B	USD	3 Qtrs
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$359.13M	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$359.13M	USD	1 Quarter
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.92B	USD	3 Qtrs
Regulated operations revenues	`RegulatedOperatingRevenueGas`	$1.92B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$720.05M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$720.05M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$774.89M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$774.89M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$1.92B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$1.92B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$2.23B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$2.23B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.84B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.84B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$4.07B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$4.07B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.08B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.08B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.17B	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.17B	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$111.71M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$111.71M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$984.19M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$984.19M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$908.65M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$908.65M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$170.06M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$170.06M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$401.19M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$401.19M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$131.42M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$131.42M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$126.85M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$126.85M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$404.55M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$404.55M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$322.57M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$322.57M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$105.52M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$105.52M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$329.75M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$329.75M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$107.36M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$107.36M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$66.41M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$66.41M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$21.15M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$21.15M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$66.98M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$66.98M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$22.28M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$22.28M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$644.93M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$644.93M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$685.69M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$685.69M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$2.01B	USD	3 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$2.01B	USD	3 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.77B	USD	3 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.77B	USD	3 Qtrs
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	$71.23M	USD	3 Qtrs
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	$71.23M	USD	3 Qtrs
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	1 Quarter
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	1 Quarter
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	1 Quarter
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	1 Quarter
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	3 Qtrs
Goodwill impairment and loss on sale	`GoodwillImpairmentAndLossOnSale`	-	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$3.79B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$3.79B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$3.54B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$3.54B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$1.11B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.11B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.02B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.02B	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$302.83M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$302.83M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$280.20M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$280.20M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$61.48M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$61.48M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$60.23M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$60.23M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$218.68M	USD	3 Qtrs
Net interest deductions	`InterestExpenseNonoperating`	$218.68M	USD	3 Qtrs
Net interest deductions	`InterestExpenseNonoperating`	$72.00M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$72.00M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$77.73M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$77.73M	USD	1 Quarter
Net interest deductions	`InterestExpenseNonoperating`	$223.10M	USD	3 Qtrs
Net interest deductions	`InterestExpenseNonoperating`	$223.10M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$14.46M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$14.46M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$49.82M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$49.82M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$52.53M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$52.53M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$16.76M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$16.76M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-60.97M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-60.97M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-57.53M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-57.53M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-173.29M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-173.29M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-166.15M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-166.15M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$129.54M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$129.54M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$114.05M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$114.05M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$511.00K	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$511.00K	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.70M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.70M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$19.11M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$19.11M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.27M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.27M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$32.17M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$32.17M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-2.15M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-2.15M	USD	1 Quarter
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$3.97M	USD	1 Quarter
Net income	`ProfitLoss`	$3.97M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$736.00K	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$736.00K	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.86M	USD	3 Qtrs
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.86M	USD	3 Qtrs
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.37M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.37M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.08M	USD	3 Qtrs
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.08M	USD	3 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$106.36M	USD	3 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$106.36M	USD	3 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$3.23M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$3.23M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$289.00K	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$289.00K	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$78.02M	USD	3 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$78.02M	USD	3 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$1.48	USD	3 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$1.48	USD	3 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	-	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	-	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$0.05	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$0.05	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$1.11	USD	3 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$1.11	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	-	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	-	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$0.04	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$0.04	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.10	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.10	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.48	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.48	USD	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	70.49M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	70.49M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.63M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.63M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.82M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.82M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.88M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	71.88M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	72.09M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	72.09M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.85M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.85M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	70.68M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	70.68M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.99M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	71.99M	shares	3 Qtrs

Cash Flow Statement 180 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$3.97M	USD	1 Quarter
Net income	`ProfitLoss`	$3.97M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$322.57M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$322.57M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$105.52M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$105.52M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$329.75M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$329.75M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$107.36M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$107.36M	USD	1 Quarter
Impairment of assets and other charges	`ImpairmentOfAssetsAndOtherCharges`	-	USD	3 Qtrs
Impairment of assets and other charges	`ImpairmentOfAssetsAndOtherCharges`	-	USD	3 Qtrs
Impairment of assets and other charges	`ImpairmentOfAssetsAndOtherCharges`	$71.23M	USD	3 Qtrs
Impairment of assets and other charges	`ImpairmentOfAssetsAndOtherCharges`	$71.23M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-35.26M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-35.26M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-45.32M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-45.32M	USD	3 Qtrs
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$2.65M	USD	3 Qtrs
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$2.65M	USD	3 Qtrs
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$3.09M	USD	3 Qtrs
Gains on sale of property and equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$3.09M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$10.02M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$10.02M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$8.56M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$8.56M	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$5.55M	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$5.55M	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$82.00K	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$82.00K	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-187.10M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-187.10M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$40.23M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$40.23M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-43.50M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-43.50M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-45.20M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInAccruedUtilityRevenue`	$-45.20M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-732.60M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-732.60M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$252.02M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$252.02M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-360.55M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-360.55M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-99.76M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-99.76M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$1.69M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$1.69M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$12.69M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$12.69M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-315.73M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-315.73M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$143.23M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$143.23M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$16.58M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$16.58M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$-1.24M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$-1.24M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-55.47M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-55.47M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-22.77M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-22.77M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$198.43M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$198.43M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.15B	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.15B	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$664.59M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$664.59M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$709.81M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$709.81M	USD	3 Qtrs
Proceeds from the sale of business, net of cash sold	`ProceedsFromDivestitureOfBusinesses`	$1.02B	USD	3 Qtrs
Proceeds from the sale of business, net of cash sold	`ProceedsFromDivestitureOfBusinesses`	$1.02B	USD	3 Qtrs
Proceeds from the sale of business, net of cash sold	`ProceedsFromDivestitureOfBusinesses`	-	USD	3 Qtrs
Proceeds from the sale of business, net of cash sold	`ProceedsFromDivestitureOfBusinesses`	-	USD	3 Qtrs
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	-	USD	3 Qtrs
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	-	USD	3 Qtrs
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$21.38M	USD	3 Qtrs
Proceeds from the sale of property	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$21.38M	USD	3 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-6.97M	USD	3 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-6.97M	USD	3 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-4.80M	USD	3 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$-4.80M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-6.15M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-6.15M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-5.92M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-5.92M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$357.07M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$357.07M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-687.32M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-687.32M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$249.24M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$249.24M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$6.68M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$6.68M	USD	3 Qtrs
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$39.89M	USD	3 Qtrs
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$39.89M	USD	3 Qtrs
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$92.84M	USD	3 Qtrs
Redemption of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$92.84M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$133.28M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$133.28M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$130.23M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$130.23M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$280.41M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$280.41M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$1.04B	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$1.04B	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$168.13M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$168.13M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$525.51M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$525.51M	USD	3 Qtrs
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$34.50M	USD	3 Qtrs
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$34.50M	USD	3 Qtrs
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-115.00M	USD	3 Qtrs
Change in short-term portion of credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-115.00M	USD	3 Qtrs
Change in long-term credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	-	USD	3 Qtrs
Change in long-term credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	-	USD	3 Qtrs
Change in long-term credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-50.00M	USD	3 Qtrs
Change in long-term credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-50.00M	USD	3 Qtrs
Issuance of short-term debt	`ProceedsFromShortTermDebt`	-	USD	3 Qtrs
Issuance of short-term debt	`ProceedsFromShortTermDebt`	-	USD	3 Qtrs
Issuance of short-term debt	`ProceedsFromShortTermDebt`	$450.00M	USD	3 Qtrs
Issuance of short-term debt	`ProceedsFromShortTermDebt`	$450.00M	USD	3 Qtrs
Repayment of short-term debt	`RepaymentsOfShortTermDebt`	-	USD	3 Qtrs
Repayment of short-term debt	`RepaymentsOfShortTermDebt`	-	USD	3 Qtrs
Repayment of short-term debt	`RepaymentsOfShortTermDebt`	$1.82B	USD	3 Qtrs
Repayment of short-term debt	`RepaymentsOfShortTermDebt`	$1.82B	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.48M	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.48M	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.74M	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.74M	USD	3 Qtrs
Proceeds from Centuri initial public offering, net	`ProceedsFromIssuanceInitialPublicOffering`	$327.97M	USD	3 Qtrs
Proceeds from Centuri initial public offering, net	`ProceedsFromIssuanceInitialPublicOffering`	$327.97M	USD	3 Qtrs
Proceeds from Centuri initial public offering, net	`ProceedsFromIssuanceInitialPublicOffering`	-	USD	3 Qtrs
Proceeds from Centuri initial public offering, net	`ProceedsFromIssuanceInitialPublicOffering`	-	USD	3 Qtrs
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-12.64M	USD	3 Qtrs
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-12.64M	USD	3 Qtrs
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-12.21M	USD	3 Qtrs
Other, including principal payments on finance leases	`ProceedsFromPaymentsForOtherFinancingActivities`	$-12.21M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-116.77M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-116.77M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-597.54M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-597.54M	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$102.00K	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$102.00K	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-142.00K	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-142.00K	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-41.94M	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-41.94M	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$350.11M	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$350.11M	USD	3 Qtrs
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$104.94M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$104.94M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$456.64M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$456.64M	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 beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$123.08M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$123.08M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$104.94M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$104.94M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$456.64M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$456.64M	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
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$123.08M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$123.08M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$196.61M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$196.61M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$204.13M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$204.13M	USD	3 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$5.96M	USD	3 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$5.96M	USD	3 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$8.11M	USD	3 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$8.11M	USD	3 Qtrs

Stockholders Equity 30 line items

Line Item	Tag	Value	Unit	Period
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
Redemption value adjustments	`MinorityInterestChangeInRedemptionValue`	$194.00K	USD	3 Qtrs
Redemption value adjustments	`MinorityInterestChangeInRedemptionValue`	$194.00K	USD	3 Qtrs
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.74M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	71.56M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.31B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.63B	USD	Point-in-time
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`	$1.86	USD	3 Qtrs
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.86	USD	3 Qtrs
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.86	USD	3 Qtrs
Dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.86	USD	3 Qtrs
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

Comprehensive Income 80 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$2.66M	USD	1 Quarter
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$110.44M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$81.88M	USD	3 Qtrs
Net income	`ProfitLoss`	$3.97M	USD	1 Quarter
Net income	`ProfitLoss`	$3.97M	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`	$99.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$99.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$99.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$99.00K	USD	3 Qtrs
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`	$-760.00K	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-760.00K	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.45M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.45M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-4.36M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-4.36M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-253.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-253.00K	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$270.00K	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$270.00K	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$1.10M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$1.10M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$3.30M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$3.30M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$90.00K	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$90.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-196.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-196.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.15M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.15M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-589.00K	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-589.00K	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-384.00K	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-384.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.30M	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.30M	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.26M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.26M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.68M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.68M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$130.00K	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$130.00K	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.14M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.14M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$719.00K	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$719.00K	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.06M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.06M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.06M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.06M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$4.72M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$4.72M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$82.59M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$82.59M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$109.29M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$109.29M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.90M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.90M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$4.23M	USD	3 Qtrs
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$4.23M	USD	3 Qtrs
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.69M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.69M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$736.00K	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$736.00K	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$3.86M	USD	3 Qtrs
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$3.86M	USD	3 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$1.17M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$1.17M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$78.74M	USD	3 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$78.74M	USD	3 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$2.03M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$2.03M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$105.07M	USD	3 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$105.07M	USD	3 Qtrs

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