10-Q Filing

SOUTHWEST GAS HOLDINGS, INC. CIK: 1692115 Q3 2021

Filing Information

Form Type	10-Q
Accession Number	`0001692115-21-000048`
Period End Date	20210930
Filing Date	20211109
Fiscal Year	2021
Fiscal Period	Q3
XBRL Instance	swx-20210930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 88 Income Statement 132 Cash Flow Statement 146 Stockholders Equity 15 Comprehensive Income 84

Balance Sheet 88 line items

Line Item	Tag	Value	Unit	Period
Common stock, par (in USD per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par (in USD per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	57.19M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	60.38M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	60.38M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentGasPlant`	$8.38B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentGasPlant`	$8.74B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.42B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.50B	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$211.43M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$153.10M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$6.18B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$6.40B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$1.31B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$834.25M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$186.69M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$83.35M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$692.13M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$522.17M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$39.70M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$82.40M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$10.88M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$32.55M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$2.05M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$240.83M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$170.15M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$200.70M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$871.01M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.39B	USD	Point-in-time
Goodwill	`Goodwill`	$791.90M	USD	Point-in-time
Goodwill	`Goodwill`	$345.18M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$455.00K	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$268.00K	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$483.11M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$508.88M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$854.51M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.28B	USD	Point-in-time
Total assets	`Assets`	$8.74B	USD	Point-in-time
Total assets	`Assets`	$10.37B	USD	Point-in-time
Common stock	`CommonStockValue`	$58.82M	USD	Point-in-time
Common stock	`CommonStockValue`	$62.01M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.61B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.82B	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-55.95M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-61.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.08B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.07B	USD	Point-in-time
Total equity	`StockholdersEquity`	$2.91B	USD	Point-in-time
Total equity	`StockholdersEquity`	$2.67B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$165.72M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$183.55M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$3.57B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$2.73B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$6.67B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$5.57B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$40.43M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$297.27M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$107.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$272.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$222.96M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$231.30M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$67.92M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$51.82M	USD	Point-in-time
Income taxes payable, net	`AccruedIncomeTaxesCurrent`	$27.49M	USD	Point-in-time
Income taxes payable, net	`AccruedIncomeTaxesCurrent`	$12.56M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$60.66M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$48.64M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$38.60M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$20.54M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$54.64M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$328.94M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$384.44M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$911.97M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.36B	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$647.45M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$789.14M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$404.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$419.00M	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$1.20B	USD	Point-in-time
Other deferred credits and other long-term liabilities	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$1.14B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.25B	USD	Point-in-time
Total deferred income taxes and other credits	`OtherLiabilitiesNoncurrent`	$2.35B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$8.74B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$10.37B	USD	Point-in-time

Income Statement 132 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$255.85M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$210.83M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.07B	USD	3 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.36B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.45B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$976.10M	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$1.41B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$580.39M	USD	1 Quarter
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$2.07B	USD	Annual
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$1.53B	USD	3 Qtrs
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$1.88B	USD	Annual
Utility infrastructure services revenues	`RegulatedOperatingRevenueUtilityInfrastructureServices`	$632.85M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.23B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.51B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.38B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$791.23M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$2.60B	USD	3 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$888.70M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$36.32M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$296.23M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$63.71M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$356.93M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$264.62M	USD	3 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$374.45M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$101.76M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$334.45M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$407.92M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$437.60M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$304.96M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$122.93M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$91.38M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$267.67M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$354.69M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$80.14M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$325.00M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$245.01M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$47.51M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$60.13M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$63.20M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$15.79M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$76.09M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$20.11M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.38B	USD	3 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.86B	USD	Annual
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.67B	USD	Annual
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$502.95M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.25B	USD	3 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$567.27M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$865.40M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$3.10B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.11B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.82B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.34B	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$736.96M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$54.26M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$408.81M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$256.02M	USD	3 Qtrs
Operating income (loss)	`OperatingIncomeLoss`	$270.21M	USD	3 Qtrs
Operating income (loss)	`OperatingIncomeLoss`	$23.30M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$408.41M	USD	Annual
Net interest deductions	`InterestExpense`	$28.31M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$111.70M	USD	Annual
Net interest deductions	`InterestExpense`	$109.54M	USD	Annual
Net interest deductions	`InterestExpense`	$83.14M	USD	3 Qtrs
Net interest deductions	`InterestExpense`	$31.30M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$81.20M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-7.79M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-3.98M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$1.80M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-3.11M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-11.05M	USD	3 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$282.00K	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-85.18M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-26.51M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-34.41M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-109.25M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-94.19M	USD	3 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-119.49M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$176.02M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$27.75M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$170.84M	USD	3 Qtrs
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$288.92M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-11.11M	USD	1 Quarter
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$299.56M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.82M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$63.06M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$6.69M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$42.07M	USD	3 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$58.50M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$34.82M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$225.85M	USD	Annual
Net income (loss)	`ProfitLoss`	$136.03M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$133.95M	USD	3 Qtrs
Net income (loss)	`ProfitLoss`	$-9.29M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$241.06M	USD	Annual
Net income (loss)	`ProfitLoss`	$21.06M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$5.36M	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.28M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$5.19M	USD	3 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.79M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$5.17M	USD	3 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$6.68M	USD	Annual
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$-11.58M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$130.84M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$220.50M	USD	Annual
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$128.78M	USD	3 Qtrs
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$18.27M	USD	1 Quarter
Net income (loss) attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$234.38M	USD	Annual
Basic (in USD per share)	`EarningsPerShareBasic`	$0.32	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$-0.19	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$3.97	USD	Annual
Basic (in USD per share)	`EarningsPerShareBasic`	$4.03	USD	Annual
Basic (in USD per share)	`EarningsPerShareBasic`	$2.31	USD	3 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$2.23	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$3.97	USD	Annual
Diluted (in USD per share)	`EarningsPerShareDiluted`	$-0.19	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$2.31	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$4.02	USD	Annual
Diluted (in USD per share)	`EarningsPerShareDiluted`	$2.23	USD	3 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$0.32	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.21M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.64M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	56.27M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.69M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	55.68M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	55.51M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.31M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.82M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	56.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.75M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.74M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.58M	shares	Annual

Cash Flow Statement 146 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$225.85M	USD	Annual
Net income	`ProfitLoss`	$136.03M	USD	3 Qtrs
Net income	`ProfitLoss`	$133.95M	USD	3 Qtrs
Net income	`ProfitLoss`	$-9.29M	USD	1 Quarter
Net income	`ProfitLoss`	$241.06M	USD	Annual
Net income	`ProfitLoss`	$21.06M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$91.38M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$267.67M	USD	3 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$354.69M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$80.14M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$325.00M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$245.01M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-58.34M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-45.37M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-45.81M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-37.75M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$76.77M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$68.71M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$62.08M	USD	3 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$42.14M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$-42.70M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$3.20M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$-42.60M	USD	3 Qtrs
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$700.00K	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$293.41M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-38.02M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-59.90M	USD	3 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$317.07M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$251.00K	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-14.82M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-51.09M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-59.03M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$17.99M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$26.07M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$3.13M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$5.95M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-121.19M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-23.29M	USD	3 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-121.27M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-9.53M	USD	Annual
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$5.37M	USD	3 Qtrs
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$6.63M	USD	Annual
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$2.90M	USD	Annual
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$581.00K	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.62M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.79M	USD	3 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$9.00M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$7.68M	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$3.41M	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	-	USD	3 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$1.31M	USD	Annual
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$4.39M	USD	Annual
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$21.37M	USD	Annual
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$7.96M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$19.17M	USD	3 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$24.37M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-55.00M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-67.92M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-52.02M	USD	3 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-57.27M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$51.52M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$487.82M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$609.70M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$189.78M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$851.24M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$699.37M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$632.47M	USD	3 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$506.74M	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$830.39M	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$830.14M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$250.00K	USD	3 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$28.36M	USD	Annual
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$7.69M	USD	3 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$14.28M	USD	Annual
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$11.64M	USD	Annual
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$7.94M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-17.24M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-6.52M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-14.76M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-8.81M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.50B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-859.14M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-618.51M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.31B	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$119.24M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$259.42M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$90.64M	USD	3 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$210.81M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$93.32M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$102.29M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$123.10M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$134.48M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$1.65B	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$1.67B	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$650.62M	USD	3 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$699.60M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$406.81M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$473.93M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$289.30M	USD	3 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$375.91M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-58.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-92.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-150.00M	USD	3 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-92.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$24.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-157.00M	USD	3 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$218.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$165.00M	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.74M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.25M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.25M	USD	3 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.74M	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-4.36M	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.16M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-4.09M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.60M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$245.01M	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$105.31M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$1.47B	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$1.37B	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$635.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$198.00K	USD	3 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-109.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-209.00K	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$162.75M	USD	Annual
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-25.59M	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$103.34M	USD	3 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-4.54M	USD	Annual
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$83.35M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.54M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$23.95M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$28.48M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$186.69M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$83.35M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.54M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$23.95M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$28.48M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$186.69M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$63.74M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$98.57M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$57.13M	USD	3 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$103.84M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$12.72M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$7.67M	USD	3 Qtrs
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$-13.62M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$-16.01M	USD	3 Qtrs

Stockholders Equity 15 line items

Line Item	Tag	Value	Unit	Period
Beginning balance (in shares)	`CommonStockSharesOutstanding`	60.38M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.24M	USD	3 Qtrs
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.69M	USD	Annual
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.65M	USD	Annual
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-783.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-413.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.05M	USD	3 Qtrs
Redemption value adjustments	`MinorityInterestChangeInRedemptionValue`	$12.64M	USD	3 Qtrs
Ending balance (in shares)	`CommonStockSharesOutstanding`	60.38M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.71	USD	3 Qtrs
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.57	USD	1 Quarter
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.78	USD	3 Qtrs
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.59	USD	1 Quarter

Comprehensive Income 84 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$225.85M	USD	Annual
Net income	`ProfitLoss`	$136.03M	USD	3 Qtrs
Net income	`ProfitLoss`	$133.95M	USD	3 Qtrs
Net income	`ProfitLoss`	$-9.29M	USD	1 Quarter
Net income	`ProfitLoss`	$241.06M	USD	Annual
Net income	`ProfitLoss`	$21.06M	USD	1 Quarter
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-54.03M	USD	Annual
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-43.73M	USD	Annual
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$220.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$766.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$659.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$183.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$547.00K	USD	3 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$901.00K	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-25.42M	USD	3 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-8.47M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-26.00M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-7.19M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-32.61M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-21.56M	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$1.43M	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	3 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$21.83M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$19.14M	USD	3 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-21.13M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$7.28M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-2.96M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$6.38M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.03M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.42M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.40M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-3.08M	USD	3 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.38M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-4.14M	USD	3 Qtrs
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.24M	USD	3 Qtrs
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.69M	USD	Annual
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.65M	USD	Annual
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-783.00K	USD	1 Quarter
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-413.00K	USD	1 Quarter
Amounts reclassified into net income (loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.05M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$2.69M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$783.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$2.05M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$1.24M	USD	3 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$1.65M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$413.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-280.00K	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.02M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-324.00K	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.19M	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.06M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$2.58M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.05M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-5.01M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-263.00K	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.95M	USD	3 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-3.17M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.83M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$237.89M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$23.90M	USD	1 Quarter
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$220.85M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$137.90M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$141.08M	USD	3 Qtrs
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-9.56M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$5.19M	USD	3 Qtrs
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$5.36M	USD	Annual
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$5.17M	USD	3 Qtrs
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.28M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$6.68M	USD	Annual
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.79M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$135.89M	USD	3 Qtrs
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$215.49M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$21.11M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$231.21M	USD	Annual
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$-11.84M	USD	1 Quarter
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$132.73M	USD	3 Qtrs

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