10-Q Filing

SOUTHWEST GAS HOLDINGS, INC. CIK: 1692115 Q2 2021

Filing Information

Form Type	10-Q
Accession Number	`0001692115-21-000040`
Period End Date	20210630
Filing Date	20210805
Fiscal Year	2021
Fiscal Period	Q2
XBRL Instance	swx-20210630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 88 Income Statement 132 Cash Flow Statement 146 Stockholders Equity 16 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`	59.09M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	57.19M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
Common stock, outstanding (in shares)	`CommonStockSharesOutstanding`	59.09M	shares	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentGasPlant`	$8.66B	USD	Point-in-time
Gas plant	`PublicUtilitiesPropertyPlantAndEquipmentGasPlant`	$8.38B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.48B	USD	Point-in-time
Less: accumulated depreciation	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$2.42B	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$151.36M	USD	Point-in-time
Construction work in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$211.43M	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$6.18B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$6.33B	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$834.25M	USD	Point-in-time
Other property and investments	`OtherPropertyAndInvestments`	$860.70M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$47.56M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$83.35M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$512.38M	USD	Point-in-time
Accounts receivable, net of allowances	`AccountsReceivableNetCurrent`	$522.17M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$38.50M	USD	Point-in-time
Accrued utility revenue	`AccruedUtilityRevenue`	$82.40M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$23.84M	USD	Point-in-time
Income taxes receivable, net	`IncomeTaxesReceivable`	$10.88M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$235.10M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasCost`	$2.05M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$149.40M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$170.15M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.01B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$871.01M	USD	Point-in-time
Goodwill	`Goodwill`	$345.18M	USD	Point-in-time
Goodwill	`Goodwill`	$348.17M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$345.00K	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxAssetsNet`	$455.00K	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$488.04M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$508.88M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$836.56M	USD	Point-in-time
Total noncurrent assets	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$854.51M	USD	Point-in-time
Total assets	`Assets`	$9.04B	USD	Point-in-time
Total assets	`Assets`	$8.74B	USD	Point-in-time
Common stock	`CommonStockValue`	$58.82M	USD	Point-in-time
Common stock	`CommonStockValue`	$60.72M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.73B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.61B	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-55.69M	USD	Point-in-time
Accumulated other comprehensive loss, net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-61.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.07B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.11B	USD	Point-in-time
Total equity	`StockholdersEquity`	$2.67B	USD	Point-in-time
Total equity	`StockholdersEquity`	$2.85B	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$165.72M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$200.53M	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$2.73B	USD	Point-in-time
Long-term debt, less current maturities	`LongTermDebtNoncurrent`	$2.48B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$5.57B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$5.53B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$40.43M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$319.42M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$318.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$107.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$182.30M	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`	$44.09M	USD	Point-in-time
Income taxes payable, net	`AccruedIncomeTaxesCurrent`	$19.26M	USD	Point-in-time
Income taxes payable, net	`AccruedIncomeTaxesCurrent`	$12.56M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$51.71M	USD	Point-in-time
Accrued general taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$48.64M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$19.65M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$20.54M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	$54.64M	USD	Point-in-time
Deferred purchased gas costs	`DeferredGasPurchasesCurrent`	-	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$317.97M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$328.94M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.27B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$911.97M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$694.72M	USD	Point-in-time
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndUnamortizedInvestmentTaxCredits`	$647.45M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$404.00M	USD	Point-in-time
Accumulated removal costs	`OtherAccruedLiabilitiesNoncurrent`	$409.00M	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`	$2.24B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$9.04B	USD	Point-in-time
Total capitalization and liabilities	`LiabilitiesAndStockholdersEquity`	$8.74B	USD	Point-in-time

Income Statement 132 line items

Line Item	Tag	Value	Unit	Period
Gas operating revenues	`RegulatedOperatingRevenueGas`	$814.73M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$262.43M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$292.80M	USD	1 Quarter
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.40B	USD	Annual
Gas operating revenues	`RegulatedOperatingRevenueGas`	$765.26M	USD	2 Qtrs
Gas operating revenues	`RegulatedOperatingRevenueGas`	$1.35B	USD	Annual
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$259.07M	USD	1 Quarter
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$763.86M	USD	2 Qtrs
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$826.86M	USD	2 Qtrs
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.40B	USD	Annual
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.34B	USD	Annual
Utility infrastructure services revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$291.34M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$757.25M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.17B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.59B	USD	2 Qtrs
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$821.42M	USD	1 Quarter
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$3.41B	USD	Annual
Total operating revenues	`RegulatedAndUnregulatedOperatingRevenue`	$1.71B	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$228.29M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$67.47M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$232.52M	USD	2 Qtrs
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$347.06M	USD	Annual
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$76.50M	USD	1 Quarter
Net cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$355.67M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$415.81M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$203.20M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$104.83M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$211.52M	USD	2 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$99.42M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$416.44M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$164.87M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$343.45M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$82.85M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$77.22M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$176.29M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$320.23M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$31.72M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$40.02M	USD	2 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$19.34M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$62.72M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$71.77M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$15.34M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$814.25M	USD	2 Qtrs
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.62B	USD	Annual
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$478.64M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$1.79B	USD	Annual
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$430.22M	USD	1 Quarter
Utility infrastructure services expenses	`CostOfGoodsAndServicesSold`	$749.54M	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.97B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.77B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$689.67M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$762.15M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$1.38B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$1.47B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$232.72M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$215.94M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$59.27M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$439.78M	USD	Annual
Operating income	`OperatingIncomeLoss`	$392.41M	USD	Annual
Operating income	`OperatingIncomeLoss`	$67.57M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$26.45M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$106.55M	USD	Annual
Net interest deductions	`InterestExpense`	$49.90M	USD	2 Qtrs
Net interest deductions	`InterestExpense`	$110.83M	USD	Annual
Net interest deductions	`InterestExpense`	$25.94M	USD	1 Quarter
Net interest deductions	`InterestExpense`	$54.83M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$7.92M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-863.00K	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-10.74M	USD	Annual
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-1.31M	USD	1 Quarter
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$-12.85M	USD	2 Qtrs
Other income (deductions)	`OtherNonoperatingIncomeExpense`	$5.19M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-121.57M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-50.77M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-18.52M	USD	1 Quarter
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-101.36M	USD	Annual
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-67.67M	USD	2 Qtrs
Total other income and (expenses)	`NonoperatingIncomeExpense`	$-27.25M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$270.83M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$32.02M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$148.27M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$181.95M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$338.42M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$49.05M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$36.63M	USD	2 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$59.52M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$67.00M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$35.38M	USD	2 Qtrs
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$5.54M	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$9.17M	USD	1 Quarter
Net income	`ProfitLoss`	$145.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$39.88M	USD	1 Quarter
Net income	`ProfitLoss`	$26.47M	USD	1 Quarter
Net income	`ProfitLoss`	$112.89M	USD	2 Qtrs
Net income	`ProfitLoss`	$211.32M	USD	Annual
Net income	`ProfitLoss`	$271.42M	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.38M	USD	2 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$2.91M	USD	2 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.92M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$7.19M	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.35M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.74M	USD	Annual
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$142.41M	USD	2 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$207.58M	USD	Annual
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$37.97M	USD	1 Quarter
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$110.51M	USD	2 Qtrs
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$264.23M	USD	Annual
Net income attributable to Southwest Gas Holdings, Inc.	`NetIncomeLoss`	$25.12M	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$2.45	USD	2 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$3.77	USD	Annual
Basic (in USD per share)	`EarningsPerShareBasic`	$4.61	USD	Annual
Basic (in USD per share)	`EarningsPerShareBasic`	$0.43	USD	1 Quarter
Basic (in USD per share)	`EarningsPerShareBasic`	$2.00	USD	2 Qtrs
Basic (in USD per share)	`EarningsPerShareBasic`	$0.68	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$4.60	USD	Annual
Diluted (in USD per share)	`EarningsPerShareDiluted`	$2.45	USD	2 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$3.76	USD	Annual
Diluted (in USD per share)	`EarningsPerShareDiluted`	$0.43	USD	1 Quarter
Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.99	USD	2 Qtrs
Diluted (in USD per share)	`EarningsPerShareDiluted`	$0.68	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.11M	shares	2 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	55.46M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	55.10M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	55.39M	shares	2 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	57.35M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.61M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.71M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	57.44M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.45M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.17M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.53M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.20M	shares	2 Qtrs

Cash Flow Statement 146 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$145.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$39.88M	USD	1 Quarter
Net income	`ProfitLoss`	$26.47M	USD	1 Quarter
Net income	`ProfitLoss`	$112.89M	USD	2 Qtrs
Net income	`ProfitLoss`	$211.32M	USD	Annual
Net income	`ProfitLoss`	$271.42M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$164.87M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$343.45M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$82.85M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$77.22M	USD	1 Quarter
Depreciation and amortization	`DepreciationAndAmortization`	$176.29M	USD	2 Qtrs
Depreciation and amortization	`DepreciationAndAmortization`	$320.23M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-53.45M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-63.77M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-31.12M	USD	2 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-44.18M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$29.02M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$61.38M	USD	Annual
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$-10.01M	USD	2 Qtrs
Accounts receivable, net of allowances	`IncreaseDecreaseInAccountsReceivable`	$9.75M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$-43.30M	USD	2 Qtrs
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$2.70M	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$900.00K	USD	Annual
Accrued utility revenue	`IncreaseDecreaseInContractWithCustomerAsset`	$-43.90M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$305.04M	USD	Annual
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-53.59M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$287.69M	USD	2 Qtrs
Deferred purchased gas costs	`IncreaseDecreaseInDeferredGasCost`	$-38.45M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-41.08M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-47.20M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-908.00K	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-1.57M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$2.99M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$9.02M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-3.16M	USD	2 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$16.53M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-97.69M	USD	Annual
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$-78.54M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$31.93M	USD	2 Qtrs
Other current assets and liabilities	`IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet`	$3.04M	USD	Annual
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$4.03M	USD	2 Qtrs
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$309.00K	USD	2 Qtrs
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$5.57M	USD	Annual
Gains on sale of equipment	`GainLossOnSaleOfPropertyPlantEquipment`	$4.95M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$4.33M	USD	2 Qtrs
Changes in undistributed stock compensation	`ShareBasedCompensation`	$6.53M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$8.52M	USD	Annual
Changes in undistributed stock compensation	`ShareBasedCompensation`	$5.74M	USD	2 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	-	USD	2 Qtrs
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$4.38M	USD	Annual
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.54M	USD	Annual
Equity AFUDC	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$2.18M	USD	2 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$13.45M	USD	Annual
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$8.27M	USD	2 Qtrs
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$35.49M	USD	Annual
Changes in deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$11.17M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-54.82M	USD	2 Qtrs
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-61.13M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-52.87M	USD	Annual
Changes in other liabilities and deferred credits	`IncreaseDecreaseInOtherOperatingLiabilities`	$-45.01M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$597.10M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$252.30M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$375.14M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.36M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$338.05M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$890.00M	USD	Annual
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$423.44M	USD	2 Qtrs
Construction expenditures and property additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$739.72M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$28.11M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$7.51M	USD	2 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$13.62M	USD	Annual
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$4.10M	USD	2 Qtrs
Changes in customer advances	`ChangesInCustomerAdvancesInvestingActivities`	$17.44M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-9.16M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-13.37M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-4.79M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-18.79M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-708.91M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-321.38M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-885.71M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-414.54M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$121.30M	USD	2 Qtrs
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$110.70M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$205.05M	USD	Annual
Issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$55.50M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$61.45M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$131.19M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$120.83M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$67.13M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$620.30M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$82.25M	USD	2 Qtrs
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$124.32M	USD	Annual
Issuance of long-term debt, net	`ProceedsFromIssuanceOfLongTermDebt`	$730.30M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$277.72M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$299.37M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$60.50M	USD	2 Qtrs
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$117.54M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-46.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$150.00M	USD	Annual
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	$-150.00M	USD	2 Qtrs
Change in credit facility and commercial paper	`ProceedsFromRepaymentsOfLinesOfCreditAndCommercialPaper`	-	USD	2 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$58.00M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-153.00M	USD	2 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$211.00M	USD	2 Qtrs
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$260.00M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.74M	USD	Annual
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.24M	USD	2 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.74M	USD	2 Qtrs
Withholding remittance - share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$1.24M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.62M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.88M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-3.56M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.46M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$284.05M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$189.62M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$449.84M	USD	Annual
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$304.00M	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$586.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-84.00K	USD	Annual
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-170.00K	USD	2 Qtrs
Effects of currency translation on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$188.00K	USD	2 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-152.03M	USD	Annual
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$150.05M	USD	2 Qtrs
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$161.15M	USD	Annual
Change in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-35.79M	USD	2 Qtrs
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$38.45M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$199.59M	USD	Point-in-time
Cash and cash equivalents at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$47.56M	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`	$83.35M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$38.45M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$199.59M	USD	Point-in-time
Cash and cash equivalents at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$47.56M	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`	$83.35M	USD	Point-in-time
Interest paid, net of amounts capitalized	`InterestPaidNet`	$101.23M	USD	Annual
Interest paid, net of amounts capitalized	`InterestPaidNet`	$47.48M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$51.43M	USD	2 Qtrs
Interest paid, net of amounts capitalized	`InterestPaidNet`	$103.69M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$6.66M	USD	2 Qtrs
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$-18.49M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$15.12M	USD	Annual
Income taxes paid (received), net	`IncomeTaxesPaidNet`	$-19.41M	USD	2 Qtrs

Stockholders Equity 16 line items

Line Item	Tag	Value	Unit	Period
Beginning balance (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	59.09M	shares	Point-in-time
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-635.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-827.00K	USD	2 Qtrs
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.27M	USD	2 Qtrs
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.54M	USD	Annual
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-414.00K	USD	1 Quarter
FSIRS amounts reclassified to net income, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.02M	USD	Annual
Redemption value adjustments	`MinorityInterestChangeInRedemptionValue`	$31.91M	USD	2 Qtrs
Redemption value adjustments	`MinorityInterestChangeInRedemptionValue`	$32.00M	USD	1 Quarter
Ending balance (in shares)	`CommonStockSharesOutstanding`	57.19M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	59.09M	shares	Point-in-time
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.19	USD	2 Qtrs
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.59	USD	1 Quarter
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.57	USD	1 Quarter
Dividends declared per share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.14	USD	2 Qtrs

Comprehensive Income 84 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$145.32M	USD	2 Qtrs
Net income	`ProfitLoss`	$39.88M	USD	1 Quarter
Net income	`ProfitLoss`	$26.47M	USD	1 Quarter
Net income	`ProfitLoss`	$112.89M	USD	2 Qtrs
Net income	`ProfitLoss`	$211.32M	USD	Annual
Net income	`ProfitLoss`	$271.42M	USD	Annual
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-43.73M	USD	Annual
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-54.03M	USD	Annual
Net actuarial loss	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$364.00K	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$440.00K	USD	2 Qtrs
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$802.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$182.00K	USD	1 Quarter
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$923.00K	USD	Annual
Amortization of prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$220.00K	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-16.95M	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-8.47M	USD	1 Quarter
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-31.32M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-14.38M	USD	2 Qtrs
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-23.26M	USD	Annual
Amortization of net actuarial loss	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-7.19M	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$1.43M	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	Annual
Prior service cost	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$6.38M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-3.86M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$7.28M	USD	1 Quarter
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$14.55M	USD	2 Qtrs
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$-23.45M	USD	Annual
Regulatory adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansRegulatoryAdjustmentNetOfTax`	$12.76M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.83M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.76M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$7.75M	USD	Annual
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.06M	USD	2 Qtrs
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.38M	USD	1 Quarter
Net defined benefit pension plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.03M	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-635.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-827.00K	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-1.27M	USD	2 Qtrs
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.54M	USD	Annual
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-414.00K	USD	1 Quarter
Amounts reclassified into net income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-2.02M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$635.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$1.27M	USD	2 Qtrs
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$2.02M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$414.00K	USD	1 Quarter
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$2.54M	USD	Annual
Net forward-starting interest rate swaps	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$827.00K	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$909.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.21M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.75M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.73M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.79M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$5.66M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.70M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-7.04M	USD	Annual
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.46M	USD	1 Quarter
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.32M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.11M	USD	2 Qtrs
Total other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-71.00K	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$114.00M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$204.28M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$29.17M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$271.35M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$150.63M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$43.34M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.92M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$3.74M	USD	Annual
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.38M	USD	2 Qtrs
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$2.91M	USD	2 Qtrs
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$7.19M	USD	Annual
Comprehensive income attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.35M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$27.82M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$41.42M	USD	1 Quarter
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$200.54M	USD	Annual
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$111.62M	USD	2 Qtrs
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$264.16M	USD	Annual
Comprehensive income attributable to Southwest Gas Holdings, Inc.	`ComprehensiveIncomeNetOfTax`	$147.73M	USD	2 Qtrs

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