10-K Filing

ATMOS ENERGY CORP CIK: 731802 FY 2023

Filing Information

Form Type	10-K
Accession Number	`0000731802-23-000028`
Period End Date	20230930
Filing Date	20231114
Fiscal Year	2023
Fiscal Period	FY
XBRL Instance	ato-20230930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 87 Income Statement 63 Cash Flow Statement 122 Stockholders Equity 39

Balance Sheet 87 line items

Line Item	Tag	Value	Unit	Period
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$49.99M	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$40.84M	USD	Point-in-time
Property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceExcludingConstructionWorkInProgress`	$19.40B	USD	Point-in-time
Property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceExcludingConstructionWorkInProgress`	$21.96B	USD	Point-in-time
Securitized intangible asset, accumulated amortization	`FiniteLivedIntangibleAssetsAccumulatedAmortization`	$1.40M	USD	Point-in-time
Common stock stated value per share (USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock stated value per share (USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Construction in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$835.87M	USD	Point-in-time
Construction in progress	`PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress`	$939.93M	USD	Point-in-time
Total property, plant and equipment and construction in progress	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$22.90B	USD	Point-in-time
Common stock shares authorized (in shares)	`CommonStockSharesAuthorized`	200.00M	shares	Point-in-time
Total property, plant and equipment and construction in progress	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$20.24B	USD	Point-in-time
Common stock shares authorized (in shares)	`CommonStockSharesAuthorized`	200.00M	shares	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$3.29B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$3.00B	USD	Point-in-time
Common stock shares issued (in shares)	`CommonStockSharesIssued`	140.90M	shares	Point-in-time
Common stock shares issued (in shares)	`CommonStockSharesIssued`	148.49M	shares	Point-in-time
Common stock shares outstanding (in shares)	`CommonStockSharesOutstanding`	148.49M	shares	Point-in-time
Common stock shares outstanding (in shares)	`CommonStockSharesOutstanding`	140.90M	shares	Point-in-time
Net property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$17.24B	USD	Point-in-time
Net property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$19.61B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$15.40M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$51.55M	USD	Point-in-time
Restricted cash and cash equivalents (See Note 10)	`RestrictedCashAndCashEquivalents`	$3.84M	USD	Point-in-time
Restricted cash and cash equivalents (See Note 10)	`RestrictedCashAndCashEquivalents`	-	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.55M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$20.81M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$19.25M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$116.72M	USD	Point-in-time
Accounts receivable, less allowance for uncollectible accounts of $40,840 in 2023 and $49,993 in 2022	`AccountsReceivableNetCurrent`	$363.71M	USD	Point-in-time
Accounts receivable, less allowance for uncollectible accounts of $40,840 in 2023 and $49,993 in 2022	`AccountsReceivableNetCurrent`	$328.65M	USD	Point-in-time
Gas stored underground	`EnergyRelatedInventoryGasStoredUnderground`	$245.83M	USD	Point-in-time
Gas stored underground	`EnergyRelatedInventoryGasStoredUnderground`	$357.94M	USD	Point-in-time
Other current assets (See Note 3)	`OtherAssetsCurrent`	$2.27B	USD	Point-in-time
Other current assets (See Note 3)	`OtherAssetsCurrent`	$292.04M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$3.05B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$885.77M	USD	Point-in-time
Securitized intangible asset, less accumulated amortization of $1,398 in 2023 (See Note 10)	`FiniteLivedIntangibleAssetsNet`	-	USD	Point-in-time
Securitized intangible asset, less accumulated amortization of $1,398 in 2023 (See Note 10)	`FiniteLivedIntangibleAssetsNet`	$92.20M	USD	Point-in-time
Goodwill	`Goodwill`	$731.26M	USD	Point-in-time
Goodwill	`Goodwill`	$731.26M	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$1.20B	USD	Point-in-time
Deferred charges and other assets	`OtherAssetsNoncurrent`	$1.17B	USD	Point-in-time
Total assets	`Assets`	$22.52B	USD	Point-in-time
Total assets	`Assets`	$22.19B	USD	Point-in-time
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: 2023 148,492,783 shares; 2022 140,896,598 shares	`CommonStockValue`	$704.00K	USD	Point-in-time
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: 2023 148,492,783 shares; 2022 140,896,598 shares	`CommonStockValue`	$742.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$6.68B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$5.84B	USD	Point-in-time
Accumulated other comprehensive income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$369.11M	USD	Point-in-time
Accumulated other comprehensive income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$518.53M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.21B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.67B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$7.91B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$6.79B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$10.87B	USD	Point-in-time
Shareholders equity	`StockholdersEquity`	$9.42B	USD	Point-in-time
Long-term debt	`LongTermDebtAndCapitalLeaseObligations`	$6.55B	USD	Point-in-time
Long-term debt	`LongTermDebtAndCapitalLeaseObligations`	$5.76B	USD	Point-in-time
Securitized long-term debt (See Note 10)	`SecuritizedLongTermDebtExcludingCurrentMaturities`	$85.08M	USD	Point-in-time
Securitized long-term debt (See Note 10)	`SecuritizedLongTermDebtExcludingCurrentMaturities`	-	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$15.18B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$17.51B	USD	Point-in-time
Commitments and contingencies (See Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (See Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$336.08M	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$496.02M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$720.16M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$763.09M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$184.97M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$241.93M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$1.57M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$2.20B	USD	Point-in-time
Current maturities of securitized long-term debt (See Note 10)	`SecuritizedLongTermDebtCurrentMaturities`	-	USD	Point-in-time
Current maturities of securitized long-term debt (See Note 10)	`SecuritizedLongTermDebtCurrentMaturities`	$9.92M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.35B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.60B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.00B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.30B	USD	Point-in-time
Regulatory excess deferred taxes (See Note 15)	`ChangeInTaxRateDeferredTaxLiability`	$385.21M	USD	Point-in-time
Regulatory excess deferred taxes (See Note 15)	`ChangeInTaxRateDeferredTaxLiability`	$253.21M	USD	Point-in-time
Regulatory cost of removal obligation	`RegulatoryCostOfRemovalLiabilityNoncurrent`	$487.63M	USD	Point-in-time
Regulatory cost of removal obligation	`RegulatoryCostOfRemovalLiabilityNoncurrent`	$497.02M	USD	Point-in-time
Deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$599.90M	USD	Point-in-time
Deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$538.30M	USD	Point-in-time
Total shareholders' equity and liabilities	`LiabilitiesAndStockholdersEquity`	$22.19B	USD	Point-in-time
Total shareholders' equity and liabilities	`LiabilitiesAndStockholdersEquity`	$22.52B	USD	Point-in-time

Income Statement 63 line items

Line Item	Tag	Value	Unit	Period
Net unrealized holding gains (losses) on available-for-sale securities, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-55.00K	USD	Annual
Net unrealized holding gains (losses) on available-for-sale securities, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$37.00K	USD	Annual
Net unrealized holding gains (losses) on available-for-sale securities, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-157.00K	USD	Annual
Amortization and unrealized gains on interest rate agreements, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent`	$43.15M	USD	Annual
Amortization and unrealized gains on interest rate agreements, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent`	$86.66M	USD	Annual
Amortization and unrealized gains on interest rate agreements, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent`	$36.88M	USD	Annual
Operating revenues	`Revenues`	$4.28B	USD	Annual
Operating revenues	`Revenues`	$3.41B	USD	Annual
Operating revenues	`Revenues`	$4.20B	USD	Annual
Purchased gas cost	`CostOfRevenue`	$1.45B	USD	Annual
Purchased gas cost	`CostOfRevenue`	$1.68B	USD	Annual
Purchased gas cost	`CostOfRevenue`	$1.03B	USD	Annual
Operation and maintenance expense	`OtherSellingGeneralAndAdministrativeExpense`	$679.02M	USD	Annual
Operation and maintenance expense	`OtherSellingGeneralAndAdministrativeExpense`	$710.16M	USD	Annual
Operation and maintenance expense	`OtherSellingGeneralAndAdministrativeExpense`	$764.91M	USD	Annual
Depreciation and amortization expense	`DepreciationAndAmortization`	$477.98M	USD	Annual
Depreciation and amortization expense	`DepreciationAndAmortization`	$604.33M	USD	Annual
Depreciation and amortization expense	`DepreciationAndAmortization`	$535.65M	USD	Annual
Taxes, other than income	`TaxesOther`	$312.78M	USD	Annual
Taxes, other than income	`TaxesOther`	$352.21M	USD	Annual
Taxes, other than income	`TaxesOther`	$386.80M	USD	Annual
Operating income	`OperatingIncomeLoss`	$1.07B	USD	Annual
Operating income	`OperatingIncomeLoss`	$905.00M	USD	Annual
Operating income	`OperatingIncomeLoss`	$920.98M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$33.74M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$69.78M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$-2.15M	USD	Annual
Interest charges	`InterestExpense`	$102.81M	USD	Annual
Interest charges	`InterestExpense`	$137.28M	USD	Annual
Interest charges	`InterestExpense`	$83.55M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$851.91M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$999.64M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$819.30M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$113.78M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$77.51M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$153.74M	USD	Annual
Net income	`NetIncomeLoss`	$665.56M	USD	Annual
Net income	`NetIncomeLoss`	$885.86M	USD	Annual
Net income	`NetIncomeLoss`	$774.40M	USD	Annual
Basic net income per share (USD per share)	`EarningsPerShareBasic`	$5.61	USD	Annual
Basic net income per share (USD per share)	`EarningsPerShareBasic`	$5.12	USD	Annual
Basic net income per share (USD per share)	`EarningsPerShareBasic`	$6.10	USD	Annual
Diluted net income per share (USD per share)	`EarningsPerShareDiluted`	$6.10	USD	Annual
Diluted net income per share (USD per share)	`EarningsPerShareDiluted`	$5.60	USD	Annual
Diluted net income per share (USD per share)	`EarningsPerShareDiluted`	$5.12	USD	Annual
Weighted average shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	129.78M	shares	Annual
Weighted average shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	137.83M	shares	Annual
Weighted average shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	145.12M	shares	Annual
Weighted average shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	138.10M	shares	Annual
Weighted average shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	145.17M	shares	Annual
Weighted average shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.83M	shares	Annual
Net unrealized holding gains (losses) on available-for-sale securities, net of tax of $37, $(157) and $(55)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-542.00K	USD	Annual
Net unrealized holding gains (losses) on available-for-sale securities, net of tax of $37, $(157) and $(55)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$126.00K	USD	Annual
Net unrealized holding gains (losses) on available-for-sale securities, net of tax of $37, $(157) and $(55)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-191.00K	USD	Annual
Amortization and unrealized gains on interest rate agreements, net of tax of $43,148, $86,664 and $36,875	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$149.29M	USD	Annual
Amortization and unrealized gains on interest rate agreements, net of tax of $43,148, $86,664 and $36,875	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$299.85M	USD	Annual
Amortization and unrealized gains on interest rate agreements, net of tax of $43,148, $86,664 and $36,875	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$127.58M	USD	Annual
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$149.42M	USD	Annual
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$299.31M	USD	Annual
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$127.39M	USD	Annual
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$1.04B	USD	Annual
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$792.96M	USD	Annual
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$1.07B	USD	Annual

Cash Flow Statement 122 line items

Line Item	Tag	Value	Unit	Period
Net income	`NetIncomeLoss`	$665.56M	USD	Annual
Net income	`NetIncomeLoss`	$885.86M	USD	Annual
Net income	`NetIncomeLoss`	$774.40M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$477.98M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$604.33M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$535.65M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$108.22M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$53.65M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$155.35M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$10.74M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$10.18M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$11.26M	USD	Annual
Amortization of debt issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	$3.64M	USD	Annual
Amortization of debt issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	$9.14M	USD	Annual
Amortization of debt issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	$14.03M	USD	Annual
Equity component of AFUDC	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$32.75M	USD	Annual
Equity component of AFUDC	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$45.51M	USD	Annual
Equity component of AFUDC	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$64.02M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-3.27M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$591.00K	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-3.73M	USD	Annual
(Increase) decrease in accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$113.67M	USD	Annual
(Increase) decrease in accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$34.33M	USD	Annual
(Increase) decrease in accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-46.86M	USD	Annual
(Increase) decrease in gas stored underground	`IncreaseDecreaseInInventories`	$66.17M	USD	Annual
(Increase) decrease in gas stored underground	`IncreaseDecreaseInInventories`	$179.82M	USD	Annual
(Increase) decrease in gas stored underground	`IncreaseDecreaseInInventories`	$-112.11M	USD	Annual
(Increase) decrease in Winter Storm Uri current regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsCurrent`	-	USD	Annual
(Increase) decrease in Winter Storm Uri current regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsCurrent`	$2.00B	USD	Annual
(Increase) decrease in Winter Storm Uri current regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsCurrent`	$-2.02B	USD	Annual
Increase in other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$65.98M	USD	Annual
Increase in other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$84.70M	USD	Annual
Increase in other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$36.04M	USD	Annual
Increase in Winter Storm Uri long-term regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	-	USD	Annual
Increase in Winter Storm Uri long-term regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	$76.65M	USD	Annual
Increase in Winter Storm Uri long-term regulatory asset (see Note 3)	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	-	USD	Annual
(Increase) decrease in deferred charges and other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$172.59M	USD	Annual
(Increase) decrease in deferred charges and other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-136.81M	USD	Annual
(Increase) decrease in deferred charges and other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-13.29M	USD	Annual
Increase (decrease) in accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-132.57M	USD	Annual
Increase (decrease) in accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$104.24M	USD	Annual
Increase (decrease) in accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$40.39M	USD	Annual
Increase (decrease) in other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$30.69M	USD	Annual
Increase (decrease) in other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-166.27M	USD	Annual
Increase (decrease) in other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-152.27M	USD	Annual
Increase (decrease) in deferred credits and other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$41.79M	USD	Annual
Increase (decrease) in deferred credits and other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-109.35M	USD	Annual
Increase (decrease) in deferred credits and other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$14.96M	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-1.08B	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$3.46B	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$977.58M	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$2.44B	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.97B	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$2.81B	USD	Annual
Purchases of debt and equity securities	`PaymentsToAcquireInvestments`	$46.79M	USD	Annual
Purchases of debt and equity securities	`PaymentsToAcquireInvestments`	$28.29M	USD	Annual
Purchases of debt and equity securities	`PaymentsToAcquireInvestments`	$49.88M	USD	Annual
Proceeds from sale of debt and equity securities	`ProceedsFromSaleOfTradingSecuritiesHeldforinvestment`	$25.13M	USD	Annual
Proceeds from sale of debt and equity securities	`ProceedsFromSaleOfTradingSecuritiesHeldforinvestment`	$14.96M	USD	Annual
Proceeds from sale of debt and equity securities	`ProceedsFromSaleOfTradingSecuritiesHeldforinvestment`	$4.87M	USD	Annual
Maturities of debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$27.59M	USD	Annual
Maturities of debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$28.85M	USD	Annual
Maturities of debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$13.34M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-11.96M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-19.01M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-10.29M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.80B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.43B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.96B	USD	Annual
Net increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$56.97M	USD	Annual
Net increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$184.97M	USD	Annual
Net increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Proceeds from issuance of long-term debt, net of premium/discount	`ProceedsFromIssuanceOfLongTermDebt`	$797.26M	USD	Annual
Proceeds from issuance of long-term debt, net of premium/discount	`ProceedsFromIssuanceOfLongTermDebt`	$798.80M	USD	Annual
Proceeds from issuance of long-term debt, net of premium/discount	`ProceedsFromIssuanceOfLongTermDebt`	$2.80B	USD	Annual
Proceeds from issuance of securitized long-term debt by AEK	`ProceedsFromIssuanceOfSecuritizedLongTermDebt`	-	USD	Annual
Proceeds from issuance of securitized long-term debt by AEK	`ProceedsFromIssuanceOfSecuritizedLongTermDebt`	$95.00M	USD	Annual
Proceeds from issuance of securitized long-term debt by AEK	`ProceedsFromIssuanceOfSecuritizedLongTermDebt`	-	USD	Annual
Net proceeds from equity offering	`ProceedsFromIssuanceOfCommonStock`	$776.80M	USD	Annual
Net proceeds from equity offering	`ProceedsFromIssuanceOfCommonStock`	$606.67M	USD	Annual
Net proceeds from equity offering	`ProceedsFromIssuanceOfCommonStock`	$806.95M	USD	Annual
Issuance of common stock through stock purchase and employee retirement plans	`ProceedsFromStockPlans`	$15.84M	USD	Annual
Issuance of common stock through stock purchase and employee retirement plans	`ProceedsFromStockPlans`	$15.40M	USD	Annual
Issuance of common stock through stock purchase and employee retirement plans	`ProceedsFromStockPlans`	$15.39M	USD	Annual
Settlement of interest rate swaps	`PaymentsForProceedsFromHedgeFinancingActivities`	$-62.16M	USD	Annual
Settlement of interest rate swaps	`PaymentsForProceedsFromHedgeFinancingActivities`	$-171.15M	USD	Annual
Settlement of interest rate swaps	`PaymentsForProceedsFromHedgeFinancingActivities`	$-197.07M	USD	Annual
Proceeds from term loan	`ProceedsFromOtherDebt`	-	USD	Annual
Proceeds from term loan	`ProceedsFromOtherDebt`	$2.02B	USD	Annual
Proceeds from term loan	`ProceedsFromOtherDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfOtherDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfOtherDebt`	$2.02B	USD	Annual
Repayment of term loan	`RepaymentsOfOtherDebt`	-	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	-	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$200.00M	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$2.20B	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$323.90M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$375.91M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$430.35M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$7.86M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$14.29M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$8.20M	USD	Annual
Securitized debt issuance costs	`PaymentsOfSecuritizedDebtIssuanceCosts`	-	USD	Annual
Securitized debt issuance costs	`PaymentsOfSecuritizedDebtIssuanceCosts`	-	USD	Annual
Securitized debt issuance costs	`PaymentsOfSecuritizedDebtIssuanceCosts`	$1.27M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.74M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$1.39B	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$3.14B	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-696.77M	USD	Annual
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$95.92M	USD	Annual
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-65.17M	USD	Annual
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-32.31M	USD	Annual
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.55M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$20.81M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$19.25M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$116.72M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.55M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$20.81M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$19.25M	USD	Point-in-time
Cash and cash equivalents and restricted cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$116.72M	USD	Point-in-time

Stockholders Equity 39 line items

Line Item	Tag	Value	Unit	Period
Cash dividends per share (USD per share)	`CommonStockDividendsPerShareCashPaid`	$2.96	USD	Annual
Cash dividends per share (USD per share)	`CommonStockDividendsPerShareCashPaid`	$2.50	USD	Annual
Cash dividends per share (USD per share)	`CommonStockDividendsPerShareCashPaid`	$2.72	USD	Annual
Common stock shares outstanding, balance (in shares)	`CommonStockSharesOutstanding`	148.49M	shares	Point-in-time
Common stock shares outstanding, balance (in shares)	`CommonStockSharesOutstanding`	140.90M	shares	Point-in-time
Shareholders' equity, beginning balance	`StockholdersEquity`	$7.91B	USD	Point-in-time
Shareholders' equity, beginning balance	`StockholdersEquity`	$6.79B	USD	Point-in-time
Shareholders' equity, beginning balance	`StockholdersEquity`	$10.87B	USD	Point-in-time
Shareholders' equity, beginning balance	`StockholdersEquity`	$9.42B	USD	Point-in-time
Net income	`NetIncomeLoss`	$665.56M	USD	Annual
Net income	`NetIncomeLoss`	$885.86M	USD	Annual
Net income	`NetIncomeLoss`	$774.40M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$299.31M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$127.39M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$149.42M	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$323.90M	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$375.91M	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$430.35M	USD	Annual
Public offering	`StockIssuedDuringPeriodValueNewIssues`	$806.95M	USD	Annual
Public offering	`StockIssuedDuringPeriodValueNewIssues`	$776.80M	USD	Annual
Public offering	`StockIssuedDuringPeriodValueNewIssues`	$606.67M	USD	Annual
Direct stock purchase plan	`StockIssuedDuringPeriodValueOther`	$7.71M	USD	Annual
Direct stock purchase plan	`StockIssuedDuringPeriodValueOther`	$7.50M	USD	Annual
Direct stock purchase plan	`StockIssuedDuringPeriodValueOther`	$7.43M	USD	Annual
Retirement savings plan	`StockIssuedDuringPeriodValueEmployeeBenefitPlan`	$8.13M	USD	Annual
Retirement savings plan	`StockIssuedDuringPeriodValueEmployeeBenefitPlan`	$7.91M	USD	Annual
Retirement savings plan	`StockIssuedDuringPeriodValueEmployeeBenefitPlan`	$7.97M	USD	Annual
1998 Long-term incentive plan	`StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures`	$2.11M	USD	Annual
1998 Long-term incentive plan	`StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures`	$2.40M	USD	Annual
1998 Long-term incentive plan	`StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures`	$3.09M	USD	Annual
Employee stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$19.80M	USD	Annual
Employee stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$21.59M	USD	Annual
Employee stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$21.04M	USD	Annual
Common stock shares outstanding, ending balance (in shares)	`CommonStockSharesOutstanding`	148.49M	shares	Point-in-time
Common stock shares outstanding, ending balance (in shares)	`CommonStockSharesOutstanding`	140.90M	shares	Point-in-time
Shareholders' equity, ending balance	`StockholdersEquity`	$7.91B	USD	Point-in-time
Shareholders' equity, ending balance	`StockholdersEquity`	$6.79B	USD	Point-in-time
Shareholders' equity, ending balance	`StockholdersEquity`	$10.87B	USD	Point-in-time
Shareholders' equity, ending balance	`StockholdersEquity`	$9.42B	USD	Point-in-time

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