10-K Filing

ALLIANT ENERGY CORP CIK: 352541 FY 2021

Filing Information

Form Type	10-K
Accession Number	`0000352541-22-000020`
Period End Date	20211231
Filing Date	20220218
Fiscal Year	2021
Fiscal Period	FY
XBRL Instance	lnt-20211231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 93 Income Statement 81 Cash Flow Statement 104 Stockholders Equity 38

Balance Sheet 93 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	480.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	480.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$54.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$39.00M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	245.02M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	236.06M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	249.87M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	250.47M	shares	Point-in-time
Accounts receivable, less allowance for expected credit losses	`AccountsReceivableNetCurrent`	$412.00M	USD	Point-in-time
Accounts receivable, less allowance for expected credit losses	`AccountsReceivableNetCurrent`	$440.00M	USD	Point-in-time
Shares in deferred compensation trust (in shares)	`CommonStockHeldInTrustShares`	383,532.00	shares	Point-in-time
Shares in deferred compensation trust (in shares)	`CommonStockHeldInTrustShares`	380,542.00	shares	Point-in-time
Shares in deferred compensation trust, weighted average cost per share (in dollars per share)	`ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased`	$30.59	USD	Point-in-time
Shares in deferred compensation trust, weighted average cost per share (in dollars per share)	`ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased`	$28.73	USD	Point-in-time
Production fuel, at weighted average cost	`EnergyRelatedInventoryOtherFossilFuel`	$66.00M	USD	Point-in-time
Production fuel, at weighted average cost	`EnergyRelatedInventoryOtherFossilFuel`	$51.00M	USD	Point-in-time
Gas stored underground, at weighted average cost	`EnergyRelatedInventoryGasStoredUnderground`	$82.00M	USD	Point-in-time
Gas stored underground, at weighted average cost	`EnergyRelatedInventoryGasStoredUnderground`	$46.00M	USD	Point-in-time
Materials and supplies, at weighted average cost	`InventoryRawMaterialsAndSupplies`	$105.00M	USD	Point-in-time
Materials and supplies, at weighted average cost	`InventoryRawMaterialsAndSupplies`	$113.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsCurrent`	$81.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsCurrent`	$104.00M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$240.00M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$123.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$887.00M	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$14.99B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$14.34B	USD	Point-in-time
ATC Holdings	`InvestmentsBusinessLine1`	$331.00M	USD	Point-in-time
ATC Holdings	`InvestmentsBusinessLine1`	$338.00M	USD	Point-in-time
Other	`OtherLongTermInvestments`	$154.00M	USD	Point-in-time
Other	`OtherLongTermInvestments`	$179.00M	USD	Point-in-time
Total investments	`LongTermInvestments`	$485.00M	USD	Point-in-time
Total investments	`LongTermInvestments`	$517.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.84B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.93B	USD	Point-in-time
Deferred charges and other	`DeferredCosts`	$144.00M	USD	Point-in-time
Deferred charges and other	`DeferredCosts`	$73.00M	USD	Point-in-time
Total other assets	`OtherAssetsNoncurrent`	$1.98B	USD	Point-in-time
Total other assets	`OtherAssetsNoncurrent`	$2.00B	USD	Point-in-time
Total assets	`Assets`	$18.55B	USD	Point-in-time
Total assets	`Assets`	$17.71B	USD	Point-in-time
Total assets	`Assets`	$16.70B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$633.00M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$8.00M	USD	Point-in-time
Commercial paper	`CommercialPaper`	$389.00M	USD	Point-in-time
Commercial paper	`CommercialPaper`	$515.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$377.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$436.00M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$58.00M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$67.00M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityCurrent`	$186.00M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityCurrent`	$249.00M	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$226.00M	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$207.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.05B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.30B	USD	Point-in-time
Long-term debt, net (excluding current portion)	`LongTermDebtNoncurrent`	$6.77B	USD	Point-in-time
Long-term debt, net (excluding current portion)	`LongTermDebtNoncurrent`	$6.74B	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$1.93B	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$1.81B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$1.06B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$1.08B	USD	Point-in-time
Pension and other benefit obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$374.00M	USD	Point-in-time
Pension and other benefit obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$511.00M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$374.00M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$388.00M	USD	Point-in-time
Total other liabilities	`DeferredCreditsAndOtherLiabilities`	$3.76B	USD	Point-in-time
Total other liabilities	`DeferredCreditsAndOtherLiabilities`	$3.77B	USD	Point-in-time
Commitments and contingencies (Note 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock	`CommonStockValue`	$3.00M	USD	Point-in-time
Common stock	`CommonStockValue`	$2.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.70B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$2.75B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.25B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.99B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-1.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	-	USD	Point-in-time
Shares in deferred compensation trust - 383,532 and 380,542 shares at a weighted average cost of $30.59 and $28.73 per share	`CommonStockHeldInTrust`	$11.00M	USD	Point-in-time
Shares in deferred compensation trust - 383,532 and 380,542 shares at a weighted average cost of $30.59 and $28.73 per share	`CommonStockHeldInTrust`	$12.00M	USD	Point-in-time
Total common equity	`StockholdersEquity`	$5.99B	USD	Point-in-time
Total common equity	`StockholdersEquity`	$5.69B	USD	Point-in-time
Cumulative preferred stock of Interstate Power and Light Company	`MinorityInterestAmountRepresentedByPreferredStock`	-	USD	Point-in-time
Cumulative preferred stock of Interstate Power and Light Company	`MinorityInterestAmountRepresentedByPreferredStock`	$200.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.99B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.41B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$18.55B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$17.71B	USD	Point-in-time

Income Statement 81 line items

Line Item	Tag	Value	Unit	Period
Electric utility	`RegulatedOperatingRevenueElectricNonNuclear`	$3.06B	USD	Annual
Electric utility	`RegulatedOperatingRevenueElectricNonNuclear`	$2.92B	USD	Annual
Electric utility	`RegulatedOperatingRevenueElectricNonNuclear`	$3.08B	USD	Annual
Gas utility	`RegulatedOperatingRevenueGas`	$456.00M	USD	Annual
Gas utility	`RegulatedOperatingRevenueGas`	$455.00M	USD	Annual
Gas utility	`RegulatedOperatingRevenueGas`	$373.00M	USD	Annual
Other utility	`RegulatedOperatingRevenueOther`	$46.00M	USD	Annual
Other utility	`RegulatedOperatingRevenueOther`	$49.00M	USD	Annual
Other utility	`RegulatedOperatingRevenueOther`	$49.00M	USD	Annual
Non-utility	`UnregulatedOperatingRevenue`	$74.00M	USD	Annual
Non-utility	`UnregulatedOperatingRevenue`	$83.00M	USD	Annual
Non-utility	`UnregulatedOperatingRevenue`	$83.00M	USD	Annual
Total revenues	`Revenues`	$3.67B	USD	Annual
Total revenues	`Revenues`	$3.65B	USD	Annual
Total revenues	`Revenues`	$3.42B	USD	Annual
Electric production fuel and purchased power	`UtilitiesOperatingExpenseFuelUsed`	$777.00M	USD	Annual
Electric production fuel and purchased power	`UtilitiesOperatingExpenseFuelUsed`	$652.00M	USD	Annual
Electric production fuel and purchased power	`UtilitiesOperatingExpenseFuelUsed`	$642.00M	USD	Annual
Electric transmission service	`CostOfGoodsAndServicesSold`	$537.00M	USD	Annual
Electric transmission service	`CostOfGoodsAndServicesSold`	$449.00M	USD	Annual
Electric transmission service	`CostOfGoodsAndServicesSold`	$481.00M	USD	Annual
Cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$182.00M	USD	Annual
Cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$222.00M	USD	Annual
Cost of gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$258.00M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$712.00M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$676.00M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$670.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$615.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$657.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$567.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$104.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$111.00M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$108.00M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.68B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.87B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$2.87B	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$795.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$778.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$740.00M	USD	Annual
Interest expense	`InterestExpense`	$277.00M	USD	Annual
Interest expense	`InterestExpense`	$273.00M	USD	Annual
Interest expense	`InterestExpense`	$275.00M	USD	Annual
Equity income from unconsolidated investments, net	`IncomeLossFromEquityMethodInvestments`	$53.00M	USD	Annual
Equity income from unconsolidated investments, net	`IncomeLossFromEquityMethodInvestments`	$61.00M	USD	Annual
Equity income from unconsolidated investments, net	`IncomeLossFromEquityMethodInvestments`	$62.00M	USD	Annual
Allowance for funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$55.00M	USD	Annual
Allowance for funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$93.00M	USD	Annual
Allowance for funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$25.00M	USD	Annual
Other	`OtherNonoperatingIncomeExpense`	$-5.00M	USD	Annual
Other	`OtherNonoperatingIncomeExpense`	$-15.00M	USD	Annual
Other	`OtherNonoperatingIncomeExpense`	$-14.00M	USD	Annual
Total other (income) and deductions	`NonoperatingIncomeExpense`	$-195.00M	USD	Annual
Total other (income) and deductions	`NonoperatingIncomeExpense`	$-173.00M	USD	Annual
Total other (income) and deductions	`NonoperatingIncomeExpense`	$-142.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$567.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$636.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$600.00M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$69.00M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-57.00M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-74.00M	USD	Annual
Net income	`NetIncomeLoss`	$624.00M	USD	Annual
Net income	`NetIncomeLoss`	$674.00M	USD	Annual
Net income	`NetIncomeLoss`	$567.00M	USD	Annual
Preferred dividend requirements of Interstate Power and Light Company	`DividendsPreferredStock`	$15.00M	USD	Annual
Preferred dividend requirements of Interstate Power and Light Company	`DividendsPreferredStock`	$10.00M	USD	Annual
Preferred dividend requirements of Interstate Power and Light Company	`DividendsPreferredStock`	$10.00M	USD	Annual
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$659.00M	USD	Annual
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$614.00M	USD	Annual
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$557.00M	USD	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	238.50M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	248.40M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	250.20M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	248.70M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	250.70M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	239.00M	shares	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.47	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.34	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.63	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.63	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.33	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.47	USD	Annual

Cash Flow Statement 104 line items

Line Item	Tag	Value	Unit	Period
Net income	`NetIncomeLoss`	$624.00M	USD	Annual
Net income	`NetIncomeLoss`	$674.00M	USD	Annual
Net income	`NetIncomeLoss`	$567.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$615.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$657.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$567.00M	USD	Annual
Deferred tax expense (benefit) and tax credits	`DeferredIncomeTaxesAndTaxCredits`	$-78.00M	USD	Annual
Deferred tax expense (benefit) and tax credits	`DeferredIncomeTaxesAndTaxCredits`	$56.00M	USD	Annual
Deferred tax expense (benefit) and tax credits	`DeferredIncomeTaxesAndTaxCredits`	$-66.00M	USD	Annual
Equity component of allowance for funds used during construction	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$66.00M	USD	Annual
Equity component of allowance for funds used during construction	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$39.00M	USD	Annual
Equity component of allowance for funds used during construction	`IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction`	$18.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-20.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-35.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-37.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$472.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$468.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$530.00M	USD	Annual
Derivative assets	`IncreaseDecreaseInDerivativeAssets`	$-2.00M	USD	Annual
Derivative assets	`IncreaseDecreaseInDerivativeAssets`	$7.00M	USD	Annual
Derivative assets	`IncreaseDecreaseInDerivativeAssets`	$142.00M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$130.00M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$16.00M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-51.00M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-40.00M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-66.00M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-113.00M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-171.00M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-193.00M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-54.00M	USD	Annual
Pension and other benefit obligations	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-25.00M	USD	Annual
Pension and other benefit obligations	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-137.00M	USD	Annual
Pension and other benefit obligations	`IncreaseDecreaseInPensionAndPostretirementObligations`	$27.00M	USD	Annual
DAEC PPA amendment buyout payment	`IncreaseDecreaseInOtherCurrentLiabilities`	-	USD	Annual
DAEC PPA amendment buyout payment	`IncreaseDecreaseInOtherCurrentLiabilities`	-	USD	Annual
DAEC PPA amendment buyout payment	`IncreaseDecreaseInOtherCurrentLiabilities`	$-110.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$57.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-13.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$40.00M	USD	Annual
Net cash flows from (used for) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$582.00M	USD	Annual
Net cash flows from (used for) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$501.00M	USD	Annual
Net cash flows from (used for) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$660.00M	USD	Annual
Utility construction and acquisition expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$1.29B	USD	Annual
Utility construction and acquisition expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$1.54B	USD	Annual
Utility construction and acquisition expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$1.07B	USD	Annual
Other construction and acquisition expenditures	`PaymentsToAcquireOtherProductiveAssets`	$73.00M	USD	Annual
Other construction and acquisition expenditures	`PaymentsToAcquireOtherProductiveAssets`	$99.00M	USD	Annual
Other construction and acquisition expenditures	`PaymentsToAcquireOtherProductiveAssets`	$101.00M	USD	Annual
Cash receipts on sold receivables	`ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables`	$413.00M	USD	Annual
Cash receipts on sold receivables	`ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables`	$502.00M	USD	Annual
Cash receipts on sold receivables	`ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables`	$458.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$61.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$43.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$60.00M	USD	Annual
Net cash flows from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.29B	USD	Annual
Net cash flows from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-728.00M	USD	Annual
Net cash flows from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-951.00M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$377.00M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$337.00M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$403.00M	USD	Annual
Proceeds from issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$28.00M	USD	Annual
Proceeds from issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$390.00M	USD	Annual
Proceeds from issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$247.00M	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	$200.00M	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$950.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$600.00M	USD	Annual
Proceeds from issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$1.25B	USD	Annual
Payments to retire long-term debt	`RepaymentsOfLongTermDebt`	$256.00M	USD	Annual
Payments to retire long-term debt	`RepaymentsOfLongTermDebt`	$657.00M	USD	Annual
Payments to retire long-term debt	`RepaymentsOfLongTermDebt`	$8.00M	USD	Annual
Net change in commercial paper	`ProceedsFromRepaymentsOfShortTermDebt`	$52.00M	USD	Annual
Net change in commercial paper	`ProceedsFromRepaymentsOfShortTermDebt`	$126.00M	USD	Annual
Net change in commercial paper	`ProceedsFromRepaymentsOfShortTermDebt`	$-104.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-27.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-24.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-13.00M	USD	Annual
Net cash flows from (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$130.00M	USD	Annual
Net cash flows from (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$619.00M	USD	Annual
Net cash flows from (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$488.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-8.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-16.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$38.00M	USD	Annual
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$26.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$18.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$56.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$26.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$18.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$56.00M	USD	Point-in-time
Interest	`InterestPaidNet`	$272.00M	USD	Annual
Interest	`InterestPaidNet`	$274.00M	USD	Annual
Interest	`InterestPaidNet`	$268.00M	USD	Annual
Income taxes, net	`IncomeTaxesPaidNet`	$-5.00M	USD	Annual
Income taxes, net	`IncomeTaxesPaidNet`	$3.00M	USD	Annual
Income taxes, net	`IncomeTaxesPaidNet`	$-21.00M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$131.00M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$196.00M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$141.00M	USD	Annual
Beneficial interest obtained in exchange for securitized accounts receivable	`ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset`	$214.00M	USD	Annual
Beneficial interest obtained in exchange for securitized accounts receivable	`ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset`	$188.00M	USD	Annual
Beneficial interest obtained in exchange for securitized accounts receivable	`ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset`	$188.00M	USD	Annual

Stockholders Equity 38 line items

Line Item	Tag	Value	Unit	Period
Common stock dividends (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$1.42	USD	Annual
Common stock dividends (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$1.61	USD	Annual
Common stock dividends (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$1.52	USD	Annual
Beginning balance	`StockholdersEquity`	$5.99B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$5.69B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.99B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.41B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$659.00M	USD	Annual
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$614.00M	USD	Annual
Net income attributable to common shareowners	`NetIncomeLossAvailableToCommonStockholdersBasic`	$557.00M	USD	Annual
Net income	`NetIncomeLoss`	$624.00M	USD	Annual
Net income	`NetIncomeLoss`	$674.00M	USD	Annual
Net income	`NetIncomeLoss`	$567.00M	USD	Annual
Common stock dividends	`DividendsCommonStock`	$403.00M	USD	Annual
Common stock dividends	`DividendsCommonStock`	$337.00M	USD	Annual
Common stock dividends	`DividendsCommonStock`	$377.00M	USD	Annual
Equity forward settlements and Shareowner Direct Plan issuances	`ProceedsFromIssuanceOfCommonStock`	$28.00M	USD	Annual
Equity forward settlements and Shareowner Direct Plan issuances	`ProceedsFromIssuanceOfCommonStock`	$390.00M	USD	Annual
Equity forward settlements and Shareowner Direct Plan issuances	`ProceedsFromIssuanceOfCommonStock`	$247.00M	USD	Annual
Equity-based compensation plans and other	`StockholdersEquityOther`	$-17.00M	USD	Annual
Equity-based compensation plans and other	`StockholdersEquityOther`	$-10.00M	USD	Annual
Equity-based compensation plans and other	`StockholdersEquityOther`	$-10.00M	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	$200.00M	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Payments to redeem cumulative preferred stock of IPL	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Adoption of new accounting standard, net of tax	`RetainedEarningsAccumulatedDeficit`	$3.25B	USD	Point-in-time
Adoption of new accounting standard, net of tax	`RetainedEarningsAccumulatedDeficit`	$2.99B	USD	Point-in-time
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.00M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.00M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	Annual
Ending balance	`StockholdersEquity`	$5.99B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$5.69B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.79B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.99B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.41B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time

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