$LNT
ALLIANT ENERGY CORP Stock $lnt

$lnt Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000035254123000017 Filed on February 24, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$1.077B	$1.058B	$4.205B
YoY Change	0.84%	14.13%	14.61%
Cost Of Revenue	$146.0M	$147.0M	$573.0M
YoY Change	-13.1%	34.86%	6.7%
Gross Profit	$931.0M	$911.0M	$3.632B
YoY Change	3.44%	11.37%	15.96%
Gross Profit Margin	86.44%	86.11%	86.37%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$166.0M	$170.0M	$671.0M
YoY Change	0.0%	4.29%	2.13%
% of Gross Profit	17.83%	18.66%	18.47%
Operating Expenses	$674.0M	$752.0M	$2.888B
YoY Change	3.37%	9.62%	10.4%
Operating Profit	$222.0M	$159.0M	$928.0M
YoY Change	-10.48%	20.45%	16.73%
Interest Expense	$94.00M	-$50.00M	$325.0M
YoY Change	-295.83%	6.38%	17.33%
% of Operating Profit	42.34%	-31.45%	35.02%
Other Income/Expense, Net	-$61.00M	-$6.000M	-$220.0M
YoY Change		-400.0%	12.82%
Pretax Income	$161.0M	$103.0M	$708.0M
YoY Change	-19.5%	18.39%	18.0%
Income Tax	-$2.000M	-$4.000M	$22.00M
% Of Pretax Income	-1.24%	-3.88%	3.11%
Net Earnings	$163.0M	$107.0M	$686.0M
YoY Change	-15.1%	12.63%	1.78%
Net Earnings / Revenue	15.13%	10.11%	16.31%
Basic Earnings Per Share	$0.65		$2.73
Diluted Earnings Per Share	$0.65	$0.43	$2.73
COMMON SHARES
Basic Shares Outstanding	251.1M shares		250.9M shares
Diluted Shares Outstanding	251.4M shares		251.2M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$157.0M	$20.00M	$20.00M
YoY Change	134.33%	-48.72%	-48.72%
Cash & Equivalents	$157.0M	$20.00M	$20.00M
Short-Term Investments
Other Short-Term Assets	$132.0M	$223.0M	$504.0M
YoY Change	-63.23%	-7.08%	15.86%
Inventory	$282.0M	$325.0M	$325.0M
Prepaid Expenses
Receivables	$428.0M	$516.0M	$107.0M
Other Receivables	$0.00	$0.00	$294.0M
Total Short-Term Assets	$1.192B	$1.250B	$1.250B
YoY Change	9.16%	16.93%	16.93%
LONG-TERM ASSETS
Property, Plant & Equipment	$16.40B	$16.25B	$16.25B
YoY Change	7.93%	8.41%	8.41%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$569.0M	$542.0M	$559.0M
YoY Change	6.75%	6.69%	8.12%
Other Assets	$2.083B	$2.107B	$2.107B
YoY Change	3.02%	6.41%	6.41%
Total Long-Term Assets	$19.05B	$18.91B	$18.91B
YoY Change	7.33%	8.17%	8.17%
TOTAL ASSETS
Total Short-Term Assets	$1.192B	$1.250B	$1.250B
Total Long-Term Assets	$19.05B	$18.91B	$18.91B
Total Assets	$20.24B	$20.16B	$20.16B
YoY Change	7.44%	8.68%	8.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$518.0M	$756.0M	$756.0M
YoY Change	35.25%	73.39%	73.39%
Accrued Expenses			$3.000M
YoY Change			50.0%
Deferred Revenue
YoY Change
Short-Term Debt	$60.00M	$642.0M	$642.0M
YoY Change	-78.26%	24.66%	24.66%
Long-Term Debt Due	$808.0M	$408.0M	$413.0M
YoY Change	142.64%	-35.55%	-34.86%
Total Short-Term Liabilities	$1.908B	$2.363B	$2.363B
YoY Change	25.44%	15.04%	15.04%
LONG-TERM LIABILITIES
Long-Term Debt	$8.132B	$7.668B	$7.799B
YoY Change	10.14%	13.85%	15.61%
Other Long-Term Liabilities	$540.0M	$518.0M	$1.782B
YoY Change	-71.58%	33.51%	-2.94%
Total Long-Term Liabilities	$8.672B	$8.186B	$9.581B
YoY Change	-6.58%	14.92%	11.64%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.908B	$2.363B	$2.363B
Total Long-Term Liabilities	$8.672B	$8.186B	$9.581B
Total Liabilities	$10.58B	$10.55B	$13.89B
YoY Change	-17.1%	14.95%	10.54%
SHAREHOLDERS EQUITY
Retained Earnings	$3.559B	$3.509B
YoY Change		7.97%
Common Stock	$2.783B	$2.780B
YoY Change		1.02%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.328B	$6.276B	$6.276B
YoY Change
Total Liabilities & Shareholders Equity	$20.24B	$20.16B	$20.16B
YoY Change	7.44%	8.68%	8.68%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$163.0M	$107.0M	$686.0M
YoY Change	-15.1%	12.63%	1.78%
Depreciation, Depletion And Amortization	$166.0M	$170.0M	$671.0M
YoY Change	0.0%	4.29%	2.13%
Cash From Operating Activities	$188.0M	$1.000M	$486.0M
YoY Change	-25.1%	-99.05%	-16.49%
INVESTING ACTIVITIES
Capital Expenditures	$417.0M	$519.0M	$1.484B
YoY Change	-235.83%	-274.16%	26.95%
Acquisitions
YoY Change
Other Investing Activities	$10.00M	$185.0M	$47.00M
YoY Change	-88.1%	740.91%	-22.95%
Cash From Investing Activities	-$263.0M	-$334.0M	-$933.0M
YoY Change	17.94%	21.01%	28.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$25.00M
YoY Change			-10.71%
Debt Paid & Issued, Net	$0.00		$633.0M
YoY Change	-100.0%		7812.5%
Cash From Financing Activities	$212.0M	10.00M	$431.0M
YoY Change	6966.67%	-94.65%	231.54%
NET CHANGE
Cash From Operating Activities	$188.0M	1.000M	$486.0M
Cash From Investing Activities	-$263.0M	-334.0M	-$933.0M
Cash From Financing Activities	$212.0M	10.00M	$431.0M
Net Change In Cash	$137.0M	-323.0M	-$16.00M
YoY Change	341.94%	-2118.75%	0.0%
FREE CASH FLOW
Cash From Operating Activities	$188.0M	$1.000M	$486.0M
Capital Expenditures	$417.0M	$519.0M	$1.484B
Free Cash Flow	-$229.0M	-$518.0M	-$998.0M
YoY Change	-141.04%	-228.54%	70.02%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000352541
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentNet
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CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesCurrent
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesNoncurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesNoncurrent
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentNet
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentNet
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesCurrent
CY2022Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesNoncurrent
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#OtherLiabilitiesNoncurrent
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity Registrant Name EntityRegistrantName	ALLIANT ENERGY CORP
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WI
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	4902 N. Biltmore Lane
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Madison
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	WI
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	53718
CY2022	dei	City Area Code CityAreaCode	608
CY2022	dei	Local Phone Number LocalPhoneNumber	458-3311
CY2022	dei	Entity File Number EntityFileNumber	1-9894
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	39-1380265
CY2022	dei	Security12b Title Security12bTitle	Common Stock, $0.01 Par Value
CY2022	dei	Trading Symbol TradingSymbol	LNT
CY2022	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	14700000000	usd
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	251137522	shares
CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	2046000000	usd
CY2022Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1324000000	usd
CY2022	dei	Auditor Name AuditorName	DELOITTE & TOUCHE LLP
CY2022	dei	Auditor Location AuditorLocation	Milwaukee, Wisconsin
CY2022	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	3421000000	usd
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CY2020	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	2920000000	usd
CY2022	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	642000000	usd
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CY2020	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	373000000	usd
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CY2021	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	83000000	usd
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CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	60000000	usd
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CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	408000000	usd
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	633000000	usd
CY2022Q4	us-gaap	Commercial Paper CommercialPaper	642000000	usd
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CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	186000000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	351000000	usd
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	284000000	usd
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CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2054000000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7668000000	usd
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6735000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1943000000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1927000000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1118000000	usd
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1085000000	usd
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	277000000	usd
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	374000000	usd
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CY2022Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	3856000000	usd
CY2021Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	3774000000	usd
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CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	480000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	480000000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	251134966	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	250474529	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	3000000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	3000000	usd
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CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2749000000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3509000000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3250000000	usd
CY2022Q4	lnt	Common Stock Held In Trust Shares CommonStockHeldInTrustShares	402134	shares
CY2021Q4	lnt	Common Stock Held In Trust Shares CommonStockHeldInTrustShares	383532	shares
CY2022Q4	lnt	Common Stock Held In Trust Weighted Average Value Per Share CommonStockHeldInTrustWeightedAverageValuePerShare	32.63
CY2021Q4	lnt	Common Stock Held In Trust Weighted Average Value Per Share CommonStockHeldInTrustWeightedAverageValuePerShare	30.59
CY2022Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	13000000	usd
CY2021Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	12000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6276000000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	5990000000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	20163000000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18553000000	usd
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CY2021	us-gaap	Net Income Loss NetIncomeLoss	674000000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	624000000	usd
CY2021	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	142000000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	671000000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	657000000	usd
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CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-78000000	usd
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CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-17000000	usd
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2000000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	672000000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	530000000	usd
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	468000000	usd
CY2022	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	108000000	usd
CY2021	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-51000000	usd
CY2020	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	130000000	usd
CY2022	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	61000000	usd
CY2020	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	7000000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	78000000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	37000000	usd
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-3000000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	22000000	usd
CY2021	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-66000000	usd
CY2020	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-113000000	usd
CY2022	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	70000000	usd
CY2021	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	-17000000	usd
CY2020	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	-12000000	usd
CY2022	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-4000000	usd
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-193000000	usd
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CY2022	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-97000000	usd
CY2021	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-137000000	usd
CY2020	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	27000000	usd
CY2022	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	0	usd
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	0	usd
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-110000000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	102000000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	77000000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	25000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	486000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	582000000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	501000000	usd
CY2022	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	1392000000	usd
CY2021	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	1070000000	usd
CY2020	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	1293000000	usd
CY2022	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	92000000	usd
CY2021	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	99000000	usd
CY2020	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	73000000	usd
CY2022	us-gaap	Proceeds From Collection Of Retained Interest In Securitized Receivables ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables	598000000	usd
CY2021	us-gaap	Proceeds From Collection Of Retained Interest In Securitized Receivables ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables	502000000	usd
CY2020	us-gaap	Proceeds From Collection Of Retained Interest In Securitized Receivables ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables	458000000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	47000000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	61000000	usd
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	43000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-933000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-728000000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-951000000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	428000000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	403000000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	377000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	25000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	28000000	usd
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	247000000	usd
CY2022	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	200000000	usd
CY2020	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1338000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	600000000	usd
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1250000000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	633000000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8000000	usd
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CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	127000000	usd
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	126000000	usd
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	52000000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	29000000	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	usd
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CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	29000000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	usd
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CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2000000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-13000000	usd
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-27000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	431000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	130000000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	488000000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16000000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16000000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	38000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	40000000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	56000000	usd
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CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	24000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	40000000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	56000000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	311000000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	272000000	usd
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CY2022	us-gaap	Consideration Received For Beneficial Interest Obtained For Transferring Financial Asset ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset	185000000	usd
CY2021	us-gaap	Consideration Received For Beneficial Interest Obtained For Transferring Financial Asset ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset	214000000	usd
CY2020	us-gaap	Consideration Received For Beneficial Interest Obtained For Transferring Financial Asset ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset	188000000	usd
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CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.52
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	377000000	usd
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	247000000	usd
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-10000000	usd
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CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5888000000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	659000000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.61
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	403000000	usd
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CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-17000000	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	200000000	usd
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CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	686000000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.71
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	428000000	usd
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CY2022	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Certain prior period amounts in the Financial Statements and Notes have been reclassified to conform to the current period presentation for comparative purposes.
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CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	2046000000	usd
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CY2021Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	1271000000	usd
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CY2022Q4	lnt	Public Utilities Property Plant And Equipment Electric PublicUtilitiesPropertyPlantAndEquipmentElectric	17618000000	usd
CY2021Q4	lnt	Public Utilities Property Plant And Equipment Electric PublicUtilitiesPropertyPlantAndEquipmentElectric	16710000000	usd
CY2022Q4	lnt	Public Utilities Property Plant And Equipment Gas PublicUtilitiesPropertyPlantAndEquipmentGas	1705000000	usd
CY2021Q4	lnt	Public Utilities Property Plant And Equipment Gas PublicUtilitiesPropertyPlantAndEquipmentGas	1636000000	usd
CY2022Q4	lnt	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	624000000	usd
CY2021Q4	lnt	Public Utilities Property Plant And Equipment General PublicUtilitiesPropertyPlantAndEquipmentGeneral	621000000	usd
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CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	5263000000	usd
CY2022Q4	lnt	Net Utility Plant NetUtilityPlant	14257000000	usd
CY2021Q4	lnt	Net Utility Plant NetUtilityPlant	13704000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	133000000	usd
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CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1357000000	usd
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	778000000	usd
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CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	7000000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	15753000000	usd
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	14500000000	usd
CY2022Q4	lnt	Property Plant And Equipment Nonregulated Business Line1 PropertyPlantAndEquipmentNonregulatedBusinessLine1	71000000	usd
CY2021Q4	lnt	Property Plant And Equipment Nonregulated Business Line1 PropertyPlantAndEquipmentNonregulatedBusinessLine1	75000000	usd
CY2022Q4	lnt	Property Plant And Equipment Nonregulated Business Line2 PropertyPlantAndEquipmentNonregulatedBusinessLine2	423000000	usd
CY2021Q4	lnt	Property Plant And Equipment Nonregulated Business Line2 PropertyPlantAndEquipmentNonregulatedBusinessLine2	412000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	494000000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	487000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16247000000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	14987000000	usd
CY2022Q4	lnt	Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1 AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1	71000000	usd
CY2021Q4	lnt	Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1 AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1	67000000	usd
CY2022Q4	lnt	Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2 AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2	269000000	usd
CY2021Q4	lnt	Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2 AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2	245000000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	60000000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	25000000	usd
CY2020	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	55000000	usd
CY2022Q4	us-gaap	Jointly Owned Utility Plant Gross Ownership Amount Of Plant In Service JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService	2663000000	usd
CY2022Q4	us-gaap	Jointly Owned Utility Plant Ownership Amount Of Plant Accumulated Depreciation JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation	886000000	usd
CY2022Q4	us-gaap	Jointly Owned Utility Plant Ownership Amount Of Construction Work In Progress JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress	42000000	usd
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CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	93000000	usd
CY2022Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	115000000	usd
CY2021Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	91000000	usd
CY2022Q4	lnt	Fair Value Of Deferred Proceeds Of Receivables Sold FairValueOfDeferredProceedsOfReceivablesSold	185000000	usd
CY2021Q4	lnt	Fair Value Of Deferred Proceeds Of Receivables Sold FairValueOfDeferredProceedsOfReceivablesSold	214000000	usd
CY2022Q4	us-gaap	Other Receivables OtherReceivables	109000000	usd
CY2021Q4	us-gaap	Other Receivables OtherReceivables	53000000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7000000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11000000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	516000000	usd
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	440000000	usd
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	250474529	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	249868415	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	245022800	shares
CY2022	lnt	Shares Of Stock Issued Shareowner Direct Plan SharesOfStockIssuedShareownerDirectPlan	437669	shares
CY2021	lnt	Shares Of Stock Issued Shareowner Direct Plan SharesOfStockIssuedShareownerDirectPlan	492565	shares
CY2020	lnt	Shares Of Stock Issued Shareowner Direct Plan SharesOfStockIssuedShareownerDirectPlan	472283	shares
CY2022	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	222768	shares
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	113549	shares
CY2020	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	98205	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	251134966	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	250474529	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	249868415	shares
CY2022Q4	lnt	Shares Available For Issuance Pursuant To Various Plans SharesAvailableForIssuancePursuantToVariousPlans	13000000	shares
CY2022Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1000000000	usd
CY2022Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1000000000	usd
CY2022Q4	us-gaap	Commercial Paper CommercialPaper	642000000	usd
CY2021Q4	us-gaap	Commercial Paper CommercialPaper	515000000	usd
CY2022Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.046
CY2021Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.002
CY2022Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	358000000	usd
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	485000000	usd
CY2022	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	665000000	usd
CY2021	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	648000000	usd
CY2022	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	411000000	usd
CY2021	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	459000000	usd
CY2022	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.021
CY2021	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.002
CY2022Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	8143000000	usd
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	7425000000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	408000000	usd
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	633000000	usd
CY2022Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	45000000	usd
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	42000000	usd
CY2022Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	22000000	usd
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	15000000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7668000000	usd
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6735000000	usd
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	408000000	usd
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	909000000	usd
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	300000000	usd
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	200000000	usd
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	300000000	usd
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CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	16000000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	14000000	usd
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2022Q4	us-gaap	Lessee Operating Lease Discount Rate LesseeOperatingLeaseDiscountRate	0.04
CY2021Q4	us-gaap	Lessee Operating Lease Discount Rate LesseeOperatingLeaseDiscountRate	0.04
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	133000000	usd
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	11000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	5000000	usd
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	131000000	usd
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	11000000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	136000000	usd
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12000000	usd
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P34Y
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P34Y
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.05
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.03
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CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	0	usd
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	0	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3000000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	usd
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	usd
CY2022	us-gaap	Lease Cost LeaseCost	3000000	usd
CY2021	us-gaap	Lease Cost LeaseCost	0	usd
CY2020	us-gaap	Lease Cost LeaseCost	0	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	125000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	20000000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4000000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	16000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	5000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	6000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	6000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	6000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	6000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	262000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	291000000	usd
CY2022Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	155000000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	136000000	usd
CY2022	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	93000000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4205000000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3669000000	usd
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3416000000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7000000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1000000	usd
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1000000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000000	usd
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CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	109000000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	9000000	usd
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CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	28000000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	15000000	usd
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8000000	usd
CY2022	lnt	Production Tax Credits Net Of State Tax Impacts ProductionTaxCreditsNetOfStateTaxImpacts	123000000	usd
CY2021	lnt	Production Tax Credits Net Of State Tax Impacts ProductionTaxCreditsNetOfStateTaxImpacts	101000000	usd
CY2020	lnt	Production Tax Credits Net Of State Tax Impacts ProductionTaxCreditsNetOfStateTaxImpacts	95000000	usd
CY2022	us-gaap	Investment Tax Credit InvestmentTaxCredit	1000000	usd
CY2021	us-gaap	Investment Tax Credit InvestmentTaxCredit	1000000	usd
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CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-74000000	usd
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CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2022	lnt	Statute Of Limitations Expiration Period From Extended Due Date Of Federal Tax Return StatuteOfLimitationsExpirationPeriodFromExtendedDueDateOfFederalTaxReturn	P3Y
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.18
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.17
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.17
CY2022	lnt	Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes	-0.02
CY2021	lnt	Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes	-0.18
CY2020	lnt	Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes	-0.13
CY2022	lnt	Effective Income Tax Rate Reconciliation Effect Of Rate Making On Property Related Differences EffectiveIncomeTaxRateReconciliationEffectOfRateMakingOnPropertyRelatedDifferences	-0.01
CY2021	lnt	Effective Income Tax Rate Reconciliation Effect Of Rate Making On Property Related Differences EffectiveIncomeTaxRateReconciliationEffectOfRateMakingOnPropertyRelatedDifferences	-0.01
CY2020	lnt	Effective Income Tax Rate Reconciliation Effect Of Rate Making On Property Related Differences EffectiveIncomeTaxRateReconciliationEffectOfRateMakingOnPropertyRelatedDifferences	-0.03
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.01
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.01
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.01
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.03
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.12
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.10
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2442000000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2389000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	155000000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	111000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	2722000000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	2623000000	usd
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CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	560000000	usd
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CY2022	lnt	Statuteof Limitations Expiration Periodfrom Extended Due Dateof Wisconsin Tax Return StatuteofLimitationsExpirationPeriodfromExtendedDueDateofWisconsinTaxReturn	P4Y
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CY2021Q4	lnt	Defined Benefit Pension And Other Postretirement Benefits Plans Total Plan Assets Percentage On Common Stock DefinedBenefitPensionAndOtherPostretirementBenefitsPlansTotalPlanAssetsPercentageOnCommonStock	0.01
CY2022Q4	lnt	Common Stock Percentage In Assets Held Saving Plans CommonStockPercentageInAssetsHeldSavingPlans	0.10
CY2021Q4	lnt	Common Stock Percentage In Assets Held Saving Plans CommonStockPercentageInAssetsHeldSavingPlans	0.09
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CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14000000	usd
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CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3000000	usd
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CY2021	lnt	Carrying Value Of Deferred Compensation CarryingValueOfDeferredCompensation	12000000	usd
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CY2021	lnt	Fair Market Value Of Deferred Compensation FairMarketValueOfDeferredCompensation	24000000	usd
CY2022	lnt	Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts	19000000	usd
CY2021	lnt	Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts	22000000	usd
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	294000000	usd
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	251000000	usd
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CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	50000000	usd
CY2022	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	48000000	usd
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	17000000	usd
CY2022	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	6000000	usd
CY2021	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3000000	usd
CY2022	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	8000000	usd
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	7000000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	279000000	usd
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	294000000	usd
CY2022Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	10000000	usd
CY2021Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	32000000	usd
CY2022Q4	lnt	Fair Value Of Deferred Proceeds Of Receivables Sold FairValueOfDeferredProceedsOfReceivablesSold	185000000	usd
CY2021Q4	lnt	Fair Value Of Deferred Proceeds Of Receivables Sold FairValueOfDeferredProceedsOfReceivablesSold	214000000	usd
CY2022Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	7339000000	usd
CY2021Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	8330000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-74000000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	659000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	719000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	373000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	230000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	148000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	90000000	usd
CY2022Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	233000000	usd
CY2022Q4	us-gaap	Purchase Obligation PurchaseObligation	1793000000	usd
CY2022Q4	lnt	Individual Commitments Incurred IndividualCommitmentsIncurred	1000000	usd
CY2022	us-gaap	Revenues Revenues	4205000000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	671000000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	928000000	usd
CY2022	us-gaap	Interest Expense InterestExpense	325000000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	51000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22000000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	686000000	usd
CY2022Q4	us-gaap	Assets Assets	20163000000	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	542000000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1484000000	usd
CY2021	us-gaap	Revenues Revenues	3669000000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	657000000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	795000000	usd
CY2021	us-gaap	Interest Expense InterestExpense	277000000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	62000000	usd
CY2021Q4	us-gaap	Assets Assets	18553000000	usd
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	508000000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1169000000	usd
CY2020	us-gaap	Revenues Revenues	3416000000	usd
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	615000000	usd
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	740000000	usd
CY2020	us-gaap	Interest Expense InterestExpense	275000000	usd
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	61000000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-57000000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	614000000	usd
CY2020Q4	us-gaap	Assets Assets	17710000000	usd
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	476000000	usd
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1366000000	usd
CY2022	dei	Auditor Firm AuditorFirmId	34

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$LNT
ALLIANT ENERGY CORP Stock $lnt

2023 Q1 Form 10-K Financial Statement

#000035254123000017 Filed on February 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LNT ALLIANT ENERGY CORP Stock $lnt

2023 Q1 Form 10-K Financial Statement

#000035254123000017 Filed on February 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LNT
ALLIANT ENERGY CORP Stock $lnt