2022 Q1 Form 10-K Financial Statement
#000035254122000020 Filed on February 18, 2022
Income Statement
Concept | 2022 Q1 | 2021 Q4 | 2021 |
---|---|---|---|
Revenue | $1.068B | $927.0M | $3.669B |
YoY Change | 18.53% | 13.46% | 7.41% |
Cost Of Revenue | $168.0M | $109.0M | $537.0M |
YoY Change | 25.37% | 67.69% | 19.6% |
Gross Profit | $900.0M | $818.0M | $3.132B |
YoY Change | 17.34% | 8.78% | 5.56% |
Gross Profit Margin | 84.27% | 88.24% | 85.36% |
Selling, General & Admin | |||
YoY Change | |||
% of Gross Profit | |||
Research & Development | |||
YoY Change | |||
% of Gross Profit | |||
Depreciation & Amortization | $166.0M | $163.0M | $657.0M |
YoY Change | 1.22% | 1.24% | 6.83% |
% of Gross Profit | 18.44% | 19.93% | 20.98% |
Operating Expenses | $652.0M | $686.0M | $2.616B |
YoY Change | 8.13% | 7.19% | 4.89% |
Operating Profit | $248.0M | $132.0M | $795.0M |
YoY Change | 25.25% | 17.86% | 7.43% |
Interest Expense | -$48.00M | -$47.00M | $277.0M |
YoY Change | -169.57% | -4.08% | 0.73% |
% of Operating Profit | -19.35% | -35.61% | 34.84% |
Other Income/Expense, Net | $0.00 | $2.000M | -$195.0M |
YoY Change | -100.0% | -128.57% | 12.72% |
Pretax Income | $200.0M | $87.00M | $600.0M |
YoY Change | 36.99% | 55.36% | 5.82% |
Income Tax | $8.000M | -$8.000M | -$74.00M |
% Of Pretax Income | 4.0% | -9.2% | -12.33% |
Net Earnings | $192.0M | $95.00M | $674.0M |
YoY Change | 10.34% | 43.94% | 8.01% |
Net Earnings / Revenue | 17.98% | 10.25% | 18.37% |
Basic Earnings Per Share | $0.77 | $2.63 | |
Diluted Earnings Per Share | $0.77 | $378.5K | $2.63 |
COMMON SHARES | |||
Basic Shares Outstanding | 250.5M shares | 250.2M shares | |
Diluted Shares Outstanding | 250.9M shares | 250.7M shares |
Balance Sheet
Concept | 2022 Q1 | 2021 Q4 | 2021 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $67.00M | $39.00M | $39.00M |
YoY Change | 378.57% | -27.78% | -27.78% |
Cash & Equivalents | $67.00M | $39.00M | $39.00M |
Short-Term Investments | |||
Other Short-Term Assets | $359.0M | $240.0M | $435.0M |
YoY Change | 206.84% | 95.12% | 52.1% |
Inventory | $185.0M | $246.0M | $246.0M |
Prepaid Expenses | |||
Receivables | $481.0M | $440.0M | $82.00M |
Other Receivables | $0.00 | $267.0M | $267.0M |
Total Short-Term Assets | $1.092B | $1.069B | $1.069B |
YoY Change | 44.64% | 20.52% | 20.52% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $15.19B | $14.99B | $14.99B |
YoY Change | 5.85% | 4.54% | 4.54% |
Goodwill | |||
YoY Change | |||
Intangibles | |||
YoY Change | |||
Long-Term Investments | $533.0M | $508.0M | $517.0M |
YoY Change | 7.89% | 6.72% | 6.6% |
Other Assets | $2.022B | $1.980B | $1.980B |
YoY Change | 1.51% | -1.1% | -1.1% |
Total Long-Term Assets | $17.75B | $17.48B | $17.48B |
YoY Change | 5.39% | 3.93% | 3.93% |
TOTAL ASSETS | |||
Total Short-Term Assets | $1.092B | $1.069B | $1.069B |
Total Long-Term Assets | $17.75B | $17.48B | $17.48B |
Total Assets | $18.84B | $18.55B | $18.55B |
YoY Change | 7.08% | 4.76% | 4.76% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $383.0M | $436.0M | $436.0M |
YoY Change | 24.76% | 15.65% | 15.65% |
Accrued Expenses | $2.000M | ||
YoY Change | 0.0% | ||
Deferred Revenue | |||
YoY Change | |||
Short-Term Debt | $276.0M | $515.0M | $515.0M |
YoY Change | -17.86% | 32.39% | 32.39% |
Long-Term Debt Due | $333.0M | $633.0M | $634.0M |
YoY Change | 8.12% | 7812.5% | 7825.0% |
Total Short-Term Liabilities | $1.521B | $2.054B | $2.054B |
YoY Change | 8.03% | 58.37% | 58.37% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $7.383B | $6.735B | $6.746B |
YoY Change | 14.09% | -0.5% | -0.34% |
Other Long-Term Liabilities | $1.900B | $388.0M | $1.836B |
YoY Change | 421.98% | 3.74% | -5.46% |
Total Long-Term Liabilities | $9.283B | $7.123B | $8.582B |
YoY Change | 35.82% | -0.28% | -1.48% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $1.521B | $2.054B | $2.054B |
Total Long-Term Liabilities | $9.283B | $7.123B | $8.582B |
Total Liabilities | $12.76B | $9.177B | $12.56B |
YoY Change | 54.82% | 8.73% | 6.27% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | $3.250B | ||
YoY Change | 8.55% | ||
Common Stock | $2.752B | ||
YoY Change | 1.7% | ||
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $6.077B | $5.990B | $5.990B |
YoY Change | |||
Total Liabilities & Shareholders Equity | $18.84B | $18.55B | $18.55B |
YoY Change | 7.08% | 4.76% | 4.76% |
Cashflow Statement
Concept | 2022 Q1 | 2021 Q4 | 2021 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $192.0M | $95.00M | $674.0M |
YoY Change | 10.34% | 43.94% | 8.01% |
Depreciation, Depletion And Amortization | $166.0M | $163.0M | $657.0M |
YoY Change | 1.22% | 1.24% | 6.83% |
Cash From Operating Activities | $251.0M | $105.0M | $582.0M |
YoY Change | 73.1% | 61.54% | 16.17% |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$307.0M | -$298.0M | $1.169B |
YoY Change | -243.46% | -16.76% | -14.42% |
Acquisitions | |||
YoY Change | |||
Other Investing Activities | $84.00M | $22.00M | $61.00M |
YoY Change | 425.0% | -74.42% | 41.86% |
Cash From Investing Activities | -$223.0M | -$276.0M | -$728.0M |
YoY Change | 486.84% | 1.47% | -23.45% |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | $28.00M | ||
YoY Change | -88.66% | ||
Debt Paid & Issued, Net | $300.0M | $8.000M | |
YoY Change | -98.78% | ||
Cash From Financing Activities | 3.000M | 187.0M | $130.0M |
YoY Change | -102.07% | 171.01% | -73.36% |
NET CHANGE | |||
Cash From Operating Activities | 251.0M | 105.0M | $582.0M |
Cash From Investing Activities | -223.0M | -276.0M | -$728.0M |
Cash From Financing Activities | 3.000M | 187.0M | $130.0M |
Net Change In Cash | 31.00M | 16.00M | -$16.00M |
YoY Change | -181.58% | -111.59% | -142.11% |
FREE CASH FLOW | |||
Cash From Operating Activities | $251.0M | $105.0M | $582.0M |
Capital Expenditures | -$307.0M | -$298.0M | $1.169B |
Free Cash Flow | $558.0M | $403.0M | -$587.0M |
YoY Change | -908.7% | -4.73% | -32.14% |
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Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
659000000 | USD |
CY2020 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
614000000 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
557000000 | USD |
CY2021 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
250200000 | shares |
CY2020 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
248400000 | shares |
CY2019 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
238500000 | shares |
CY2021 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
250700000 | shares |
CY2020 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
248700000 | shares |
CY2019 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
239000000.0 | shares |
CY2021 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.63 | |
CY2020 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.47 | |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.34 | |
CY2021 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.63 | |
CY2020 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.47 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.33 | |
CY2021Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
39000000 | USD |
CY2020Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
54000000 | USD |
CY2021Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
440000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
412000000 | USD |
CY2021Q4 | us-gaap |
Energy Related Inventory Other Fossil Fuel
EnergyRelatedInventoryOtherFossilFuel
|
51000000 | USD |
CY2020Q4 | us-gaap |
Energy Related Inventory Other Fossil Fuel
EnergyRelatedInventoryOtherFossilFuel
|
66000000 | USD |
CY2021Q4 | us-gaap |
Energy Related Inventory Gas Stored Underground
EnergyRelatedInventoryGasStoredUnderground
|
82000000 | USD |
CY2020Q4 | us-gaap |
Energy Related Inventory Gas Stored Underground
EnergyRelatedInventoryGasStoredUnderground
|
46000000 | USD |
CY2021Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
113000000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14987000000 | USD |
CY2020Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
105000000 | USD |
CY2021Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
104000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
81000000 | USD |
CY2021Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
240000000 | USD |
CY2020Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
123000000 | USD |
CY2021Q4 | us-gaap |
Assets Current
AssetsCurrent
|
1069000000 | USD |
CY2020Q4 | us-gaap |
Assets Current
AssetsCurrent
|
887000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14336000000 | USD |
CY2021Q4 | lnt |
Investments Business Line1
InvestmentsBusinessLine1
|
338000000 | USD |
CY2020Q4 | lnt |
Investments Business Line1
InvestmentsBusinessLine1
|
331000000 | USD |
CY2021Q4 | us-gaap |
Other Long Term Investments
OtherLongTermInvestments
|
179000000 | USD |
CY2020Q4 | us-gaap |
Other Long Term Investments
OtherLongTermInvestments
|
154000000 | USD |
CY2021Q4 | us-gaap |
Long Term Investments
LongTermInvestments
|
517000000 | USD |
CY2020Q4 | us-gaap |
Long Term Investments
LongTermInvestments
|
485000000 | USD |
CY2021Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1836000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1929000000 | USD |
CY2021Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
144000000 | USD |
CY2020Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
73000000 | USD |
CY2021Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
1980000000 | USD |
CY2020Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2002000000 | USD |
CY2021Q4 | us-gaap |
Assets
Assets
|
18553000000 | USD |
CY2020Q4 | us-gaap |
Assets
Assets
|
17710000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
633000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
8000000 | USD |
CY2021Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
515000000 | USD |
CY2020Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
389000000 | USD |
CY2021Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
436000000 | USD |
CY2020Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
377000000 | USD |
CY2021Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
58000000 | USD |
CY2020Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
67000000 | USD |
CY2021Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
186000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
249000000 | USD |
CY2021Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
226000000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
207000000 | USD |
CY2021Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
2054000000 | USD |
CY2020Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
1297000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6735000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6769000000 | USD |
CY2021Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
1927000000 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
1814000000 | USD |
CY2021Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
1085000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
1057000000 | USD |
CY2021Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
374000000 | USD |
CY2020Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
511000000 | USD |
CY2021Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
388000000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
374000000 | USD |
CY2021Q4 | us-gaap |
Deferred Credits And Other Liabilities
DeferredCreditsAndOtherLiabilities
|
3774000000 | USD |
CY2020Q4 | us-gaap |
Deferred Credits And Other Liabilities
DeferredCreditsAndOtherLiabilities
|
3756000000 | USD |
CY2021Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2020Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2020Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
CY2021Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
CY2020Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
480000000 | shares |
CY2021Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
480000000 | shares |
CY2021Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
250474529 | shares |
CY2020Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
249868415 | shares |
CY2021Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
3000000 | USD |
CY2020Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
2000000 | USD |
CY2021Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
2749000000 | USD |
CY2020Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
2704000000 | USD |
CY2021Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
3250000000 | USD |
CY2020Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
2994000000 | USD |
CY2021Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
0 | USD |
CY2020Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-1000000 | USD |
CY2021Q4 | lnt |
Common Stock Held In Trust Shares
CommonStockHeldInTrustShares
|
383532 | shares |
CY2020Q4 | lnt |
Common Stock Held In Trust Shares
CommonStockHeldInTrustShares
|
380542 | shares |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased
ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
|
30.59 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased
ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
|
28.73 | |
CY2021Q4 | us-gaap |
Common Stock Held In Trust
CommonStockHeldInTrust
|
12000000 | USD |
CY2020Q4 | us-gaap |
Common Stock Held In Trust
CommonStockHeldInTrust
|
11000000 | USD |
CY2021Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
5990000000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
5688000000 | USD |
CY2021Q4 | us-gaap |
Minority Interest Amount Represented By Preferred Stock
MinorityInterestAmountRepresentedByPreferredStock
|
0 | USD |
CY2020Q4 | us-gaap |
Minority Interest Amount Represented By Preferred Stock
MinorityInterestAmountRepresentedByPreferredStock
|
200000000 | USD |
CY2021Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5990000000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5888000000 | USD |
CY2021Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
18553000000 | USD |
CY2021 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
-78000000 | USD |
CY2020 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-37000000 | USD |
CY2020Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
17710000000 | USD |
CY2021 | us-gaap |
Net Income Loss
NetIncomeLoss
|
674000000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
624000000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
567000000 | USD |
CY2021 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
657000000 | USD |
CY2020 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
615000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
567000000 | USD |
CY2020 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
-66000000 | USD |
CY2019 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
56000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Allowance For Equity Funds Used During Construction
IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction
|
18000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Allowance For Equity Funds Used During Construction
IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction
|
39000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Allowance For Equity Funds Used During Construction
IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction
|
66000000 | USD |
CY2021 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-35000000 | USD |
CY2019 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-20000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
530000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
468000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
472000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Derivative Assets
IncreaseDecreaseInDerivativeAssets
|
142000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Derivative Assets
IncreaseDecreaseInDerivativeAssets
|
7000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Derivative Assets
IncreaseDecreaseInDerivativeAssets
|
-2000000 | 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 |
CY2019 | us-gaap |
Increase Decrease In Other Regulatory Assets
IncreaseDecreaseInOtherRegulatoryAssets
|
16000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
-66000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
-113000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
-40000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-193000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-171000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-54000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
-137000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-110000000 | USD |
CY2020 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1293000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
27000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
-25000000 | USD |
CY2021 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
0 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
0 | USD |
CY2021 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
57000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
40000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
-13000000 | 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 |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
660000000 | USD |
CY2021 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1070000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1539000000 | 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 |
CY2020 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
377000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
101000000 | 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 |
CY2019 | us-gaap |
Proceeds From Collection Of Retained Interest In Securitized Receivables
ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables
|
413000000 | 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 |
CY2019 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
60000000 | 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 |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1287000000 | USD |
CY2021 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
403000000 | USD |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
337000000 | 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 |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
390000000 | 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 |
CY2019 | us-gaap |
Payments For Repurchase Of Redeemable Preferred Stock
PaymentsForRepurchaseOfRedeemablePreferredStock
|
0 | 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 |
CY2019 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
950000000 | USD |
CY2021 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
8000000 | USD |
CY2020 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
657000000 | USD |
CY2019 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
256000000 | 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 |
CY2019 | us-gaap |
Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
|
-104000000 | 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 |
CY2019 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-24000000 | 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 |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
619000000 | 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 |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-8000000 | USD |
CY2020Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
|
56000000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
|
18000000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
|
26000000 | 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 |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
|
18000000 | USD |
CY2021 | us-gaap |
Interest Paid Net
InterestPaidNet
|
272000000 | USD |
CY2020 | us-gaap |
Interest Paid Net
InterestPaidNet
|
274000000 | USD |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
268000000 | USD |
CY2021 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
3000000 | USD |
CY2020 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-5000000 | USD |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-21000000 | USD |
CY2021 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
141000000 | USD |
CY2020 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
131000000 | USD |
CY2019 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
196000000 | 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 |
CY2019 | us-gaap |
Consideration Received For Beneficial Interest Obtained For Transferring Financial Asset
ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset
|
188000000 | USD |
CY2018Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
4786000000 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
557000000 | USD |
CY2019 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
1.42 | |
CY2019 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
337000000 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
390000000 | USD |
CY2019 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
-10000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-1000000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5405000000 | USD |
CY2020 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
614000000 | USD |
CY2021 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
28000000 | USD |
CY2021 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
-17000000 | USD |
CY2021 | us-gaap |
Payments For Repurchase Of Redeemable Preferred Stock
PaymentsForRepurchaseOfRedeemablePreferredStock
|
200000000 | USD |
CY2021 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
1000000 | USD |
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 |
CY2020 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-2000000 | USD |
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 |
CY2021Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5990000000 | USD |
CY2021 | 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. | |
CY2021 | us-gaap |
Use Of Estimates
UseOfEstimates
|
The preparation of the financial statements requires management to make estimates and assumptions that affect: (a) the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements; and (b) the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. | |
CY2021Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
32000000 | USD |
CY2021Q4 | us-gaap |
Weighted Average Rate Domestic Deposit Money Market
WeightedAverageRateDomesticDepositMoneyMarket
|
0.0004 | |
CY2021Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
1940000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
2010000000 | USD |
CY2021Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
1271000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
1306000000 | USD |
CY2021Q4 | us-gaap |
Public Utilities Property Plant And Equipment Present Value Of Regulated Asset For Plant Abandonment
PublicUtilitiesPropertyPlantAndEquipmentPresentValueOfRegulatedAssetForPlantAbandonment
|
2094000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Present Value Of Regulated Asset For Plant Abandonment
PublicUtilitiesPropertyPlantAndEquipmentPresentValueOfRegulatedAssetForPlantAbandonment
|
1269000000 | USD |
CY2021Q4 | lnt |
Public Utilities Property Plant And Equipment Electric
PublicUtilitiesPropertyPlantAndEquipmentElectric
|
16710000000 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment Electric
PublicUtilitiesPropertyPlantAndEquipmentElectric
|
16243000000 | USD |
CY2021Q4 | lnt |
Public Utilities Property Plant And Equipment Gas
PublicUtilitiesPropertyPlantAndEquipmentGas
|
1636000000 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment Gas
PublicUtilitiesPropertyPlantAndEquipmentGas
|
1563000000 | USD |
CY2021Q4 | lnt |
Public Utilities Property Plant And Equipment General
PublicUtilitiesPropertyPlantAndEquipmentGeneral
|
621000000 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment General
PublicUtilitiesPropertyPlantAndEquipmentGeneral
|
534000000 | USD |
CY2021Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
5263000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
4868000000 | USD |
CY2021Q4 | lnt |
Net Utility Plant
NetUtilityPlant
|
13704000000 | USD |
CY2020Q4 | lnt |
Net Utility Plant
NetUtilityPlant
|
13472000000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
|
11000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
|
0 | USD |
CY2021Q4 | us-gaap |
Public Utilities Property Plant And Equipment Construction Work In Progress
PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
|
778000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Construction Work In Progress
PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
|
405000000 | USD |
CY2021Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
7000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
7000000 | USD |
CY2021Q4 | us-gaap |
Public Utilities Property Plant And Equipment Net
PublicUtilitiesPropertyPlantAndEquipmentNet
|
14500000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Net
PublicUtilitiesPropertyPlantAndEquipmentNet
|
13884000000 | USD |
CY2021Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line1
PropertyPlantAndEquipmentNonregulatedBusinessLine1
|
75000000 | USD |
CY2020Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line1
PropertyPlantAndEquipmentNonregulatedBusinessLine1
|
79000000 | USD |
CY2021Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line2
PropertyPlantAndEquipmentNonregulatedBusinessLine2
|
412000000 | USD |
CY2020Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line2
PropertyPlantAndEquipmentNonregulatedBusinessLine2
|
373000000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
487000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
452000000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14987000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14336000000 | USD |
CY2021Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1
|
67000000 | USD |
CY2020Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1
|
63000000 | USD |
CY2021Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2
|
245000000 | USD |
CY2020Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2
|
210000000 | 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 |
CY2019 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Additions
PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
|
93000000 | USD |
CY2021Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
214000000 | USD |
CY2020Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2021Q4 | us-gaap |
Other Receivables
OtherReceivables
|
53000000 | USD |
CY2021Q4 | us-gaap |
Jointly Owned Utility Plant Gross Ownership Amount Of Plant In Service
JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
|
2631000000 | USD |
CY2021Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Plant Accumulated Depreciation
JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
|
806000000 | USD |
CY2021Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Construction Work In Progress
JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
|
25000000 | USD |
CY2021Q4 | us-gaap |
Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
|
93000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
|
101000000 | USD |
CY2021Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
91000000 | USD |
CY2020Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
82000000 | USD |
CY2020Q4 | us-gaap |
Other Receivables
OtherReceivables
|
59000000 | USD |
CY2021Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
11000000 | USD |
CY2020Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
18000000 | USD |
CY2021Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
440000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
412000000 | USD |
CY2020 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
472283 | shares |
CY2019 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
501808 | shares |
CY2021 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
0 | shares |
CY2020Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
249868415 | shares |
CY2019Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
245022800 | shares |
CY2018Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
236063279 | shares |
CY2021 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
492565 | 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 |
CY2019 | us-gaap |
Stock Issued During Period Shares Employee Stock Purchase Plans
StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
|
101478 | shares |
CY2020 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
0 | shares |
CY2019 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
2738 | shares |
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 |
CY2021Q4 | lnt |
Shares Available For Issuance Pursuant To Various Plans
SharesAvailableForIssuancePursuantToVariousPlans
|
14000000 | shares |
CY2021Q4 | us-gaap |
Line Of Credit Facility Current Borrowing Capacity
LineOfCreditFacilityCurrentBorrowingCapacity
|
1000000000 | USD |
CY2021Q4 | us-gaap |
Line Of Credit Facility Current Borrowing Capacity
LineOfCreditFacilityCurrentBorrowingCapacity
|
1000000000 | USD |
CY2021Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
515000000 | USD |
CY2020Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
389000000 | USD |
CY2021Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.002 | |
CY2020Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.002 | |
CY2021Q4 | us-gaap |
Line Of Credit Facility Remaining Borrowing Capacity
LineOfCreditFacilityRemainingBorrowingCapacity
|
485000000 | USD |
CY2020Q4 | us-gaap |
Line Of Credit Facility Remaining Borrowing Capacity
LineOfCreditFacilityRemainingBorrowingCapacity
|
611000000 | USD |
CY2021 | us-gaap |
Shortterm Debt Maximum Amount Outstanding During Period
ShorttermDebtMaximumAmountOutstandingDuringPeriod
|
648000000 | USD |
CY2020 | us-gaap |
Shortterm Debt Maximum Amount Outstanding During Period
ShorttermDebtMaximumAmountOutstandingDuringPeriod
|
495000000 | USD |
CY2021 | us-gaap |
Shortterm Debt Average Outstanding Amount
ShorttermDebtAverageOutstandingAmount
|
459000000 | USD |
CY2020 | us-gaap |
Shortterm Debt Average Outstanding Amount
ShorttermDebtAverageOutstandingAmount
|
292000000 | USD |
CY2021 | us-gaap |
Short Term Debt Weighted Average Interest Rate Over Time
ShortTermDebtWeightedAverageInterestRateOverTime
|
0.002 | |
CY2020 | us-gaap |
Short Term Debt Weighted Average Interest Rate Over Time
ShortTermDebtWeightedAverageInterestRateOverTime
|
0.007 | |
CY2021Q4 | us-gaap |
Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
|
7425000000 | USD |
CY2020Q4 | us-gaap |
Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
|
6833000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
633000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
8000000 | USD |
CY2021Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
42000000 | USD |
CY2020Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
41000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
509000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
300000000 | USD |
CY2021Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
15000000 | USD |
CY2020Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
15000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6735000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6769000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
633000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
408000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
200000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
14000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
15000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
2000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
2000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
12000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
13000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
14000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
15000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P9Y | |
CY2020Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P10Y | |
CY2021Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.04 | |
CY2020Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.04 | |
CY2021Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
11000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Current
FinanceLeaseLiabilityCurrent
|
1000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Noncurrent
FinanceLeaseLiabilityNoncurrent
|
11000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
12000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
|
P34Y | |
CY2021Q4 | us-gaap |
Finance Lease Weighted Average Discount Rate Percent
FinanceLeaseWeightedAverageDiscountRatePercent
|
0.03 | |
CY2021 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
0 | USD |
CY2021 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
0 | USD |
CY2021 | us-gaap |
Lease Cost
LeaseCost
|
0 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
2000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
2000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
2000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
2000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
2000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
7000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
17000000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
3000000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
14000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Next Twelve Months
FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
|
0 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Two
FinanceLeaseLiabilityPaymentsDueYearTwo
|
0 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Three
FinanceLeaseLiabilityPaymentsDueYearThree
|
0 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Four
FinanceLeaseLiabilityPaymentsDueYearFour
|
0 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Five
FinanceLeaseLiabilityPaymentsDueYearFive
|
1000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due After Year Five
FinanceLeaseLiabilityPaymentsDueAfterYearFive
|
19000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due
FinanceLeaseLiabilityPaymentsDue
|
20000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Undiscounted Excess Amount
FinanceLeaseLiabilityUndiscountedExcessAmount
|
8000000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
12000000 | 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 |
CY2019 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
3648000000 | USD |
CY2021 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
1000000 | USD |
CY2020 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
1000000 | USD |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-7000000 | USD |
CY2021 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
3000000 | USD |
CY2020 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
8000000 | USD |
CY2019 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
24000000 | USD |
CY2021 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
9000000 | USD |
CY2020 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
22000000 | USD |
CY2019 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
70000000 | 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 |
CY2019 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
42000000 | USD |
CY2021 | lnt |
Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes
EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes
|
-0.18 | |
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 |
CY2019 | lnt |
Production Tax Credits Net Of State Tax Impacts
ProductionTaxCreditsNetOfStateTaxImpacts
|
55000000 | USD |
CY2021 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2020 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2019 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2021 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-74000000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-57000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
69000000 | USD |
CY2021 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
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 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
0.07 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
|
-0.01 | |
CY2019 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.11 | |
CY2020 | lnt |
Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes
EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes
|
-0.13 | |
CY2019 | lnt |
Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes
EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes
|
-0.01 | |
CY2021 | us-gaap |
Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities
EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
|
0.17 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities
EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
|
0.17 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities
EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
|
0.09 | |
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 | |
CY2019 | lnt |
Effective Income Tax Rate Reconciliation Effect Of Rate Making On Property Related Differences
EffectiveIncomeTaxRateReconciliationEffectOfRateMakingOnPropertyRelatedDifferences
|
-0.06 | |
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 | |
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 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
-0.01 | |
CY2021 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.12 | |
CY2020 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.10 | |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
2389000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
2232000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
111000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
101000000 | USD |
CY2021Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
2623000000 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
2449000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
560000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
454000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
|
39000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
|
77000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
|
38000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
|
37000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
65000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
73000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
702000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
641000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
6000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
6000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
696000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
635000000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1927000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1814000000 | USD |
CY2021 | lnt |
Statute Of Limitations Expiration Period From Extended Due Date Of Federal Tax Return
StatuteOfLimitationsExpirationPeriodFromExtendedDueDateOfFederalTaxReturn
|
P3Y | |
CY2021 | lnt |
Statuteof Limitations Expiration Periodfrom Extended Due Dateof Iowa Tax Return
StatuteofLimitationsExpirationPeriodfromExtendedDueDateofIowaTaxReturn
|
P3Y | |
CY2021 | lnt |
Statuteof Limitations Expiration Periodfrom Extended Due Dateof Wisconsin Tax Return
StatuteofLimitationsExpirationPeriodfromExtendedDueDateofWisconsinTaxReturn
|
P4Y | |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months
DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
|
103000000 | USD |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Two
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
|
100000000 | USD |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Three
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
|
99000000 | USD |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Four
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
|
99000000 | USD |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Five
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
|
99000000 | USD |
CY2021Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
|
458000000 | USD |
CY2021Q4 | lnt |
Defined Benefit Pension And Other Postretirement Benefits Plans Total Plan Assets Percentage On Common Stock
DefinedBenefitPensionAndOtherPostretirementBenefitsPlansTotalPlanAssetsPercentageOnCommonStock
|
0.01 | |
CY2020Q4 | lnt |
Defined Benefit Pension And Other Postretirement Benefits Plans Total Plan Assets Percentage On Common Stock
DefinedBenefitPensionAndOtherPostretirementBenefitsPlansTotalPlanAssetsPercentageOnCommonStock
|
0.01 | |
CY2021Q4 | lnt |
Common Stock Percentage In Assets Held Saving Plans
CommonStockPercentageInAssetsHeldSavingPlans
|
0.09 | |
CY2020Q4 | lnt |
Common Stock Percentage In Assets Held Saving Plans
CommonStockPercentageInAssetsHeldSavingPlans
|
0.09 | |
CY2021 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
26000000 | USD |
CY2020 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
25000000 | USD |
CY2019 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
25000000 | USD |
CY2021 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
14000000 | USD |
CY2020 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
16000000 | USD |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
26000000 | USD |
CY2021 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
4000000 | USD |
CY2020 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
4000000 | USD |
CY2019 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
7000000 | USD |
CY2021Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
|
5000000 | USD |
CY2021 | lnt |
Deferred Compensation Plan Base Salary And Incentive Compensation Percentage
DeferredCompensationPlanBaseSalaryAndIncentiveCompensationPercentage
|
1 | |
CY2021 | lnt |
Carrying Value Of Deferred Compensation
CarryingValueOfDeferredCompensation
|
12000000 | USD |
CY2020 | lnt |
Carrying Value Of Deferred Compensation
CarryingValueOfDeferredCompensation
|
11000000 | USD |
CY2021 | lnt |
Fair Market Value Of Deferred Compensation
FairMarketValueOfDeferredCompensation
|
24000000 | USD |
CY2020 | lnt |
Fair Market Value Of Deferred Compensation
FairMarketValueOfDeferredCompensation
|
20000000 | USD |
CY2021 | lnt |
Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts
CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts
|
22000000 | USD |
CY2020 | lnt |
Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts
CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts
|
22000000 | USD |
CY2020Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
251000000 | USD |
CY2019Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
196000000 | USD |
CY2021 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
50000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
13000000 | USD |
CY2021 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
17000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
13000000 | USD |
CY2021 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
3000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
48000000 | USD |
CY2021 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
7000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
7000000 | USD |
CY2021Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
294000000 | USD |
CY2020Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
251000000 | USD |
CY2021Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
32000000 | USD |
CY2020Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
44000000 | USD |
CY2021Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
214000000 | USD |
CY2020Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
8330000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
8109000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due In Next Twelve Months
PurchaseObligationDueInNextTwelveMonths
|
452000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due In Second Year
PurchaseObligationDueInSecondYear
|
256000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due In Third Year
PurchaseObligationDueInThirdYear
|
177000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due In Fourth Year
PurchaseObligationDueInFourthYear
|
110000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due In Fifth Year
PurchaseObligationDueInFifthYear
|
90000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation Due After Fifth Year
PurchaseObligationDueAfterFifthYear
|
200000000 | USD |
CY2021Q4 | us-gaap |
Purchase Obligation
PurchaseObligation
|
1285000000 | USD |
CY2021Q4 | lnt |
Individual Commitments Incurred
IndividualCommitmentsIncurred
|
1000000 | 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 |
CY2021 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-74000000 | USD |
CY2021 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
659000000 | 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 |
CY2019 | us-gaap |
Revenues
Revenues
|
3648000000 | USD |
CY2019 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
567000000 | USD |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
778000000 | USD |
CY2019 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
53000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
69000000 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
557000000 | USD |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
273000000 | USD |
CY2019Q4 | us-gaap |
Assets
Assets
|
16701000000 | USD |
CY2019Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
458000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
1640000000 | USD |
CY2021 | dei |
Auditor Name
AuditorName
|
DELOITTE & TOUCHE LLP | |
CY2021 | dei |
Auditor Location
AuditorLocation
|
Milwaukee, Wisconsin | |
CY2021 | dei |
Auditor Firm
AuditorFirmId
|
34 |