2019 Q4 Form 10-K Financial Statement
#000035254121000022 Filed on February 19, 2021
Income Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
Revenue | $880.1M | $873.5M | $3.534B |
YoY Change | 0.76% | 2.03% | 4.49% |
Cost Of Revenue | $70.60M | $82.30M | $496.0M |
YoY Change | -14.22% | 8.43% | 3.14% |
Gross Profit | $809.5M | $791.2M | $3.038B |
YoY Change | 2.31% | 1.41% | 4.71% |
Gross Profit Margin | 91.98% | 90.58% | 85.96% |
Selling, General & Admin | |||
YoY Change | |||
% of Gross Profit | |||
Research & Development | |||
YoY Change | |||
% of Gross Profit | |||
Depreciation & Amortization | $143.6M | $130.5M | $507.0M |
YoY Change | 10.04% | 9.57% | 9.79% |
% of Gross Profit | 17.74% | 16.49% | 16.69% |
Operating Expenses | $648.6M | $669.8M | $2.608B |
YoY Change | -3.17% | 3.65% | 4.33% |
Operating Profit | $160.9M | $121.4M | $694.0M |
YoY Change | 32.54% | -9.4% | 3.4% |
Interest Expense | -$24.20M | -$26.40M | $247.0M |
YoY Change | -8.33% | -16.72% | 14.56% |
% of Operating Profit | -15.04% | -21.75% | 35.59% |
Other Income/Expense, Net | -$3.400M | -$1.600M | -$124.0M |
YoY Change | 112.5% | -61.9% | -10.4% |
Pretax Income | $133.3M | $93.40M | $570.0M |
YoY Change | 42.72% | -4.79% | 6.98% |
Income Tax | $19.30M | $5.600M | $48.00M |
% Of Pretax Income | 14.48% | 6.0% | 8.42% |
Net Earnings | $114.0M | $87.80M | $522.0M |
YoY Change | 29.84% | -8.83% | 11.66% |
Net Earnings / Revenue | 12.95% | 10.05% | 14.77% |
Basic Earnings Per Share | $2.19 | ||
Diluted Earnings Per Share | $0.46 | $0.36 | $2.19 |
COMMON SHARES | |||
Basic Shares Outstanding | 233.6M shares | ||
Diluted Shares Outstanding | 233.6M shares |
Balance Sheet
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $16.00M | $21.00M | $21.00M |
YoY Change | -23.81% | -25.0% | -25.0% |
Cash & Equivalents | $16.00M | $20.90M | $21.00M |
Short-Term Investments | |||
Other Short-Term Assets | $144.0M | $80.00M | $276.0M |
YoY Change | 80.0% | 72.41% | 7.39% |
Inventory | $227.0M | $212.0M | $212.0M |
Prepaid Expenses | |||
Receivables | $402.0M | $350.4M | $81.00M |
Other Receivables | $0.00 | $0.00 | $195.0M |
Total Short-Term Assets | $876.0M | $785.1M | $785.0M |
YoY Change | 11.58% | -13.26% | -13.26% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $13.53B | $12.46B | $12.46B |
YoY Change | 8.54% | 10.93% | 10.93% |
Goodwill | |||
YoY Change | |||
Intangibles | |||
YoY Change | |||
Long-Term Investments | $458.0M | $421.0M | $431.0M |
YoY Change | 8.79% | 10.38% | 8.84% |
Other Assets | $1.830B | $89.70M | $1.747B |
YoY Change | 1940.13% | 28.69% | 5.75% |
Total Long-Term Assets | $1.830B | $1.747B | $14.64B |
YoY Change | 4.76% | 5.76% | 10.22% |
TOTAL ASSETS | |||
Total Short-Term Assets | $876.0M | $785.1M | $785.0M |
Total Long-Term Assets | $1.830B | $1.747B | $14.64B |
Total Assets | $16.70B | $15.43B | $15.43B |
YoY Change | 8.27% | 8.73% | 8.73% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $422.0M | $543.3M | $543.0M |
YoY Change | -22.33% | 13.83% | 13.84% |
Accrued Expenses | $2.000M | ||
YoY Change | |||
Deferred Revenue | |||
YoY Change | |||
Short-Term Debt | $337.0M | $441.0M | $441.0M |
YoY Change | -23.58% | 6.27% | 6.27% |
Long-Term Debt Due | $657.0M | $256.5M | $257.0M |
YoY Change | 156.14% | -70.02% | -69.98% |
Total Short-Term Liabilities | $2.054B | $1.644B | $1.644B |
YoY Change | 24.93% | -23.49% | -23.5% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $5.533B | $5.246B | $5.246B |
YoY Change | 5.46% | 30.81% | 30.79% |
Other Long-Term Liabilities | $299.0M | $287.2M | $2.147B |
YoY Change | 4.11% | -6.27% | -0.97% |
Total Long-Term Liabilities | $5.832B | $5.534B | $7.393B |
YoY Change | 5.39% | 28.18% | 19.65% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $2.054B | $1.644B | $1.644B |
Total Long-Term Liabilities | $5.832B | $5.534B | $7.393B |
Total Liabilities | $7.886B | $7.178B | $10.64B |
YoY Change | 9.87% | 11.01% | 8.5% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | $2.766B | $2.546B | |
YoY Change | 8.65% | 8.52% | |
Common Stock | $2.448B | $2.048B | |
YoY Change | 19.54% | 10.83% | |
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $5.205B | $4.586B | $4.786B |
YoY Change | |||
Total Liabilities & Shareholders Equity | $16.70B | $15.43B | $15.43B |
YoY Change | 8.27% | 8.73% | 8.73% |
Cashflow Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $114.0M | $87.80M | $522.0M |
YoY Change | 29.84% | -8.83% | 11.66% |
Depreciation, Depletion And Amortization | $143.6M | $130.5M | $507.0M |
YoY Change | 10.04% | 9.57% | 9.79% |
Cash From Operating Activities | $151.2M | $85.50M | $528.0M |
YoY Change | 76.84% | -83.93% | 1.23% |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$534.5M | -$488.1M | $1.634B |
YoY Change | 9.51% | 25.38% | 11.39% |
Acquisitions | |||
YoY Change | |||
Other Investing Activities | $108.3M | $237.0M | $38.00M |
YoY Change | -54.3% | -150.65% | 34.28% |
Cash From Investing Activities | -$426.2M | -$251.1M | -$1.067B |
YoY Change | 69.73% | -70.71% | 3.25% |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | $197.0M | ||
YoY Change | 31.68% | ||
Debt Paid & Issued, Net | $856.0M | ||
YoY Change | 18508.7% | ||
Cash From Financing Activities | 93.00M | -56.70M | $531.0M |
YoY Change | -264.02% | -116.55% | -0.3% |
NET CHANGE | |||
Cash From Operating Activities | 151.2M | 85.50M | $528.0M |
Cash From Investing Activities | -426.2M | -251.1M | -$1.067B |
Cash From Financing Activities | 93.00M | -56.70M | $531.0M |
Net Change In Cash | -182.0M | -222.3M | -$8.000M |
YoY Change | -18.13% | -1363.07% | -138.46% |
FREE CASH FLOW | |||
Cash From Operating Activities | $151.2M | $85.50M | $528.0M |
Capital Expenditures | -$534.5M | -$488.1M | $1.634B |
Free Cash Flow | $685.7M | $573.6M | -$1.106B |
YoY Change | 19.54% | -37.75% | 17.0% |
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Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
16000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
412000000 | USD |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
402000000 | USD |
CY2020Q4 | us-gaap |
Energy Related Inventory Other Fossil Fuel
EnergyRelatedInventoryOtherFossilFuel
|
66000000 | USD |
CY2019Q4 | us-gaap |
Energy Related Inventory Other Fossil Fuel
EnergyRelatedInventoryOtherFossilFuel
|
78000000 | USD |
CY2020Q4 | us-gaap |
Energy Related Inventory Gas Stored Underground
EnergyRelatedInventoryGasStoredUnderground
|
46000000 | USD |
CY2019Q4 | us-gaap |
Energy Related Inventory Gas Stored Underground
EnergyRelatedInventoryGasStoredUnderground
|
49000000 | USD |
CY2020Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
105000000 | USD |
CY2019Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
100000000 | USD |
CY2019Q4 | lnt |
Investments Business Line1
InvestmentsBusinessLine1
|
320000000 | USD |
CY2020Q4 | us-gaap |
Other Long Term Investments
OtherLongTermInvestments
|
154000000 | USD |
CY2019Q4 | us-gaap |
Other Long Term Investments
OtherLongTermInvestments
|
148000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
87000000 | USD |
CY2020Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
123000000 | USD |
CY2019Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
144000000 | USD |
CY2020Q4 | us-gaap |
Assets Current
AssetsCurrent
|
887000000 | USD |
CY2019Q4 | us-gaap |
Assets Current
AssetsCurrent
|
876000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14336000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
13527000000 | USD |
CY2020Q4 | lnt |
Investments Business Line1
InvestmentsBusinessLine1
|
331000000 | USD |
CY2020Q4 | us-gaap |
Long Term Investments
LongTermInvestments
|
485000000 | USD |
CY2019Q4 | us-gaap |
Long Term Investments
LongTermInvestments
|
468000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1929000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1758000000 | USD |
CY2020Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
73000000 | USD |
CY2019Q4 | us-gaap |
Deferred Costs
DeferredCosts
|
72000000 | USD |
CY2020Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2002000000 | USD |
CY2019Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
1830000000 | USD |
CY2020Q4 | us-gaap |
Assets
Assets
|
17710000000 | USD |
CY2019Q4 | us-gaap |
Assets
Assets
|
16701000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
8000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
657000000 | USD |
CY2020Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
389000000 | USD |
CY2019Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
337000000 | USD |
CY2020Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
377000000 | USD |
CY2019Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
422000000 | USD |
CY2020Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
67000000 | USD |
CY2019Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
70000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
249000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
212000000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
207000000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
356000000 | USD |
CY2020Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
1297000000 | USD |
CY2019Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
2054000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6769000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5533000000 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
1814000000 | USD |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
1714000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
1057000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
1212000000 | USD |
CY2020Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
511000000 | USD |
CY2019Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
484000000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
374000000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
299000000 | USD |
CY2020Q4 | us-gaap |
Deferred Credits And Other Liabilities
DeferredCreditsAndOtherLiabilities
|
3756000000 | USD |
CY2019Q4 | us-gaap |
Deferred Credits And Other Liabilities
DeferredCreditsAndOtherLiabilities
|
3709000000 | USD |
CY2020Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2019Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
2000000 | USD |
CY2019Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2020Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
2000000 | USD |
CY2020Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
2704000000 | USD |
CY2019Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
2446000000 | USD |
CY2020Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
2994000000 | USD |
CY2019Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
2766000000 | USD |
CY2020Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-1000000 | USD |
CY2019Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
1000000 | USD |
CY2020Q4 | us-gaap |
Common Stock Held In Trust
CommonStockHeldInTrust
|
11000000 | USD |
CY2019Q4 | us-gaap |
Common Stock Held In Trust
CommonStockHeldInTrust
|
10000000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
5688000000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
5205000000 | USD |
CY2020Q4 | us-gaap |
Minority Interest Amount Represented By Preferred Stock
MinorityInterestAmountRepresentedByPreferredStock
|
200000000 | USD |
CY2019Q4 | us-gaap |
Minority Interest Amount Represented By Preferred Stock
MinorityInterestAmountRepresentedByPreferredStock
|
200000000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5888000000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
5405000000 | USD |
CY2020Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
17710000000 | USD |
CY2019Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
16701000000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
624000000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
567000000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
522000000 | USD |
CY2020 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
615000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
567000000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
507000000 | 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 |
CY2018 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
67000000 | 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 |
CY2018 | us-gaap |
Increase Decrease In Allowance For Equity Funds Used During Construction
IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction
|
51000000 | USD |
CY2020 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-37000000 | USD |
CY2019 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-20000000 | USD |
CY2018 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-8000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
468000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
472000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
475000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Regulatory Assets
IncreaseDecreaseInOtherRegulatoryAssets
|
130000000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
528000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Regulatory Assets
IncreaseDecreaseInOtherRegulatoryAssets
|
16000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Regulatory Assets
IncreaseDecreaseInOtherRegulatoryAssets
|
16000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
-113000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
-40000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Regulatory Liabilities
IncreaseDecreaseInRegulatoryLiabilities
|
1000000 | 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 |
CY2018 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-56000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-110000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
0 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
0 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
20000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
10000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
|
91000000 | 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 |
CY2020 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1293000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1539000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Other Property Plant And Equipment
PaymentsToAcquireOtherPropertyPlantAndEquipment
|
1569000000 | USD |
CY2020 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
73000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
101000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
65000000 | 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 |
CY2018 | us-gaap |
Proceeds From Collection Of Retained Interest In Securitized Receivables
ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables
|
605000000 | 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 |
CY2018 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
38000000 | 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 |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1067000000 | USD |
CY2020 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
377000000 | USD |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
337000000 | USD |
CY2018 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
312000000 | 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 |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
197000000 | 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 |
CY2018 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
1500000000 | USD |
CY2020 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
657000000 | USD |
CY2019 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
256000000 | USD |
CY2018 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
856000000 | 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 |
CY2018 | us-gaap |
Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
|
26000000 | 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 |
CY2018 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-24000000 | 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 |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
531000000 | 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 |
CY2018 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-8000000 | 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 |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
|
34000000 | 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 |
CY2020 | us-gaap |
Interest Paid Net
InterestPaidNet
|
274000000 | USD |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
268000000 | USD |
CY2018 | us-gaap |
Interest Paid Net
InterestPaidNet
|
247000000 | USD |
CY2020 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-5000000 | USD |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-21000000 | USD |
CY2018 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
5000000 | 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 |
CY2018 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
299000000 | 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 |
CY2018 | us-gaap |
Consideration Received For Beneficial Interest Obtained For Transferring Financial Asset
ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset
|
119000000 | USD |
CY2017Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
4382000000 | USD |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
512000000 | USD |
CY2018 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
312000000 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
197000000 | USD |
CY2018 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
-5000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
2000000 | 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 |
CY2020 | 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. | |
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 |
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 |
CY2020 | 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. | |
CY2020Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
44000000 | USD |
CY2020Q4 | us-gaap |
Weighted Average Rate Domestic Deposit Money Market
WeightedAverageRateDomesticDepositMoneyMarket
|
0.0004 | |
CY2020Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
2010000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
1845000000 | USD |
CY2020Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
1306000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
1424000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Present Value Of Regulated Asset For Plant Abandonment
PublicUtilitiesPropertyPlantAndEquipmentPresentValueOfRegulatedAssetForPlantAbandonment
|
1269000000 | USD |
CY2019Q4 | us-gaap |
Public Utilities Property Plant And Equipment Present Value Of Regulated Asset For Plant Abandonment
PublicUtilitiesPropertyPlantAndEquipmentPresentValueOfRegulatedAssetForPlantAbandonment
|
0 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment Electric
PublicUtilitiesPropertyPlantAndEquipmentElectric
|
16243000000 | USD |
CY2019Q4 | lnt |
Public Utilities Property Plant And Equipment Electric
PublicUtilitiesPropertyPlantAndEquipmentElectric
|
13865000000 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment Gas
PublicUtilitiesPropertyPlantAndEquipmentGas
|
1563000000 | USD |
CY2019Q4 | lnt |
Public Utilities Property Plant And Equipment Gas
PublicUtilitiesPropertyPlantAndEquipmentGas
|
1463000000 | USD |
CY2020Q4 | lnt |
Public Utilities Property Plant And Equipment General
PublicUtilitiesPropertyPlantAndEquipmentGeneral
|
534000000 | USD |
CY2019Q4 | lnt |
Public Utilities Property Plant And Equipment General
PublicUtilitiesPropertyPlantAndEquipmentGeneral
|
520000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
4868000000 | USD |
CY2019Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
4602000000 | USD |
CY2020Q4 | lnt |
Net Utility Plant
NetUtilityPlant
|
13472000000 | USD |
CY2019Q4 | lnt |
Net Utility Plant
NetUtilityPlant
|
11246000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Construction Work In Progress
PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
|
405000000 | USD |
CY2019Q4 | us-gaap |
Public Utilities Property Plant And Equipment Construction Work In Progress
PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
|
1835000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
7000000 | USD |
CY2019Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
6000000 | USD |
CY2020Q4 | us-gaap |
Public Utilities Property Plant And Equipment Net
PublicUtilitiesPropertyPlantAndEquipmentNet
|
13884000000 | USD |
CY2019Q4 | us-gaap |
Public Utilities Property Plant And Equipment Net
PublicUtilitiesPropertyPlantAndEquipmentNet
|
13087000000 | USD |
CY2020Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line1
PropertyPlantAndEquipmentNonregulatedBusinessLine1
|
79000000 | USD |
CY2019Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line1
PropertyPlantAndEquipmentNonregulatedBusinessLine1
|
83000000 | USD |
CY2020Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line2
PropertyPlantAndEquipmentNonregulatedBusinessLine2
|
373000000 | USD |
CY2019Q4 | lnt |
Property Plant And Equipment Nonregulated Business Line2
PropertyPlantAndEquipmentNonregulatedBusinessLine2
|
357000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
452000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
440000000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14336000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
13527000000 | USD |
CY2020Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1
|
63000000 | USD |
CY2019Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line1
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine1
|
59000000 | USD |
CY2020Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2
|
210000000 | USD |
CY2019Q4 | lnt |
Accumulated Depreciation On Property Plant And Equipment Non Regulated Business Line2
AccumulatedDepreciationOnPropertyPlantAndEquipmentNonRegulatedBusinessLine2
|
172000000 | 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 |
CY2018 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Additions
PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
|
76000000 | USD |
CY2020Q4 | us-gaap |
Jointly Owned Utility Plant Gross Ownership Amount Of Plant In Service
JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
|
2574000000 | USD |
CY2020Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Plant Accumulated Depreciation
JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
|
727000000 | USD |
CY2020Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Construction Work In Progress
JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
|
41000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
|
101000000 | USD |
CY2019Q4 | us-gaap |
Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
|
92000000 | USD |
CY2020Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
82000000 | USD |
CY2019Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
82000000 | USD |
CY2020Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2019Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2020Q4 | us-gaap |
Other Receivables
OtherReceivables
|
59000000 | USD |
CY2019Q4 | us-gaap |
Other Receivables
OtherReceivables
|
47000000 | USD |
CY2020Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
18000000 | USD |
CY2019Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
7000000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
412000000 | USD |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
402000000 | USD |
CY2020Q4 | us-gaap |
Trade Receivables Held For Sale Amount
TradeReceivablesHeldForSaleAmount
|
90000000 | USD |
CY2019Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
245022800 | shares |
CY2018Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
236063279 | shares |
CY2017Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
231348646 | shares |
CY2020 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
472283 | shares |
CY2019 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
501808 | shares |
CY2018 | lnt |
Shares Of Stock Issued Shareowner Direct Plan
SharesOfStockIssuedShareownerDirectPlan
|
576965 | 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 |
CY2018 | us-gaap |
Stock Issued During Period Shares Employee Stock Purchase Plans
StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
|
5078 | shares |
CY2020 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
0 | shares |
CY2019 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
2738 | shares |
CY2018 | lnt |
Other Common Stock Activity
OtherCommonStockActivity
|
38423 | 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 |
CY2020Q4 | lnt |
Shares Available For Issuance Pursuant To Various Plans
SharesAvailableForIssuancePursuantToVariousPlans
|
15000000 | shares |
CY2020Q4 | us-gaap |
Line Of Credit Facility Current Borrowing Capacity
LineOfCreditFacilityCurrentBorrowingCapacity
|
1000000000 | USD |
CY2020Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
389000000 | USD |
CY2019Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
337000000 | USD |
CY2020Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.002 | |
CY2019Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.019 | |
CY2020Q4 | us-gaap |
Line Of Credit Facility Remaining Borrowing Capacity
LineOfCreditFacilityRemainingBorrowingCapacity
|
611000000 | USD |
CY2019Q4 | us-gaap |
Line Of Credit Facility Remaining Borrowing Capacity
LineOfCreditFacilityRemainingBorrowingCapacity
|
663000000 | USD |
CY2020 | us-gaap |
Shortterm Debt Maximum Amount Outstanding During Period
ShorttermDebtMaximumAmountOutstandingDuringPeriod
|
495000000 | USD |
CY2019 | us-gaap |
Shortterm Debt Maximum Amount Outstanding During Period
ShorttermDebtMaximumAmountOutstandingDuringPeriod
|
601000000 | USD |
CY2020 | us-gaap |
Shortterm Debt Average Outstanding Amount
ShorttermDebtAverageOutstandingAmount
|
292000000 | USD |
CY2019 | us-gaap |
Shortterm Debt Average Outstanding Amount
ShorttermDebtAverageOutstandingAmount
|
453000000 | USD |
CY2020 | us-gaap |
Short Term Debt Weighted Average Interest Rate Over Time
ShortTermDebtWeightedAverageInterestRateOverTime
|
0.007 | |
CY2019 | us-gaap |
Short Term Debt Weighted Average Interest Rate Over Time
ShortTermDebtWeightedAverageInterestRateOverTime
|
0.025 | |
CY2020Q4 | us-gaap |
Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
|
6833000000 | USD |
CY2019Q4 | us-gaap |
Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
|
6240000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
8000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
657000000 | USD |
CY2020Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
41000000 | USD |
CY2019Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
37000000 | USD |
CY2020Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
15000000 | USD |
CY2019Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
13000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
6769000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5533000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
8000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
633000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
408000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
509000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
300000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
15000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
16000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
2000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
2000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
13000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
14000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
15000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
16000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P10Y | |
CY2019Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P11Y | |
CY2020Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.04 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.04 | |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
2000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
2000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
2000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
2000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
2000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
8000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
18000000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
3000000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
15000000 | 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 |
CY2018 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
3534000000 | USD |
CY2020 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
1000000 | USD |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-7000000 | USD |
CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-1000000 | 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 |
CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
-5000000 | 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 |
CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
68000000 | 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 |
CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
30000000 | 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 |
CY2018 | lnt |
Production Tax Credits Net Of State Tax Impacts
ProductionTaxCreditsNetOfStateTaxImpacts
|
30000000 | USD |
CY2020 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2019 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2018 | us-gaap |
Investment Tax Credit
InvestmentTaxCredit
|
1000000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-57000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
69000000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
48000000 | USD |
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 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
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 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
0.07 | |
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 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities
EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
|
0.05 | |
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 | |
CY2018 | lnt |
Effective Income Tax Rate Reconciliation Amortization Of Excess Deferred Taxes
EffectiveIncomeTaxRateReconciliationAmortizationOfExcessDeferredTaxes
|
-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 | |
CY2018 | lnt |
Effective Income Tax Rate Reconciliation Effect Of Rate Making On Property Related Differences
EffectiveIncomeTaxRateReconciliationEffectOfRateMakingOnPropertyRelatedDifferences
|
-0.08 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
|
-0.01 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
|
-0.01 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
|
0.02 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Other Reconciling Items Percent
EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
|
0 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Other Reconciling Items Percent
EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
|
0 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Other Reconciling Items Percent
EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
|
0.01 | |
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 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
-0.01 | |
CY2020 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.10 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
61000000 | USD |
CY2019 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.11 | |
CY2018 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.08 | |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
2232000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
2022000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
101000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
84000000 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
2449000000 | USD |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
2217000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
454000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
355000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
|
77000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards Domestic
DeferredTaxAssetsOperatingLossCarryforwardsDomestic
|
60000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
|
37000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
|
37000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
73000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
641000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
513000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
6000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
10000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
635000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
503000000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1814000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1714000000 | USD |
CY2020 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
4000000 | USD |
CY2020 | lnt |
Statute Of Limitations Expiration Period From Extended Due Date Of Federal Tax Return
StatuteOfLimitationsExpirationPeriodFromExtendedDueDateOfFederalTaxReturn
|
P3Y | |
CY2020 | lnt |
Statuteof Limitations Expiration Periodfrom Extended Due Dateof Iowa Tax Return
StatuteofLimitationsExpirationPeriodfromExtendedDueDateofIowaTaxReturn
|
P3Y | |
CY2020 | lnt |
Statuteof Limitations Expiration Periodfrom Extended Due Dateof Wisconsin Tax Return
StatuteofLimitationsExpirationPeriodfromExtendedDueDateofWisconsinTaxReturn
|
P4Y | |
CY2018 | lnt |
Tax Cuts And Jobs Act Of2017 Change In Income Tax Expense Benefit
TaxCutsAndJobsActOf2017ChangeInIncomeTaxExpenseBenefit
|
-6000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months
DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
|
94000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Two
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
|
96000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Three
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
|
96000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Four
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
|
96000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Five
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
|
97000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
13000000 | USD |
CY2020Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
|
472000000 | USD |
CY2020Q4 | lnt |
Defined Benefit Pension And Other Postretirement Benefits Plans Total Plan Assets Percentage On Common Stock
DefinedBenefitPensionAndOtherPostretirementBenefitsPlansTotalPlanAssetsPercentageOnCommonStock
|
0.01 | |
CY2019Q4 | lnt |
Defined Benefit Pension And Other Postretirement Benefits Plans Total Plan Assets Percentage On Common Stock
DefinedBenefitPensionAndOtherPostretirementBenefitsPlansTotalPlanAssetsPercentageOnCommonStock
|
0.01 | |
CY2020Q4 | lnt |
Common Stock Percentage In Assets Held Saving Plans
CommonStockPercentageInAssetsHeldSavingPlans
|
0.09 | |
CY2019Q4 | lnt |
Common Stock Percentage In Assets Held Saving Plans
CommonStockPercentageInAssetsHeldSavingPlans
|
0.11 | |
CY2020 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
25000000 | USD |
CY2019 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
25000000 | USD |
CY2018 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
25000000 | USD |
CY2020 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
16000000 | USD |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
26000000 | USD |
CY2018 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
17000000 | 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 |
CY2018 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
5000000 | USD |
CY2020Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
|
5000000 | USD |
CY2020Q4 | us-gaap |
Share Price
SharePrice
|
51.53 | |
CY2020 | lnt |
Deferred Compensation Plan Base Salary And Incentive Compensation Percentage
DeferredCompensationPlanBaseSalaryAndIncentiveCompensationPercentage
|
1 | |
CY2020 | lnt |
Carrying Value Of Deferred Compensation
CarryingValueOfDeferredCompensation
|
11000000 | USD |
CY2019 | lnt |
Carrying Value Of Deferred Compensation
CarryingValueOfDeferredCompensation
|
10000000 | USD |
CY2020 | lnt |
Fair Market Value Of Deferred Compensation
FairMarketValueOfDeferredCompensation
|
20000000 | USD |
CY2019 | lnt |
Fair Market Value Of Deferred Compensation
FairMarketValueOfDeferredCompensation
|
21000000 | USD |
CY2020 | lnt |
Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts
CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts
|
22000000 | USD |
CY2019 | lnt |
Carrying Value Of Entity Deferred Compensation Obligations Interest And Equity Accounts
CarryingValueOfEntityDeferredCompensationObligationsInterestAndEquityAccounts
|
21000000 | USD |
CY2019Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
196000000 | USD |
CY2018Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
177000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
13000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-6000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
8000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
48000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
26000000 | USD |
CY2020 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
7000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
7000000 | USD |
CY2020Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
251000000 | USD |
CY2019Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
196000000 | USD |
CY2020Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
44000000 | USD |
CY2019Q4 | us-gaap |
Money Market Funds At Carrying Value
MoneyMarketFundsAtCarryingValue
|
5000000 | USD |
CY2020Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2019Q4 | lnt |
Fair Value Of Deferred Proceeds Of Receivables Sold
FairValueOfDeferredProceedsOfReceivablesSold
|
188000000 | USD |
CY2020Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
8109000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
6920000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Next Twelve Months
PurchaseObligationDueInNextTwelveMonths
|
383000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Second Year
PurchaseObligationDueInSecondYear
|
218000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Third Year
PurchaseObligationDueInThirdYear
|
165000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Fourth Year
PurchaseObligationDueInFourthYear
|
113000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Fifth Year
PurchaseObligationDueInFifthYear
|
71000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due After Fifth Year
PurchaseObligationDueAfterFifthYear
|
214000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation
PurchaseObligation
|
1164000000 | USD |
CY2020Q4 | lnt |
Individual Commitments Incurred
IndividualCommitmentsIncurred
|
1000000 | 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 |
Interest Expense
InterestExpense
|
273000000 | 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 |
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 |
CY2018 | us-gaap |
Revenues
Revenues
|
3534000000 | USD |
CY2018 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
507000000 | USD |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
694000000 | USD |
CY2018 | us-gaap |
Interest Expense
InterestExpense
|
247000000 | USD |
CY2018 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
55000000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
48000000 | USD |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
512000000 | USD |
CY2018Q4 | us-gaap |
Assets
Assets
|
15426000000 | USD |
CY2018Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
421000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
1634000000 | USD |