10-Q Filing

AMEREN CORP CIK: 1002910 Q1 2024

Filing Information

Form Type	10-Q
Accession Number	`0001002910-24-000090`
Period End Date	20240331
Filing Date	20240506
Fiscal Year	2024
Fiscal Period	Q1
XBRL Instance	aee-20240331_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 170 Income Statement 96 Cash Flow Statement 152 Stockholders Equity 60

Balance Sheet 170 line items

Line Item	Tag	Value	Unit	Period
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$30.00M	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$30.00M	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$37.00M	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$37.00M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$25.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$25.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$85.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$85.00M	USD	Point-in-time
Accounts receivable - trade (less allowance for doubtful accounts)	`AccountsReceivableNetCurrent`	$494.00M	USD	Point-in-time
Accounts receivable - trade (less allowance for doubtful accounts)	`AccountsReceivableNetCurrent`	$494.00M	USD	Point-in-time
Accounts receivable - trade (less allowance for doubtful accounts)	`AccountsReceivableNetCurrent`	$507.00M	USD	Point-in-time
Accounts receivable - trade (less allowance for doubtful accounts)	`AccountsReceivableNetCurrent`	$507.00M	USD	Point-in-time
Unbilled revenue	`UnbilledReceivablesCurrent`	$319.00M	USD	Point-in-time
Unbilled revenue	`UnbilledReceivablesCurrent`	$319.00M	USD	Point-in-time
Unbilled revenue	`UnbilledReceivablesCurrent`	$272.00M	USD	Point-in-time
Unbilled revenue	`UnbilledReceivablesCurrent`	$272.00M	USD	Point-in-time
Miscellaneous accounts receivable	`OtherReceivablesNetCurrent`	$106.00M	USD	Point-in-time
Miscellaneous accounts receivable	`OtherReceivablesNetCurrent`	$106.00M	USD	Point-in-time
Miscellaneous accounts receivable	`OtherReceivablesNetCurrent`	$82.00M	USD	Point-in-time
Miscellaneous accounts receivable	`OtherReceivablesNetCurrent`	$82.00M	USD	Point-in-time
Inventories	`InventoryNet`	$733.00M	USD	Point-in-time
Inventories	`InventoryNet`	$733.00M	USD	Point-in-time
Inventories	`InventoryNet`	$679.00M	USD	Point-in-time
Inventories	`InventoryNet`	$679.00M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$365.00M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$365.00M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$356.00M	USD	Point-in-time
Current regulatory assets	`RegulatoryAssetsCurrent`	$356.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$139.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$139.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$103.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$103.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.08B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.08B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.18B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.18B	USD	Point-in-time
Property, Plant, and Equipment, Net	`PropertyPlantAndEquipmentNet`	$34.11B	USD	Point-in-time
Property, Plant, and Equipment, Net	`PropertyPlantAndEquipmentNet`	$34.11B	USD	Point-in-time
Property, Plant, and Equipment, Net	`PropertyPlantAndEquipmentNet`	$33.78B	USD	Point-in-time
Property, Plant, and Equipment, Net	`PropertyPlantAndEquipmentNet`	$33.78B	USD	Point-in-time
Nuclear decommissioning trust fund	`DecommissioningFundInvestments`	$1.15B	USD	Point-in-time
Nuclear decommissioning trust fund	`DecommissioningFundInvestments`	$1.15B	USD	Point-in-time
Nuclear decommissioning trust fund	`DecommissioningFundInvestments`	$1.23B	USD	Point-in-time
Nuclear decommissioning trust fund	`DecommissioningFundInvestments`	$1.23B	USD	Point-in-time
Goodwill	`Goodwill`	$411.00M	USD	Point-in-time
Goodwill	`Goodwill`	$411.00M	USD	Point-in-time
Goodwill	`Goodwill`	$411.00M	USD	Point-in-time
Goodwill	`Goodwill`	$411.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.81B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.81B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.90B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$1.90B	USD	Point-in-time
Pension and other postretirement benefits	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$581.00M	USD	Point-in-time
Pension and other postretirement benefits	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$581.00M	USD	Point-in-time
Pension and other postretirement benefits	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$597.00M	USD	Point-in-time
Pension and other postretirement benefits	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$597.00M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$964.00M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$964.00M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$921.00M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$921.00M	USD	Point-in-time
Total investments and other assets	`RegulatedEntityOtherAssetsNoncurrent`	$4.87B	USD	Point-in-time
Total investments and other assets	`RegulatedEntityOtherAssetsNoncurrent`	$4.87B	USD	Point-in-time
Total investments and other assets	`RegulatedEntityOtherAssetsNoncurrent`	$5.11B	USD	Point-in-time
Total investments and other assets	`RegulatedEntityOtherAssetsNoncurrent`	$5.11B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$40.83B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$40.83B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$41.31B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$41.31B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$849.00M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$849.00M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$1.15B	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$1.15B	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$868.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$868.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$536.00M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$536.00M	USD	Point-in-time
Accounts and wages payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$647.00M	USD	Point-in-time
Accounts and wages payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$647.00M	USD	Point-in-time
Accounts and wages payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$1.14B	USD	Point-in-time
Accounts and wages payable	`AccountsPayableAndAccruedLiabilitiesCurrent`	$1.14B	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$190.00M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$190.00M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$176.00M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$176.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$651.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$651.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$648.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$648.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.35B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.35B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.50B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.50B	USD	Point-in-time
Long-term Debt, Net	`LongTermDebtNoncurrent`	$15.17B	USD	Point-in-time
Long-term Debt, Net	`LongTermDebtNoncurrent`	$15.17B	USD	Point-in-time
Long-term Debt, Net	`LongTermDebtNoncurrent`	$15.12B	USD	Point-in-time
Long-term Debt, Net	`LongTermDebtNoncurrent`	$15.12B	USD	Point-in-time
Accumulated deferred income taxes and tax credits, net	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$4.25B	USD	Point-in-time
Accumulated deferred income taxes and tax credits, net	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$4.25B	USD	Point-in-time
Accumulated deferred income taxes and tax credits, net	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$4.18B	USD	Point-in-time
Accumulated deferred income taxes and tax credits, net	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$4.18B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$5.51B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$5.51B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$5.59B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$5.59B	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$772.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$772.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$779.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$779.00M	USD	Point-in-time
Other deferred credits and liabilities	`OtherLiabilitiesNoncurrent`	$439.00M	USD	Point-in-time
Other deferred credits and liabilities	`OtherLiabilitiesNoncurrent`	$439.00M	USD	Point-in-time
Other deferred credits and liabilities	`OtherLiabilitiesNoncurrent`	$426.00M	USD	Point-in-time
Other deferred credits and liabilities	`OtherLiabilitiesNoncurrent`	$426.00M	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$10.89B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$10.89B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$11.06B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$11.06B	USD	Point-in-time
Commitments and Contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common Stock	`CommonStockValue`	$3.00M	USD	Point-in-time
Common Stock	`CommonStockValue`	$3.00M	USD	Point-in-time
Common Stock	`CommonStockValue`	$3.00M	USD	Point-in-time
Common Stock	`CommonStockValue`	$3.00M	USD	Point-in-time
Other paid-in capital, principally premium on common stock	`AdditionalPaidInCapital`	$7.22B	USD	Point-in-time
Other paid-in capital, principally premium on common stock	`AdditionalPaidInCapital`	$7.22B	USD	Point-in-time
Other paid-in capital, principally premium on common stock	`AdditionalPaidInCapital`	$7.23B	USD	Point-in-time
Other paid-in capital, principally premium on common stock	`AdditionalPaidInCapital`	$7.23B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.22B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.22B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.14B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.14B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-6.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-6.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.00M	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$11.35B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$11.35B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$11.44B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$11.44B	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$129.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$129.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$129.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$129.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$41.31B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$41.31B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$40.83B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$40.83B	USD	Point-in-time

Income Statement 96 line items

Line Item	Tag	Value	Unit	Period
Pension and other postretirement benefit plan activity, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Pension and other postretirement benefit plan activity, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Pension and other postretirement benefit plan activity, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Pension and other postretirement benefit plan activity, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Total operating revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$2.06B	USD	1 Quarter
Total operating revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$2.06B	USD	1 Quarter
Total operating revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$1.82B	USD	1 Quarter
Total operating revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$1.82B	USD	1 Quarter
Fuel and purchased power	`UtilitiesOperatingExpenseFuelUsedAndPurchasedPower`	$608.00M	USD	1 Quarter
Fuel and purchased power	`UtilitiesOperatingExpenseFuelUsedAndPurchasedPower`	$608.00M	USD	1 Quarter
Fuel and purchased power	`UtilitiesOperatingExpenseFuelUsedAndPurchasedPower`	$328.00M	USD	1 Quarter
Fuel and purchased power	`UtilitiesOperatingExpenseFuelUsedAndPurchasedPower`	$328.00M	USD	1 Quarter
Natural gas purchased for resale	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$151.00M	USD	1 Quarter
Natural gas purchased for resale	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$151.00M	USD	1 Quarter
Natural gas purchased for resale	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$208.00M	USD	1 Quarter
Natural gas purchased for resale	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$208.00M	USD	1 Quarter
Other operations and maintenance	`UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses`	$470.00M	USD	1 Quarter
Other operations and maintenance	`UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses`	$470.00M	USD	1 Quarter
Other operations and maintenance	`UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses`	$448.00M	USD	1 Quarter
Other operations and maintenance	`UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses`	$448.00M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$361.00M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$361.00M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$320.00M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$320.00M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$127.00M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$127.00M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$135.00M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$135.00M	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.71B	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.71B	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.45B	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.45B	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$351.00M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$351.00M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$371.00M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$371.00M	USD	1 Quarter
Other Income, Net	`OtherNonoperatingIncomeExpense`	$89.00M	USD	1 Quarter
Other Income, Net	`OtherNonoperatingIncomeExpense`	$89.00M	USD	1 Quarter
Other Income, Net	`OtherNonoperatingIncomeExpense`	$78.00M	USD	1 Quarter
Other Income, Net	`OtherNonoperatingIncomeExpense`	$78.00M	USD	1 Quarter
Interest Charges	`InterestExpense`	$154.00M	USD	1 Quarter
Interest Charges	`InterestExpense`	$154.00M	USD	1 Quarter
Interest Charges	`InterestExpense`	$127.00M	USD	1 Quarter
Interest Charges	`InterestExpense`	$127.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$306.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$306.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$302.00M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$302.00M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$37.00M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$37.00M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$44.00M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$44.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$265.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$265.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Net Income Attributable to Ameren Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$264.00M	USD	1 Quarter
Net Income Attributable to Ameren Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$264.00M	USD	1 Quarter
Net Income Attributable to Ameren Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Net Income Attributable to Ameren Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Pension and other postretirement benefit plan activity, net of income taxes (benefit)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Pension and other postretirement benefit plan activity, net of income taxes (benefit)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Pension and other postretirement benefit plan activity, net of income taxes (benefit)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Pension and other postretirement benefit plan activity, net of income taxes (benefit)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$264.00M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$264.00M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$261.00M	USD	1 Quarter
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$261.00M	USD	1 Quarter
Less: Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Comprehensive Income Attributable to Noncontrolling Interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Comprehensive Income Attributable to Ameren Common Shareholders	`ComprehensiveIncomeNetOfTax`	$260.00M	USD	1 Quarter
Comprehensive Income Attributable to Ameren Common Shareholders	`ComprehensiveIncomeNetOfTax`	$260.00M	USD	1 Quarter
Comprehensive Income Attributable to Ameren Common Shareholders	`ComprehensiveIncomeNetOfTax`	$263.00M	USD	1 Quarter
Comprehensive Income Attributable to Ameren Common Shareholders	`ComprehensiveIncomeNetOfTax`	$263.00M	USD	1 Quarter
Earnings per Common Share Basic	`EarningsPerShareBasic`	$1.01	USD	1 Quarter
Earnings per Common Share Basic	`EarningsPerShareBasic`	$1.01	USD	1 Quarter
Earnings per Common Share Basic	`EarningsPerShareBasic`	$0.98	USD	1 Quarter
Earnings per Common Share Basic	`EarningsPerShareBasic`	$0.98	USD	1 Quarter
Earnings per Common Share Diluted	`EarningsPerShareDiluted`	$0.98	USD	1 Quarter
Earnings per Common Share Diluted	`EarningsPerShareDiluted`	$0.98	USD	1 Quarter
Earnings per Common Share Diluted	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Earnings per Common Share Diluted	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Weighted-average Common Shares Outstanding Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	262.20M	shares	1 Quarter
Weighted-average Common Shares Outstanding Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	262.20M	shares	1 Quarter
Weighted-average Common Shares Outstanding Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	266.40M	shares	1 Quarter
Weighted-average Common Shares Outstanding Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	266.40M	shares	1 Quarter
Weighted-average Common Shares Outstanding Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	266.80M	shares	1 Quarter
Weighted-average Common Shares Outstanding Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	266.80M	shares	1 Quarter
Weighted-average Common Shares Outstanding Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	263.10M	shares	1 Quarter
Weighted-average Common Shares Outstanding Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	263.10M	shares	1 Quarter

Cash Flow Statement 152 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net income	`ProfitLoss`	$265.00M	USD	1 Quarter
Net income	`ProfitLoss`	$265.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$379.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$379.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$350.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$350.00M	USD	1 Quarter
Amortization of nuclear fuel	`AmortizationOfNuclearFuelLease`	$18.00M	USD	1 Quarter
Amortization of nuclear fuel	`AmortizationOfNuclearFuelLease`	$18.00M	USD	1 Quarter
Amortization of nuclear fuel	`AmortizationOfNuclearFuelLease`	$19.00M	USD	1 Quarter
Amortization of nuclear fuel	`AmortizationOfNuclearFuelLease`	$19.00M	USD	1 Quarter
Amortization of debt issuance costs and premium/discounts	`AmortizationOfFinancingCostsAndDiscounts`	$5.00M	USD	1 Quarter
Amortization of debt issuance costs and premium/discounts	`AmortizationOfFinancingCostsAndDiscounts`	$5.00M	USD	1 Quarter
Amortization of debt issuance costs and premium/discounts	`AmortizationOfFinancingCostsAndDiscounts`	$3.00M	USD	1 Quarter
Amortization of debt issuance costs and premium/discounts	`AmortizationOfFinancingCostsAndDiscounts`	$3.00M	USD	1 Quarter
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$44.00M	USD	1 Quarter
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$44.00M	USD	1 Quarter
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$35.00M	USD	1 Quarter
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$35.00M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.00M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.00M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.00M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.00M	USD	1 Quarter
Stock-based compensation costs	`ShareBasedCompensation`	$8.00M	USD	1 Quarter
Stock-based compensation costs	`ShareBasedCompensation`	$8.00M	USD	1 Quarter
Stock-based compensation costs	`ShareBasedCompensation`	$8.00M	USD	1 Quarter
Stock-based compensation costs	`ShareBasedCompensation`	$8.00M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$6.00M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$6.00M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-16.00M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-16.00M	USD	1 Quarter
Receivables	`IncreaseDecreaseInReceivables`	$-112.00M	USD	1 Quarter
Receivables	`IncreaseDecreaseInReceivables`	$-112.00M	USD	1 Quarter
Receivables	`IncreaseDecreaseInReceivables`	$-52.00M	USD	1 Quarter
Receivables	`IncreaseDecreaseInReceivables`	$-52.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-37.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-37.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-54.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-54.00M	USD	1 Quarter
Accounts and wages payable	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-284.00M	USD	1 Quarter
Accounts and wages payable	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-284.00M	USD	1 Quarter
Accounts and wages payable	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-362.00M	USD	1 Quarter
Accounts and wages payable	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-362.00M	USD	1 Quarter
Taxes accrued	`IncreaseDecreaseInAccruedTaxesPayable`	$70.00M	USD	1 Quarter
Taxes accrued	`IncreaseDecreaseInAccruedTaxesPayable`	$70.00M	USD	1 Quarter
Taxes accrued	`IncreaseDecreaseInAccruedTaxesPayable`	$50.00M	USD	1 Quarter
Taxes accrued	`IncreaseDecreaseInAccruedTaxesPayable`	$50.00M	USD	1 Quarter
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$40.00M	USD	1 Quarter
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$40.00M	USD	1 Quarter
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$95.00M	USD	1 Quarter
Regulatory assets and liabilities	`IncreaseDecreaseInRegulatoryAssetsAndLiabilities`	$95.00M	USD	1 Quarter
Assets, other	`IncreaseDecreaseInOtherOperatingAssets`	$14.00M	USD	1 Quarter
Assets, other	`IncreaseDecreaseInOtherOperatingAssets`	$14.00M	USD	1 Quarter
Assets, other	`IncreaseDecreaseInOtherOperatingAssets`	$-9.00M	USD	1 Quarter
Assets, other	`IncreaseDecreaseInOtherOperatingAssets`	$-9.00M	USD	1 Quarter
Liabilities, other	`IncreaseDecreaseInOtherOperatingLiabilities`	$-6.00M	USD	1 Quarter
Liabilities, other	`IncreaseDecreaseInOtherOperatingLiabilities`	$-6.00M	USD	1 Quarter
Liabilities, other	`IncreaseDecreaseInOtherOperatingLiabilities`	$11.00M	USD	1 Quarter
Liabilities, other	`IncreaseDecreaseInOtherOperatingLiabilities`	$11.00M	USD	1 Quarter
Pension and other postretirement benefits	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-56.00M	USD	1 Quarter
Pension and other postretirement benefits	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-56.00M	USD	1 Quarter
Pension and other postretirement benefits	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-58.00M	USD	1 Quarter
Pension and other postretirement benefits	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-58.00M	USD	1 Quarter
Counterparty collateral, net	`IncreaseDecreaseInCommodityContractAssetsAndLiabilities`	$-112.00M	USD	1 Quarter
Counterparty collateral, net	`IncreaseDecreaseInCommodityContractAssetsAndLiabilities`	$-112.00M	USD	1 Quarter
Counterparty collateral, net	`IncreaseDecreaseInCommodityContractAssetsAndLiabilities`	$-8.00M	USD	1 Quarter
Counterparty collateral, net	`IncreaseDecreaseInCommodityContractAssetsAndLiabilities`	$-8.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$496.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$496.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$492.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$492.00M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$890.00M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$890.00M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$931.00M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$931.00M	USD	1 Quarter
Nuclear fuel expenditures	`PaymentsForNuclearFuel`	$12.00M	USD	1 Quarter
Nuclear fuel expenditures	`PaymentsForNuclearFuel`	$12.00M	USD	1 Quarter
Nuclear fuel expenditures	`PaymentsForNuclearFuel`	$20.00M	USD	1 Quarter
Nuclear fuel expenditures	`PaymentsForNuclearFuel`	$20.00M	USD	1 Quarter
Purchases of securities nuclear decommissioning trust fund	`PaymentsToInvestInDecommissioningFund`	$70.00M	USD	1 Quarter
Purchases of securities nuclear decommissioning trust fund	`PaymentsToInvestInDecommissioningFund`	$70.00M	USD	1 Quarter
Purchases of securities nuclear decommissioning trust fund	`PaymentsToInvestInDecommissioningFund`	$29.00M	USD	1 Quarter
Purchases of securities nuclear decommissioning trust fund	`PaymentsToInvestInDecommissioningFund`	$29.00M	USD	1 Quarter
Sales and maturities of securities nuclear decommissioning trust fund	`ProceedsFromDecommissioningFund`	$66.00M	USD	1 Quarter
Sales and maturities of securities nuclear decommissioning trust fund	`ProceedsFromDecommissioningFund`	$66.00M	USD	1 Quarter
Sales and maturities of securities nuclear decommissioning trust fund	`ProceedsFromDecommissioningFund`	$17.00M	USD	1 Quarter
Sales and maturities of securities nuclear decommissioning trust fund	`ProceedsFromDecommissioningFund`	$17.00M	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.00M	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.00M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-964.00M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-964.00M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-906.00M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-906.00M	USD	1 Quarter
Dividends on common stock	`PaymentsOfDividendsCommonStock`	$165.00M	USD	1 Quarter
Dividends on common stock	`PaymentsOfDividendsCommonStock`	$165.00M	USD	1 Quarter
Dividends on common stock	`PaymentsOfDividendsCommonStock`	$178.00M	USD	1 Quarter
Dividends on common stock	`PaymentsOfDividendsCommonStock`	$178.00M	USD	1 Quarter
Dividends paid to noncontrolling interest holders	`PaymentsOfDividendsMinorityInterest`	$1.00M	USD	1 Quarter
Dividends paid to noncontrolling interest holders	`PaymentsOfDividendsMinorityInterest`	$1.00M	USD	1 Quarter
Dividends paid to noncontrolling interest holders	`PaymentsOfDividendsMinorityInterest`	$1.00M	USD	1 Quarter
Dividends paid to noncontrolling interest holders	`PaymentsOfDividendsMinorityInterest`	$1.00M	USD	1 Quarter
Short-term debt, net	`ProceedsFromRepaymentsOfShortTermDebt`	$179.00M	USD	1 Quarter
Short-term debt, net	`ProceedsFromRepaymentsOfShortTermDebt`	$179.00M	USD	1 Quarter
Short-term debt, net	`ProceedsFromRepaymentsOfShortTermDebt`	$332.00M	USD	1 Quarter
Short-term debt, net	`ProceedsFromRepaymentsOfShortTermDebt`	$332.00M	USD	1 Quarter
Issuances of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$347.00M	USD	1 Quarter
Issuances of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$347.00M	USD	1 Quarter
Issuances of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$499.00M	USD	1 Quarter
Issuances of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$499.00M	USD	1 Quarter
Issuances of common stock	`ProceedsFromIssuanceOfCommonStock`	$5.00M	USD	1 Quarter
Issuances of common stock	`ProceedsFromIssuanceOfCommonStock`	$5.00M	USD	1 Quarter
Issuances of common stock	`ProceedsFromIssuanceOfCommonStock`	$10.00M	USD	1 Quarter
Issuances of common stock	`ProceedsFromIssuanceOfCommonStock`	$10.00M	USD	1 Quarter
Employee payroll taxes related to stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$8.00M	USD	1 Quarter
Employee payroll taxes related to stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$8.00M	USD	1 Quarter
Employee payroll taxes related to stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$20.00M	USD	1 Quarter
Employee payroll taxes related to stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$20.00M	USD	1 Quarter
Debt issuance costs	`PaymentOfFinancingAndStockIssuanceCosts`	$5.00M	USD	1 Quarter
Debt issuance costs	`PaymentOfFinancingAndStockIssuanceCosts`	$5.00M	USD	1 Quarter
Debt issuance costs	`PaymentOfFinancingAndStockIssuanceCosts`	$5.00M	USD	1 Quarter
Debt issuance costs	`PaymentOfFinancingAndStockIssuanceCosts`	$5.00M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-3.00M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-3.00M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$489.00M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$489.00M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$497.00M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$497.00M	USD	1 Quarter
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$21.00M	USD	1 Quarter
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$21.00M	USD	1 Quarter
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$83.00M	USD	1 Quarter
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$83.00M	USD	1 Quarter
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$272.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$272.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$216.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$216.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$355.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$355.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$237.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$237.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$272.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$272.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$216.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$216.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$355.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$355.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$237.00M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$237.00M	USD	Point-in-time

Stockholders Equity 60 line items

Line Item	Tag	Value	Unit	Period
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
Beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
Net income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net income	`ProfitLoss`	$262.00M	USD	1 Quarter
Net income	`ProfitLoss`	$265.00M	USD	1 Quarter
Net income	`ProfitLoss`	$265.00M	USD	1 Quarter
Net income attributable to Ameren common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$264.00M	USD	1 Quarter
Net income attributable to Ameren common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$264.00M	USD	1 Quarter
Net income attributable to Ameren common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Net income attributable to Ameren common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Change in deferred retirement benefit costs	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Change in deferred retirement benefit costs	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Change in deferred retirement benefit costs	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Change in deferred retirement benefit costs	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.00M	USD	1 Quarter
Net income attributable to noncontrolling interest holders	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Net income attributable to noncontrolling interest holders	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Net income attributable to noncontrolling interest holders	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Net income attributable to noncontrolling interest holders	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
Common stock shares outstanding at beginning of year	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
Shares issued under the DRPlus and 401(k) plan	`StockIssuedDuringPeriodSharesDividendReinvestmentPlan`	100,000.00	shares	1 Quarter
Shares issued under the DRPlus and 401(k) plan	`StockIssuedDuringPeriodSharesDividendReinvestmentPlan`	100,000.00	shares	1 Quarter
Shares issued under the DRPlus and 401(k) plan	`StockIssuedDuringPeriodSharesDividendReinvestmentPlan`	100,000.00	shares	1 Quarter
Shares issued under the DRPlus and 401(k) plan	`StockIssuedDuringPeriodSharesDividendReinvestmentPlan`	100,000.00	shares	1 Quarter
Shares issued for stock-based compensation	`StockIssuedDuringPeriodSharesOther`	500,000.00	shares	1 Quarter
Shares issued for stock-based compensation	`StockIssuedDuringPeriodSharesOther`	500,000.00	shares	1 Quarter
Shares issued for stock-based compensation	`StockIssuedDuringPeriodSharesOther`	200,000.00	shares	1 Quarter
Shares issued for stock-based compensation	`StockIssuedDuringPeriodSharesOther`	200,000.00	shares	1 Quarter
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	262.00M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	266.60M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	266.30M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
Common stock shares outstanding at end of period	`CommonStockSharesOutstanding`	262.60M	shares	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.74B	USD	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.57B	USD	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
End of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$11.48B	USD	Point-in-time
Shareholders' equity, end of year	`StockholdersEquity`	$11.35B	USD	Point-in-time
Shareholders' equity, end of year	`StockholdersEquity`	$11.35B	USD	Point-in-time
Shareholders' equity, end of year	`StockholdersEquity`	$11.44B	USD	Point-in-time
Shareholders' equity, end of year	`StockholdersEquity`	$11.44B	USD	Point-in-time
Dividends per common share	`CommonStockDividendsPerShareCashPaid`	$0.67	USD	1 Quarter
Dividends per common share	`CommonStockDividendsPerShareCashPaid`	$0.67	USD	1 Quarter
Dividends per common share	`CommonStockDividendsPerShareCashPaid`	$0.63	USD	1 Quarter
Dividends per common share	`CommonStockDividendsPerShareCashPaid`	$0.63	USD	1 Quarter

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