XML 92 R56.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Callaway Energy Center (Insurance Disclosure) (Details) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 USD ($) yr
Nuclear Waste Matters [Line Items] |
Decommissioning Cost | $ 7.0
Frequency of Decommissioning Cost Study | 3 years
Number Of Years The Limit Of Liability And The Maximum Potential Annual Payments Are Adjusted | 5 years
Number Of Weeks Of Coverage After The First Twelve Weeks Of An Outage | yr | 1
Number Of Additional Weeks After Initial Indemnity Coverage For Power Outage | yr | 1.365
Public Liability And Nuclear Worker Liability - American Nuclear Insurers |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | $ 500.0
Insurance Maximum Coverage per Incident | 0.0
Public Liability And Nuclear Worker Liability - Pool Participation |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 15,763.0
Insurance Maximum Coverage per Incident | 166.0
Threshold Amount For Retrospective Insurance Assessment For Covered Loss Under Public Liability And Nuclear Worker Liability Insurance Policy | 500.0
Maximum Annual Payment Per Incident At Licensed Commercial Nuclear Reactor | 24.7
Public Liability |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 16,263.0
Insurance Maximum Coverage per Incident | 166.0
Property Damage - Nuclear Electric Insurance Ltd |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 3,200.0
Insurance Maximum Coverage per Incident | 28.0
Accidental Outage - Nuclear Electric Insurance Ltd |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 490.0
Insurance Maximum Coverage per Incident | 11.0
Amount Of Weekly Indemnity Coverage Commencing Twelve Weeks After Power Outage | 4.5
Amount Of Additional Weekly Indemnity Coverage Commencing After Initial Indemnity Coverage | 3.6
Amount Of Weekly Indemnity Coverage Thereafter Not Exceeding Policy Limit | 490.0
Sub-Limit Of Amount Of Weekly Indemnity Coverage Thereafter Not Exceeding Policy Limit For Non-Nuclear Events | 291.0
Radiation Event |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 2,700.0
Aggregate Nuclear Power Industry Insurance Policy Limit For Losses From Terrorist Attacks Within Twelve Month Period | 3,200.0
Non-Radiation Event |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | 700.0
Aggregate Nuclear Power Industry Insurance Policy Limit For Losses From Terrorist Attacks Within Twelve Month Period | 1,800.0
Property Damage European Mutual Association for Nuclear Insurance |
Nuclear Waste Matters [Line Items] |
Insurance Aggregate Maximum Coverage | $ 490.0

X
- Definition Aggregate Nuclear Power Industry Insurance Policy Limit For Losses From Terrorist Attacks Within Twelve Month Period + References No definition available. + Details
Name: | aee_AggregateNuclearPowerIndustryInsurancePolicyLimitForLossesFromTerroristAttacksWithinTwelveMonthPeriod
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount Of Additional Weekly Indemnity Coverage Commencing After Initial Indemnity Coverage + References No definition available. + Details
Name: | aee_AmountOfAdditionalWeeklyIndemnityCoverageCommencingAfterInitialIndemnityCoverage
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of weekly indemnity coverage thereafter not exceeding policy limit + References No definition available. + Details
Name: | aee_AmountOfWeeklyIndemnityCoverageThereafterNotExceedingPolicyLimit
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of weekly indemnity coverage commencing twelve weeks after power outage + References No definition available. + Details
Name: | aee_AmountofWeeklyIndemnityCoverageCommencingTwelveWeeksAfterPowerOutage
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Annual Decommissioning Cost + References No definition available. + Details
Name: | aee_DecommissioningCost
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Frequency of Decommissioning Cost Study + References No definition available. + Details
Name: | aee_FrequencyOfDecommissioningCostStudy
Namespace Prefix: | aee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Insurance aggregate maximum coverage + References No definition available. + Details
Name: | aee_InsuranceAggregateMaximumCoverage
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Insurance maximum coverage per incident + References No definition available. + Details
Name: | aee_InsuranceMaximumCoveragePerIncident
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum Annual Payment Per Incident At Licensed Commercial Nuclear Reactor + References No definition available. + Details
Name: | aee_MaximumAnnualPaymentPerIncidentAtLicensedCommercialNuclearReactor
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition [Line Items] for Nuclear Waste Matters [Table] + References No definition available. + Details
Name: | aee_NuclearWasteMattersLineItems
Namespace Prefix: | aee_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Additional Weeks After Initial Indemnity Coverage For Power Outage + References No definition available. + Details
Name: | aee_NumberOfAdditionalWeeksAfterInitialIndemnityCoverageForPowerOutage
Namespace Prefix: | aee_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of years the limit of liability and the maximum potential annual payments are adjusted + References No definition available. + Details
Name: | aee_NumberOfYearsTheLimitOfLiabilityAndTheMaximumPotentialAnnualPaymentsAreAdjusted
Namespace Prefix: | aee_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of weeks of coverage after the first twelve weeks of an outage + References No definition available. + Details
Name: | aee_Numberofweeksofcoverageafterthefirsttwelveweeksofanoutage
Namespace Prefix: | aee_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sub-limit of Amount of Weekly indemnity Coverage Thereafter Not Exceeding Policy Limit for Non-Nuclear Events + References No definition available. + Details
Name: | aee_SubLimitOfAmountOfWeeklyIndemnityCoverageThereafterNotExceedingPolicyLimitForNonNuclearEvents
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Threshold amount for retrospective insurance assessment for covered loss under public liability and nuclear worker liability insurance policy + References No definition available. + Details
Name: | aee_ThresholdAmountForRetrospectiveInsuranceAssessmentForCoveredLossUnderPublicLiabilityAndNuclearWorkerLiabilityInsurancePolicy
Namespace Prefix: | aee_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_PublicLiabilityAndNuclearWorkerLiabilityAmericanNuclearInsurersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_PublicLiabilityAndNuclearWorkerLiabilityPoolParticipationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_PublicLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_PropertyDamageNuclearElectricInsuranceLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_AccidentalOutageNuclearElectricInsuranceLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_RadiationEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_NonradiationeventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=aee_PropertyDamageEuropeanMutualAssociationforNuclearInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |