XML 149 R117.htm IDEA: XBRL DOCUMENT
v3.20.4

COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
Estimates Of Environmental Financial Impact And Related Issues [Line Items] |
Industry aggregate limit for nuclear insurance | $ 3,200.0
Industry aggregate limit for non nuclear insurance | 1,800.0
Nuclear liability insurance, full limit of public liability | 13,800.0
Nuclear liability insurance, maximum available commercial insurance | 500.0
Nuclear liability insurance, industry wide retrospective assessment program | 13,300.0
Nuclear liability insurance, owners insurance amount, maximum | 137.6
Nuclear liability insurance, owners insurance, amount per incident | 20.5
Nuclear liability insurance, owners property insurance, maximum | 2,800.0
Nuclear liability insurance, owners nonnuclear property insurance, maximum | 2,300.0
Nuclear liability insurance, owners property insurance assessment, maximum | 33.2
Evergy |
Estimates Of Environmental Financial Impact And Related Issues [Line Items] |
Nuclear liability insurance, owners insurance amount, maximum | 129.4
Nuclear liability insurance, owners insurance, amount per incident | 19.2
Nuclear liability insurance, owners property insurance assessment, maximum | 31.2
Evergy Kansas Central |
Estimates Of Environmental Financial Impact And Related Issues [Line Items] |
Nuclear liability insurance, owners insurance amount, maximum | 64.7
Nuclear liability insurance, owners insurance, amount per incident | 9.6
Nuclear liability insurance, owners property insurance assessment, maximum | 15.6
Evergy Metro |
Estimates Of Environmental Financial Impact And Related Issues [Line Items] |
Nuclear liability insurance, owners insurance amount, maximum | 64.7
Nuclear liability insurance, owners insurance, amount per incident | 9.6
Nuclear liability insurance, owners property insurance assessment, maximum | $ 15.6

X
- References No definition available. + Details
Name: | evrg_EstimatesOfEnvironmentalFinancialImpactAndRelatedIssuesLineItems
Namespace Prefix: | evrg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Industry Aggregate Limit For Non NuclearInsuarnce + References No definition available. + Details
Name: | evrg_IndustryAggregateLimitForNonNuclearInsurance
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Industry Aggregate Limit For Nuclear Insurance + References No definition available. + Details
Name: | evrg_IndustryAggregateLimitForNuclearInsurance
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Full Limit Of Public Liability + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceFullLimitOfPublicLiability
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Industry Wide Retrospective Assessment Program + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceIndustryWideRetrospectiveAssessmentProgram
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Maximum Available Commercial Insurance + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceMaximumAvailableCommercialInsurance
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Owners Insurance Amount Maximum + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceOwnersInsuranceAmountMaximum
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Owners Insurance Amount, Per Incident + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceOwnersInsuranceAmountPerIncident
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Owners Nonnuclear Property Insurance Maximum + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceOwnersNonnuclearPropertyInsuranceMaximum
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Owners Property Insurance Assessment Maximum + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceOwnersPropertyInsuranceAssessmentMaximum
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nuclear Liability Insurance Owners Property Insurance Maximum + References No definition available. + Details
Name: | evrg_NuclearLiabilityInsuranceOwnersPropertyInsuranceMaximum
Namespace Prefix: | evrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=evrg_EvergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=evrg_EvergyKansasCentralIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=evrg_EvergyMetroIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |