XML 137 R107.htm IDEA: XBRL DOCUMENT v3.24.0.1

Derivative Instruments - Notional Amounts (Details) - Not Designated as Hedging Instrument [Member] MWh in Millions, MMBTU in Millions	12 Months Ended
	Dec. 31, 2023 MWh MMBTU	Dec. 31, 2022 MMBTU MWh
Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	559.9	772.7
Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	52.9	67.2
Evergy Kansas Central | Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	558.7	769.6
Evergy Kansas Central | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	32.1	41.6
Evergy Metro | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	15.1	18.2

X

- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_PriceRiskDerivativesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=evrg_NaturalGasCommodityContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=evrg_PowerCommodityContractMember
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: