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Derivative Instruments - Notional Amounts (Details) - Not Designated as Hedging Instrument [Member] MWh in Millions, MMBTU in Millions | 12 Months Ended
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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

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- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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