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Planned Capacity of Investment in Renewable Generation

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Public utilities, estimated annual transmissions revenue amount of increase (decrease) over prior year

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Public Utilities Estimated Refund On Earnings Over Approved Return On Equity

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Public Utilities, Recovery Mechanism Percent for Fuel Cost

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Public Utilities, Recovery Mechanism's Sharing Percentage for Fuel Cost

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Public Utilities, Refund Percent On Earnings Over Approved Return On Equity

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PublicUtilitiesRequestedRateIncreaseDecreaseAmountWindFarm

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Revised public utilities estimated refund on earnings over approved return on equity

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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The proportionate share of interest (percent) in a jointly owned utility plant.

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved return on equity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of public utility's requested equity to capital, including debt and equity.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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- Definition

Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

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The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

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RATE MATTERS AND REGULATION - Narrative (Details) $ in Millions	1 Months Ended		3 Months Ended
	May 31, 2023 USD ($)	Apr. 30, 2023 USD ($) MW	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Regulatory Proceedings [Line Items]
Interest rate			5.06%
Evergy Metro \| Missouri Public Service Commission
Regulatory Proceedings [Line Items]
Public Utilities, Recovery Mechanism's Sharing Percentage for Fuel Cost			0.05
Evergy Missouri West \| Missouri Public Service Commission
Regulatory Proceedings [Line Items]
Public Utilities, Recovery Mechanism Percent for Fuel Cost			0.95
2018 Rate Case Proceedings \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Refund percent on earnings over approved return on equity			0.50
Approved return on equity, percentage			9.30%
Estimated refund on earnings over approved return on equity			$ 0.0
2018 Rate Case Proceedings \| Evergy Metro \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Refund percent on earnings over approved return on equity			0.50
Approved return on equity, percentage			9.30%
Estimated refund on earnings over approved return on equity			$ 16.7
Revised estimated refund on earnings over approved return on equity			6.0
FERC 2023 TFR Proceeding \| TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities				$ 32.8
FERC 2023 TFR Proceeding \| Evergy Kansas Central \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			(21.7)
FERC 2023 TFR Proceeding \| Evergy Metro \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			8.6
FERC 2022 TFR Proceeding \| Evergy Kansas Central \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			33.2
FERC 2022 TFR Proceeding \| Evergy Metro \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			$ 18.1
2021 MPSC Winter Weather Qualified Extraordinary Costs Securitization
Regulatory Proceedings [Line Items]
Regulatory Asset, Amortization Period			15 years
2021 MPSC Winter Weather Qualified Extraordinary Costs Securitization \| Maximum
Regulatory Proceedings [Line Items]
Regulatory Asset, Amortization Period			17 years
2021 MPSC Winter Weather Qualified Extraordinary Costs Securitization \| Evergy Missouri West \| 2021 Winter Weather Qualified Extraordinary Costs Securitization
Regulatory Proceedings [Line Items]
Regulatory assets			$ 313.0	$ 309.0
Subsequent Event \| 2023 Rate case proceedings \| Evergy Kansas Central
Regulatory Proceedings [Line Items]
Annual revenue rate increase (decrease), requested		$ 204.0
Jointly owned utility plant, proportionate ownership share		8.00%
Planned Capacity of Investment in Renewable Generation \| MW		199
Approximate cost of investment in renewable generation		$ 250.0
Annual wind farm revenue rate increase (decrease), requested		$ 24.4
Return on equity, requested		10.25%
Rate-making equity ratio, requested		52.00%
Subsequent Event \| 2023 Rate case proceedings \| Evergy Metro
Regulatory Proceedings [Line Items]
Annual revenue rate increase (decrease), requested		$ 14.0
Return on equity, requested		10.25%
Rate-making equity ratio, requested		52.00%
Subsequent Event \| Transmission delivery charge \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ (22.3)
Subsequent Event \| Transmission delivery charge \| Evergy Metro \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 4.0