Approximate MW Nameplate Capacity

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- Definition

PublicUtilitiesAcceptedRefundOnEarningsOverApprovedReturnOnEquity

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- Definition

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

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- Definition

Public Utilities Estimated Refund On Earnings Over Approved Return On Equity

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- Definition

Public Utilities Refund On Earnings Over Approved Return On Equity

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- Definition

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

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- Definition

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

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- Definition

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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- Definition

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

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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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RATE MATTERS AND REGULATION - Narrative (Details)	1 Months Ended		6 Months Ended
RATE MATTERS AND REGULATION - Narrative (Details)	Feb. 18, 2026 USD ($)	Jul. 31, 2025	Jun. 30, 2026 USD ($)	Jul. 31, 2026 USD ($)	May 31, 2026 MW	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Evergy Metro
Regulatory Proceedings [Line Items]
ApproximateMWNameplateCapacity \| MW					440
A2025 Rate case proceedings \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Refund Percent On Earnings Over Approved Return On Equity		50.00%
Approved return on equity, percentage		9.70%
PublicUtilitiesEstimatedRefundOnEarningsOverApprovedReturnOnEquity			$ 0
PublicUtilitiesRefundOnEarningsOverApprovedReturnOnEquity						$ 0
Transmission delivery charge \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount			16,800,000
Transmission delivery charge \| Evergy Metro \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount			4,300,000
A2026RateCaseProceedings [Member] \| Evergy Metro
Regulatory Proceedings [Line Items]
Annual revenue rate increase (decrease), requested	$ 140,000,000
Return on equity, requested	10.50%
Rate-making equity ratio, requested	52.00%
FERC 2023 TFR Proceeding \| TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities			10,000,000.0				$ 9,700,000
FERC 2023 TFR Proceeding \| Evergy Kansas Central \| TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities			10,000,000.0				$ 9,700,000
FERC 2026 TFR Proceeding [Member] \| Evergy Kansas Central \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			21,600,000
FERC 2026 TFR Proceeding [Member] \| Evergy Metro \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year			$ 2,400,000
Subsequent Event \| A2025 Rate case proceedings \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
PublicUtilitiesAcceptedRefundOnEarningsOverApprovedReturnOnEquity				$ 0