SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) - USD ($)	Sep. 30, 2022	Feb. 28, 2022
Cash Borrowings
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity	$ 2,500,000,000
Debt instrument, debt default, threshold	$ 100,000,000
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Term Loan Facility
Short-term Debt [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Term Loan Facility \| Unsecured Debt
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity		$ 500,000,000
Term Loan Facility Borrowings	$ 500,000,000
Weighted Average Interest Rate on Term Loan Facility	3.83%
Evergy Kansas Central \| Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Metro \| Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Missouri West \| Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000
Debt Instrument, debt to capitalization ratio (no more than)	65.00%

Debt Instrument, Covenant, Debt to Capitalization Ratio, Maximum

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- Definition

Debt Instrument, Debt Default, Threshold

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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-Publisher FASB
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-Topic 210
-SubTopic 10
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-Paragraph 1
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
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- Definition

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.

+ References

No definition available.

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- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

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