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SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) - Cash Borrowings | Dec. 31, 2020 USD ($)
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Short-term Debt [Line Items] |
Line of credit, maximum borrowing capacity | $ 2,500,000,000
Debt instrument, debt default, threshold | $ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than) | 65.00%
Evergy Kansas Central |
Short-term Debt [Line Items] |
Debt instrument, debt default, threshold | $ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than) | 65.00%
Evergy Metro |
Short-term Debt [Line Items] |
Debt instrument, debt default, threshold | $ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than) | 65.00%
Evergy Missouri West |
Short-term Debt [Line Items] |
Debt instrument, debt default, threshold | $ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than) | 65.00%

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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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