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SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Schedule of Short Term Debt (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Short-term Debt [Line Items] |  |
Master Credit Facility | $ 2,500.0 | $ 2,500.0
Available Borrowings | 1,546.5 | 1,167.0
Evergy, Inc. |  |
Short-term Debt [Line Items] |  |
Master Credit Facility | 300.0 | 450.0
Available Borrowings | $ 299.3 | $ 449.3
Weighted Average Interest Rate on Short-Term Borrowings | 0.00% | 0.00%
Evergy Kansas Central |  |
Short-term Debt [Line Items] |  |
Master Credit Facility | $ 750.0 | $ 1,000.0
Available Borrowings | $ 518.6 | $ 227.9
Weighted Average Interest Rate on Short-Term Borrowings | 5.56% | 4.91%
Evergy Metro |  |
Short-term Debt [Line Items] |  |
Master Credit Facility | $ 750.0 | $ 350.0
Available Borrowings | $ 326.7 | $ 239.0
Weighted Average Interest Rate on Short-Term Borrowings | 5.58% | 5.02%
Evergy Missouri West |  |
Short-term Debt [Line Items] |  |
Master Credit Facility | $ 700.0 | $ 700.0
Available Borrowings | $ 401.9 | $ 250.8
Weighted Average Interest Rate on Short-Term Borrowings | 5.66% | 4.84%
Commercial Paper |  |
Short-term Debt [Line Items] |  |
Line of credit | $ 951.8 | $ 1,332.3
Commercial Paper | Evergy, Inc. |  |
Short-term Debt [Line Items] |  |
Line of credit | 0.0 | 0.0
Commercial Paper | Evergy Kansas Central |  |
Short-term Debt [Line Items] |  |
Line of credit | 230.4 | 772.1
Commercial Paper | Evergy Metro |  |
Short-term Debt [Line Items] |  |
Line of credit | 423.3 | 111.0
Commercial Paper | Evergy Missouri West |  |
Short-term Debt [Line Items] |  |
Line of credit | 298.1 | 449.2
Letters of Credit |  |
Short-term Debt [Line Items] |  |
Letters of Credit | 1.7 | 0.7
Letters of Credit | Evergy, Inc. |  |
Short-term Debt [Line Items] |  |
Letters of Credit | 0.7 | 0.7
Letters of Credit | Evergy Kansas Central |  |
Short-term Debt [Line Items] |  |
Letters of Credit | 1.0 | 0.0
Letters of Credit | Evergy Metro |  |
Short-term Debt [Line Items] |  |
Letters of Credit | 0.0 | 0.0
Letters of Credit | Evergy Missouri West |  |
Short-term Debt [Line Items] |  |
Letters of Credit | 0.0 | 0.0
Cash Borrowings |  |
Short-term Debt [Line Items] |  |
Line of credit | 0.0 | 0.0
Cash Borrowings | Evergy, Inc. |  |
Short-term Debt [Line Items] |  |
Line of credit | 0.0 | 0.0
Cash Borrowings | Evergy Kansas Central |  |
Short-term Debt [Line Items] |  |
Line of credit | 0.0 | 0.0
Cash Borrowings | Evergy Metro |  |
Short-term Debt [Line Items] |  |
Line of credit | 0.0 | 0.0
Cash Borrowings | Evergy Missouri West |  |
Short-term Debt [Line Items] |  |
Line of credit | $ 0.0 | $ 0.0

X
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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