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Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Allowance for uncollectible accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance At Beginning Of Period | $ 31.4 | $ 32.9 | $ 19.3
Additions Charged To Costs And Expenses | 15.4 | 16.1 | 28.0
Additions Charged To Other Accounts | 10.7 | 11.2 | 12.0
Deductions | 33.3 | 28.8 | 26.4
Balance At End Of Period | 24.2 | 31.4 | 32.9
Allowance for uncollectible accounts | Evergy Kansas Central |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance At Beginning Of Period | 16.9 | 13.0 | 7.5
Additions Charged To Costs And Expenses | 7.7 | 13.1 | 12.0
Additions Charged To Other Accounts | 4.7 | 4.5 | 4.5
Deductions | 17.7 | 13.7 | 11.0
Balance At End Of Period | 11.6 | 16.9 | 13.0
Allowance for uncollectible accounts | Evergy Metro |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance At Beginning Of Period | 9.3 | 13.3 | 8.1
Additions Charged To Costs And Expenses | 5.0 | 1.7 | 10.5
Additions Charged To Other Accounts | 4.1 | 4.5 | 5.3
Deductions | 10.5 | 10.2 | 10.6
Balance At End Of Period | 7.9 | 9.3 | 13.3
Tax valuation allowance |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance At Beginning Of Period | 12.8 | 12.8 | 14.4
Additions Charged To Costs And Expenses | 3.5 | 0.1 | 0.0
Additions Charged To Other Accounts | 0.0 | 0.0 | 0.0
Deductions | 1.5 | 0.1 | 1.6
Balance At End Of Period | 14.8 | 12.8 | $ 12.8
Tax valuation allowance | Evergy Kansas Central |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance At Beginning Of Period | 0.0 |  |
Additions Charged To Costs And Expenses | 2.7 |  |
Additions Charged To Other Accounts | 0.0 |  |
Deductions | 0.0 |  |
Balance At End Of Period | $ 2.7 | $ 0.0 |

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 + Details
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