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LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows from operating leases | $ 20.1 | $ 21.1 | $ 20.7
Operating cash flows from finance leases | 2.3 | 2.4 | 2.6
Financing cash flows from finance leases | 6.6 | 5.9 | 5.3
Right-of-use assets obtained in exchange for new operating lease liabilities | 20.1 | 12.2 | 16.4
Right-of-use assets obtained in exchange for new finance lease liabilities | 11.9 | 7.0 | 1.4
Evergy Kansas Central |  |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows from operating leases | 9.9 | 11.4 | 11.8
Operating cash flows from finance leases | 2.1 | 2.2 | 2.4
Financing cash flows from finance leases | 5.7 | 5.1 | 4.7
Right-of-use assets obtained in exchange for new operating lease liabilities | 9.2 | 12.0 | 7.1
Right-of-use assets obtained in exchange for new finance lease liabilities | 10.2 | 7.0 | 1.4
Evergy Metro |  |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows from operating leases | 9.7 | 9.3 | 10.4
Operating cash flows from finance leases | 0.1 | 0.1 | 0.1
Financing cash flows from finance leases | 0.8 | 0.7 | 0.5
Right-of-use assets obtained in exchange for new operating lease liabilities | 9.9 | 0.2 | 9.3
Right-of-use assets obtained in exchange for new finance lease liabilities | $ 1.7 | $ 0.0 | $ 0.0

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