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MERGER OF GREAT PLAINS ENERGY AND EVERGY KANSAS CENTRAL - Schedule Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Jun. 04, 2018
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 2,336.6 | $ 2,336.6 |
Great Plains Energy |  |  |
Business Acquisition [Line Items] |  |  |
Current assets |  |  | $ 2,151.7
Property, plant and equipment, net |  |  | 9,179.7
Goodwill |  |  | 2,336.6
Other long-term assets, excluding goodwill |  |  | 1,235.9
Total assets |  |  | 14,903.9
Current liabilities |  |  | 1,673.9
Long-term liabilities, excluding long-term debt |  |  | 2,895.7
Long-term debt, net |  |  | 3,358.6
Total liabilities |  |  | 7,928.2
Total purchase price |  |  | $ 6,975.7

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