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RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Evergy Metro
Related Party Transaction [Line Items]
Due to Related Parties, Current	$ 0.5		$ 0.9
Evergy Metro | Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Parties, Current			31.0
Evergy Metro | Evergy Missouri West
Related Party Transaction [Line Items]
Due from (to) related parties	84.5		137.5
Evergy Metro | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	26.8	$ 32.7
Evergy Metro | Evergy Kansas Central
Related Party Transaction [Line Items]
Due from (to) related parties	22.2		15.7
Evergy Metro | Evergy Kansas Central | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	28.9	33.4
Evergy Metro | Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	17.2		16.3
Evergy Metro | Evergy | Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	3.7
Evergy Metro | Evergy | Income Taxes Payable
Related Party Transaction [Line Items]
Due from (to) related parties			0.2
Evergy Kansas Central
Related Party Transaction [Line Items]
Due to Related Parties, Current	35.3		28.9
Evergy Kansas Central | Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Parties, Current	0.0
Evergy Kansas Central | Evergy Missouri West
Related Party Transaction [Line Items]
Due from (to) related parties	5.9		7.4
Evergy Kansas Central | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	6.2	7.4
Evergy Kansas Central | Evergy Metro
Related Party Transaction [Line Items]
Due from (to) related parties	(22.1)		(15.7)
Evergy Kansas Central | Evergy Metro | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	10.9	$ 6.6
Evergy Kansas Central | Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	(12.6)		(12.7)
Evergy Kansas Central | Evergy | Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties			$ (10.3)
Evergy Kansas Central | Evergy | Income Taxes Payable
Related Party Transaction [Line Items]
Due from (to) related parties	$ (30.7)
Jointly Owned Electricity Generation Plant Iatan No 1 And 2 | Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	18.00%
Jeffrey Energy Center | Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8.00%
La Cygne Station | Evergy Kansas Central
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50.00%

X

- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Amount of transactions with related party during the financial reporting period.

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