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RECEIVABLES - Narrative (Details) - USD ($) $ in Millions	Feb. 28, 2024	Dec. 31, 2023
Evergy Metro
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		$ 130.0
Subsequent Event | Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	$ 185.0
Additional Amount of Outstanding Principal Under Receivables Agreement	65.0
Subsequent Event | Evergy Metro
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	130.0
Additional Amount of Outstanding Principal Under Receivables Agreement	70.0
Subsequent Event | Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	50.0
Additional Amount of Outstanding Principal Under Receivables Agreement	$ 65.0
Borrowings from mid November through mid July | Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		185.0
Borrowings from mid November through mid July | Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		50.0
Borrowings from mid July through mid November | Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		200.0
Borrowings from mid July through mid November | Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		$ 65.0

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