v3.26.1
ORGANIZATION AND BASIS OF PRESENTATION - Other Income And Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Entity Information [Line Items]        
AFUDC equity $ 12.5 $ 3.4 $ 22.9 $ 5.9
Corporate-owned life insurance policy benefit 1.3 6.5 9.0 7.8
Income from commercial solar project 0.0 11.6 0.0 11.6
Other income 0.7 0.8 1.4 1.4
Other income, total 14.5 22.3 33.3 26.7
Non-service cost component of net benefit cost (2.0) (1.9) (4.0) (5.0)
Corporate-owned life insurance cost (4.3) (4.7) (10.6) (10.5)
Other expense (0.5) (2.2) (0.9) (2.8)
Other expense, total (6.8) (8.8) (15.5) (18.3)
Evergy Kansas Central        
Entity Information [Line Items]        
AFUDC equity 8.1 3.0 14.7 4.4
Corporate-owned life insurance policy benefit 0.8 6.7 8.5 7.5
Other income 0.3 0.3 0.7 0.6
Other income, total 9.2 10.0 23.9 12.5
Non-service cost component of net benefit cost 1.6 1.1 3.2 1.7
Corporate-owned life insurance cost (4.1) (4.6) (10.1) (10.1)
Other expense (0.1) (0.2) (0.2) (0.4)
Other expense, total (2.6) (3.7) (7.1) (8.8)
Evergy Metro        
Entity Information [Line Items]        
AFUDC equity 0.9 0.4 1.4 1.5
Other income 0.7 0.1 0.9 0.8
Other income, total 1.6 0.5 2.3 2.3
Non-service cost component of net benefit cost (2.3) (1.6) (4.7) (4.1)
Corporate-owned life insurance cost (0.2) (0.1) (0.5) (0.4)
Other expense (0.3) (0.5) (0.4) (0.6)
Other expense, total $ (2.8) $ (2.2) $ (5.6) $ (5.1)