Consolidated Statements of Income - Evergy Kansas Central, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING REVENUES	$ 5,147.8	$ 4,275.9	$ 2,571.0
OPERATING EXPENSES:
Fuel and purchased power	1,265.0	1,078.7	541.5
SPP network transmission costs	251.3	259.9	247.9
Operating and maintenance	1,218.5	1,115.8	563.5
Depreciation and amortization	861.7	618.8	371.7
Taxes other than income tax	365.5	269.1	167.6
Total Operating Expenses	3,962.0	3,342.3	1,892.2
INCOME FROM OPERATIONS	1,185.8	933.6	678.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	11.0	8.8	4.0
Other income	26.9	15.5	8.3
Other expense	(76.9)	(78.7)	(39.1)
Total Other Expense, Net	(39.0)	(54.4)	(26.8)
Interest expense	374.0	279.6	171.0
INCOME BEFORE INCOME TAXES	772.8	599.6	481.0
Income tax expense (benefit)	97.0	59.0	151.2
Equity in earnings of equity method investees, net of income taxes	9.8	5.4	6.7
NET INCOME	685.6	546.0	336.5
Less: Net income attributable to noncontrolling interests	15.7	10.2	12.6
Net income attributable to Evergy, Inc.	669.9	535.8	323.9
Evergy Kansas Central
OPERATING REVENUES	2,507.4	2,614.9	2,571.0
OPERATING EXPENSES:
Fuel and purchased power	493.0	599.2	541.5
SPP network transmission costs	251.3	259.9	247.9
Operating and maintenance	530.5	640.7	563.5
Depreciation and amortization	443.8	390.9	371.7
Taxes other than income tax	192.3	173.7	167.6
Total Operating Expenses	1,910.9	2,064.4	1,892.2
INCOME FROM OPERATIONS	596.5	550.5	678.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	4.1	(0.6)	4.0
Other income	23.1	13.9	8.3
Other expense	(40.1)	(46.8)	(39.1)
Total Other Expense, Net	(12.9)	(33.5)	(26.8)
Interest expense	177.0	176.8	171.0
INCOME BEFORE INCOME TAXES	406.6	340.2	481.0
Income tax expense (benefit)	52.1	(4.3)	151.2
Equity in earnings of equity method investees, net of income taxes	4.6	4.6	6.7
NET INCOME	359.1	349.1	336.5
Less: Net income attributable to noncontrolling interests	15.7	10.2	12.6
Net income attributable to Evergy, Inc.	$ 343.4	$ 338.9	$ 323.9