Consolidated Balance Sheets - Evergy Kansas Central, Inc - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 27.7	$ 25.2
Receivables, net of allowance for credit losses of $11.6 and $16.9, respectively	256.9	315.3
Accounts receivable pledged as collateral	342.0	359.0
Fuel inventory and supplies	776.2	672.9
Income taxes receivable	11.5	9.3
Regulatory assets	292.1	368.0
Prepaid expenses	51.3	47.8
Other assets	31.4	44.5
Total Current Assets	1,789.1	1,842.0
PROPERTY, PLANT AND EQUIPMENT, NET	23,595.1	22,136.5
OTHER ASSETS:
Regulatory assets	1,795.3	1,846.3
Nuclear decommissioning trust fund	766.4	653.3
Other	560.0	534.5
Total Other Assets	5,458.3	5,370.7
TOTAL ASSETS	30,976.1	29,489.9
CURRENT LIABILITIES:
Current maturities of long-term debt	800.0	439.1
Commercial paper	951.8	1,332.3
Collateralized note payable	342.0	359.0
Accounts payable	616.9	600.8
Accrued taxes	156.7	163.0
Accrued interest	134.2	124.3
Regulatory liabilities	183.0	155.4
Asset retirement obligations	40.3	40.4
Accrued compensation and benefits	74.5	81.1
Other	213.2	198.4
Total Current Liabilities	3,512.6	3,493.8
LONG-TERM LIABILITIES:
Long-term debt, net	11,053.3	9,905.7
Deferred income taxes	2,097.9	1,996.6
Unamortized investment tax credits	170.0	174.6
Regulatory liabilities	2,542.5	2,566.8
Pension and post-retirement liability	464.1	458.4
Asset retirement obligations	1,162.8	1,112.8
Other	287.9	287.9
Total Long-Term Liabilities	17,778.5	16,502.8
Commitments and Contingencies (Note 15)
Evergy, Inc. Shareholders' Equity:
Common stock	7,234.9	7,219.7
Retained earnings	2,457.8	2,298.5
Total Evergy, Inc. Shareholders' Equity	9,663.1	9,483.7
Noncontrolling Interests	21.9	9.6
Total Equity	9,685.0	9,493.3
TOTAL LIABILITIES AND EQUITY	30,976.1	29,489.9
Evergy Kansas Central
CURRENT ASSETS:
Cash and cash equivalents	9.2	8.7
Receivables, net of allowance for credit losses of $11.6 and $16.9, respectively	171.8	249.4
Accounts receivable pledged as collateral	166.0	185.0
Fuel inventory and supplies	411.9	349.5
Income taxes receivable	11.5	0.0
Regulatory assets	127.7	121.9
Prepaid expenses	22.9	18.7
Other assets	13.2	28.8
Total Current Assets	945.8	969.9
PROPERTY, PLANT AND EQUIPMENT, NET	11,988.3	11,080.8
OTHER ASSETS:
Regulatory assets	505.2	590.0
Nuclear decommissioning trust fund	365.1	318.8
Other	288.6	268.1
Total Other Assets	1,158.9	1,176.9
TOTAL ASSETS	14,226.6	13,368.3
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	50.0
Commercial paper	230.4	772.1
Collateralized note payable	166.0	185.0
Accounts payable	244.7	247.3
Accrued taxes	111.1	125.5
Accrued interest	79.7	72.6
Regulatory liabilities	104.1	72.1
Asset retirement obligations	22.2	21.3
Accrued compensation and benefits	37.6	39.4
Other	142.4	135.0
Total Current Liabilities	1,432.6	1,749.2
LONG-TERM LIABILITIES:
Long-term debt, net	4,580.4	3,886.9
Deferred income taxes	844.2	844.5
Unamortized investment tax credits	56.2	57.3
Regulatory liabilities	1,432.4	1,368.9
Pension and post-retirement liability	256.3	244.7
Asset retirement obligations	577.1	543.8
Other	155.5	165.6
Total Long-Term Liabilities	7,902.1	7,111.7
Commitments and Contingencies (Note 15)
Evergy, Inc. Shareholders' Equity:
Common stock	2,737.6	2,737.6
Retained earnings	2,132.4	1,760.2
Total Evergy, Inc. Shareholders' Equity	4,870.0	4,497.8
Noncontrolling Interests	21.9	9.6
Total Equity	4,891.9	4,507.4
TOTAL LIABILITIES AND EQUITY	14,226.6	13,368.3
Related Party [Member] | Evergy Kansas Central
CURRENT ASSETS:
Related party receivables	11.6	7.9
CURRENT LIABILITIES:
Accounts payable	294.4	28.9
Variable Interest Entities
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	133.6	140.7
Variable Interest Entities | Evergy Kansas Central
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	$ 133.6	$ 140.7