Consolidated Statements of Cash Flows - Evergy Kansas Central, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 685.6	$ 546.0	$ 336.5
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	861.7	618.8	371.7
Amortization of nuclear fuel	51.4	43.6	32.2
Amortization of deferred refueling outage	25.5	21.2	16.1
Amortization of corporate-owned life insurance	19.8	22.6	20.6
Non-cash compensation	16.3	29.9	8.8
Net deferred income taxes and credits	121.5	124.2	149.6
Allowance for equity funds used during construction	(2.2)	(3.1)	(2.0)
Payments for asset retirement obligations	(17.8)	(22.4)	(16.0)
Equity in earnings of equity method investees, net of income taxes	(9.8)	(5.4)	(6.7)
Income from corporate-owned life insurance	(29.6)	(2.3)	(2.8)
Other	(3.2)	(5.2)	(8.7)
Changes in working capital items:
Accounts receivable from subsidiaries	(23.1)	265.1	(2.1)
Accounts receivable pledged as collateral	26.0	(185.0)	0.0
Fuel inventory and supplies	29.9	54.7	7.2
Prepaid expenses and other current assets	43.4	(128.1)	55.8
Accounts payable	16.9	56.7	10.0
Accrued taxes	(8.2)	(76.4)	9.2
Other current liabilities	(59.4)	92.0	(118.0)
Changes in other assets	79.8	66.8	32.0
Changes in other liabilities	(75.5)	(15.9)	19.3
Cash Flows from Operating Activities	1,749.0	1,497.8	912.7
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(1,210.1)	(1,069.7)	(764.6)
Purchase of securities - trusts	(55.8)	(117.5)	(41.0)
Sale of securities - trusts	47.3	117.7	41.2
Investment in corporate-owned life insurance	(18.3)	(17.1)	(17.0)
Proceeds from investment in corporate-owned life insurance	161.7	6.8	4.2
Other investing activities	(5.1)	(17.6)	(3.6)
Cash Flows from (used in) Investing Activities	(1,080.3)	197.4	(780.8)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short term debt, net	(176.7)	(104.0)	(91.3)
Collateralized short-term debt, net	(26.0)	185.0	0.0
Proceeds from long-term debt	2,372.7	290.9	296.2
Retirements of long-term debt	(701.1)	(395.8)	(125.0)
Retirements of long-term debt of variable interest entities	(30.3)	(28.5)	(26.8)
Borrowings against cash surrender value of corporate-owned life insurance	59.4	56.5	55.1
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(127.5)	(3.9)	(1.0)
Cash dividends paid	(462.5)	(475.0)	(223.1)
Distributions to shareholders of noncontrolling interests	(8.6)	0.0	(5.8)
Other financing activities	(6.7)	(21.3)	(9.9)
Cash Flows from (used in) Financing Activities	(805.8)	(1,538.4)	(131.6)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(137.1)	156.8	0.3
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	160.3	3.5	3.2
End of period	23.2	160.3	3.5
Evergy Kansas Central
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	359.1	349.1	336.5
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	443.8	390.9	371.7
Amortization of nuclear fuel	25.6	26.0	32.2
Amortization of deferred refueling outage	12.8	13.7	16.1
Amortization of corporate-owned life insurance	19.8	22.6	20.6
Non-cash compensation	0.0	19.9	8.8
Net deferred income taxes and credits	11.6	(2.2)	149.6
Allowance for equity funds used during construction	0.0	(2.9)	(2.0)
Payments for asset retirement obligations	(14.8)	(12.0)	(16.0)
Equity in earnings of equity method investees, net of income taxes	(4.6)	(4.6)	(6.7)
Income from corporate-owned life insurance	(29.0)	(2.3)	(2.8)
Other	(5.5)	(5.4)	(8.7)
Changes in working capital items:
Accounts receivable from subsidiaries	(65.9)	207.9	(2.1)
Accounts receivable pledged as collateral	14.0	(185.0)	0.0
Fuel inventory and supplies	10.9	17.3	7.2
Prepaid expenses and other current assets	(11.7)	(134.2)	55.8
Accounts payable	6.9	(17.6)	10.0
Accrued taxes	20.2	(24.1)	9.2
Other current liabilities	12.1	88.3	(118.0)
Changes in other assets	47.0	42.7	32.0
Changes in other liabilities	(29.5)	(36.2)	19.3
Cash Flows from Operating Activities	822.8	751.9	912.7
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(596.1)	(713.3)	(764.6)
Purchase of securities - trusts	(21.8)	(99.4)	(41.0)
Sale of securities - trusts	21.6	104.2	41.2
Investment in corporate-owned life insurance	(17.6)	(17.1)	(17.0)
Proceeds from investment in corporate-owned life insurance	158.9	6.8	4.2
Other investing activities	(3.2)	(8.6)	(3.6)
Cash Flows from (used in) Investing Activities	(458.2)	(727.4)	(780.8)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short term debt, net	(162.5)	133.7	(91.3)
Collateralized short-term debt, net	(14.0)	185.0	0.0
Proceeds from long-term debt	294.7	121.9	296.2
Retirements of long-term debt	(300.0)	(121.9)	(125.0)
Retirements of long-term debt of variable interest entities	(30.3)	(28.5)	(26.8)
Borrowings against cash surrender value of corporate-owned life insurance	56.5	56.5	55.1
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(125.4)	(3.9)	(1.0)
Cash dividends paid	(110.0)	(305.1)	(223.1)
Distributions to shareholders of noncontrolling interests	(8.6)	0.0	(5.8)
Other financing activities	(4.3)	(21.2)	(9.9)
Cash Flows from (used in) Financing Activities	(403.9)	16.5	(131.6)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(39.3)	41.0	0.3
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	44.5	3.5	3.2
End of period	$ 5.2	$ 44.5	$ 3.5