Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities
Net income	$ 58.4	$ 63.3
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	170.5	163.3
Amortization of:
Nuclear fuel	16.7	10.0
Other	27.9	23.6
Deferred income taxes, net	26.8	31.3
Investment tax credit amortization	(0.7)	(0.7)
Income from equity investments, net of income taxes	(1.4)	(0.7)
Fair value impacts of interest rate swaps	77.0	0.0
Other operating activities (Note 3)	(78.6)	(73.4)
Net cash from operating activities	296.6	216.7
Cash Flows from Investing Activities
Utility capital expenditures	(302.4)	(366.8)
Allowance for borrowed funds used during construction	(3.2)	(3.6)
Purchases of nuclear decommissioning trust investments	(16.0)	(22.3)
Proceeds from nuclear decommissioning trust investments	14.4	20.7
Other investing activities	(34.8)	(24.6)
Net cash from investing activities	(342.0)	(396.6)
Cash Flows from Financing Activities
Issuance of common stock	1.5	1.6
Issuance fees	(51.4)	0.0
Repayment of long-term debt	(1.1)	(15.1)
Net change in short-term borrowings	180.4	278.0
Net change in collateralized short-term borrowings	(1.3)	(8.0)
Dividends paid	(81.9)	(76.4)
Purchase of treasury stock	(4.9)	(1.5)
Other financing activities	0.0	0.5
Net cash from financing activities	41.3	179.1
Net Change in Cash and Cash Equivalents	(4.1)	(0.8)
Cash and Cash Equivalents at Beginning of Year	11.3	13.0
Cash and Cash Equivalents at End of Period	7.2	12.2
Kansas City Power and Light Company [Member]
Cash Flows from Operating Activities
Net income	90.5	42.6
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	122.2	116.3
Amortization of:
Nuclear fuel	16.7	10.0
Other	16.8	14.1
Deferred income taxes, net	47.0	20.6
Investment tax credit amortization	(0.5)	(0.5)
Other operating activities (Note 3)	19.9	14.9
Net cash from operating activities	312.6	218.0
Cash Flows from Investing Activities
Utility capital expenditures	(196.5)	(297.4)
Allowance for borrowed funds used during construction	(2.3)	(2.5)
Purchases of nuclear decommissioning trust investments	(16.0)	(22.3)
Proceeds from nuclear decommissioning trust investments	14.4	20.7
Other investing activities	(14.6)	(15.4)
Net cash from investing activities	(215.0)	(316.9)
Cash Flows from Financing Activities
Issuance fees	(0.2)	0.0
Repayment of long-term debt	0.0	(14.0)
Net change in short-term borrowings	(75.2)	125.7
Net money pool borrowings	0.0	(12.6)
Dividends paid	(22.0)	0.0
Net cash from financing activities	(97.4)	99.1
Net Change in Cash and Cash Equivalents	0.2	0.2
Cash and Cash Equivalents at Beginning of Year	2.3	2.7
Cash and Cash Equivalents at End of Period	$ 2.5	$ 2.9