Equity Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]

Equity compensation expense and associated income tax benefits

	Three Months Ended June 30						Year to Date June 30
		2017		2016			2017		2016
Great Plains Energy		(millions)
Equity compensation expense		$	1.4	$	(0.2	)	$	2.6	$	3.5
Income tax (expense) benefit		0.5		(0.2		)	1.1		1.3
KCP&L
Equity compensation expense		$	0.9	$	(0.2	)	$	1.7	$	2.3
Income tax (expense) benefit		0.4		(0.2		)	0.8		0.8

Performance share activity

	Performance Shares			Grant Date Fair Value*
Beginning balance January 1, 2017		625,100			$	28.13
Granted		236,433			31.26
Earned		(212,992	)		28.48
Forfeited		(95,065	)		29.25
Ending balance June 30, 2017		553,476			29.12

Restricted stock activity

	Nonvested Restricted Stock			Grant Date Fair Value*
Beginning balance January 1, 2017		249,672			$	27.20
Granted and issued		78,840			28.60
Vested		(102,975	)		27.10
Forfeited		(21,864	)		28.08
Ending balance June 30, 2017		203,673			27.70