Taxes (Tables)

3 Months Ended

Mar. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Great Plains Energy
Three Months Ended March 31	2014			2013
Current income taxes	(millions)
Federal	$	0.3		$	(0.1	)
State	0.1			(0.1		)
Total	0.4			(0.2		)
Deferred income taxes
Federal	6.6			9.9
State	1.7			2.3
Total	8.3			12.2
Noncurrent income taxes
Foreign	(0.2		)	(0.1		)
Investment tax credit amortization	(0.4		)	(0.4		)
Income tax expense	$	8.1		$	11.5

KCP&L
Three Months Ended March 31	2014			2013
Current income taxes	(millions)
Federal	$	2.7		$	(0.3	)
State	0.5			—
Total	3.2			(0.3		)
Deferred income taxes
Federal	0.4			4.0
State	0.6			1.3
Total	1.0			5.3
Noncurrent income taxes
Federal	—			0.6
State	—			0.1
Total	—			0.7
Investment tax credit amortization	(0.2		)	(0.3		)
Income tax expense	$	4.0		$	5.4

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Great Plains Energy
Three Months Ended March 31	2014		2013
Federal statutory income tax rate	35.0	%	35.0	%
Differences between book and tax depreciation not normalized	(1.8	)	1.4
Amortization of investment tax credits	(1.2	)	(1.1	)
Federal income tax credits	(9.1	)	(7.9	)
State income taxes	3.8		4.2
Changes in uncertain tax positions, net	(0.6	)	(0.7	)
Other	(0.7	)	(0.2	)
Effective income tax rate	25.4	%	30.7	%

KCP&L
Three Months Ended March 31	2014		2013
Federal statutory income tax rate	35.0	%	35.0	%
Differences between book and tax depreciation not normalized	(3.7	)	1.6
Amortization of investment tax credits	(1.2	)	(1.2	)
Federal income tax credits	(13.8	)	(13.8	)
State income taxes	3.4		4.0
Other	(1.1	)	(0.7	)
Effective income tax rate	18.6	%	24.9	%

Summary of Income Tax Contingencies [Table Text Block]

	March 31 2014				December 31 2013
	(millions)
Beginning balance January 1		$	9.8			$	21.4
Reductions for current year tax positions		(0.1		)		(0.3		)
Reductions for prior year tax positions		—				(10.5		)
Statute expirations		—				(0.3		)
Foreign currency translation adjustments		(0.2		)		(0.5		)
Ending balance		$	9.5			$	9.8