Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2015

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Income (Loss) [Text Block]

20. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following tables reflect the change in the balances of each component of accumulated other comprehensive loss for Great Plains Energy and KCP&L.

Great Plains Energy
	Gains and Losses on Cash Flow Hedges(a)				Defined Benefit Pension Items(a)				Total(a)
	(millions)
2015
Beginning balance January 1		$	(15.8	)		$	(2.9	)	$	(18.7	)
Other comprehensive income before reclassifications		—				0.6			0.6
Amounts reclassified from accumulated other comprehensive loss		5.7				0.4			6.1
Net current period other comprehensive income		5.7				1.0			6.7
Ending balance December 31		$	(10.1	)		$	(1.9	)	$	(12.0	)
2014
Beginning balance January 1		$	(23.8	)		$	(1.5	)	$	(25.3	)
Other comprehensive loss before reclassifications		—				(1.8		)	(1.8		)
Amounts reclassified from accumulated other comprehensive loss		8.0				0.4			8.4
Net current period other comprehensive income		8.0				(1.4		)	6.6
Ending balance December 31		$	(15.8	)		$	(2.9	)	$	(18.7	)

^(a) Net of tax

KCP&L
	Gains and Losses on Cash Flow Hedges(a)
	(millions)
2015
Beginning balance January 1		$	(14.9	)
Amounts reclassified from accumulated other comprehensive loss		5.3
Net current period other comprehensive income		5.3
Ending balance December 31		$	(9.6	)
2014
Beginning balance January 1		$	(20.2	)
Amounts reclassified from accumulated other comprehensive loss		5.3
Net current period other comprehensive income		5.3
Ending balance December 31		$	(14.9	)

^(a) Net of tax

The following tables reflect the effect on certain line items of net income from amounts reclassified out of each component of accumulated other comprehensive loss for Great Plains Energy and KCP&L.

Great Plains Energy
Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss						Affected Line Item in the Income Statement
	2015			2014
	(millions)
Gains and (losses) on cash flow hedges (effective portion)
Interest rate contracts	$	(9.2	)	$	(13.1	)	Interest charges
	(9.2		)	(13.1		)	Income before income tax expense and income (loss) from equity investments
	3.5			5.1			Income tax benefit
	$	(5.7	)	$	(8.0	)	Net income
Amortization of defined benefit pension items
Net losses included in net periodic benefit costs	$	(0.7	)	$	(0.6	)	Utility operating and maintenance expenses
	(0.7		)	(0.6		)	Income before income tax expense and income (loss) from equity investments
	0.3			0.2			Income tax benefit
	$	(0.4	)	$	(0.4	)	Net income
Total reclassifications, net of tax	$	(6.1	)	$	(8.4	)	Net income

KCP&L
Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss						Affected Line Item in the Income Statement
	2015			2014
	(millions)
Gains and (losses) on cash flow hedges (effective portion)
Interest rate contracts	$	(8.7	)	$	(8.7	)	Interest charges
	(8.7		)	(8.7		)	Income before income tax expense
	3.4			3.4			Income tax benefit
Total reclassifications, net of tax	$	(5.3	)	$	(5.3	)	Net income