Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2016

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

Schedule of changes in AOCI by component

The after-tax changes in Talen Energy's AOCI by component for the periods ended March 31 were as follows.



	Unrealized gains (losses)						Defined benefit plans
	Available- for-sale securities			Qualifying derivatives			Prior service costs		Actuarial gain (loss)			Total
December 31, 2015	$	194		$	44		$	3	$	(267	)	$	(26	)
Amounts arising during the period	3			—			—		—			3
Reclassifications from AOCI	1			(3		)	—		3			1
Net OCI during the period	4			(3		)	—		3			4
March 31, 2016	$	198		$	41		$	3	$	(264	)	$	(22	)

December 31, 2014	$	202		$	63		$	7	$	(295	)	$	(23	)
Amounts arising during the period	5			—			—		—			5
Reclassifications from AOCI	(1		)	(4		)	—		4			(1		)
Net OCI during the period	4			(4		)	—		4			4
March 31, 2015	$	206		$	59		$	7	$	(291	)	$	(19	)

Reclassification from AOCI

The following table presents the gains (losses) and related income taxes for reclassifications from Talen Energy's AOCI for the periods ended March 31. The defined benefit plan components of AOCI are not reflected in their entirety in the statement of income during the periods; rather, they are included in the computation of net periodic defined benefit costs (credits). See Note 8 for additional information.



	Three Months						Affected Line Item on the
Details about AOCI	2016			2015			Statements of Income
Available-for-sale securities	$	(2	)	$	2		Other Income (Expense) - net
Income Taxes	1			(1		)
Total After-tax	(1		)	1

Qualifying derivatives
Commodity contracts	(3		)	(2		)	Wholesale energy
	8			8			Fuel and energy purchases
	—			1			Other
Total Pre-tax	5			7
Income Taxes	(2		)	(3		)
Total After-tax	3			4

Defined benefit plans
Net actuarial loss	(5		)	(7		)
Total Pre-tax	(5		)	(7		)
Income Taxes	2			3
Total After-tax	(3		)	(4		)
Total reclassifications during the period	$	(1	)	$	1