Goodwill (Tables)

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in carrying amount of Talen Energy's goodwill by segment were as follows.

	East		West		Total
Balance at December 31, 2014 (a)	$	72	$	—	$	72
Provisional goodwill recognized during the period (b)	398		—		398
Balance at June 30, 2015 (a)	$	470	$	—	$	470

(a) There were no accumulated impairment losses related to goodwill.

(b) Recognized as a result of the acquisition of RJS Power. See Note 7 for additional information.