Asset Retirement Obligations

9 Months Ended

Sep. 30, 2015

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

Asset Retirement Obligations

The changes in the carrying amounts of Talen Energy's AROs were as follows.

Balance at December 31, 2014	$	425
Accretion expense	25
Changes in estimate of cash flow or settlement date	21
Obligations assumed in RJS Power acquisition	11
Obligations incurred	3
Obligations settled	(2		)
Balance at September 30, 2015	$	483

Substantially all of the ARO balances are classified as noncurrent at September 30, 2015 and December 31, 2014.         

Talen Energy's most significant ARO recorded relates to the decommissioning of the Susquehanna nuclear plant. See Notes 13 and 17 for additional information on the assets in the NDT funds that are legally restricted for the purposes of settling this ARO.