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Asset Retirement Obligations (Tables) | 3 Months Ended
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Mar. 31, 2016
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Change in Asset Retirement Obligation | The changes in the carrying amounts of Talen Energy's AROs were as follows.
Balance at December 31, 2015 | $ | 501 |
Accretion expense | 9 |
Changes in estimate of cash flow or settlement date | 1 |
Obligations settled | (1 | )
Balance at March 31, 2016 | $ | 510 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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