Other Income (Expense) - net	9 Months Ended
Sep. 30, 2015
Other Nonoperating Income (Expense) [Abstract]
Other Income (Expense) - net	Other Income (Expense) - net Talen Energy's "Other Income (Expense) - net" for the three and nine months ended September 30, 2015 and 2014 was primarily earnings on securities in NDT funds.

Disclosure of the detailed components of other nonoperating income and other nonoperating expenses. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), (d) miscellaneous other income items, (e) losses on securities (net of profits) and (f) miscellaneous income deductions.

No definition available.

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