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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

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- Definition

Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (e)
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount before tax of income (loss) from an individually significant component disposed of or held-for-sale attributable to parent. Excludes discontinued operations.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Acquisitions, Development and Divestitures (Divestitures) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Apr. 30, 2016	Feb. 29, 2016	Mar. 31, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain) loss on sale			$ (140)	$ 0
Proposed Bell Bend Nuclear Unit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capitalized costs associated with licensing efforts			204
Disposal Group, Held-for-sale, Not Discontinued Operations \| Talen Ironwood Holdings, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received		$ 657
(Gain) loss on sale		(148)
Individually significant component pretax income (loss)			4	$ 18
Disposal Group, Held-for-sale, Not Discontinued Operations \| C.P. Crane, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain) loss on sale		$ 8
Disposal Group, Held-for-sale, Not Discontinued Operations \| Holtwood and Lake Wallenpaupack Hydroelectric Projects
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
PP&E related to business held for sale			$ 426
Disposal Group, Held-for-sale, Not Discontinued Operations \| Holtwood and Lake Wallenpaupack Hydroelectric Projects \| Scenario, Forecast
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain) loss on sale	$ (420)
Disposal Group, Held-for-sale, Not Discontinued Operations \| Holtwood and Lake Wallenpaupack Hydroelectric Projects \| Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received	$ 860