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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

			Three months ended September 30, 2020
(In millions)			Conventional Generation						Renewables						Thermal						Corporate						Total
Operating revenues			$	116					$	157					$	59					$	—					$	332
Cost of operations			21						33						41						—						95
Depreciation, amortization and accretion			34						61						7						—						102
General and administrative			—						—						1						8						9
Transaction and integration costs			—						—						—						1						1
Development costs			—						—						2						—						2
Operating income (loss)			61						63						8						(9)						123
Equity in earnings of unconsolidated affiliates			3						16						—						—						19
Other income, net			1						—						(1)						—						—
Loss on debt extinguishment			—						(6)						—						—						(6)
Interest expense			(17)						(39)						(6)						(23)						(85)
Income (loss) before income taxes			48						34						1						(32)						51
Income tax expense			—						—						—						9						9
Net Income (Loss)			$	48					$	34					$	1					$	(41)					$	42
Total Assets			$	2,615					$	6,210					$	627					$	273					$	9,725

			Three months ended September 30, 2019
(In millions)			Conventional Generation						Renewables						Thermal						Corporate						Total
Operating revenues			$	90					$	151					$	55					$	—					$	296
Cost of operations			13						35						36						—						84
Depreciation, amortization and accretion			26						81						7						—						114
General and administrative			—						1						1						5						7
Development costs			—						—						1						—						1
Operating income (loss)			51						34						10						(5)						90
Equity in earnings of unconsolidated affiliates			3						35						—						—						38
Other income, net			—						2						—						—						2
Interest expense			(13)						(65)						(5)						(23)						(106)
Income (loss) before income taxes			41						6						5						(28)						24
Income tax benefit			—						—						—						(11)						(11)
Net Income (Loss)			$	41					$	6					$	5					$	(17)					$	35

			Nine months ended September 30, 2020
(In millions)			Conventional Generation						Renewables						Thermal						Corporate						Total
Operating revenues			$	326					$	444					$	149					$	—					$	919
Cost of operations			67						108						100						—						275
Depreciation, amortization and accretion			100						182						21						—						303
General and administrative			—						1						4						25						30
Transaction and integration costs			—						—						—						2						2
Development costs			—						—						4						—						4
Operating income (loss)			159						153						20						(27)						305
Equity in earnings of unconsolidated affiliates			6						16						—						—						22
Gain on sale of unconsolidated affiliate			—						—						—						49						49
Other income, net			1						1						—						—						2
Loss on debt extinguishment			—						(6)						—						(3)						(9)
Interest expense			(69)						(190)						(16)						(70)						(345)
Income (loss) before income taxes			97						(26)						4						(51)						24
Income tax expense			—						—						—						13						13
Net Income (Loss)			$	97					$	(26)					$	4					$	(64)					$	11

			Nine months ended September 30, 2019
(In millions)			Conventional Generation						Renewables						Thermal						Corporate						Total
Operating revenues			$	253					$	392					$	152					$	—					$	797
Cost of operations			44						102						99						—						245
Depreciation, amortization and accretion			75						194						20						—						289
Impairment losses			—						—						19						—						19
General and administrative			—						1						2						17						20
Transaction and integration costs			—						—						—						2						2
Development costs			—						—						4						—						4
Operating income (loss)			134						95						8						(19)						218
Equity in earnings of unconsolidated affiliates			7						45						—						—						52
Other income, net			1						4						—						1						6
Loss on debt extinguishment			—						(1)						—						—						(1)
Interest expense			(45)						(213)						(13)						(66)						(337)
Income (loss) before income taxes			97						(70)						(5)						(84)						(62)
Income tax benefit			—						—						—						(14)						(14)
Net Income (Loss)			$	97					$	(70)					$	(5)					$	(70)					$	(48)

X

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599

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