Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the carrying amount of goodwill by reportable segment for the years ended December 31, 2021 and 2020 (in millions):

	US and Utilities		South America		MCAC		Eurasia		Corporate and Other		Total
Balance as of December 31, 2020
Goodwill	$	2,788	$	868	$	16	$	—	$	—	$	3,672
Accumulated impairment losses	(2,611)		—		—		—		—		(2,611)
Net balance	177		868		16		—		—		1,061
Goodwill acquired during the year(1)	339		—		—		—		1		340
Goodwill derecognized during the year (2)	—		(224)		—		—		—		(224)
Balance as of December 31, 2021
Goodwill	3,127		644		16		—		1		3,788
Accumulated impairment losses	(2,611)		—		—		—		—		(2,611)
Net balance	$	516	$	644	$	16	$	—	$	1	$	1,177

Schedule of Finite-Lived and Indefinite-Lived Intangible Assets

The following table summarizes the balances comprising Other intangible assets in the accompanying Consolidated Balance Sheets (in millions) as of the periods indicated:

	December 31, 2021						December 31, 2020
	Gross Balance		Accumulated Amortization		Net Balance		Gross Balance		Accumulated Amortization		Net Balance
Subject to Amortization
Internal-use software	$	457	$	(279)	$	178	$	386	$	(255)	$	131
Contracts	183		(48)		135		157		(38)		119
Project development rights (1)	819		(8)		811		203		(5)		198
Emissions allowances (2)	18		—		18		64		—		64
Concession rights	195		(33)		162		201		(18)		183
Other (3)	111		(17)		94		59		(14)		45
Subtotal	1,783		(385)		1,398		1,070		(330)		740
Indefinite-Lived Intangible Assets
Land use rights	28		—		28		39		—		39
Water rights	3		—		3		20		—		20
Transmission rights	19		—		19		22		—		22
Other	2		—		2		6		—		6
Subtotal	52		—		52		87		—		87
Total	$	1,835	$	(385)	$	1,450	$	1,157	$	(330)	$	827

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(1)Includes emission offset fee to the Air Quality Management District ("AQMD") in order to transfer emission offsets from retired legacy Southland units to the new CCGT.

(2)Acquired or purchased emissions allowances are finite-lived intangible assets that are expensed when utilized and included in net income for the year.

(3)Includes management rights, renewable energy credits and incentives, and other individually insignificant intangible assets.

Schedule of Acquired Intangible Assets By Major Class

The following tables summarize other intangible assets acquired during the periods indicated (in millions):

December 31, 2021	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	89	Subject to Amortization	6	Straight-line
Contracts	35		Subject to Amortization	12	Straight-line
Project development rights	667		Subject to Amortization	35	Straight-line
Emissions allowances	22		Subject to Amortization	Various	As utilized
Transmission rights	—		Indefinite-Lived	N/A	N/A
Concession rights (1)	7		Subject to Amortization	12	Straight-line
Other	2		Various	N/A	N/A
Total	$	822

December 31, 2020	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	35	Subject to Amortization	4	Straight-line
Contracts	28		Subject to Amortization	20	Straight-line
Project development rights	109		Subject to Amortization	30	Straight-line
Emissions allowances	56		Subject to Amortization	Various	As utilized
Transmission rights	20		Indefinite-Lived	N/A	N/A
Concession rights (1)	184		Subject to Amortization	12	Straight-line
Other	22		Various	N/A	N/A
Total	$	454

Schedule of Expected Amortization Expense

The following table summarizes the estimated amortization expense by intangible asset category for 2022 through 2026:

(in millions)	2022		2023		2024		2025		2026
Internal-use software	$	32	$	28	$	27	$	25	$	24
Contracts	10		10		7		7		6
Concession rights	16		17		16		16		16
Other	6		7		7		7		8
Total	$	64	$	62	$	57	$	55	$	54