Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

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, 2023 and 2022 (in millions):

	Renewables SBU		Utilities SBU		Energy Infrastructure SBU		New Energy Technologies SBU		Total
Balance as of December 31, 2022
Goodwill	$	355	$	2,709	$	683	$	3	$	3,750
Accumulated impairment losses	(35)		(2,709)		(644)		—		(3,388)
Net balance	320		—		39		3		362
Impairment losses	—		—		(12)		—		(12)
Goodwill derecognized during the year	(2)		—		—		—		(2)
Balance as of December 31, 2023
Goodwill	353		2,709		683		3		3,748
Accumulated impairment losses	(35)		(2,709)		(656)		—		(3,400)
Net balance	$	318	$	—	$	27	$	3	$	348

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, 2023						December 31, 2022
	Gross Balance		Accumulated Amortization		Net Balance		Gross Balance		Accumulated Amortization		Net Balance
Subject to Amortization
Internal-use software	$	696	$	(324)	$	372	$	582	$	(307)	$	275
Contracts	337		(37)		300		342		(40)		302
Project development rights (1)	1,222		(43)		1,179		991		(17)		974
Emissions allowances (2)	50		—		50		37		—		37
Concession rights	222		(71)		151		207		(50)		157
Land use rights	119		(3)		116		20		(1)		19
Other (3)	45		(20)		25		37		(19)		18
Subtotal	2,691		(498)		2,193		2,216		(434)		1,782
Indefinite-Lived Intangible Assets
Land use rights	22		—		22		42		—		42
Transmission rights	20		—		20		16		—		16
Other	8		—		8		1		—		1
Subtotal	50		—		50		59		—		59
Total	$	2,741	$	(498)	$	2,243	$	2,275	$	(434)	$	1,841

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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, 2023	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	159	Subject to Amortization	15	Straight-line
Contracts	12		Subject to Amortization	21	Straight-line
Project development rights	242		Subject to Amortization	39	Straight-line
Emissions allowances	23		Subject to Amortization	Various	As utilized
Land use rights	91		Various	N/A	Various
Other	9		Various	N/A	N/A
Total	$	536

December 31, 2022	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	136	Subject to Amortization	14	Straight-line
Contracts	196		Subject to Amortization	23	Straight-line
Project development rights	67		Subject to Amortization	4	Straight-line
Emissions allowances	35		Subject to Amortization	Various	As utilized
Land use rights	13		Indefinite-Lived	N/A	N/A
Other	1		Subject to Amortization	N/A	N/A
Total	$	448

Schedule of Expected Amortization Expense

The following table summarizes the estimated amortization expense by intangible asset category for 2024 through 2028:

(in millions)	2024		2025		2026		2027		2028
Internal-use software	$	42	$	39	$	37	$	34	$	34
Contracts	21		17		17		17		17
Concession rights	17		17		17		17		17
Project development rights	10		10		12		12		12
Other	2		6		6		4		5
Total	$	92	$	89	$	89	$	84	$	85