Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The following table summarizes the carrying amount of goodwill by reportable segment for the years ended December 31, 2019 and 2018 (in millions):



	US and Utilities			South America		MCAC		Eurasia				Total
Balance as of December 31, 2018
Goodwill	$	2,786		$	868	$	16	$	122			$	3,792
Accumulated impairment losses	(2,611		)	—		—		(122		)		(2,733		)
Net balance	175			868		16		—				1,059
Balance as of December 31, 2019
Goodwill	2,786			868		16		—			⁽¹⁾	3,670
Accumulated impairment losses	(2,611		)	—		—		—			⁽¹⁾	(2,611		)
Net balance	$	175		$	868	$	16	$	—			$	1,059

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, 2019							December 31, 2018
	Gross Balance		Accumulated Amortization			Net Balance		Gross Balance		Accumulated Amortization			Net Balance
Subject to Amortization
Internal-use software	$	367	$	(228	)	$	139	$	467	$	(344	)	$	123
Contracts	134		(29		)	105		137		(24		)	113
Project development rights	100		(1		)	99		93		(1		)	92
Contractual payment rights ⁽¹⁾	—		—			—		57		(44		)	13
Emissions allowances ⁽²⁾	24		—			24		15		—			15
Other ⁽³⁾	82		(49		)	33		78		(44		)	34
Subtotal	707		(307		)	400		847		(457		)	390
Indefinite-Lived Intangible Assets
Land use rights	21		—			21		21		—			21
Water rights	20		—			20		20		—			20
Transmission rights	23		—			23		—		—			—
Other	5		—			5		5		—			5
Subtotal	69		—			69		46		—			46
Total	$	776	$	(307	)	$	469	$	893	$	(457	)	$	436

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⁽¹⁾	Represent legal rights to receive system reliability payments from the regulator.


⁽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, sales concessions, 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, 2019	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	61	Subject to Amortization	5	Straight-line
Contracts	2		Subject to Amortization	35	Straight-line
Project development rights	8		Subject to Amortization	29	Straight-line
Emissions allowances	22		Subject to Amortization	Various	As utilized
Transmission rights	23		Indefinite-Lived	N/A	N/A
Other	5		Various	N/A	N/A
Total	$	121



December 31, 2018	Amount		Subject to Amortization/Indefinite-Lived	Weighted Average Amortization Period (in years)	Amortization Method
Internal-use software	$	67	Subject to Amortization	6	Straight-line
Contracts	50		Subject to Amortization	24	Straight-line
Project development rights	35		Subject to Amortization	23	Straight-line
Emissions allowances	16		Subject to Amortization	Various	As utilized
Other	11		Various	N/A	N/A
Total	$	179

Schedule of Expected Amortization Expense

The following table summarizes the estimated amortization expense by intangible asset category for 2020 through 2024:



(in millions)	2020		2021		2022		2023		2024
Internal-use software	$	34	$	31	$	22	$	17	$	15
Contracts	4		4		4		4		4
Other	6		5		5		5		5
Total	$	44	$	40	$	31	$	26	$	24