v3.19.3.a.u2

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Jointly Owned Utility Plants

The following table summarizes our proportionate ownership interest in jointly-owned power plants:

As of December 31, 2019		Ownership Interest			Property, Plant & Equipment				Accumulated Depreciation				Construction in Progress
(in millions, except percentages)
Freestone Energy Center		75.0	%		$	379			$	(177	)		$	—
Hidalgo Energy Center		78.5	%		$	250			$	(113	)		$	—

Schedule of Components of Restricted Cash

The table below represents the components of our restricted cash as of December 31, 2019 and 2018 (in millions):

	2019												2018
	Current				Non-Current				Total				Current				Non-Current				Total
Debt service	$	58			$	8			$	66			$	13			$	8			$	21
Construction/major maintenance	28				6				34				23				24				47
Security/project/insurance	209				31				240				120				—				120
Other	4				1				5				11				2				13
Total	$	299			$	46			$	345			$	167			$	34			$	201

Schedule of Intangible Assets and Goodwill [Table Text Block]

As of December 31, 2019 and 2018, the components of our intangible assets were as follows (in millions):

	2019				2018				Lives
Acquired contracts	$	444			$	458			0 – 9 Years
Customer relationships	445				445				7 – 14 Years
Trademark and trade name	40				40				15 Years
Other	4				88				39 – 44 Years
	933				1,031
Less: Accumulated amortization	593				619
Intangible assets, net	$	340			$	412

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The estimated aggregate amortization expense of our intangible assets for the next five years is as follows (in millions):

2020	$	44
2021	$	39
2022	$	36
2023	$	28
2024	$	28

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Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.

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