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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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ACQUISITIONS, DIVESTITURES AND DISCONTINUED OPERATIONS - ACQUISITION ACTIVITY (Details) $ / shares in Units, $ in Millions					6 Months Ended
	May 17, 2019 USD ($)	May 16, 2019 USD ($) $ / shares	Dec. 18, 2018 USD ($)	Mar. 09, 2018 USD ($)	Jun. 30, 2019 USD ($) MW
Oncor Electric Delivery Company LLC. [Member]
Business Acquisition [Line Items]
Acquired percentage interest				80.25%
Compania Transmisora del Norte Grande S.A. [Member]
Business Acquisition [Line Items]
Cash consideration			$ 208
Consideration			226
Cash acquired			$ 18
Sempra Texas Holdings Corp [Member] \| Oncor Electric Delivery Company LLC. [Member]
Business Acquisition [Line Items]
Acquired percentage interest				80.03%
Sempra Texas Holdings Corp [Member] \| Sempra Texas Intermediate Holding Company LLC [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Ownership percentage in consolidated entity				100.00%
Sempra Texas Holdings Corp [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Cash consideration				$ 9,450
Adjustment for dividends				$ 31
Sempra Texas Holdings Corp [Member] \| Oncor Holdings [Member] \| Oncor Electric Delivery Company LLC. [Member]
Business Acquisition [Line Items]
Ownership percentage in consolidated entity				80.25%
Sempra Texas Holdings Corp [Member] \| Texas Transmission Investment LLC [Member] \| Oncor Electric Delivery Company LLC. [Member]
Business Acquisition [Line Items]
Ownership percentage held by noncontrolling owners				19.75%
Oncor Electric Delivery Company LLC Additional Acquisition [Member] \| Sempra Texas Intermediate Holding Company LLC [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Cash consideration				$ 26
Oncor Electric Delivery Company LLC Additional Acquisition [Member] \| Oncor Electric Delivery Company LLC. [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Acquired percentage interest				0.22%
InfraREIT Acquisition [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Acquired percentage interest		100.00%
Consideration		$ 1,275
Acquisition price per share acquired \| $ / shares		$ 21
Management agreement termination fee paid		$ 40
Debt assumed	$ 953
Repayments of assumed debt	602
Repayments of secured debt	$ 351
InfraREIT Partners [Member] \| Oncor Holdings [Member]
Business Acquisition [Line Items]
Acquired percentage interest		100.00%
Sharyland Holdings, LP [Member]
Business Acquisition [Line Items]
Acquired percentage interest		50.00%
Consideration		$ 102
Sharyland Holdings, LP [Member] \| Sharyland Holdings, LP [Member] \| Sharyland Utilities [Member]
Business Acquisition [Line Items]
Acquired percentage interest		100.00%
Compania Transmisora del Norte Grande S.A. [Member] \| Sempra South American Utilities [Member] \| Compania Transmisora del Norte Grande S.A. [Member]
Business Acquisition [Line Items]
Acquired percentage interest			100.00%
Ownership Interests Held By Others, Otay Mesa VIE [Member] \| San Diego Gas and Electric Company [Member]
Business Acquisition [Line Items]
Generating capacity \| MW					605
Conditional purchase obligation					$ 280
Oncor Holdings [Member]
Business Acquisition [Line Items]
Payments to Acquire Interest in Subsidiaries and Affiliates					$ 1,330