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EMPLOYEE BENEFIT PLANS - PENSION AND PBOP PLANS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |
Plan amendments | $ 4 |
Other Postretirement Benefits Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan amendments | 0 | $ 0
Oncor Electric Delivery Company LLC | Other Postretirement Benefits Plan | Sempra Texas Utilities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Gain (loss) arising during the period | $ (38) | $ (26)

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- Definition Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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