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EMPLOYEE BENEFIT PLANS - ASSUMED HEALTH CARE COST TREND RATES (Details) - Other Postretirement Benefits Plan | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Pre-65 retirees |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 6.00% | 6.00% | 6.00%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.75% | 4.75% | 4.75%
Retirees aged 65 years and older |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 4.50% | 4.50% | 4.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.50% | 4.50% | 4.50%
SDG&E | Pre-65 retirees |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 6.00% | 6.00% | 6.00%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.75% | 4.75% | 4.75%
SDG&E | Retirees aged 65 years and older |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 4.50% | 4.50% | 4.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.50% | 4.50% | 4.50%
SoCalGas | Pre-65 retirees |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 6.00% | 6.00% | 6.00%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.75% | 4.75% | 4.75%
SoCalGas | Retirees aged 65 years and older |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Health care cost trend rate assumed for next year | 4.50% | 4.50% | 4.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend) | 4.50% | 4.50% | 4.50%

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- Definition Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Ultimate trend rate for health care cost for defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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