EMPLOYEE BENEFIT PLANS - ASSUMED HEALTH CARE COST TREND RATES (Details) - Other Postretirement Benefits Plan	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
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%
Pre-65 retirees \| San Diego Gas and Electric Company
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%
Pre-65 retirees \| SoCalGas
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 or older
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year	4.50%	4.75%	4.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend)	4.50%	4.50%	4.50%
Retirees aged 65 years or older \| San Diego Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year	4.50%	4.75%	4.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend)	4.50%	4.50%	4.50%
Retirees aged 65 years or older \| SoCalGas
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year	4.50%	4.75%	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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Ultimate trend rate for health care cost for defined benefit postretirement plan.

+ References

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