REGULATORY MATTERS - CPUC GRC Narrative (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended	12 Months Ended
	Apr. 30, 2025	Dec. 31, 2024	Oct. 31, 2023	Mar. 31, 2025	Dec. 31, 2027	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
California Public Utilities Commission
General Rate Case [Line Items]
CCM benchmark rate, variable rate (as a percent)				1.00%
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | California Public Utilities Commission
General Rate Case [Line Items]
Requested recovery amount				$ 58
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | Subsequent Event | California Public Utilities Commission
General Rate Case [Line Items]
Approved recovery amount	$ 19
2024 General Rate Case | General Rate Case | Subsequent Event
General Rate Case [Line Items]
Requested interim rate recovery	50.00%
2024 General Rate Case | Cost of Capital Proceeding
General Rate Case [Line Items]
Change in benchmark rate during period percentage				20.00%
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission
General Rate Case [Line Items]
Approved revenue requirement		$ 2,699
Approved revenue increase from prior request		$ 189
Approved revenue increase from prior request (percent)		7.50%
Net income tax benefits		$ 68
Approved rate of return		0.0745
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission | Electrical Operations
General Rate Case [Line Items]
Approved revenue requirement		$ 2,193
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission | Natural Gas Operations
General Rate Case [Line Items]
Approved revenue requirement		506
2024 General Rate Case | SDG&E | General Rate Case | Forecast | California Public Utilities Commission
General Rate Case [Line Items]
Approved revenue increase from prior request					$ 122	$ 119	$ 147
Approved revenue increase from prior request (percent)					4.11%	4.17%	5.45%
2024 General Rate Case | SoCalGas | General Rate Case | California Public Utilities Commission
General Rate Case [Line Items]
Approved revenue requirement		3,806
Approved revenue increase from prior request		$ 324
Approved revenue increase from prior request (percent)		9.30%
Net income tax benefits		$ 202
Approved rate of return		0.0749
2024 General Rate Case | SoCalGas | General Rate Case | Forecast | California Public Utilities Commission
General Rate Case [Line Items]
Approved revenue increase from prior request					$ 120	$ 116	$ 190
Approved revenue increase from prior request (percent)					2.92%	2.91%	5.00%
2024 GRC - 2024 Requirement | SDG&E | General Rate Case
General Rate Case [Line Items]
General rate case, expected recovery of wildlife mitigation plan costs								$ 194
Requested review and recovery of wildfire mitigation plan			$ 1,500
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Forecast
General Rate Case [Line Items]
General rate case, expected recovery of wildlife mitigation plan costs							$ 96
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Subsequent Event
General Rate Case [Line Items]
General rate case, expected recovery of wildlife mitigation plan costs	$ 240
Requested review and recovery of wildfire mitigation plan	417
2024 GRC - 2024 Requirement | SoCalGas | General Rate Case | Subsequent Event
General Rate Case [Line Items]
General rate case, expected recovery of wildlife mitigation plan costs	$ 499