SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - WILDFIRE FUND (Details) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Feb. 28, 2026	Sep. 30, 2025	Jul. 31, 2019	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2019	Sep. 30, 2019
Loss Contingencies [Line Items]
Wildfire fund, threshold amount to seek payment		$ 1,000.0	$ 1,000.0
Wildfire fund, threshold percentage of equity portion of electric transmission			20.00%
Wildfire fund continuation account, additional liquidity		18,000.0
Wildfire fund, ratepayer contributions financed through new bonds		9,000.0
Wildfire fund, electric IOU shareholder contributions		5,100.0
Wildfire fund, electric IOU annual contributions		300.0
Wildfire fund, additional shareholder contributions		3,900.0
Wildfire fund, annual shareholder contributions payable		$ 780.0
Wildfire fund, potential ratepayer credit		50.00%
Wildfire fund, maximum claim reimbursement, prior reimbursements, term				3 years
Wildfire fund, maximum capital investments authorized		$ 6,000.0
Wildfire Fund
Loss Contingencies [Line Items]
Wildfire fund, threshold amount to seek payment		$ 1,000.0
Wildfire fund, threshold percentage of equity portion of electric transmission		20.00%
Liquidity fund, maximum borrowing capacity				$ 10,500.0
Initial shareholder contributions				7,500.0
Annual shareholder contributions				$ 3,000.0
Amortization of wildfire fund asset				10 years
Subsequent Event
Loss Contingencies [Line Items]
IOU expected aggregate reimbursements, 2019 and 2021 wildfires	$ 1,260.0
IOU expected aggregate reimbursements, LA wildfires	$ 134.0
SDG&E
Loss Contingencies [Line Items]
Initial liability cap				$ 1,500.0
Initial shareholder contributions				322.5			$ 322.5
Annual shareholder contributions				129.0
Loss contingency, wildfire fund expected contribution		$ 387.0
Loss contingency, wildfire fund expected fixed contribution		219.3
Loss contingency, wildfire fund expected annual fixed contribution		$ 12.9
Wildfire fund loss contingency, term, expected fixed contribution		17 years
Wildfire fund loss contingency, term, expected contingent contribution		$ 167.7
Loss contingency, wildfire fund, expected annual contingent contributions		$ 33.5
Wildfire fund loss contingency, term, expected contingent contribution		5 years
Wildfire fund, maximum capital investments authorized		$ 258.0
Wildfire fund asset						$ 451.5
Annual contributions				$ 12.9
SDG&E | Minimum
Loss Contingencies [Line Items]
Amortization of wildfire fund asset					15 years
SDG&E | Maximum
Loss Contingencies [Line Items]
Amortization of wildfire fund asset					25 years