DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE IMPACT ON INCOME (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	$ (37)	$ 153
Interest rate instruments
Derivative [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Nonoperating	Interest Expense, Nonoperating
Commodity contracts not subject to rate recovery
Derivative [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Unregulated Operating Revenue	Unregulated Operating Revenue
Cost of electric fuel and purchased power
Derivative [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Goods and Services Sold	Cost of Goods and Services Sold
Cost of natural gas
Derivative [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Goods and Services Sold	Cost of Goods and Services Sold
Derivatives designated as hedging instruments:
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	$ (41)	$ 171
Pretax gain (loss) reclassified from AOCI into earnings	3	13
Derivatives designated as hedging instruments: | Interest expense | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(3)	142
Pretax gain (loss) reclassified from AOCI into earnings	2	3
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(20)	28
Pretax gain (loss) reclassified from AOCI into earnings	5	5
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(4)	0
Pretax gain (loss) reclassified from AOCI into earnings	(2)	2
Derivatives designated as hedging instruments: | Equity Earnings | Fair Value Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(9)	0
Pretax gain (loss) reclassified from AOCI into earnings	0	0
Derivatives designated as hedging instruments: | Revenues: Energy- related businesses | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(5)	1
Pretax gain (loss) reclassified from AOCI into earnings	(2)	3
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	(72)	50
Derivatives not designated as hedging instruments: | Interest rate instruments
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	(65)	0
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	6	79
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SoCalGas
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	(16)	(6)
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SDG&E
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	3	(23)
Derivatives not designated as hedging instruments: | Cost of natural gas | Commodity contracts subject to rate recovery
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	(16)	(6)
Derivatives not designated as hedging instruments: | Cost of electric fuel and purchased power | Commodity contracts subject to rate recovery
Derivative [Line Items]
Pretax (loss) gain on derivatives recognized in earnings	$ 3	$ (23)