DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE IMPACT ON INCOME (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	$ 153	$ (95)
Pretax gain (loss) on derivatives recognized in earnings	$ 0	$ 5
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
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
Interest rate instruments
Derivative [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	INTEREST EXPENSE	INTEREST EXPENSE
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
Derivatives designated as hedging instruments: | Cash Flow Hedging
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	$ 171	$ (98)
Pretax gain (loss) reclassified from AOCI into earnings	13	11
Derivatives designated as hedging instruments: | Interest Expense | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	142	(77)
Pretax gain (loss) reclassified from AOCI into earnings	3	0
Derivatives designated as hedging instruments: | Interest Expense | Cash Flow Hedging | Interest rate and foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	0	7
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	28	(17)
Pretax gain (loss) reclassified from AOCI into earnings	5	7
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	0	(5)
Pretax gain (loss) reclassified from AOCI into earnings	2	(1)
Derivatives designated as hedging instruments: | Revenues: Energy- Related Businesses | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	1	(6)
Pretax gain (loss) reclassified from AOCI into earnings	3	0
Derivatives designated as hedging instruments: | Other Income (Expense), Net | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	0	(1)
Derivatives designated as hedging instruments: | Other Income (Expense), Net | Cash Flow Hedging | Interest rate and foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	0	6
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	50	384
Derivatives not designated as hedging instruments: | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	0	(47)
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	79	449
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SoCalGas
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	(6)	(27)
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SDG&E
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	(23)	9
Derivatives not designated as hedging instruments: | Cost of Natural Gas | Commodity contracts subject to rate recovery
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	(6)	(27)
Derivatives not designated as hedging instruments: | Cost of Electric Fuel and Purchased Power | Commodity contracts subject to rate recovery
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	$ (23)	$ 9