DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE IMPACT ON INCOME (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	$ 48	$ 101	$ 201	$ 6
Pretax gain (loss) on derivatives recognized in earnings	$ 1	$ (1)	$ 1	$ 4
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	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	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	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	Unregulated Operating Revenue	Unregulated Operating Revenue
Derivatives designated as hedging instruments:
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	$ 77	$ 132	$ 248	$ 34
Pretax gain (loss) reclassified from AOCI into earnings	18	13	31	24
Derivatives designated as hedging instruments: | Interest Expense | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	66	94	208	17
Pretax gain (loss) reclassified from AOCI into earnings	3	0	6	0
Derivatives designated as hedging instruments: | Interest Expense | Cash Flow Hedging | Interest rate instruments | SoCalGas
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	0	0	0	0
Pretax gain (loss) reclassified from AOCI into earnings	(1)	(1)	(1)	(1)
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	0	0	7
Pretax gain (loss) reclassified from AOCI into earnings	0	1	0	1
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	(3)	41	25	24
Pretax gain (loss) reclassified from AOCI into earnings	10	14	15	21
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	10	(1)	10	(6)
Pretax gain (loss) reclassified from AOCI into earnings	2	(1)	4	(2)
Derivatives designated as hedging instruments: | Equity Earnings | Fair Value Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	(7)	0	(7)	0
Pretax gain (loss) reclassified from AOCI into earnings	0	0	0	0
Derivatives designated as hedging instruments: | Revenues: Energy- Related Businesses | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) recognized in OCI	11	(2)	12	(8)
Pretax gain (loss) reclassified from AOCI into earnings	2	0	5	0
Derivatives designated as hedging instruments: | Other Income, Net | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	1	(1)	1	(2)
Derivatives designated as hedging instruments: | Other Income, 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	24	206	74	590
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	41	253	120	702
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SoCalGas
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	(21)	(20)	(27)	(47)
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	4	(27)	(19)	(18)
Derivatives not designated as hedging instruments: | Contingent Interest Rate Derivative
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	0	0	0	(47)
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	(21)	(20)	(27)	(47)
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	$ 4	$ (27)	$ (19)	$ (18)