DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE IMPACT ON INCOME (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Pretax gain (loss) reclassified from AOCI into earnings	$ (225)	$ 315	$ (24)	$ 321
Pretax gain (loss) on derivatives recognized in earnings	$ 1	$ 1	$ 2	$ 5
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
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 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	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	$ (235)	$ 367	$ 13	$ 401
Pretax gain (loss) reclassified from AOCI into earnings	10	13	41	37
Derivatives designated as hedging instruments: | Interest expense | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(203)	320	5	337
Pretax gain (loss) reclassified from AOCI into earnings	3	(1)	9	(1)
Derivatives designated as hedging instruments: | Interest expense | Cash Flow Hedging | Interest rate instruments | SoCalGas
Derivative [Line Items]
Pretax (loss) gain recognized in OCI			0	0
Pretax gain (loss) reclassified from AOCI into earnings			(1)	(1)
Derivatives designated as hedging instruments: | Interest expense | Cash Flow Hedging | Interest rate and foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI			0	7
Pretax gain (loss) reclassified from AOCI into earnings			0	1
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Interest rate instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(33)	32	(8)	56
Pretax gain (loss) reclassified from AOCI into earnings	5	12	20	33
Derivatives designated as hedging instruments: | Equity Earnings | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	2	7	12	1
Pretax gain (loss) reclassified from AOCI into earnings	1	1	5	(1)
Derivatives designated as hedging instruments: | Equity Earnings | Fair Value Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	(3)	0	(10)	0
Pretax gain (loss) reclassified from AOCI into earnings	0	0	0	0
Derivatives designated as hedging instruments: | Other income, net | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI	2	8
Pretax gain (loss) reclassified from AOCI into earnings	1	1	2	(1)
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 designated as hedging instruments: | Revenues: Energy- related businesses | Cash Flow Hedging | Foreign exchange instruments
Derivative [Line Items]
Pretax (loss) gain recognized in OCI			14	0
Pretax gain (loss) reclassified from AOCI into earnings			5	0
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	72	(19)	146	571
Derivatives not designated as hedging instruments: | Interest rate instruments
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	0	0	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	98	83	218	785
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | SoCalGas
Derivative [Line Items]
Pretax gain (loss) on derivatives recognized in earnings	(16)	(125)	(43)	(172)
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	(10)	23	(29)	5
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	(16)	(125)	(43)	(172)
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	$ (10)	$ 23	$ (29)	$ 5