DERIVATIVE FINANCIAL INSTRUMENTS - INCOME STATEMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Pretax (loss) gain reclassified from AOCI into earnings	$ 1	$ 216	$ 158
Cost of natural gas
Derivative Instruments, Gain (Loss) [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 electric fuel and purchased power
Derivative Instruments, Gain (Loss) [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
Foreign exchange instruments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income, net	Other income, net	Other income, net
Commodity contracts not subject to rate recovery
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Unregulated Operating Revenue	Unregulated Operating Revenue	Unregulated Operating Revenue
Interest rate instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	INTEREST EXPENSE	INTEREST EXPENSE	INTEREST EXPENSE
Derivatives designated as hedging instruments: | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	$ 67	$ 257	$ 115
Pretax (loss) gain reclassified from AOCI into earnings	49	(16)	(92)
Derivatives designated as hedging instruments: | Cash Flow Hedges | Interest rate instruments | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	45	40	29
Pretax (loss) gain reclassified from AOCI into earnings	(1)	(1)	(11)
Derivatives designated as hedging instruments: | Cash Flow Hedges | Interest rate instruments | Equity Earnings
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	20	205	71
Pretax (loss) gain reclassified from AOCI into earnings	48	(29)	(73)
Derivatives designated as hedging instruments: | Cash Flow Hedges | Foreign exchange instruments | Equity Earnings
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	(3)	(5)	8
Pretax (loss) gain reclassified from AOCI into earnings	(2)	0	0
Derivatives designated as hedging instruments: | Cash Flow Hedges | Foreign exchange instruments | Revenues: Energy- Related Businesses
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	(2)	(8)	11
Pretax (loss) gain reclassified from AOCI into earnings	(1)	1	(1)
Derivatives designated as hedging instruments: | Cash Flow Hedges | Foreign exchange instruments | Other Income, Net
Derivative Instruments, Gain (Loss) [Line Items]
Pretax (loss) gain reclassified from AOCI into earnings	(2)	(1)	0
Derivatives designated as hedging instruments: | Cash Flow Hedges | Interest rate and foreign exchange instruments | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax (loss) gain reclassified from AOCI into earnings	1	2	(1)
Derivatives designated as hedging instruments: | Cash Flow Hedges | Interest rate and foreign exchange instruments | Other Income, Net
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	7	25	(4)
Pretax (loss) gain reclassified from AOCI into earnings	6	12	(6)
Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	599	(937)	(219)
Derivatives not designated as hedging instruments: | Foreign exchange instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	0	0	(22)
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	919	(1,116)	(203)
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | Cost of natural gas
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	(288)	(56)	(25)
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | Cost of electric fuel and purchased power
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	15	202	31
Derivatives not designated as hedging instruments: | Interest rate instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	(47)	33	0
SDG&E | Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	15	202	31
SoCalGas | Derivatives designated as hedging instruments: | Cash Flow Hedges | Interest rate instruments | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax gain (loss) recognized in OCI	0	0	0
Pretax (loss) gain reclassified from AOCI into earnings	(1)	(1)	0
SoCalGas | Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative recognized in earnings	$ (288)	$ (56)	$ (25)