v3.26.3
DERIVATIVE FINANCIAL INSTRUMENTS - DERIVATIVE IMPACT ON INCOME (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative [Line Items]        
Pretax gain (loss) reclassified from AOCI into earnings $ 164 $ (14) $ 207 $ (91)
Pretax (loss) gain on derivatives recognized in earnings 3 (1) (29) (2)
Derivatives designated as hedging instruments:        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 179 (11) 230 (94)
Pretax gain (loss) reclassified from AOCI into earnings 3 4 9 7
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:IncomeLossFromEquityMethodInvestments | Cash Flow Hedging | Interest rate instruments        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 151 (6) 175 (39)
Pretax gain (loss) reclassified from AOCI into earnings 2 6 2 10
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:IncomeLossFromEquityMethodInvestments | Cash Flow Hedging | Foreign exchange instruments        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 4 (1) 5 (10)
Pretax gain (loss) reclassified from AOCI into earnings 1 (3) 2 (4)
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:IncomeLossFromEquityMethodInvestments | Fair Value Hedging | Foreign exchange instruments        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 13 (5) 33 (30)
Pretax gain (loss) reclassified from AOCI into earnings 0 0 0 0
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating | Cash Flow Hedging | Interest rate instruments        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 7 2 11 (4)
Pretax gain (loss) reclassified from AOCI into earnings 0 4 3 6
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:InterestExpenseNonoperating | Cash Flow Hedging | Interest rate instruments | Southern California Gas Company        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 0 0 0 0
Pretax gain (loss) reclassified from AOCI into earnings 0 (1) 0 (1)
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense | Cash Flow Hedging | Foreign exchange instruments        
Derivative [Line Items]        
Pretax gain (loss) reclassified from AOCI into earnings 0 (1) (1) (2)
Derivatives designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:UnregulatedOperatingRevenue | Cash Flow Hedging | Foreign exchange instruments        
Derivative [Line Items]        
Pretax gain (loss) recognized in OCI 4 (1) 6 (11)
Pretax gain (loss) reclassified from AOCI into earnings 0 (2) 3 (3)
Derivatives not designated as hedging instruments:        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings (78) (134) 207 (169)
Derivatives not designated as hedging instruments: | Interest rate instruments        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ 118 $ (2) $ 150 $ (58)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Expense, Nonoperating Interest Expense, Nonoperating Interest Expense, Nonoperating Interest Expense, Nonoperating
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ (194) $ (35) $ 41 $ 4
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unregulated Operating Revenue Unregulated Operating Revenue Unregulated Operating Revenue Unregulated Operating Revenue
Derivatives not designated as hedging instruments: | Commodity contracts not subject to rate recovery | Energy-related businesses        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ 24 $ 1 $ 79 $ (1)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | Natural gas        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ (39) $ (91) $ (48) $ (111)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | Electric fuel and purchased power        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ 5 $ (7) $ 8 $ (3)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold Cost of Product and Service Sold
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | San Diego Gas and Electric Company        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ 5 $ (7) $ 8 $ (3)
Derivatives not designated as hedging instruments: | Commodity contracts subject to rate recovery | Southern California Gas Company        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings (39) (91) (48) (111)
Derivatives not designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense | Foreign exchange instruments        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings 3 0 (28) 0
Derivatives not designated as hedging instruments: | Income Statement Location [Axis]: us-gaap:UnregulatedOperatingRevenue | Foreign exchange instruments        
Derivative [Line Items]        
Pretax (loss) gain on derivatives recognized in earnings $ 5 $ 0 $ 5 $ 0