v3.26.3
GENERAL INFORMATION AND OTHER FINANCIAL DATA - RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on sales $ (214) $ 0 $ (214) $ 0
Interest expense 298 403 1,110 1,195
Equity earnings (668) (472) (1,582) (1,190)
Energy-related businesses (453) (528) (1,334) (1,408)
Other income, net (58) (49) (225) (199)
Income before income taxes and equity earnings (460) (160) (1,815) (1,109)
Income tax expense (benefit) 14 482 191 711
Net income (1,114) (150) (3,206) (1,588)
Total, net of income tax and after NCI (883) (95) (2,717) (1,485)
Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on sales (16) 0 (16) 0
Interest expense 102 93 303 272
Other income, net (45) 3 (129) (37)
Income before income taxes and equity earnings 262 49 (290) (523)
Income tax expense (benefit) (115) (95) (95) (51)
Net income 147 (46) (385) (574)
Total, net of income tax and after NCI 147 (46) (385) (574)
Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total, net of income tax and after NCI 34 10 35 17
Reclassification out of Accumulated Other Comprehensive Income | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total, net of income tax and after NCI 1 6 1 11
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency translation adjustments        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on sales 55 0 55 0
Earnings attributable to noncontrolling interests (16) 0 (16) 0
Total, net of income tax and after NCI 39 0 39 0
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on sales (7) 0 (7) 0
Income before income taxes and equity earnings (3) (4) (9) (7)
Income tax expense (benefit) 0 1 1 2
Net income (10) (3) (15) (5)
Earnings attributable to noncontrolling interests 3 1 6 3
Total, net of income tax and after NCI (7) (2) (9) (2)
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments | Interest rate instruments        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest expense 0 (4) (3) (6)
Equity earnings (2) (6) (2) (10)
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments | Interest rate instruments | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest expense 0 1 0 1
Reclassification out of Accumulated Other Comprehensive Income | Financial instruments | Foreign exchange instruments        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Equity earnings (1) 3 (2) 4
Energy-related businesses 0 2 (3) 3
Other income, net 0 1 1 2
Reclassification out of Accumulated Other Comprehensive Income | Pension and PBOP        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on sales 1 0 1 0
Income before income taxes and equity earnings 3 14 6 22
Income tax expense (benefit) (1) (2) (1) (3)
Net income 2 12 5 19
Reclassification out of Accumulated Other Comprehensive Income | Pension and PBOP | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes and equity earnings 1 6 1 12
Income tax expense (benefit) 0 (1) 0 (2)
Net income 1 5 1 10
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net 2 2 4 5
Reclassification out of Accumulated Other Comprehensive Income | Amortization of actuarial loss | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net 1 0 1 1
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net     1 1
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net     0 1
Reclassification out of Accumulated Other Comprehensive Income | Settlement charges        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net 0 12 0 16
Reclassification out of Accumulated Other Comprehensive Income | Settlement charges | Southern California Gas Company        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other income, net $ 0 $ 6 $ 0 $ 10