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CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - SoCalGas - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Net income, pretax amount, attributable to parent $ 897 $ 577 $ 2,908 $ 2,196
Net income, income tax (expense) benefit (14) (482) (191) (711)
Net income, after tax amounts, attributable to parent 883 95 2,717 1,485
Financial instruments        
Financial instruments, pretax amount, attributable to parent 167 (14) 209 (86)
Financial instruments, income tax (expense) benefit, attributable to parent (9) 1 (11) 8
Financial instruments, net of tax amount, attributable to parent 158 (13) 198 (78)
Pension and other postretirement benefits        
Pension and other postretirement benefits, pretax amount, attributable to parent 3 12 11 18
Pension and other postretirement benefits, income tax (expense) benefit, attributable to parent (1) (1) (1) (2)
Pension and other postretirement benefits, net of tax amount, attributable to parent 2 11 10 16
Total other comprehensive income (loss), pretax amount, attributable to parent 208 3 263 (52)
Total other comprehensive income (loss), income tax (expense) benefit, attributable to parent (10) 0 (12) 6
Total other comprehensive income (loss), net of tax amount, attributable to parent 198 3 251 (46)
Comprehensive income, pretax amount, attributable to parent 1,099   3,164 2,143
Comprehensive income, income tax (expense) benefit, attributable to parent (24)   (203) (705)
Comprehensive income 1,075   2,961 1,438
Southern California Gas Company        
Net income, pretax amount, attributable to parent (262) (49) 290 523
Net income, income tax (expense) benefit 115 95 95 51
Net income, after tax amounts, attributable to parent (147) 46 385 574
Financial instruments        
Financial instruments, pretax amount, attributable to parent   1   1
Financial instruments, income tax (expense) benefit, attributable to parent   0   0
Financial instruments, net of tax amount, attributable to parent   1   1
Pension and other postretirement benefits        
Pension and other postretirement benefits, pretax amount, attributable to parent 1 7 1 10
Pension and other postretirement benefits, income tax (expense) benefit, attributable to parent 0 (2) 0 (2)
Pension and other postretirement benefits, net of tax amount, attributable to parent 1 5 1 8
Total other comprehensive income (loss), pretax amount, attributable to parent 1 8 1 11
Total other comprehensive income (loss), income tax (expense) benefit, attributable to parent 0 (2) 0 (2)
Total other comprehensive income (loss), net of tax amount, attributable to parent 1 6 1 9
Comprehensive income, pretax amount, attributable to parent (261) (41) 291 534
Comprehensive income, income tax (expense) benefit, attributable to parent 115 93 95 49
Comprehensive income $ (146) $ 52 $ 386 $ 583