v3.26.1
Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income Statement [Abstract]        
Operating revenues $ 1,355 $ 1,276 $ 2,562 $ 2,418
Operating expenses:        
Operation and maintenance 481 480 974 948
Depreciation and amortization 240 221 477 437
General taxes 92 86 178 173
Total operating expenses, net 813 787 1,629 1,558
Operating income 542 489 933 860
Other (expense) income:        
Interest expense (167) (151) (330) (295)
Interest income 3 22 15 44
Non-operating benefit costs, net 5 4 10 8
Other, net 22 12 36 29
Total other (expense) income (137) (113) (269) (214)
Income before income taxes 405 376 664 646
Provision for income taxes 90 87 153 152
Net income attributable to common shareholders $ 315 $ 289 $ 511 $ 494
Basic earnings per share:        
Net income attributable to common shareholders (in dollars per share) $ 1.61 $ 1.48 $ 2.61 $ 2.53
Diluted earnings per share:        
Net income attributable to common shareholders (in dollars per share) $ 1.61 $ 1.48 $ 2.61 $ 2.53
Weighted-average common shares outstanding:        
Basic (in shares) 196 195 196 195
Diluted (in shares) 196 195 196 195