v3.26.1
Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 32,449 $ 31,867
Balance 32,879 32,081
Net unrealized gains/(losses) on cash flow hedge derivatives    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance 67 (33)
Other comprehensive gain (loss) before reclassifications (160) 123
(Gain) loss reclassified from accumulated other comprehensive loss 71 (49)
Net current-period change in accumulated other comprehensive loss (89) 74
Balance (22) 41
Pension and other postretirement liability adjustments    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (22) (62)
Other comprehensive gain (loss) before reclassifications (6) (3)
(Gain) loss reclassified from accumulated other comprehensive loss 0 0
Net current-period change in accumulated other comprehensive loss (6) (3)
Balance (28) (65)
Total accumulated other comprehensive income (loss)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance 45 (95)
Other comprehensive gain (loss) before reclassifications (166) 120
(Gain) loss reclassified from accumulated other comprehensive loss 71 (49)
Net current-period change in accumulated other comprehensive loss (95) 71
Balance $ (50) $ (24)