v3.26.1
Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Loss [Line Items]    
Balance $ 32,449 $ 31,867
Balance 32,583 31,926
Net unrealized gains/(losses) on cash flow hedge derivatives    
Accumulated Other Comprehensive Loss [Line Items]    
Balance 67 (33)
Other comprehensive loss before reclassifications (199) (7)
(Gain) loss reclassified from accumulated other comprehensive loss 20 (5)
Net current-period change in accumulated other comprehensive loss (179) (12)
Balance (112) (45)
Pension and other postretirement liability adjustments    
Accumulated Other Comprehensive Loss [Line Items]    
Balance (22) (62)
Other comprehensive loss before reclassifications (3) (2)
(Gain) loss reclassified from accumulated other comprehensive loss 0 0
Net current-period change in accumulated other comprehensive loss (3) (2)
Balance (25) (64)
Total accumulated other comprehensive loss    
Accumulated Other Comprehensive Loss [Line Items]    
Balance 45 (95)
Other comprehensive loss before reclassifications (202) (9)
(Gain) loss reclassified from accumulated other comprehensive loss 20 (5)
Net current-period change in accumulated other comprehensive loss (182) (14)
Balance $ (137) $ (109)