v3.26.3
Postretirement Benefits - Schedule Of Net Benefit Costs (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Components of net periodic benefit cost:        
Net periodic benefit cost (benefit) $ 82 $ (63) $ (37) $ (116)
Pension Benefits | U.S. Plans        
Components of net periodic benefit cost:        
Service cost 0 0 0 0
Interest cost 136 153 408 459
Expected return on plan assets (176) (180) (528) (540)
Amortization of prior service cost (credit) 0 0 0 0
Net periodic benefit cost (benefit) (40) (27) (120) (81)
Pension Benefits | Non-U.S. Plans        
Components of net periodic benefit cost:        
Service cost 12 12 36 35
Interest cost 30 28 90 83
Expected return on plan assets (44) (42) (132) (122)
Amortization of prior service cost (credit) 1 0 2 0
Net periodic benefit cost (benefit) (1) (2) (4) (4)
Other Postretirement Benefits        
Components of net periodic benefit cost:        
Service cost 14 15 42 47
Interest cost 26 32 79 93
Expected return on plan assets (2) (3) (8) (7)
Amortization of prior service cost (credit) 0 (1) 0 (3)
Net periodic benefit cost (benefit) $ 38 $ 43 $ 113 $ 130