v3.26.1
Postretirement Benefits - Schedule Of Net Benefit Costs (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Components of net periodic benefit cost:    
Net periodic benefit cost (benefit) $ 4 $ 14
Pension Benefits | U.S. Plans    
Components of net periodic benefit cost:    
Service cost 0 0
Interest cost 136 153
Expected return on plan assets (176) (180)
Amortization of prior service cost (credit) 0 0
Net periodic benefit cost (benefit) (40) (27)
Pension Benefits | Non-U.S. Plans    
Components of net periodic benefit cost:    
Service cost 12 11
Interest cost 30 28
Expected return on plan assets (44) (40)
Amortization of prior service cost (credit) 0 0
Net periodic benefit cost (benefit) (2) (1)
Other Postretirement Benefits    
Components of net periodic benefit cost:    
Service cost 14 16
Interest cost 27 31
Expected return on plan assets (3) (2)
Amortization of prior service cost (credit) 0 (1)
Net periodic benefit cost (benefit) $ 38 $ 44