v3.25.2
Pension and Postretirement Plans - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Pension Benefits | U.S.        
Components of Net Periodic Benefit Cost        
Service cost $ 30 $ 29 $ 61 $ 58
Interest cost 32 29 64 57
Expected return on plan assets (38) (39) (76) (77)
Amortization of net actuarial loss (gain) 4 3 8 6
Settlements 2 3 4 4
Net periodic benefit (credit) cost 30 25 61 48
Pension Benefits | Int’l.        
Components of Net Periodic Benefit Cost        
Service cost 3 4 6 7
Interest cost 10 8 18 16
Expected return on plan assets (12) (11) (23) (22)
Amortization of net actuarial loss (gain) (1) 0 (1) 0
Settlements 0 0 0 0
Net periodic benefit (credit) cost 0 1 0 1
Other Benefits        
Components of Net Periodic Benefit Cost        
Service cost 1 0 1 1
Interest cost 2 2 4 4
Expected return on plan assets 0 0 0 0
Amortization of net actuarial loss (gain) (2) (1) (3) (2)
Settlements 0 0 0 0
Net periodic benefit (credit) cost $ 1 $ 1 $ 2 $ 3