XML 59 R49.htm IDEA: XBRL DOCUMENT v3.25.3
Employee Retirement Plans (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Pension benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 25 $ 25 $ 73 $ 73
Interest cost 48 46 143 138
Expected return on plan assets (51) (48) (150) (144)
Amortization of prior service cost (credit) 1 1 3 4
Recognition of actuarial gain (31) (31)
Special termination benefit charge 3 1 6
Total pension and postretirement benefit expense (income) 23 (4) 70 46
Postretirement benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1 2 2
Interest cost 4 4 13 14
Amortization of actuarial net gain (8) (6) (23) (18)
Amortization of prior service cost (credit) (2) (1) (5) (5)
Total pension and postretirement benefit expense (income) $ (5) $ (3) $ (13) $ (7)