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Employee Retirement Plans (Tables)
9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The following table presents the components of net periodic pension and postretirement benefit expense (income) for employee retirement plans, which other than the service cost component is recorded in other expense, net in the consolidated statements of income (loss) (in millions):
Pension benefitsPostretirement benefits
Three months ended
September 30,
Nine months ended
September 30,
Three months ended
September 30,
Nine months ended
September 30,
20252024202520242025202420252024
Service cost$25 $25 $73 $73 $ $$
Interest cost48 46 143 138 $13 14 
Expected return on plan assets(51)(48)(150)(144)
Amortization of actuarial net gain(8)(6)(23)(18)
Amortization of prior service cost
   (credit)
(2)(1)(5)(5)
Recognition of actuarial gain(31)(31)
Special termination benefit charge
Total pension and postretirement benefit expense (income)$23 $(4)$70 $46 $(5)$(3)$(13)$(7)