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Employee Benefits (Tables)
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Net Periodic Benefit Cost
The components of net periodic benefit cost for our retirement plans and postretirement plans for the periods ended June 30 are as follows: 

(in millions)Three MonthsSix Months
2025202420252024
Service cost$— $1 $1 $1 
Interest cost18 17 35 35 
Expected return on assets(24)(24)(48)(49)
Amortization of prior service credit / actuarial loss1 1 2 2 
Net periodic benefit cost$(5)$(5)$(10)$(11)