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Employee Benefits (Tables)
3 Months Ended
Mar. 31, 2023
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 three months ended March 31 are as follows: 

(in millions)20232022
Service cost$— $
Interest cost18 12 
Expected return on assets(25)(22)
Amortization of prior service credit / actuarial loss
Net periodic benefit cost$(6)$(6)