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Employee Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Schedule of Periodic Benefit Cost Related to Our Defined Benefit Plans, Net
The components of net periodic benefit cost related to our defined benefit plans were as follows (in millions):
Pension PlansOther Postretirement
Benefit Plans
2025202420252024
Three months ended March 31
Service cost$27 $28 $1 $1 
Interest cost34 31 3 3 
Expected return on plan assets(55)(53)— — 
Amortization of:
Net actuarial gain(2)(1)(2)(1)
Prior service cost (credit)2 (3)— — 
Settlement loss1 — — — 
Net periodic benefit cost$7 $2 $2 $3