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Employee Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2026
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
2026202520262025
Three months ended June 30
Service cost$27 $27 $$
Interest cost33 34 
Expected return on plan assets(57)(56)— — 
Amortization of:
Net actuarial gain(2)(2)(1)(2)
Prior service cost— — 
Settlement loss— — — 
Net periodic benefit cost$$$$
Six months ended June 30
Service cost$54 $54 $$
Interest cost65 68 
Expected return on plan assets(115)(111)— — 
Amortization of:
Net actuarial gain(4)(4)(3)(4)
Prior service cost— — 
Settlement loss— — 
Net periodic benefit cost$$13 $$