v3.26.3
Pension and Postretirement Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
Schedule of Net Periodic Benefit Cost (Benefit) Components of net periodic benefit cost and other supplemental information for the three and nine months ended September 30, 2026 and 2025 follow:
Qualified and non-qualified pension benefitsPostretirement benefits
United StatesInternational
Three months ended September 30,
Net periodic benefit cost (benefit) (millions)202620252026202520262025
Operating expense
Service cost $24 $26 $11 $12 $3 $5 
Non-operating expense
Interest cost 99 108 49 46 16 18 
Expected return on plan assets (144)(142)(73)(67)(13)(14)
Amortization of prior service benefit— — 1 — (7)(4)
Amortization of net actuarial loss 63 69 3 2 4 4 
Total non-operating expense (benefit)18 35 (20)(19)— 4 
Total net periodic benefit cost (benefit) $42 $61 $(9)$(7)$3 $9 
Nine months ended September 30,
202620252026202520262025
Operating expense
Service cost $73 $77 $31 $36 $12 $14 
Non-operating expense
Interest cost 299 325 149 138 48 56 
Expected return on plan assets (432)(426)(220)(198)(40)(42)
Amortization of prior service benefit— — 1 1 (21)(8)
Amortization of net actuarial loss 190 207 7 6 12 12 
Total non-operating expense (benefit)57 106 (63)(53)(1)18 
Total net periodic benefit cost (benefit) $130 $183 $(32)$(17)$11 $32