v3.25.1
Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Defined Benefit Plans - Expense
The pre-tax net periodic benefit cost/(income) for our defined benefit pension and OPEB plans for the periods ended March 31 were as follows (in millions):

First Quarter
20242025
 Pension BenefitsOPEBPension BenefitsOPEB
 U.S. PlansNon-U.S. PlansWorldwide U.S. PlansNon-U.S. PlansWorldwide
Service cost$73 $63 $$52 $48 $
Interest cost400 235 57 393 224 55 
Expected return on assets(455)(255)— (456)(278)— 
Amortization of prior service costs/(credits)
23 22 
Net remeasurement (gain)/loss— (11)— — (10)— 
Separation costs/other14 — 24 — 
Settlements and curtailments
— — — — — — 
Net periodic benefit cost/(income)
$49 $52 $65 $18 $14 $62