XML 42 R26.htm IDEA: XBRL DOCUMENT v3.25.1
Retirement Benefits (Unaudited) (Tables)
 3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Components of net periodic benefit cost
The cost to the company of its pension and other postretirement benefit (OPB) plans is shown in the following table:
 Three Months Ended March 31
Pension
Benefits		OPB
$ in millions2025202420252024
Components of net periodic benefit cost (benefit)
Service cost$54 $60 $1 $1 
Interest cost403 381 16 15 
Expected return on plan assets(540)(549)(21)(21)
Amortization of prior service credit— — (1)— 
Other7 — — — 
Net periodic benefit cost (benefit)$(76)$(108)$(5)$(5)
Employer contributions to retirement plans
Contributions made by the company to its retirement plans are as follows:
 Three Months Ended March 31
$ in millions20252024
Defined benefit pension plans$18 $25 
OPB plans10 11 
Defined contribution plans229 230