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Retirement Benefits (Unaudited)
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
RETIREMENT BENEFITS RETIREMENT BENEFITS
The cost to the company of its pension and other postretirement benefit (OPB) plans is shown in the following table:
 Three Months Ended June 30Six Months Ended June 30
Pension
Benefits		OPBPension
Benefits		OPB
$ in millions20252024202520242025202420252024
Components of net periodic benefit cost (benefit)
Service cost$54 $59 $1 $1 $108 $119 $2 $2 
Interest cost402 382 15 16 805 763 31 31 
Expected return on plan assets(539)(549)(21)(22)(1,079)(1,098)(42)(43)
Amortization of prior service credit— — — — — — (1)— 
Other— — — — 7 — — — 
Net periodic benefit cost (benefit)$(83)$(108)$(5)$(5)$(159)$(216)$(10)$(10)
Employer Contributions
The company sponsors defined benefit pension and OPB plans, as well as defined contribution plans. We fund our defined benefit pension plans annually in a manner consistent with the Employee Retirement Income Security Act of 1974, as amended by the Pension Protection Act of 2006.
Contributions made by the company to its retirement plans are as follows:
 Three Months Ended June 30Six Months Ended June 30
$ in millions2025202420252024
Defined benefit pension plans$24 $24 $42 $49 
OPB plans10 9 20 20 
Defined contribution plans155 151 384 381