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Other (Income) Expense, Net (Tables)
9 Months Ended
Sep. 30, 2025
Other Income and Expenses [Abstract]  
Schedule of Other (Income) Expense, Net
Other (income) expense, net, consisted of: 
 Three Months Ended
September 30,
Nine Months Ended
September 30,
($ in millions)2025202420252024
Interest income$(96)$(127)$(274)$(269)
Interest expense327 330 946 943 
Exchange losses56 33 224 177 
(Income) loss from investments in equity securities, net (1)
(373)31 (563)(169)
Net periodic defined benefit plan (credit) cost other than service cost(152)(157)(452)(476)
Other, net— (272)(162)(357)
 $(238)$(162)$(281)$(151)
(1)    Includes net realized and unrealized gains and losses from investments in equity securities either owned directly or through ownership interests in investment funds. Unrealized gains and losses from investments that are owned directly are determined at the end of the reporting period, while gains and losses from ownership interests in investment funds are accounted for on a one quarter lag.