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Other (Income) Expense, Net (Tables)
3 Months Ended
Mar. 31, 2024
Other Income and Expenses [Abstract]  
Other (Income) Expense, Net
Other (income) expense, net, consisted of: 
 Three Months Ended
March 31,
($ in millions)20242023
Interest income$(73)$(112)
Interest expense303 242 
Exchange losses83 61 
Income from investments in equity securities, net (1)
(143)(450)
Net periodic defined benefit plan (credit) cost other than service cost(160)(115)
Other, net(43)463 
 $(33)$89 
(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 directly owned 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.