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Other (Income) Expense, Net
12 Months Ended
Dec. 31, 2021
Other Income and Expenses [Abstract]  
Other (Income) Expense, Net Other (Income) Expense, Net
Other (income) expense, net, consisted of:
Years Ended December 31202120202019
Interest income$(36)$(59)$(274)
Interest expense806 831 893 
Exchange losses297 145 187 
Income from investments in equity securities, net (1)
(1,940)(1,338)(170)
Net periodic defined benefit plan (credit) cost other than service cost(212)(339)(545)
Other, net(256)(130)38 
 $(1,341)$(890)$129 
(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. The Company estimates losses of approximately $500 million will be recorded in the first quarter of 2022 from ownership interests in investment funds.
Other, net (as presented in the table above) in 2019 includes $162 million of goodwill impairment charges related to certain businesses in the Healthcare Services segment, which were fully divested by the first quarter of 2020.
Interest paid was $779 million in 2021, $822 million in 2020 and $841 million in 2019.