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Other (Income) Expense, Net (Tables) | 6 Months Ended
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Jun. 30, 2020
Other Income and Expenses [Abstract] |
Other (Income) Expense, Net | Other (income) expense, net, consisted of:
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in millions) | 2020 |  | 2019 |  | 2020 |  | 2019
Interest income | $ | (14 | ) |  | $ | (75 | ) |  | $ | (39 | ) |  | $ | (164 | )
Interest expense | 209 |  |  | 233 |  |  | 421 |  |  | 442 |
Exchange losses | 24 |  |  | 27 |  |  | 78 |  |  | 128 |
Income from investments in equity securities, net (1) | (551 | ) |  | (58 | ) |  | (603 | ) |  | (32 | )
Net periodic defined benefit plan (credit) cost other than service cost | (80 | ) |  | (140 | ) |  | (170 | ) |  | (281 | )
Other, net | 22 |  |  | 153 |  |  | (5 | ) |  | 234 |
| $ | (390 | ) |  | $ | 140 |  |  | $ | (318 | ) |  | $ | 327 |
(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 ownership interests in investment funds are accounted for on a one quarter lag. The Company estimates that gains of approximately $300 million will be recognized in the third quarter of 2020 from ownership interests in investment funds.

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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