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Other (Income) Expense, Net | 6 Months Ended
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Jun. 30, 2021
Other Income and Expenses [Abstract] |
Other (Income) Expense, Net | Other (Income) Expense, Net Other (income) expense, net, consisted of:
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in millions) | 2021 |  | 2020 |  | 2021 |  | 2020
Interest income | $ | (9) |  |  | $ | (14) |  |  | $ | (20) |  |  | $ | (39) |
Interest expense | 202 |  |  | 209 |  |  | 401 |  |  | 421 |
Exchange losses | 114 |  |  | 24 |  |  | 155 |  |  | 78 |
Income from investments in equity securities, net (1) | (280) |  |  | (551) |  |  | (854) |  |  | (603) |
Net periodic defined benefit plan (credit) cost other than service cost | (110) |  |  | (80) |  |  | (199) |  |  | (170) |
Other, net | (20) |  |  | 25 |  |  | (41) |  |  | (12) |
| $ | (103) |  |  | $ | (387) |  |  | $ | (558) |  |  | $ | (325) |
(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 $380 million will be recorded in the third quarter of 2021 from ownership interests in investment funds. Interest paid for the six months ended June 30, 2021 and 2020 was $363 million and $387 million, respectively.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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