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Other (Income) Expense, Net | 6 Months Ended
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Jun. 30, 2018
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) | 2018 |  | 2017 |  | 2018 |  | 2017
Interest income | $ | (81 | ) |  | $ | (96 | ) |  | $ | (165 | ) |  | $ | (194 | )
Interest expense | 194 |  |  | 193 |  |  | 379 |  |  | 375 |
Exchange losses | 71 |  |  | 19 |  |  | 77 |  |  | 11 |
Equity (gains) losses from affiliates | (64 | ) |  | (5 | ) |  | (12 | ) |  | 8 |
Net periodic defined benefit plan (credit) cost other than service cost | (130 | ) |  | (131 | ) |  | (265 | ) |  | (260 | )
Other, net | (38 | ) |  | (53 | ) |  | (354 | ) |  | (83 | )
| $ | (48 | ) |  | $ | (73 | ) |  | $ | (340 | ) |  | $ | (143 | )
Other, net (as reflected in the table above) in the first six months of 2018 includes a $115 million gain on the settlement of certain patent litigation (see Note 8). Interest paid for the six months ended June 30, 2018 and 2017 was $341 million and $343 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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