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Other (Income) Expense, Net (Tables)
 12 Months Ended
Dec. 31, 2018
Other Income and Expenses [Abstract]  
Other (Income) Expense, Net
Other (income) expense, net, consisted of:
Years Ended December 31
2018
 
2017
 
2016
Interest income
$
(343
)
 
$
(385
)
 
$
(328
)
Interest expense
772

 
754

 
693

Exchange losses (gains)
145

 
(11
)
 
174

Income on investments in equity securities, net (1)
(324
)
 
(352
)
 
(43
)
Net periodic defined benefit plan (credit) cost other than service cost
(512
)
 
(512
)
 
(531
)
Other, net
(140
)
 
6

 
224

 
$
(402
)
 
$
(500
)
 
$
189


(1) Includes net realized and unrealized gains and losses on investments in equity securities either owned directly or through ownership interests in investment funds.