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Restructuring And Other Initiatives (Tables)
 12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs
The following table summarizes the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges:
 
Years Ended December 31,

2017

2016

2015
Balance at beginning of period
$
268


$
383


$
627

Additions, interest accretion and other
330


412


545

Payments
(315
)

(490
)

(360
)
Revisions to estimates and effect of foreign currency
(56
)

(37
)

(429
)
Balance at end of period
$
227


$
268


$
383