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BUSINESS AND GEOGRAPHIC AREAS
 12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Business and Geographic Regions
BUSINESS AND GEOGRAPHIC REGIONS
Dow conducts its worldwide operations through principal product groups, and the Corporation's business activities comprise components of Dow's principal product groups rather than stand-alone operations. The Corporation sells substantially all of its products to Dow in order to simplify the customer interface process at market-based prices in accordance with Dow's intercompany pricing policy. Because there are no separable reportable business segments for the Corporation and no detailed business information is provided to a chief operating decision maker regarding the Corporation's stand-alone operations, the Corporation's results are reported as a single operating segment.

Sales are attributed to geographic regions based on customer location; long-lived assets are attributed to geographic regions based on asset location. Sales to external customers and long-lived assets by geographic region were as follows:

Geographic Region Information
United States
Asia Pacific
Rest of World
Total
In millions
2018
 
 
 
 
Sales to external customers 1
$
124

$
2

$
10

$
136

Long-lived assets
$
1,413

$
10

$
25

$
1,448

2017
 
 
 
 
Sales to external customers 1
$
110

$
21

$
12

$
143

Long-lived assets
$
1,341

$
9

$
29

$
1,379

2016
 
 
 
 
Sales to external customers 1
$
95

$
3

$
10

$
108

Long-lived assets
$
1,353

$
10

$
31

$
1,394


1.
Of total sales to external customers, sales in Malaysia were approximately 1 percent in 2018, 15 percent in 2017 and 3 percent in 2016, and are included in Asia Pacific.