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PROPERTIES AND ACCUMULATED DEPRECIATION (Tables)
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Schedule of Properties
 
December 31,
(Dollars in millions)
2018
 
2017
Properties
 
 
 
Land
$
158

 
$
161

Buildings
1,385

 
1,325

Machinery and equipment
10,801

 
10,122

Construction in progress
387

 
762

Properties and equipment at cost
$
12,731

 
$
12,370

Less:  Accumulated depreciation
7,131

 
6,763

Net properties
$
5,600

 
$
5,607