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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of activity in reserves for excess and obsolete inventory
The following table shows the activity in the reserves for excess and obsolete inventory (in millions of dollars):
 
For the Years Ended December 31,
 
2018
 
2017
Balance at beginning of period
$
(193
)
 
$
(191
)
Provision for excess and obsolete inventory
(20
)
 
(25
)
Disposal of unsaleable inventory
55

 
29

Other
4

 
(6
)
Balance at end of period
$
(154
)
 
$
(193
)