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INVENTORIES (Tables) | 12 Months Ended
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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 | )

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