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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - The Pre-tax (Losses) Gains Included in the Consolidated Statements of Operations (Details) - Not designated as a hedge - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Derivative instruments and hedging activities |  |  |
Total (loss) gain | $ (1) | $ (4) | $ 3
Foreign currency exchange contracts | Other, net |  |  |
Derivative instruments and hedging activities |  |  |
Total (loss) gain | 1 | (1) | 0
Foreign currency forward contracts | Other, net |  |  |
Derivative instruments and hedging activities |  |  |
Total (loss) gain | 0 | 1 | 0
Metals contracts | Cost of sales |  |  |
Derivative instruments and hedging activities |  |  |
Total (loss) gain | 0 | 0 | 5
Interest Rate Swaps | Other, net |  |  |
Derivative instruments and hedging activities |  |  |
Total (loss) gain | $ (2) | $ (4) | $ (2)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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