DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Customer Supply Agreements [Member] | Sales [Member] | Ìý | Ìý | Ìý |
| Derivative Instruments, Gain (Loss) [Line Items] | Ìý | Ìý | Ìý |
| Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ 122 | $ 78 | $ 426 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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