PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Defined Contribution Plan (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Postemployment Benefits [Abstract] | Ìý | Ìý | Ìý |
| Defined contribution pension plans | $ 22 | $ 3 | $ 3 |
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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