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COMMITMENTS AND GUARANTEES (Other and Community Development Programs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other Commitments [Line Items] |  |  |
Total cost of sales | $ 11,655 | $ 13,125 | $ 13,466
Community Development Programs | PT-FI |  |  |
Other Commitments [Line Items] |  |  |
Total cost of sales | $ 36 | $ 28 | $ 55

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