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EQUITY - NARRATIVE (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jul. 28, 2021
Equity [Abstract] |  |  |  |
Stock repurchase program, authorized amount |  |  |  | $ 1,000
Treasury shares purchased | $ 200 | $ 140 | $ 260 |
Share repurchase program, remaining authorization | 890 |  |  |
Proceeds from exercised stock options | $ 51 | $ 11 | $ 109 |
Number of stock option exercised (in shares) | 1.1 | 0.3 | 2.7 |

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