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INCOME TAXES - Gross Unrecognized Income Tax Benefits (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at January 1 | $ 1,361 | $ 1,300 | $ 1,235
Increases and decreases as a result of positions taken during prior years |  |  |
Other increases, including currency translation | 6 | 22 | 42
Other decreases, including currency translation | (31) | (22) | (5)
Increases as a result of positions taken during the current year | 86 | 93 | 86
Decreases relating to settlements with tax authorities | (20) | (18) | (6)
Decreases as a result of a lapse of the applicable statute of limitations | (102) | (14) | (52)
Balance at December 31 | $ 1,300 | $ 1,361 | $ 1,300

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