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DIVESTITURES - Cash Flow Statement (Details) - Global Cellulose Fibers Business - Discontinued Operations, Disposed of by Sale - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash Provided By (Used For) Operating Activities $ 68 $ 38
Cash Provided By (Used For) Investment Activities $ (45) $ (36)