INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Tax Examination [Line Items]
Income tax provision (benefit)	$ (3)	$ 6
Effective income tax rate reconciliation, percent	50.00%	18.00%
Income tax examination, estimate of possible loss	$ 113
Income tax examination, penalties and interest expense	313
Income tax examination, tax liability, threshold	$ 300
International Paper
Income Tax Examination [Line Items]
Income tax examination, tax liabilities payable, percentage	60.00%
Sylvamo
Income Tax Examination [Line Items]
Income tax examination, tax liabilities payable, percentage	40.00%