INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Tax Examination [Line Items]
Income tax provision	$ 12	$ 5	$ 9	$ 11
Effective income tax rate reconciliation, percent	1200.00%	25.00%	(180.00%)	21.00%
Deferred Tax Assets, Valuation Allowance	$ 12		$ 12
Income tax examination, estimate of possible loss			113
Income tax examination, penalties and interest expense			321
Income tax examination, tax liability, threshold	$ 300		$ 300
International Paper
Income Tax Examination [Line Items]
Income tax examination, tax liabilities payable, percentage	60.00%		60.00%
Sylvamo
Income Tax Examination [Line Items]
Income tax examination, tax liabilities payable, percentage	40.00%		40.00%