INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Income Tax Examination [Line Items]
Income tax provision (benefit)	$ (14)	$ 34	$ 2	$ 48
Effective income tax rate reconciliation, percent	(20.00%)	32.00%	2.00%	23.00%
Deferred Tax Assets, Valuation Allowance	$ 15		$ 15
Income tax examination, estimate of possible loss			113
Income tax examination, penalties and interest expense			327
Income tax examination, tax liability, threshold	300		300
Discontinued Operations, Held-for-Sale or Disposed of by Sale | Europe Segment [Member]
Income Tax Examination [Line Items]
Income tax provision (benefit)	(4)	$ (3)	(11)	$ (6)
Other Tax Expense (Benefit)	$ 36		$ 36
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%