INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Examination [Line Items]
Income tax provision (benefit)	$ 28	$ 12	$ 91	$ 25
Effective income tax rate reconciliation, percent	23.90%	18.50%	25.50%	18.80%
Income tax examination, estimate of possible loss			$ 107
Income tax examination, penalties and interest expense			$ 351
Income tax examination, tax liabilities payable, percentage	40.00%		40.00%
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%