EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings (loss) from continuing operations	$ 172	$ 267
Weighted average common shares outstanding	349.3	375.2
Restricted performance share plan	4.0	4.0
Weighted average common shares outstanding – assuming dilution	353.3	379.2
Basic earnings (loss) per share from continuing operations	$ 0.49	$ 0.71
Diluted earnings (loss) per share from continuing operations	$ 0.49	$ 0.70