DIVESTITURES (Note)	3 Months Ended
Mar. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Note Text Block]	On October 1, 2021, the Company completed the previously announced spin-off of its Printing Papers segment along with certain mixed-use coated paperboard and pulp businesses in North America, France and Russia into a standalone, publicly-traded company, Sylvamo Corporation. The transaction was implemented through the distribution of shares of the standalone company to International Paper's shareholders (the "Distribution"). The Company retained 19.9% of the shares of Sylvamo at the time of the separation and this investment is discussed further in Note 8 - Supplementary Financial Statement Information. As a result of the Distribution, Sylvamo Corporation is an independent public company that trades on the New York Stock Exchange under the symbol "SLVM". In connection with the Distribution, the Company and Sylvamo entered into a separation and distribution agreement as well as various other agreements that govern the relationships between the parties following the Distribution, including a transition services agreement, a tax matters agreement and an employee matters agreement. These agreements provide for the allocation between the Company and Sylvamo of assets, liabilities and obligations attributable to periods prior to, at and after the Distribution and govern certain relationships between the Company and Sylvamo after the Distribution. The Company has various ongoing operational agreements with Sylvamo under which it sells fiber, paper and other products. Related party sales under these agreements were $198 million for the three months ended March 31, 2022. Following the sale of its ownership interest in Sylvamo during the third quarter 2022, Sylvamo is no longer considered a related party.

DIVESTITURES (Note)

3 Months Ended

Mar. 31, 2023

Discontinued Operations and Disposal Groups [Abstract]

Disposal Groups, Including Discontinued Operations, Disclosure [Note Text Block]

On October 1, 2021, the Company completed the previously announced spin-off of its Printing Papers segment along with certain mixed-use coated paperboard and pulp businesses in North America, France and Russia into a standalone, publicly-traded company, Sylvamo Corporation. The transaction was implemented through the distribution of shares of the standalone company to International Paper's shareholders (the "Distribution"). The Company retained 19.9% of the shares of Sylvamo at the time of the separation and this investment is discussed further in Note 8 - Supplementary Financial Statement Information. As a result of the Distribution, Sylvamo Corporation is an independent public company that trades on the New York Stock Exchange under the symbol "SLVM". In connection with the Distribution, the Company and Sylvamo entered into a separation and distribution agreement as well as various other agreements that govern the relationships between the parties following the Distribution, including a transition services agreement, a tax matters agreement and an employee matters agreement. These agreements provide for the allocation between the Company and Sylvamo of assets, liabilities and obligations attributable to periods prior to, at and after the Distribution and govern certain relationships between the Company and Sylvamo after the Distribution. The Company has various ongoing operational agreements with Sylvamo under which it sells fiber, paper and other products. Related party sales under these agreements were $198 million for the three months ended March 31, 2022. Following the sale of its ownership interest in Sylvamo during the third quarter 2022, Sylvamo is no longer considered a related party.