| Document and Entity Information Document | Feb. 01, 2024 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 01, 2024 |
| Entity Registrant Name | International Paper Company |
| Entity Central Index Key | 0000051434 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | NY |
| Entity File Number | 1-3157 |
| Entity Tax Identification Number | 13-0872805 |
| Entity Address, Address Line One | 6400 Poplar Avenue |
| Entity Address, City or Town | Memphis |
| Entity Address, State or Province | TN |
| Entity Address, Postal Zip Code | 38197 |
| City Area Code | 901 |
| Local Phone Number | 419-9000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $1 per share par value |
| Trading Symbol | IP |
| Security Exchange Name | NYSE |
