BACKGROUND AND SUMMARY OF BUSINESS (Details)	Oct. 01, 2021
International Paper \| Sylvamo Corporation
Schedule of Equity Method Investments [Line Items]
Ownership percentage by parent	19.90%
International Paper
Schedule of Equity Method Investments [Line Items]
Spinoff transaction, common stock distributed, percentage	80.10%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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