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BACKGROUND AND SUMMARY OF BUSINESS (Details)
$ in Millions
12 Months Ended
Sep. 29, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2022
term_loan
Oct. 01, 2021
Sep. 30, 2021
USD ($)
term_loan
Schedule of Equity Method Investments [Line Items]            
General corporate expenses   $ 119 $ 169      
Long-term debt           $ 1,500
Number of term loans | term_loan       2   2
Seven Percent Senior Notes Due 2029 | Senior Notes            
Schedule of Equity Method Investments [Line Items]            
Debt Instrument, interest rate, stated percentage       7.00%   7.00%
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%  
International Paper | Special Payment            
Schedule of Equity Method Investments [Line Items]            
Payment related to letter agreement $ 1,500