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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Tables)
 6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Accounts and Notes Receivable Net
Accounts and notes receivable, net, by classification were:

In millions
June 30, 2026December 31, 2025
Accounts and notes receivable:
Trade
$342 $399 
Notes and other
24 25 
Total
$366 $424 
Schedule of Inventories
In millions
June 30, 2026December 31, 2025
Raw materials
$70 $69 
Finished paper and pulp products
299 217 
Operating supplies
124 122 
Other
10 10 
Total
$503 $418 
Schedule of Interest Expense
Amounts related to interest were as follows:

Three Months Ended June 30,Six Months Ended June 30,
In millions
2026202520262025
Interest expense (a)
$15 $12 $27 $24 
Interest income
(2)(1)(4)(3)
Capitalized interest costs
(2)(1)(3)(2)
Total
$11 $10 $20 $19 
(a) Interest expense for the three and six months ended June 30, 2026 includes $2 million of debt extinguishment cost related to the repayment of Term Loan F.