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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Tables)
 9 Months Ended
Sep. 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
September 30, 2026December 31, 2025
Accounts and notes receivable:
Trade
$290 $336 
Notes and other
13 12 
Total
$303 $348 
Schedule of Inventories
In millions
September 30, 2026December 31, 2025
Raw materials
$29 $23 
Finished paper and pulp products
239 144 
Operating supplies
98 94 
Other
3 — 
Total
$369 $261 
Schedule of Interest Expense
Amounts related to interest were as follows:

Three Months Ended September 30,Nine Months Ended September 30,
In millions
2026202520262025
Interest expense (a)
$14 $10 $39 $30 
Interest income
(1)(2)(5)(4)
Capitalized interest costs
(2)(1)(4)(2)
Total
$11 $7 $30 $24 
(a) Interest expense for the nine months ended September 30, 2026 includes $2 million of debt extinguishment cost related to the repayment of Term Loan F.