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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Tables)
 6 Months Ended
Jun. 30, 2023
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, 2023December 31, 2022
Accounts and notes receivable:
Trade
$416 $430 
Notes and other
24 20 
Total
$440 $450 
Schedule of Inventories
In millions
June 30, 2023December 31, 2022
Raw materials
$77 $40 
Finished paper and pulp products
293 226 
Operating supplies
104 78 
Other
12 20 
Total$486 $364 
Schedule of Interest Expense
Amounts related to interest were as follows:

Three Months Ended
June 30,		Six Months Ended
June 30,
In millions
2023202220232022
Interest expense (a)
$15 $20 $34 $39 
Interest income (b)
(2)(2)(13)(4)
Capitalized interest cost(1)(1)(2)(1)
Total$12 $17 $19 $34 
(a)    Interest expense for the six months ended June 30, 2023 includes $5 million of debt extinguishment cost related to the tender offer for our 7.00% 2029 Senior Notes.
(b) Interest income for the six months ended June 30, 2023 includes $9 million of interest income related to tax settlements.