v3.26.3
Sale of Businesses - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2026
Sep. 08, 2025
Jul. 01, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disposal Group, Including Discontinued Operations [Line Items]              
Net (loss) earnings       $ (32) $ (315) $ (256) $ (385)
Paper Excellence Canada Holdings Corporation [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Transfer of Power Generation Assets [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Purchase price   $ 62          
Note receivable interest rate   10.00%          
Paper Excellence Canada Holdings Corporation [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Transfer of Power Generation Assets [Member] | Interest Bearing Notes One [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Note receivable on sale of business   $ 47          
Paper Excellence Canada Holdings Corporation [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Transfer of Power Generation Assets [Member] | Interest Bearing Notes Two [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Note receivable on sale of business   $ 15          
Forest Products Mauricie [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Assets sale for cash consideration     $ 15        
Gain from sale     $ 9        
Engineered Absorbent Materials Corporation [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Cash consideration for sale of business $ 8            
Engineered Absorbent Materials Corporation [Member] | Jesup, Georgia [Member]              
Disposal Group, Including Discontinued Operations [Line Items]              
Percentage of stock ownership sold 100.00%