INVENTORIES - Inventories (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Inventory [Line Items] | ||
| Total | $ 592 | $ 593 |
| Logs | ||
| Inventory [Line Items] | ||
| LIFO inventories | 20 | 28 |
| Moving average cost or FIFO inventories | 31 | 39 |
| Lumber, plywood, oriented strand board and fiberboard | ||
| Inventory [Line Items] | ||
| LIFO inventories | 80 | 74 |
| Lumber, plywood, oriented strand board, fiberboard and engineered wood products | ||
| Inventory [Line Items] | ||
| Moving average cost or FIFO inventories | 111 | 107 |
| Other products | ||
| Inventory [Line Items] | ||
| LIFO inventories | 9 | 9 |
| Moving average cost or FIFO inventories | 168 | 173 |
| Materials and supplies | ||
| Inventory [Line Items] | ||
| Moving average cost or FIFO inventories | $ 173 | $ 163 |