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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | Receivables consisted of the following:
| December 31,
| 2020 |  | 2019
Trade receivables | $ | 161 |  |  | $ | 111 |
Income tax receivable | 2 |  |  | 35 |
Other receivables | 23 |  |  | 19 |
Allowance for doubtful accounts | (2) |  |  | (1) |
| $ | 184 |  |  | $ | 164 |
Schedule of Inventory, Current [Table Text Block] | Inventories Inventories are valued at the lower of cost or net realizable value. Inventory costs include materials, labor, and operating overhead. The FIFO (first-in, first out) or average cost methods are used to value our inventories as of December 31, 2020. Included in the inventory balance is a lower of cost or market adjustment of $12 million as of December 31, 2020, and $13 million as of December 31, 2019. Inventory consisted of the following:
| December 31,
| 2020 |  | 2019
Logs | $ | 49 |  |  | $ | 47 |
Other raw materials | 36 |  |  | 32 |
Semi-finished inventory | 28 |  |  | 26 |
Finished products | 146 |  |  | 160 |
Total | $ | 259 |  |  | $ | 265 |
Depreciation expense [Table Text Block] | Depreciation and amortization expense on property, plant, and equipment is included in our Consolidated Statements of Income as noted below:
| Year ended December 31,
2020 |  | 2019 |  | 2018
Cost of sales | $ | 103 |  |  | $ | 115 |  |  | $ | 113 |
Selling, general and administrative expenses | 3 |  |  | 3 |  |  | 3 |
Total depreciation and amortization | $ | 106 |  |  | $ | 118 |  |  | $ | 116 |
Property, Plant and Equipment [Table Text Block] | Property, plant, and equipment, including capitalized interest, are recorded at cost and consisted of the following:
| December 31,
2020 |  | 2019
Property, plant, and equipment, at cost: |  |  |
Land, land improvements, and logging roads, net of road amortization | $ | 172 |  |  | $ | 168 |
Buildings | 356 |  |  | 350 |
Machinery and equipment | 1,971 |  |  | 1,965 |
Construction in progress | 63 |  |  | 46 |
| 2,562 |  |  | 2,529 |
Accumulated depreciation | (1,644) |  |  | (1,564) |
Property, plant, and equipment, net | $ | 918 |  |  | $ | 965 |
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] | Accounts payable and accrued liabilities were as follows:
| December 31,
| 2020 |  | 2019
Trade accounts payable | $ | 125 |  |  | $ | 127 |
Salaries and wages payable | 62 |  |  | 48 |
Accrued rebates | 44 |  |  | 34 |
Taxes other than income taxes | 15 |  |  | 7 |
Current portion of operating lease liabilities | 8 |  |  | 8 |
Other accrued liabilities | 13 |  |  | 18 |
Total Accounts payable and accrued liabilities | $ | 267 |  |  | $ | 242 |
Other Noncurrent Liabilities [Table Text Block] | Other long-term liabilities were as follows:
| December 31,
| 2020 |  | 2019
Pension benefit obligation | $ | 17 |  |  | $ | 23 |
Asset retirement obligations | 10 |  |  | 11 |
Uncertain tax positions | 9 |  |  | 37 |
Post-retirement obligations | 9 |  |  | 9 |
Warranty reserves | 6 |  |  | 6 |
Other | 35 |  |  | 39 |
Total Other long-term liabilities | $ | 86 |  |  | $ | 125 |
Schedule of Asset Retirement Obligations [Table Text Block] | The activity in our asset retirement obligation liability for 2020 and 2019 is summarized in the following table.
| Year ended December 31,
2020 |  | 2019
Beginning balance | $ | 11 |  |  | $ | 12 |
Accretion expense | 1 |  |  | 1 |
Adjusted to expense during the year | (1) |  |  | (2) |
Adjusted to other operating credits and charges, net | — |  |  | — |
Ending balance | $ | 10 |  |  | $ | 11 |

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