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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | Changes in goodwill by segment for the year ended December 31, 2019 and 2018 are provided in the following table:
Dollar amounts in millions | Siding | OSB | Other | Total
Balance December 31, 2017 | $ | — |  | $ | 16 |  | $ | — |  | $ | 16 |
Additions | — |  | — |  | — |  | — |
Balance December 31, 2018 | $ | — |  | $ | 16 |  | $ | — |  | $ | 16 |
Additions (see Note 8) | 4 |  | — |  | 10 |  | 14 |
Balance December 31, 2019 | $ | 4 |  | $ | 16 |  | $ | 10 |  | $ | 30 |
Schedule of Intangible Assets and Goodwill [Table Text Block] | Changes in other intangible assets for the year ended December 31, 2019 and 2018 are provided in the following table:
Dollar amounts in millions | Timber Licenses | Developed Technology | Trademark | Total Other Intangibles
Balance December 31, 2017 | $ | 44 |  | $ | 11 |  | $ | — |  | $ | 55 |
Amortization | (3 | ) | (1 | ) | — |  | (4 | )
Balance December 31, 2018 | 41 |  | 10 |  | — |  | 51 |
Additions (see Note 8) | — |  | 12 |  | 3 |  | 15 |
Amortization | (3 | ) | (2 | ) | — |  | (5 | )
Balance December 31, 2019 | $ | 38 |  | $ | 20 |  | $ | 3 |  | $ | 61 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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