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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets Disclosure [Text Block] | GOODWILL AND OTHER INTANGIBLE ASSETS 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 |
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 |
Included in the balance of timber licenses are values allocated to Canadian forest licenses whose initial value of $91 million and is amortized over the estimated useful life of twenty to twenty-five yea rs. Amortization expense related to definite-lived intangible assets was $5 million, $4 million and $3 million for the years ended December 31, 2019, 2018 and 2017, respectively. Developed technology is included in Goodwill and other intangible assets on the Consolidated Balance Sheets. Amortization of the above intangible assets will be $5 million per year over the next five years.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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