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Intangible Assets, net (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets, Net of Accumulated Amortization | Intangible Assets, net of accumulated amortization, consisted of the following:
| December 31, 2022 |  | December 31, 2021
| Gross Cost |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Cost |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | $ | 291 |  |  | $ | (231) |  |  | $ | 60 |  |  | $ | 291 |  |  | $ | (211) |  |  | $ | 80 |
TiO 2 technology | 93 |  |  | (37) |  |  | 56 |  |  | 93 |  |  | (31) |  |  | 62 |
Internal-use software and other | 179 |  |  | (45) |  |  | 134 |  |  | 120 |  |  | (45) |  |  | 75 |
Intangible assets, net | $ | 563 |  |  | $ | (313) |  |  | $ | 250 |  |  | $ | 504 |  |  | $ | (287) |  |  | $ | 217 |
Amortization Expense Related to Intangible Assets | The table below summarizes amortization expense related to intangible assets for the periods presented, recorded in the specific line items in our Consolidated Statements of Income:
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Cost of goods sold | $ | 2 |  |  | $ | 2 |  |  | $ | 2 |
Selling, general and administrative expenses | 29 |  |  | 31 |  |  | 31 |
Total | $ | 31 |  |  | $ | 33 |  |  | $ | 33 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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