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Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets, Net of Accumulated Amortization | Intangible assets, net of accumulated amortization, consisted of the following:
| March 31, 2021 |  | December 31, 2020
| Gross Cost |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Cost |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | $ | 291 |  |  | $ | (197) |  |  | $ | 94 |  |  | $ | 291 |  |  | $ | (193) |  |  | $ | 98 |
TiO 2 technology | 93 |  |  | (26) |  |  | 67 |  |  | 93 |  |  | (24) |  |  | 69 |
Internal-use software and other | 81 |  |  | (41) |  |  | 40 |  |  | 73 |  |  | (39) |  |  | 34 |
Intangible assets, net | $ | 465 |  |  | $ | (264) |  |  | $ | 201 |  |  | $ | 457 |  |  | $ | (256) |  |  | $ | 201 |

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