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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Balances | The carrying amount of goodwill attributable to each reportable segment and the changes in those balances during the nine months ended June 30, 2023 are as follows:
|  | Reinforcement Materials |  |  | Performance Chemicals |  |  | Total |
|  | (In millions) |
Balance at September 30, 2022 |  | $ | 46 |  |  | $ | 83 |  |  | $ | 129 |
Foreign currency impact |  |  | 6 |  |  |  | 1 |  |  | $ | 7 |
Balance at June 30, 2023 |  | $ | 52 |  |  | $ | 84 |  |  | $ | 136 |
Schedule of Intangible Assets | The following table provides information regarding the Company’s intangible assets:
|  | June 30, 2023 |  |  | September 30, 2022 |
|  | Gross Carrying Value |  |  | Accumulated Amortization |  |  | Net Intangible Assets |  |  | Gross Carrying Value |  |  | Accumulated Amortization |  |  | Net Intangible Assets |
|  | (In millions) |
Intangible assets with finite lives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Developed technologies |  | $ | 34 |  |  | $ | (9 | ) |  | $ | 25 |  |  | $ | 34 |  |  | $ | (8 | ) |  | $ | 26 |
Trademarks |  |  | 2 |  |  |  | (1 | ) |  | $ | 1 |  |  |  | 2 |  |  |  | (1 | ) |  |  | 1 |
Customer relationships |  |  | 67 |  |  |  | (30 | ) |  | $ | 37 |  |  |  | 59 |  |  |  | (23 | ) |  |  | 36 |
Total intangible assets |  | $ | 103 |  |  | $ | (40 | ) |  | $ | 63 |  |  | $ | 95 |  |  | $ | (32 | ) |  | $ | 63 |

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