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Research and Development Expense - Summary of R&D Expense by Segment and Corporate and Other (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Research and Development [Line Items] |  |  |
Total research and development expense | $ 109 | $ 108 | $ 118
Operating Segments [Member] | Titanium Technologies [Member] |  |  |
Research and Development [Line Items] |  |  |
Total research and development expense | 28 | 32 | 34
Operating Segments [Member] | Thermal & Specialized Solutions [Member] |  |  |
Research and Development [Line Items] |  |  |
Total research and development expense | 29 | 25 | 25
Operating Segments [Member] | Advanced Performance Materials [Member] |  |  |
Research and Development [Line Items] |  |  |
Total research and development expense | 50 | 48 | 54
Operating Segments [Member] | Other Segment [Member] |  |  |
Research and Development [Line Items] |  |  |
Total research and development expense | 1 | 1 | 1
Corporate [Member] |  |  |
Research and Development [Line Items] |  |  |
Total research and development expense | $ 1 | $ 2 | $ 4

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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 730 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482916/730-10-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 912 -SubTopic 730 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479532/912-730-25-1 + Details
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