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Net Sales - Summary of Disaggregation of Net Sales by Geographical Region and Segment and Product Group (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
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Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales | $ 1,359 | $ 1,508 | $ 1,554 | $ 1,362 | $ 1,368 | $ 1,501 | $ 1,660 | $ 1,549 | $ 2,915 | $ 3,209 | $ 4,423 | $ 4,710 | $ 5,782 | $ 6,078 | $ 6,831
North America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 2,589 | 2,745 | 2,984
Asia Pacific [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,386 | 1,462 | 1,787
Europe, the Middle East, and Africa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,138 | 1,197 | 1,315
Latin America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 669 | 674 | 745
Transferred at a Point in Time [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 5,782 | 6,078 | 6,831
Transferred at a Point in Time [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,830 | 1,851 | 1,702
Transferred at a Point in Time [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 2,572 | 2,680 | 3,380
Transferred at a Point in Time [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,326 | 1,462 | 1,633
Transferred at a Point in Time [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 54 | 85 | 116
Transferred at a Point in Time [Member] | North America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 2,589 | 2,745 | 2,984
Transferred at a Point in Time [Member] | North America [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,029 | 1,076 | 996
Transferred at a Point in Time [Member] | North America [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,026 | 1,054 | 1,285
Transferred at a Point in Time [Member] | North America [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 499 | 556 | 632
Transferred at a Point in Time [Member] | North America [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 35 | 59 | 71
Transferred at a Point in Time [Member] | Asia Pacific [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,386 | 1,462 | 1,787
Transferred at a Point in Time [Member] | Asia Pacific [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 200 | 192 | 178
Transferred at a Point in Time [Member] | Asia Pacific [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 657 | 704 | 928
Transferred at a Point in Time [Member] | Asia Pacific [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 518 | 554 | 657
Transferred at a Point in Time [Member] | Asia Pacific [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 11 | 12 | 24
Transferred at a Point in Time [Member] | Europe, the Middle East, and Africa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,138 | 1,197 | 1,315
Transferred at a Point in Time [Member] | Europe, the Middle East, and Africa [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 362 | 369 | 320
Transferred at a Point in Time [Member] | Europe, the Middle East, and Africa [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 511 | 519 | 695
Transferred at a Point in Time [Member] | Europe, the Middle East, and Africa [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 258 | 297 | 283
Transferred at a Point in Time [Member] | Europe, the Middle East, and Africa [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 7 | 12 | 17
Transferred at a Point in Time [Member] | Latin America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 669 | 674 | 745
Transferred at a Point in Time [Member] | Latin America [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 239 | 214 | 208
Transferred at a Point in Time [Member] | Latin America [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 378 | 403 | 472
Transferred at a Point in Time [Member] | Latin America [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 51 | 55 | 61
Transferred at a Point in Time [Member] | Latin America [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 2 | 4
Transferred at a Point in Time [Member] | Titanium Dioxide and Other Minerals [Member] | Titanium Technologies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 2,572 | 2,680 | 3,380
Transferred at a Point in Time [Member] | Opteon Refrigerants [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 810 | 710 | 597
Transferred at a Point in Time [Member] | Freon Refrigerants [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 614 | 722 | 750
Transferred at a Point in Time [Member] | Foam, Propellants, and Other [Member] | Thermal & Specialized Solutions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 406 | 419 | 355
Transferred at a Point in Time [Member] | Advanced Materials [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 808 | 916 | 1,140
Transferred at a Point in Time [Member] | Performance Solutions [Member] | Advanced Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | 518 | 546 | 493
Transferred at a Point in Time [Member] | Performance Chemicals and Intermediates [Member] | Other Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Net Sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 54 | $ 85 | $ 116

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