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Restructuring, Asset-Related, and Other Charges - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended | 17 Months Ended | 24 Months Ended | 36 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2026 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  | $ 27 | $ 97 | $ 5 |  |  |
Decommissioning and other charges |  |  | 14 | 31 | 2 |  |  |
Payments |  |  | (20) | (17) |  |  |  |
Environmental remediation liabilities |  |  | 70 | 66 | 269 |  |  |
Employee separation related liabilities |  |  | 13 | 14 | 6 | $ 13 | $ 13 | $ 13
Employee separation charges |  |  | 19 | 25 | 9 |  |  |
2022 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  | 8
Payments |  |  | 0 | (5) |  |  |  |
Employee separation related liabilities |  |  | 0 | 0 | 6 | 0 | 0 | 0
Employee separation charges |  |  |  | (1) |  |  |  |
2023 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Payments |  |  | (4) | 0 |  |  |  |
Employee separation related liabilities |  |  | 0 | 4 | 0 | 0 | 0 | 0
Employee separation charges |  |  |  | 4 |  |  | 4 |
2024 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  | 27 |  |  |  |  |
Restructuring charges |  |  | 50 |  |  |  |  |
Decommissioning and other charges |  |  | 3 |  |  |  |  |
Payments |  |  | (8) | 0 |  |  |  |
Employee separation related liabilities |  |  | 12 | 0 | 0 | 12 | 12 | 12
Employee separation charges |  |  | $ 20 |  |  |  |  |
Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 78 |  |  |  |
Announcement date of plant closing |  |  | Jul. 27, 2023 |  |  |  |  |
Effective date of plant closing |  |  | Aug. 01, 2023 |  |  |  |  |
Approved date of plant closing |  |  | Jul. 26, 2023 |  |  |  |  |
Decommissioning and other charges |  |  | $ 11 | 27 |  |  |  |
Payments |  |  | (8) | (11) |  |  |  |
Employee separation related liabilities |  |  | 1 | 10 | 0 | 1 | 1 | 1
Employee separation charges |  |  | (1) | 21 |  |  |  |
ERP Implementation Abandonment [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 11 |  |  |  |
Contract Termination Charges | $ 4 |  |  |  |  |  |  |
Decommissioning and other charges |  |  |  | 4 |  |  |  |
Payments |  |  | 0 | (1) |  |  |  |
Write-Off of Deferred Software Development Costs | 11 |  |  |  |  |  |  |
Employee separation related liabilities |  |  | 0 | 0 | 0 | 0 | 0 | $ 0
Employee separation charges | $ 1 |  |  | 1 |  |  |  |
Facility Closing [Member] | Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  |  |  | 78 |  |
Restructuring charges |  |  |  |  |  | $ 130 |  |
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  | Restructuring Charges Asset Related And Other Charges |  | Restructuring Charges Asset Related And Other Charges
Contract Termination Charges |  |  |  |  |  | $ 14 |  |
Decommissioning and other charges |  |  |  |  |  | 24 |  |
Payments |  |  | (48) |  |  |  |  |
Write off raw materials and stores inventories |  |  |  | 40 |  |  |  |
Decommissioning Dismantling And Other Charges Recovery |  |  | 11 |  |  |  |  |
Employee separation charges |  |  |  |  |  | 14 |  |
Corporate [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 12 |  |  |  |
Decommissioning and other charges |  |  |  | 4 |  |  |  |
Employee separation charges |  |  | 6 | 1 | 4 |  |  |
Corporate [Member] | 2022 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  | (1) |  |  |  |
Corporate [Member] | 2023 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  | 1 |  |  | 1 |
Corporate [Member] | 2024 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  | 6 |  |  |  |  |
Corporate [Member] | Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 1 |  |  |  |
Corporate [Member] | ERP Implementation Abandonment [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 11 |  |  |  |
Decommissioning and other charges |  |  |  | 4 |  |  |  |
Employee separation charges |  |  |  | 1 |  |  |  |
Titanium Technologies [Member] | Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Contract termination liabilities |  |  | 14 |  |  | 14 | 14 | $ 14
Liabilities paid |  |  | 10 |  |  | 10 | 10 | 10
Remaining outstanding liability |  |  | 4 |  |  | 4 | 4 | $ 4
Titanium Technologies [Member] | Facility Closing [Member] | Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  |  |  | $ 6 |  |
Titanium Technologies [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 77 | 5 |  |  |
Decommissioning and other charges |  |  | 11 | 27 |  |  |  |
Employee separation charges |  |  | (1) | 21 | 1 |  |  |
Titanium Technologies [Member] | Operating Segments [Member] | Titanium Technologies Transformation Plan [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 77 |  |  |  |
Decommissioning and other charges |  |  | 11 | 27 |  |  |  |
Employee separation charges |  |  | (1) | 21 |  |  |  |
Advanced Performance Materials [Member] | 2023 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  |  |  |  | $ 3 |
Advanced Performance Materials [Member] | Forecast [Member] | 2024 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Decommissioning and other charges |  | $ 3 |  |  |  |  |  |
Advanced Performance Materials [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  | 27 |  |  |  |  |
Decommissioning and other charges |  |  | 3 |  |  |  |  |
Employee separation charges |  |  | 14 | 2 | 3 |  |  |
Advanced Performance Materials [Member] | Operating Segments [Member] | 2022 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  | (1) |  |  |  |
Advanced Performance Materials [Member] | Operating Segments [Member] | 2023 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  | 3 |  |  |  |
Advanced Performance Materials [Member] | Operating Segments [Member] | 2024 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  | 27 |  |  |  |  |
Decommissioning and other charges |  |  | 3 |  |  |  |  |
Employee separation charges |  |  | $ 14 |  |  |  |  |
Thermal & Specialized Solutions [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Asset-related impairment |  |  |  | 8 |  |  |  |
Employee separation charges |  |  |  | 1 | 1 |  |  |
Thermal & Specialized Solutions [Member] | Operating Segments [Member] | 2022 Restructuring Program [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Employee separation charges |  |  |  | $ 1 |  |  |  |
Other Segment [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Decommissioning and other charges |  |  |  |  | $ 2 |  |  |

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