Corporate expenses.

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Foreign currency transaction gain (loss), including gain (loss) on derivative.

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Gain (loss) on sale of assets and businesses included in other income (expense) net.

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- Definition

Litigation related charges.

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- Definition

Non operating pension and other post retirement employee benefit (cost) income.

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Other Non Reportable Segment Adjusted E B I T D A

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- Definition

Qualified spend recovery amount recognized.

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- Definition

Restructuring charges asset-related and other charges net.

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- Definition

Segment adjusted EBITDA.

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- Definition

Transaction fees.

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Information - Reconciliation of Segment Adjusted EBITDA from Segments to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Segment Adjusted EBITDA	$ 223			$ 249
Other non-reportable segment Adjusted EBITDA	1			2
Corporate expenses	(57)			(55)
Interest expense, net	(66)	$ (68)		(63)		$ (196)	$ (263)
Depreciation and amortization	(88)			(71)		(218)	(292)	$ (309)
Non-operating pension and other post-retirement employee benefit income	2			1
Exchange (losses) gains, net	(3)			1
Restructuring, asset-related, and other charges	(21)			(4)
Gain on sales of assets and businesses, net	1			3
Transaction costs	(1)			(5)
Qualified spend recovery	9			7
Litigation-related charges				(5)
Income before income taxes		$ (32)	$ 69	70	$ 138	$ 106	$ 106
Titanium Technologies [Member]
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Segment Adjusted EBITDA	50			69
Thermal & Specialized Solutions [Member]
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Segment Adjusted EBITDA	141			150
Advanced Performance Materials [Member]
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Segment Adjusted EBITDA	$ 32			$ 30