Announcement date of plant closing.

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Approved date of plant closing.

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contract termination charges.

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Effective date of plant closing.

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Restructuring charges asset-related and other charges.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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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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Restructuring, Asset-Related, and Other Charges - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	35 Months Ended	270 Months Ended
	Jan. 31, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2026	Jun. 30, 2026	Jun. 30, 2026
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related, and other charges		$ 3	$ 18	$ 16	$ 51
Asset-related impairment		0	12	1	24
Employee separation charges		0		9	14
Decommissioning and other charges		3	6	6	13
Cash payments				7
SPS CapstoneTM Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				6
Restructuring, asset-related, and other charges		2			6
Asset-related impairment		0	12	1	24
Employee separation charges			1		15
Decommissioning and other charges	$ 6	2	4	5	6
2024 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges								$ 51
Asset-related impairment								27
Employee separation charges			(1)		(1)			19
Decommissioning and other charges			1		2			$ 5
Cash payments				1
2024 Restructuring Program [Member] \| Advanced Performance Materials [Member] \| Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Decommissioning and other charges						$ 1
2026 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges		0		9
Cash payments				6
2026 Restructuring Program [Member] \| Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		1		$ 9
Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
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		1	$ 1	$ 1	$ 5
Titanium Technologies Transformation Plan [Member] \| Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges							$ 143
Asset-related impairment							78
Employee separation charges							20
Contract Termination Charges							14
Decommissioning and other charges							$ 31
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]							Restructuring, asset-related, and other charges
Titanium Technologies Transformation Plan [Member] \| Titanium Technologies [Member]
Restructuring Cost and Reserve [Line Items]
Decommissioning and other charges				1
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related, and other charges		0		2
Employee separation charges		0		2
Corporate [Member] \| 2026 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges		$ 0		$ 2