Restructuring, Asset-Related, and Other Charges - Schedule of Restructuring Programs to Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 20	$ 44	$ 45
Asset-related charges	22	43	4
Total restructuring, asset-related, and other charges	80	87	49
Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5	20	13
2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	3	27
2018 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	(1)	5
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	22	0
2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	13	0	0
Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Other charges	38	0	0
Operating Segments [Member] \| Chemical Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges	8	34	4
Other charges	37	0	0
Operating Segments [Member] \| Chemical Solutions [Member] \| Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	2	4
Operating Segments [Member] \| Chemical Solutions [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	2
Operating Segments [Member] \| Chemical Solutions [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	0
Operating Segments [Member] \| Chemical Solutions [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	0	0
Operating Segments [Member] \| Titanium Technologies [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges	0	9	0
Other charges	1	0	0
Operating Segments [Member] \| Titanium Technologies [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	1
Operating Segments [Member] \| Titanium Technologies [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	5	0
Operating Segments [Member] \| Titanium Technologies [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	0	0
Operating Segments [Member] \| Thermal & Specialized Solutions [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	4
Operating Segments [Member] \| Thermal & Specialized Solutions [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	3	0
Operating Segments [Member] \| Thermal & Specialized Solutions [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	0	0
Operating Segments [Member] \| Advanced Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges	10	0	0
Operating Segments [Member] \| Advanced Performance Materials [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	5
Operating Segments [Member] \| Advanced Performance Materials [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	4	0
Operating Segments [Member] \| Advanced Performance Materials [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	0	0
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges	4	0	0
Corporate and Other [Member] \| Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	18	9
Corporate and Other [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	0	15
Corporate and Other [Member] \| 2018 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	(1)	5
Corporate and Other [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	9	0
Corporate and Other [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5	$ 0	$ 0

Restructuring charges asset-related and other charges.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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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