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Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total net sales	$ 804	$ 662	$ 2,398	$ 2,164
TiO2
Disaggregation of Revenue [Line Items]
Total net sales	616	558	1,874	1,729
Zircon
Disaggregation of Revenue [Line Items]
Total net sales	74	33	247	200
Other products
Disaggregation of Revenue [Line Items]
Total net sales	114	71	277	235
North America
Disaggregation of Revenue [Line Items]
Total net sales	212	191	626	584
South and Central America
Disaggregation of Revenue [Line Items]
Total net sales	54	37	151	119
Europe, Middle-East and Africa
Disaggregation of Revenue [Line Items]
Total net sales	332	256	949	858
Asia Pacific
Disaggregation of Revenue [Line Items]
Total net sales	$ 206	$ 178	$ 672	$ 603

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