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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 708	$ 965	$ 965
TiO2
Disaggregation of Revenue [Line Items]
Net sales	560	773
Zircon
Disaggregation of Revenue [Line Items]
Net sales	72	108
Feedstock and other products
Disaggregation of Revenue [Line Items]
Net sales	76	84
North America
Disaggregation of Revenue [Line Items]
Net sales	189	195
South and Central America
Disaggregation of Revenue [Line Items]
Net sales	42	67
Europe, Middle-East and Africa
Disaggregation of Revenue [Line Items]
Net sales	282	377
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	$ 195	$ 326

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