Net Sales - Summary of Disaggregation of Net Sales by Geographical Region and Segment and Product Group (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales	$ 1,359	$ 1,508	$ 1,554	$ 1,362	$ 1,368	$ 1,501	$ 1,660	$ 1,549	$ 2,915	$ 3,209	$ 4,423	$ 4,710	$ 5,782	$ 6,078	$ 6,831
North America [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													2,589	2,745	2,984
Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,386	1,462	1,787
Europe, the Middle East, and Africa [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,138	1,197	1,315
Latin America [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													669	674	745
Transferred at a Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													5,782	6,078	6,831
Transferred at a Point in Time [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,830	1,851	1,702
Transferred at a Point in Time [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													2,572	2,680	3,380
Transferred at a Point in Time [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,326	1,462	1,633
Transferred at a Point in Time [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													54	85	116
Transferred at a Point in Time [Member] \| North America [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													2,589	2,745	2,984
Transferred at a Point in Time [Member] \| North America [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,029	1,076	996
Transferred at a Point in Time [Member] \| North America [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,026	1,054	1,285
Transferred at a Point in Time [Member] \| North America [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													499	556	632
Transferred at a Point in Time [Member] \| North America [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													35	59	71
Transferred at a Point in Time [Member] \| Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,386	1,462	1,787
Transferred at a Point in Time [Member] \| Asia Pacific [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													200	192	178
Transferred at a Point in Time [Member] \| Asia Pacific [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													657	704	928
Transferred at a Point in Time [Member] \| Asia Pacific [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													518	554	657
Transferred at a Point in Time [Member] \| Asia Pacific [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													11	12	24
Transferred at a Point in Time [Member] \| Europe, the Middle East, and Africa [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1,138	1,197	1,315
Transferred at a Point in Time [Member] \| Europe, the Middle East, and Africa [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													362	369	320
Transferred at a Point in Time [Member] \| Europe, the Middle East, and Africa [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													511	519	695
Transferred at a Point in Time [Member] \| Europe, the Middle East, and Africa [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													258	297	283
Transferred at a Point in Time [Member] \| Europe, the Middle East, and Africa [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													7	12	17
Transferred at a Point in Time [Member] \| Latin America [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													669	674	745
Transferred at a Point in Time [Member] \| Latin America [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													239	214	208
Transferred at a Point in Time [Member] \| Latin America [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													378	403	472
Transferred at a Point in Time [Member] \| Latin America [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													51	55	61
Transferred at a Point in Time [Member] \| Latin America [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													1	2	4
Transferred at a Point in Time [Member] \| Titanium Dioxide and Other Minerals [Member] \| Titanium Technologies [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													2,572	2,680	3,380
Transferred at a Point in Time [Member] \| Opteon Refrigerants [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													810	710	597
Transferred at a Point in Time [Member] \| Freon Refrigerants [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													614	722	750
Transferred at a Point in Time [Member] \| Foam, Propellants, and Other [Member] \| Thermal & Specialized Solutions [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													406	419	355
Transferred at a Point in Time [Member] \| Advanced Materials [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													808	916	1,140
Transferred at a Point in Time [Member] \| Performance Solutions [Member] \| Advanced Performance Materials [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													518	546	493
Transferred at a Point in Time [Member] \| Performance Chemicals and Intermediates [Member] \| Other Segment [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation of Net Sales													$ 54	$ 85	$ 116