Restructuring, Impairment, and Plant Closing and Transition Costs - Accrued Restructuring and Plant Closing and Transition Costs (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($) position
Accrued restructuring costs roll forward
Accrued liabilities as of December 31, 2019	$ 16
Restructuring expense	11
Restructuring payments	(17)
Accrued liabilities as of September 30, 2020	10
Current portion of restructuring reserves	4
Long-term portion of restructuring reserve	6
Titanium Dioxide
Accrued restructuring costs roll forward
Accrued liabilities as of December 31, 2019	16
Restructuring expense	10
Restructuring payments	(16)
Accrued liabilities as of September 30, 2020	10
Current portion of restructuring reserves	4
Long-term portion of restructuring reserve	6
Performance Additives
Accrued restructuring costs roll forward
Accrued liabilities as of December 31, 2019	0
Restructuring expense	1
Restructuring payments	(1)
Accrued liabilities as of September 30, 2020	0
Current portion of restructuring reserves	0
Long-term portion of restructuring reserve	0
Workforce reductions
Accrued restructuring costs roll forward
Accrued liabilities as of December 31, 2019	15
Restructuring expense	4
Restructuring payments	(10)
Accrued liabilities as of September 30, 2020	$ 9
Number of positions terminated | position	121
Number of positions terminated requiring future payment | position	0
Other restructuring costs
Accrued restructuring costs roll forward
Accrued liabilities as of December 31, 2019	$ 1
Restructuring expense	7
Restructuring payments	(7)
Accrued liabilities as of September 30, 2020	$ 1