Restructuring, Impairment and Plant Closing and Transition Costs - Narrative (Details) - USD ($) $ in Millions	12 Months Ended			60 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2024
Restructuring, impairment and plant closing costs
Restructuring charges	$ 5
Impairment of assets			$ 3
Accelerated depreciation	22	$ 556	3
Cash charges	25	37	45
Other non-cash charges		10	1
Titanium Dioxide
Restructuring, impairment and plant closing costs
Restructuring charges		465
Accelerated depreciation		417
Employee benefits		39
Cash charges		39
Other non-cash charges		426
Write off of other assets		9
South Africa | Titanium Dioxide
Restructuring, impairment and plant closing costs
Impairment of assets	1	3	4
Calais, France | Titanium Dioxide
Restructuring, impairment and plant closing costs
Restructuring charges	8	15	34
Additional restructuring charges remaining	13
Pori, Finland | Titanium Dioxide | Facility closing
Restructuring, impairment and plant closing costs
Restructuring charges	17
Additional restructuring charges remaining	101
Accelerated depreciation	20
Plant shut down costs	6
Employee benefits	5
Gain related to early settlement of contractual obligations	14
Cash charges	11
Other non-cash charges	6
Pori, Finland | Titanium Dioxide | Facility closing | Forecast
Restructuring, impairment and plant closing costs
Accelerated depreciation				$ 15
Plant shut down costs				82
Employee benefits				2
Cash charges				84
Other non-cash charges				17
Write off of other assets				$ 2
St. Louis And Easton
Restructuring, impairment and plant closing costs
Restructuring charges	0	16	$ 7
Beltsville, Maryland
Restructuring, impairment and plant closing costs
Accelerated depreciation	2	0
Augusta, Georgia
Restructuring, impairment and plant closing costs
Restructuring charges	$ 0	$ 129