Commitments and Contingencies - Other Litigation and Other Matters - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) Customer	Dec. 31, 2019	Dec. 31, 2018
Chemicals | TiO2 Product
Commitments And Contingent Liabilities [Line Items]
Sale of TiO2, number of customers | Customer	4,000
Chemicals | Customer Concentration Risk | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Component Products Segment | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	48.00%	47.00%	44.00%
Component Products | Customer Concentration Risk | Net Sales | Security Products Reporting Unit
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	17.00%	14.00%	13.00%
Real Estate Management And Development | Customer Concentration Risk | Net Sales | Minimum
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
TiO2 | Chemicals | TiO2 Product | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	93.00%	94.00%	94.00%
TiO2 | Chemicals | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	34.00%	36.00%	33.00%
Feedstock Ore | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 1,200
Other Supply And Service Contracts | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 86