Commitments and Contingencies - Other Litigation and Other Matters - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Commitments And Contingent Liabilities [Line Items]
Rent expense	$ 14.8	$ 16.3	$ 14.3
Chemicals | Minimum | Various Supply and Services Agreements
Commitments And Contingent Liabilities [Line Items]
Long term master agreements expiring	2019
Chemicals | Maximum | Various Supply and Services Agreements
Commitments And Contingent Liabilities [Line Items]
Long term master agreements expiring	2022
Chemicals | TiO2 Product
Commitments And Contingent Liabilities [Line Items]
Sale of TiO2, number of customers | Customer	4,000
Chemicals | Customer Concentration Risk | Behr Process Corporation | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage			10.00%
Component Products Segment | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	44.00%	44.00%	46.00%
Component Products | Customer Concentration Risk | United States Postal Service | Net Sales | Security​ Products​ Reporting​ Unit
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	13.00%	16.00%	14.00%
Component Products | Customer Concentration Risk | Harley Davidson Inc | Net Sales | Security​ Products​ Reporting​ Unit
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage			11.00%
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%
Real Estate Management And Development | Customer Concentration Risk | Toll Henderson LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	17.00%
Real Estate Management And Development | Customer Concentration Risk | Richmond Homes of Nevada | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	29.00%	37.00%	15.00%
Real Estate Management And Development | Customer Concentration Risk | Woodside Homes of Nevada LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	20.00%
Real Estate Management And Development | Customer Concentration Risk | Greystone Nevada LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage		22.00%	34.00%
Real Estate Management And Development | Customer Concentration Risk | City Of Henderson | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage		11.00%
Real Estate Management And Development | Customer Concentration Risk | Henderson Interchange Centers LLC | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage			12.00%
TiO2 | Chemicals | TiO2 Product | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	94.00%	94.00%	93.00%
TiO2 | Chemicals | Customer Concentration Risk | Top Ten Customers | Net Sales
Commitments And Contingent Liabilities [Line Items]
Concentration risk percentage	33.00%	34.00%	33.00%
Feedstock Ore | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 594.0
Other Supply And Service Contracts | Chemicals
Commitments And Contingent Liabilities [Line Items]
Minimum purchase commitments	$ 156.0