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Related Party Transactions - Additional Information (Detail) - USD ($)
12 Months Ended 24 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2019
Insurance Premiums          
Related Party Transaction [Line Items]          
Expense transaction with affiliate $ 20,800,000 $ 23,200,000 $ 19,100,000    
Contran Corporation [Member]          
Related Party Transaction [Line Items]          
Expense transaction with affiliate 300,000 300,000 300,000    
Sublease rent expense 500,000 400,000 400,000    
Contran Corporation [Member] | Intercorporate Services Agreement          
Related Party Transaction [Line Items]          
Intercorporate services fees 24,500,000 24,000,000.0 23,300,000    
Louisiana Pigment Company, L.P. | Titanium Dioxide Pigments          
Related Party Transaction [Line Items]          
Purchase of TiO2 225,600,000 188,600,000 167,800,000    
Louisiana Pigment Company, L.P. | Titanium Dioxide Feedstock          
Related Party Transaction [Line Items]          
Sales of feedstock ore to LPC 106,900,000 85,400,000 $ 84,200,000    
Valhi Inc [Member] | Unsecured Revolving Demand Promissory Note          
Related Party Transaction [Line Items]          
Outstanding loans under promissory note $ 0 0   $ 0  
Maximum lending capacity         $ 25,000,000
Percentage of Interest over Prime rate     1.00%    
Interest payable quarterly for the loan prime plus 1.00%        
Valhi Inc [Member] | Unsecured Revolving Demand Promissory Note | Interest Income          
Related Party Transaction [Line Items]          
Interest income on loan     $ 300,000 $ 200,000  
Tall Pines Insurance Company | Insurance Premiums          
Related Party Transaction [Line Items]          
Expense transaction with affiliate $ 17,300,000 $ 18,600,000 $ 14,800,000