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Long-Term Debt - Senior Notes - Additional Information (Detail)
€ in Millions, $ in Millions
12 Months Ended
Sep. 13, 2017
EUR (€)
Sep. 13, 2017
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Sep. 13, 2017
USD ($)
Senior Notes          
Debt Instrument [Line Items]          
Minimum amount of debt default for using customary default provisions   $ 50.0      
Unamortized debt issuance costs     $ 3.5 $ 4.7  
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025          
Debt Instrument [Line Items]          
Debt instrument principal amount € 400       $ 477.6
Debt instrument interest rate 3.75%       3.75%
Debt instrument maturity date   Sep. 15, 2025      
Debt instrument, interest payment terms     bear interest at 3.75% per annum, payable semi-annually on March 15 and September 15 of each year, payments began on March 15, 2018;    
Debt instrument, frequency of periodic payment of interest     semi-annually    
Debt instrument, date of first semi-annual interest payment --03-15        
Debt instrument, date of second semi-annual interest payment --09-15        
Debt Instrument, date of first required semi-annual payment Mar. 15, 2018        
Debt instrument, redemption, description     have a maturity date of September 15, 2025. We may redeem the Senior Notes at redemption prices ranging from 102.813% of the principal amount, declining to 100% on or after September 15, 2023. If we experience certain specified change of control events, we would be required to make an offer to purchase the Senior Notes at 101% of the principal amount. We would also be required to make an offer to purchase a specified portion of the Senior Notes at par value in the event that we generate a certain amount of net proceeds from the sale of assets outside the ordinary course of business, and such net proceeds are not otherwise used for specified purposes within a specified time period;    
Debt instrument redemption price percent if experience certain specified change of control events   101.00%      
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Collateral Pledged | Direct Domestic Subsidiary of KII and Guarantors          
Debt Instrument [Line Items]          
Parent company ownership interest 100.00%       100.00%
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Collateral Pledged | Non US Subsidiary Directly Owned by KII or any Guarantor          
Debt Instrument [Line Items]          
Parent company ownership interest 65.00%       65.00%
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | Collateral Pledged | Non US Subsidiary Directly Owned by KII or any Guarantor | Non-voting Common Stock          
Debt Instrument [Line Items]          
Parent company ownership interest 100.00%       100.00%
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or After September 15, 2020          
Debt Instrument [Line Items]          
Debt instrument, redemption price percentage   102.813%      
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 | On or After September 15, 2023          
Debt Instrument [Line Items]          
Debt instrument, redemption price percentage   100.00%