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Long-Term Debt - Kronos Senior Secured Notes - Additional Information (Detail) - Kronos Worldwide, Inc. - 3.75% Senior Secured Notes due September 15, 2025 - Kronos International, Inc € in Millions, $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 EUR (€) | Jun. 30, 2022 USD ($)
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 3.75% | 3.75%
Debt instrument maturity date | Sep. 15, 2025 |
Debt instrument principal amount | € | € 400 |
Unamortized debt issuance costs | $ |  | $ 2.8

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