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Financial instruments - Additional Information (Detail) - Kronos Worldwide, Inc. - 3.75% Senior Secured Notes due September 15, 2025 - Kronos International, Inc - EUR (€) | Dec. 31, 2023 | Sep. 13, 2017
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Financial Instrument At Fair Value [Line Items] |  |
Estimated market price of the notes | € 959 |
Principal amount of debt instrument | € 1,000 |
Interest rate | 3.75% | 3.75%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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