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Stockholders' equity - Additional Information (Detail) - Kronos Worldwide, Inc. $ in Millions | 9 Months Ended
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Sep. 30, 2023 USD ($) shares
Schedule Of Stockholders Equity [Line Items] |
Shares acquired | 313,814
Shares acquired, value | $ | $ 2.8
Shares available for purchase | 1,000,000.0

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- Definition Number of shares remaining authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References No definition available. + Details
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