Investment in Kronos Worldwide, Inc. - Additional Information (Detail) - Kronos - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Schedule Of Equity Method Investments [Line Items]
Number of shares owned	35.2	35.2
Aggregate market value	$ 415.6	$ 350.1
Quoted market price per share	$ 11.80	$ 9.94