Investment in Kronos Worldwide, Inc. - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
	Jul. 16, 2024	Sep. 30, 2024	Mar. 31, 2025	Dec. 31, 2024
Kronos | Lousiana Pigment Company
Schedule Of Equity Method Investments [Line Items]
Percentage of voting interests acquired	50.00%
Equity interest in acquiree percentage	50.00%
Payments to acquire businesses gross	$ 185.0
Business combination contingent consideration liability	$ 15.0
Business combination contingent consideration earn-out period	2 years
Proceeds from lines of credit	$ 132.1
Estimated fair value of the earn-out	4.2
Non-cash gain before tax associated with remeasurement		$ 64.5
Estimated fair value of existing ownership		178.2
Aggregate carrying value		$ 113.7
Kronos | Lousiana Pigment Company | Aggregate EBITDA is 650 Million
Schedule Of Equity Method Investments [Line Items]
Business combination contingent consideration liability	5.0
Expected aggregate EBITDA achieved for earn out period	650.0
Kronos | Lousiana Pigment Company | Aggregate EBITDA is 730 Million
Schedule Of Equity Method Investments [Line Items]
Business combination contingent consideration liability	15.0
Expected aggregate EBITDA achieved for earn out period	730.0
Kronos | Lousiana Pigment Company | Aggregate EBITDA is between 650 Million and 730 Million
Schedule Of Equity Method Investments [Line Items]
Business combination contingent consideration liability	10.0
Kronos | Lousiana Pigment Company | Maximum | Aggregate EBITDA is between 650 Million and 730 Million
Schedule Of Equity Method Investments [Line Items]
Expected aggregate EBITDA achieved for earn out period	730.0
Kronos | Lousiana Pigment Company | Minimum | Aggregate EBITDA is between 650 Million and 730 Million
Schedule Of Equity Method Investments [Line Items]
Expected aggregate EBITDA achieved for earn out period	$ 650.0
Kronos
Schedule Of Equity Method Investments [Line Items]
Number of shares owned			35.2	35.2
Quoted market price per share			$ 7.48	$ 9.75
Aggregate market value			$ 263.4	$ 343.4