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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Organization And Basis Of Presentation [Line Items]
Capitalized interest costs	$ 0.9	$ 1.1	$ 2.9
Income taxes paid, net	6.6	1.4	17.5
Earnings of non-U.S. subsidiaries subject to permanent reinvestment plans aggregated	660.0
Shipping and handling costs	90.0	87.0	95.0
Research, development and certain sales technical support costs	$ 13.0	16.0	19.0
Louisiana Pigment Company, L.P.
Organization And Basis Of Presentation [Line Items]
Owned manufacturing joint venture	50.00%
Valhi Inc
Organization And Basis Of Presentation [Line Items]
Ownership percentage in subsidiary	50.00%
Ownership percentage in company	83.00%
Income taxes paid, net	$ 0.8		$ 8.2
Income tax refunds, net		$ 3.5
NL Industries Inc.
Organization And Basis Of Presentation [Line Items]
Ownership percentage	30.00%
Contran
Organization And Basis Of Presentation [Line Items]
Ownership percentage of parent company held by related party	93.00%
Controlling interest description	Consequently, Ms. Simmons and Ms. Connelly may be deemed to control Contran, Valhi, NL and us.

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