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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Organization And Basis Of Presentation [Line Items] |  |  |
Cost of sales | $ 1,539.1 | $ 1,493.2 | $ 1,287.6
Income taxes paid, net | 37.3 | 41.6 | 15.3
Capitalized interest costs | 1.2 | 1.1 | 0.5
Research and development costs | 15.0 | 17.0 | 16.0
Shipping and Handling |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Cost of sales | $ 122.0 | 132.0 | 112.0
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] |  |  |
Income taxes paid, net | $ 15.9 | $ 17.6 | $ 6.6
Valhi Inc | Parent Company |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Parent company ownership interest | 50.00% |  |
Valhi Inc | NL Industries Inc. |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Ownership percentage in company | 83.00% |  |
NL Industries Inc. | Parent Company |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Parent company ownership interest | 31.00% |  |
Contran |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Controlling interest description | Consequently, at December 31, 2022, Ms. Simmons and the Family Trust may be deemed to control Contran, and therefore may be deemed to indirectly control the wholly-owned subsidiary of Contran, Valhi, NL and us. |  |
Contran | Valhi Inc |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |
Ownership percentage of parent company held by related party | 92.00% |  |

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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