Related Party Transactions - Additional Information (Detail) - USD ($)
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1 Months Ended |
12 Months Ended |
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Feb. 28, 2013 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Nov. 30, 2010 |
| Contran |
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| Related Party Transaction [Line Items] |
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| Expense transaction with affiliate |
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$ 144,000
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$ 116,000
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$ 88,000
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| Contran | Intercorporate Services Agreement |
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| Related Party Transaction [Line Items] |
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| Intercorporate services fees |
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13,400,000
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12,300,000
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12,900,000
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| Contran | Scenario, Forecast | Intercorporate Services Agreement |
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| Related Party Transaction [Line Items] |
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| Intercorporate services fees |
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$ 15,200,000
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| LPC | Titanium Dioxide Pigments |
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| Related Party Transaction [Line Items] |
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| Purchase of TiO2 |
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176,500,000
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193,100,000
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224,500,000
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| LPC | Titanium Dioxide Feedstock |
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| Related Party Transaction [Line Items] |
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| Sales of feedstock ore to LPC |
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80,600,000
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98,400,000
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141,100,000
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| Tall Pines Insurance Inc and EWIRE Inc | Insurance Premiums |
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| Related Party Transaction [Line Items] |
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| Expense transaction with affiliate |
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10,300,000
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10,700,000
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11,300,000
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| Unsecured Revolving Demand Promissory Note | Valhi Inc |
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| Related Party Transaction [Line Items] |
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| Amended unsecured revolving credit loan |
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$ 0
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0
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| Maximum lending capacity |
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$ 100,000,000
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| Percentage of Interest over Prime rate |
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1.00%
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| Interest payable quarterly for the loan |
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prime plus 1.00%
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| Unsecured Revolving Demand Promissory Note | Valhi Inc | Interest Income |
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| Related Party Transaction [Line Items] |
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| Interest income on loan |
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$ 500,000
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500,000
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500,000
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| Promissory note | Contran |
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| Related Party Transaction [Line Items] |
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| Borrowed Funds |
$ 190,000,000
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190,000,000
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| Repayments of Lines of Credit |
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20,000,000
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| Interest expense on loan |
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$ 1,600,000
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$ 11,700,000
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