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Accounts and Other Receivables, Net - Components of Accounts and Other Receivables (Detail) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Trade accounts receivable: |  |
VAT and other receivables | $ 26.7 | $ 27.2
Refundable income taxes | 7.8 | 5.7
Allowance for doubtful accounts | (2.1) | (1.9)
Total | 412.4 | 342.3
Trade Accounts Receivable | Kronos Worldwide, Inc. |  |
Trade accounts receivable: |  |
Accounts receivable | 346.6 | 294.8
Trade Accounts Receivable | CompX |  |
Trade accounts receivable: |  |
Accounts receivable | 15.2 | 10.8
Trade Accounts Receivable | BMI and LandWell |  |
Trade accounts receivable: |  |
Accounts receivable | 2.1 | 1.2
Contran | Trade Items |  |
Trade accounts receivable: |  |
Receivable from affiliates | 0.4 | 1.7
Louisiana Pigment Company, L.P. ("LPC") |  |
Trade accounts receivable: |  |
Receivable from affiliates | 13.4 |
Other | Trade Items |  |
Trade accounts receivable: |  |
Receivable from affiliates | $ 2.3 | $ 2.8

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