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Accounts and Other Receivables, Net - Components of Accounts and Other Receivables (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Trade accounts receivable: |  |
VAT and other receivables | $ 38.0 | $ 27.2
Allowance for doubtful accounts | (2.0) | (1.9)
Total | 380.7 | 332.1
Trade Accounts Receivable | Kronos Worldwide, Inc. |  |
Trade accounts receivable: |  |
Accounts receivable | 326.3 | 294.8
Trade Accounts Receivable | CompX |  |
Trade accounts receivable: |  |
Accounts receivable | 15.6 | 10.8
Trade Accounts Receivable | BMI and LandWell |  |
Trade accounts receivable: |  |
Accounts receivable | $ 2.8 | $ 1.2

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