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Accounts and Other Receivables, Net - Accounts and Other Receivables, Net (Detail) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Allowance for doubtful accounts | $ (1.7) | $ (1.1)
Total | 314.5 | 309.4
Trade receivables |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Accounts and other receivables | 295.8 | 270.5
Recoverable VAT and other receivables |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Accounts and other receivables | 15.6 | 25.4
Other |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Receivables from affiliates | 2.5 | 2.2
Refundable income taxes |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Refundable income taxes | $ 2.3 | 7.7
Louisiana Pigment Company, L.P. ("LPC'') |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Receivables from affiliates |  | $ 4.7

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