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Supplemental Balance Sheet Information - Accounts Receivable (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Accounts receivable | $ 162.8 | $ 166.8
Accounts receivable, net | 159.6 | 163.8
Income taxes receivable, current | 28.9 | 14.3
Doubtful accounts |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Allowances and doubtful accounts | (2.9) | (2.7)
Sales discounts |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Allowances and doubtful accounts | $ (0.3) | $ (0.3)

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