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Financial Income, Net (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Amortization of marketable securities premium and accretion of discount, net | $ 2.0 | $ 13.6 | $ 20.0
Realized loss (gain) on sale of marketable securities, net | (0.7) | 1.8 | 0.2
Financial income, net | 80.6 | 65.1 | 47.0
Financial Income |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Interest income | 93.3 | 88.5 | 74.9
Financial Expense |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Amortization of marketable securities premium and accretion of discount, net | 2.0 | 13.6 | 20.0
Realized loss (gain) on sale of marketable securities, net | (0.5) | 1.8 | 0.2
Foreign currency re-measurement loss | 8.9 | 5.7 | 5.6
Others | 2.3 | 2.3 | 2.1
Total financial expense | $ 12.7 | $ 23.4 | $ 27.9

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