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Other Current Assets (Detail) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Prepaid expenses | $ 92.3 | $ 84.1
Other investments | 44.0 | 30.7
Income taxes receivable | 22.5 | 19.0
Other receivables | 19.1 | 15.2
Marketable securities (Note 2) | 3.0 | 2.9
Contract assets | 1.9 | 1.4
Deferred financing fees (Note 8) | 0.5 | 0.5
Other | 11.3 | 16.4
Total other current assets | $ 194.6 | $ 170.2

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