Other Balance Sheet Information - Other Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Other Current Assets:
Non-trade receivables	$ 16.7	$ 22.1
Prepaid expenses and other current assets	13.5	13.4
Income taxes receivable	15.2	8.2
Total other current assets	$ 45.4	$ 43.7

Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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