Selected Balance Sheet Data Accounts Receivable, Net (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Accounts receivable, net
Accounts receivable	$ 92.4	$ 98.0
Less allowance for bad debts	(5.9)	(5.3)
Accounts receivable, net	$ 86.5	$ 92.7

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant