Selected Balance Sheet Data (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts receivable, net
Accounts receivable	$ 315.1	$ 330.8
Less allowance for bad debts	(20.9)	(20.5)
Accounts receivable, net	$ 294.2	$ 310.3

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