Revenue from Contracts with Customers (Details 2) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Contract with Customer, Contract Liability [Roll Forward]
Beginning balance	$ 16.7	$ 14.5
Additions to sales incentive accrual	6.5	6.0
Contract payments	(12.6)	(11.6)
Foreign currency fluctuations	0.0	0.1
Ending balance	$ 10.6	$ 9.0

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 55
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=108792157&loc=SL49130611-203046-203046

Name:	us-gaap_ContractWithCustomerRefundLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant