Commitments and Contingencies - Schedule of Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Changes in accrued product warranty cost
Balance at the beginning of the period	$ 6.5	$ 6.9	$ 4.8
Warranty expense	(0.1)	0.6	2.4
Deductions and other	0.2	(1.0)	(0.3)
Balance at the end of the period	$ 6.6	$ 6.5	$ 6.9

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1),(c)(5)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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