Commitment and Contingencies - Rollforward (Details) - USD ($) $ in Millions	2 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2018
Movement in Standard Product Warranty Accrual
Beginning balance standard product warrantyaccrual		$ 16.7
Reserve usage		(5.4)
Ending balance standard product warranty accrual	$ 13.8	13.8
Commitment and Contingencies
Movement in Standard Product Warranty Accrual
Beginning balance standard product warrantyaccrual	3.8
Reserve usage	(1.9)
Ending balance standard product warranty accrual	$ 1.9	$ 1.9

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

+ Details

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- Definition

Amount of decrease in the standard product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard product warranty. Excludes extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph ((c)(2))
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

+ Details

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