Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Commitments And Contingencies [Line Items]
Product liability reserves	$ 13.7	$ 16.3
Gain on settlement	24.7
Other Income (Expense)
Commitments And Contingencies [Line Items]
Gain on settlement	15.5
Engineering, Selling and Administrative Expenses
Commitments And Contingencies [Line Items]
Gain on settlement	$ 9.2

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration