Restructuring - Restructuring Expenses Included in Consolidated Statements of Operations (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Restructuring and Related Cost [Abstract]
Restructuring Charges	$ 5.5

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration