Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - ARGENTINA - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Sales Revenue, Net \| Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk percentage	5.00%	5.00%
Subsidiaries
Concentration Risk [Line Items]
Net assets	$ 23.3

Amount of net assets (liabilities).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 30
-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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