Contingencies Contingencies (Details) - 3 months ended Mar. 31, 2020 R$ in Millions, $ in Millions	USD ($)	BRL (R$)
Gain Contingency, Unrecorded Amount	the current estimate of the refund calculated on a gross basis is approximately 100 million Brazilian reais, or approximately $19 million as of March 31, 2020.
Former Gain Contingency, Recognized in Current Period	$ 1.5	R$ 8.0

Describes an existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible gain to the entity that will ultimately be realized when one or more future events occur.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355

Name:	us-gaap_GainContingencyDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration