The value (monetary amount) of the award the plaintiff seeks in the legal matter.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

Reference 3: 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_LossContingencyDamagesSoughtValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Legal Proceedings (Details) R$ in Millions, $ in Millions	Mar. 22, 2018 USD ($)	Feb. 25, 2015 USD ($)	Feb. 25, 2015 BRL (R$)	Jan. 13, 2015 USD ($)	Jan. 13, 2015 BRL (R$)
Loss Contingency [Abstract]
Assessments sought again entity \| R$			R$ 33.3		R$ 14.4
Brazilian Federal Tax Authorities
Loss Contingency [Abstract]
Assessments sought again entity	$ 5.3
Reduction in principal, penalties and interest (percent)	38.00%
Pending Litigation \| Brazilian Federal Tax Authorities
Loss Contingency [Abstract]
Assessments sought again entity		$ 8.6		$ 3.7