Subsequent Event (Details) (Brazil, Digital Page) In Millions, unless otherwise specified	Aug. 31, 2014	Oct. 24, 2013 USD ($)	Oct. 24, 2013 BRL	Nov. 18, 2014 Subsequent event USD ($)
Subsequent event
Ownership interest (as a percent)	60.00%	40.00%	40.00%	60.00%
Amount invested		$ 9.0	20.0	$ 8.5

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 12

-Article 5

Name:	us-gaap_EquityMethodInvestmentAggregateCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant