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VAT Tax Issue in Brazil (Details 1) In Millions, unless otherwise specified | 3 Months Ended
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Apr. 30, 2013 USD ($) | Apr. 30, 2013 BRL | Apr. 30, 2013 Claim 2004-2006 Not Paid Under Amnesty Program [Member] USD ($) | Apr. 30, 2013 Claim 2004-2006 Not Paid Under Amnesty Program [Member] BRL | Apr. 30, 2013 Claim 2007-2009 By State Of Bahia [Member] USD ($) | Apr. 30, 2013 Claim 2007-2009 By State Of Bahia [Member] BRL
Taxes |  | 7.5 |  | 1.3 |  |  | 6.2 | [1]
Fines and penalties |  | 8.0 |  | 1.9 |  |  | 6.1 | [1]
Maximum judicial deposit | $ 7.8 | 15.5 | $ 1.6 | 3.2 | $ 6.2 | [1] | 12.3 | [1]
[1] | Our attorney informs us that based on the slow progress so far in the administrative proceedings for the 2007-2009 claim, they believe it is now more likely than not that the next amnesty will arrive prior to the need to pay the R$12.3 judicial deposit.

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- Definition The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 06-3 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6408196&loc=d3e61097-111654 + Details
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