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Components of Total Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Jul. 31, 2014 | Jul. 31, 2013 | Jul. 31, 2012 | Jul. 31, 2011
Schedule of Unrecognized Tax Benefits [Line Items] |  |  |  |
Unrecognized tax benefits | $ 20,813 | $ 32,733 | $ 33,900 | $ 32,174
Reduction to unrecognized tax benefits for tax credit carry forward | (657) | (440) |  |
Accrued interest and penalties | 5,200 | 11,671 | 13,265 |
Total unrecognized tax benefits | 25,356 | 43,964 | 47,165 |
Short-term, included in "Income and other taxes" | 1,667 | 2,745 | 2,649 |
Long-term unrecognized tax benefits | 23,689 | 41,219 | 44,516 |
Total unrecognized tax benefits | $ 25,356 | $ 43,964 | $ 47,165 |

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- Definition Gross Amount Of Unrecognized Tax Benefits Excluding Interest and Penalties Pertaining to Uncertain Tax Positions + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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