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Schedule of Changes in Unrecognized Tax Benefit (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Jul. 31, 2014 | Jul. 31, 2013 | Jul. 31, 2012
Schedule of Unrecognized Tax Benefits [Line Items] |  |  |
Beginning balance | $ 32,733 | $ 33,900 | $ 32,174
Tax positions related to prior years: Additions | 9 | 436 | 562
Tax positions related to prior years: Reductions | (9,281) | (113) | (284)
Tax positions related to current year: Additions | 3,804 | 5,348 | 3,995
Settlements | (5,002) | (5,593) | (1,364)
Lapses in statute of limitations | (1,450) | (1,245) | (1,183)
Ending balance | $ 20,813 | $ 32,733 | $ 33,900

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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 decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period 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 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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