Represents the number of anniversaries of grant date on which share-based compensation awards vest.

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Period Type:	instant

- Definition

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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Stock-Based Compensation - 2006 Plan (Details)	12 Months Ended
Stock-Based Compensation - 2006 Plan (Details)	Jul. 31, 2017 Installment shares	Jul. 31, 2016 shares	Jul. 31, 2015 shares	Jul. 31, 2014 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding unvested restricted stock shares	222,298,000	331,367,000	343,519,000	525,842,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options (in shares)	122,500	122,500	107,500
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance	5,591,000
2006 Plan \| Stock options and stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance	2,700,000
2006 Plan \| Restricted stock and other stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance	2,891,000
2006 Plan \| Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of anniversaries of grant date on which awards vest \| Installment	3
Outstanding unvested restricted stock shares	108,372
2006 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options (in shares)	122,500
First anniversary vesting \| 2006 Plan \| Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	1 year
First anniversary vesting \| 2006 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	1 year
Second anniversary vesting \| 2006 Plan \| Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	2 years
Second anniversary vesting \| 2006 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	2 years
Third anniversary vesting \| 2006 Plan \| Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	3 years
Third anniversary vesting \| 2006 Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting period	3 years