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Common Stock Repurchases (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Sep. 22, 2011
Stock Repurchase [Abstract] |  |  |
Additional common stock authorized for repurchase (in shares) |  |  | 40,000,000
Common stock authorized for repurchase (in shares) |  |  | 98,000,000
Repurchased common stock (in shares) |  | 500,000 |
Stock repurchase price per share (in dollars per share) |  | $ 27.77 |
Value of repurchased common stock |  | $ 13.9 |
Number of shares repurchased under the program | 50,286,782 |  |
Number of shares available for repurchase under Stock Repurchase Program | 47,713,218 |  |
Dilutive earnings per share, Impact of repurchase shares on the weighted average common shares outstanding (in dollars per share) | $ 0.01 |  |
Remittance to taxing authorities under statutory withholding in fiscal year 2014 and 2013 | $ 0.08 | $ 0.60 |

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- Definition The total number of shares repurchased under the program as if the balance sheet date. + References No definition available. + Details
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- Definition The dilutive earnings per share impact of all repurchased shares on the weighted average number of common shares outstanding during the period. + References No definition available. + Details
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- Details
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- Definition Represents the price per share paid to acquire company's common stock under stock repurchase program. + References No definition available. + Details
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- Definition The number additional shares approved under company's stock repurchase program by the entity's board of directors. + References No definition available. + Details
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- Definition The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References No definition available. + Details
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- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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