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Shareholders' Equity (Details) - USD ($) |  |  |  | 2 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 16, 2015 | Apr. 14, 2015 | Apr. 10, 2015 | Jun. 16, 2015 | Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2015 | Nov. 30, 2014
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Accelerated share repurchase program, up-front payment |  |  | $ 100,000,000 |  |  |  |  |
Repurchase of common stock (in shares) | 324,742 | 1,630,988 |  | 1,955,730 |  | 1,313,848 |  | 4,879,012
Accelerated share repurchases (in dollars per share) |  |  |  | $ 51.13 |  |  |  |
Repurchase of common stock |  |  |  |  |  |  | $ 75,369,000 | $ 171,933,000
Repurchase of common stock (in dollars per share) |  |  |  |  | $ 59.87 | $ 36.11 | $ 57.07 | $ 35.23
Remaining authorized repurchase amount |  |  |  |  | $ 327,500,000 |  | $ 327,500,000 |
Other than accelerated share repurchase program |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Repurchase of common stock (in shares) |  |  |  |  | 625,573 |  | 1,320,563 |
Repurchase of common stock |  |  |  |  | $ 37,500,000 | $ 47,400,000 | $ 75,400,000 | $ 171,900,000

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- Definition Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 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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