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Stock-Based Compensation (Tables) | 6 Months Ended
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May 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Outstanding and Exercisable Stock Options | The following table summarizes stock option transactions for the six months ended May 31, 2018:
| Options |  | Weighted Average Exercise Price
Options outstanding at beginning of period | 9,265,240 |  |  | $ | 17.64 |
Granted | — |  |  | — |
Exercised | (397,062 | ) |  | 12.02 |
Cancelled | (16,208 | ) |  | 15.47 |
Options outstanding at end of period | 8,851,970 |  |  | $ | 17.90 |
Options exercisable at end of period | 7,910,570 |  |  | $ | 18.16 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -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 (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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