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v3.20.2

Stock-Based Compensation - Stock Options Granted and Outstanding (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018 | May 31, 2017
Shares |  |  |  |
Outstanding, beginning of period (shares) | 8,208,934 | 8,930,186 | 8,588,050 |
Granted (shares) | 575,813 | 1,013,005 | 1,664,867 |
Canceled (shares) | (5,432) | (3,045) | (7,809) |
Forfeited (shares) | (312,391) | (397,304) | (255,627) |
Exercised (shares) | (1,361,525) | (1,333,908) | (1,059,295) |
Outstanding, end of period (shares) | 7,105,399 | 8,208,934 | 8,930,186 |
Weighted Average Exercise Price |  |  |  |
Outstanding, beginning of period, Weighted Average Exercise Price (dollars per share) | $ 123.80 | $ 96.71 | $ 74.77 |
Granted, Weighted Average Exercise Price (dollars per share) | 250.50 | 219.37 | 175.86 |
Canceled, Weighted Average Exercise Price (dollars per share) | 72.17 | 58.03 | 45.10 |
Forfeited, Weighed Average Exercise Price (dollars per share) | 185.08 | 155.39 | 94.73 |
Exercised, Weighted Average Exercise Price (dollars per share) | 70.03 | 54.14 | 44.06 |
Outstanding, end of period, Weighted Average Exercise Price (dollars per share) | $ 145.54 | $ 123.80 | $ 96.71 |
Options exercisable (shares) | 1,913,374 | 1,919,976 | 2,006,922 | 1,795,898

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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