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Stock-Based Compensation - Summary of Information Related to Stock Options Outstanding (Details) | 12 Months Ended
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May 31, 2017 $ / shares shares
$ 22.42 – $ 126.54 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 8,588,050
Outstanding Options, Average Remaining Option Life | 7 years 4 months 18 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 74.77
Exercisable Options, Number Exercisable (shares) | shares | 1,795,898
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 37.53
Range of Exercise Prices, Lower Range Limit (dollars per share) | 22.42
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 126.54
$ 22.42 – $ 46.91 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 1,972,643
Outstanding Options, Average Remaining Option Life | 4 years 4 months 12 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 35.38
Exercisable Options, Number Exercisable (shares) | shares | 1,488,169
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 34.04
Range of Exercise Prices, Lower Range Limit (dollars per share) | 22.42
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 46.91
46.92 – 66.27 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 2,204,240
Outstanding Options, Average Remaining Option Life | 6 years 8 months 45 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 58.09
Exercisable Options, Number Exercisable (shares) | shares | 278,065
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 51.63
Range of Exercise Prices, Lower Range Limit (dollars per share) | 46.92
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 66.27
66.28 – 89.78 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 1,604,071
Outstanding Options, Average Remaining Option Life | 8 years 1 month 15 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 85.51
Exercisable Options, Number Exercisable (shares) | shares | 15,324
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 71.17
Range of Exercise Prices, Lower Range Limit (dollars per share) | 66.28
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 89.78
89.79 – 126.54 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 2,807,096
Outstanding Options, Average Remaining Option Life | 9 years 6 months 15 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 116.29
Exercisable Options, Number Exercisable (shares) | shares | 14,340
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 90.68
Range of Exercise Prices, Lower Range Limit (dollars per share) | 89.79
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 126.54

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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