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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, 2018 $ / shares shares
$ 22.42 – $ 182.25 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 8,930,186
Outstanding Options, Average Remaining Option Life | 7 years 3 months 21 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 100.73
Exercisable Options, Number Exercisable (shares) | shares | 2,006,922
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 43.94
Range of Exercise Prices, Lower Range Limit (dollars per share) | 22.42
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 182.25
$ 22.42 – $ 59.50 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 1,901,639
Outstanding Options, Average Remaining Option Life | 3 years 12 months 10 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 39.27
Exercisable Options, Number Exercisable (shares) | shares | 1,615,907
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 37.74
Range of Exercise Prices, Lower Range Limit (dollars per share) | 22.42
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 59.50
59.51 – 89.78 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 2,671,836
Outstanding Options, Average Remaining Option Life | 6 years 8 months 7 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 76.01
Exercisable Options, Number Exercisable (shares) | shares | 348,008
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 65.55
Range of Exercise Prices, Lower Range Limit (dollars per share) | 59.51
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 89.78
89.79 – 109.33 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 1,346,379
Outstanding Options, Average Remaining Option Life | 8 years 1 month 17 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 107.33
Exercisable Options, Number Exercisable (shares) | shares | 42,346
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 101.57
Range of Exercise Prices, Lower Range Limit (dollars per share) | 89.79
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 109.33
109.34 – 182.25 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number Outstanding (shares) | shares | 3,010,332
Outstanding Options, Average Remaining Option Life | 9 years 6 months 17 days
Outstanding Options, Weighted Average Exercise Price (dollars per share) | $ 158.55
Exercisable Options, Number Exercisable (shares) | shares | 661
Exercisable Options, Weighted Average Exercise Price (dollars per share) | $ 137.30
Range of Exercise Prices, Lower Range Limit (dollars per share) | 109.34
Range of Exercise Prices, Upper Range Limit (dollars per share) | $ 182.25

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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