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Common Stock and Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions | 12 Months Ended
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May 31, 2021 USD ($) $ / shares shares | May 31, 2020 USD ($) $ / shares shares | May 31, 2019 USD ($) $ / shares shares
Class A Convertible Common Stock |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Common stock, no par value (in dollars per share) | $ / shares | $ 0 |  |
Common stock, number of shares authorized (in shares) | 400,000,000 |  |
Common stock, Class A conversion ratio to Class B (in shares) | 1 |  |
Class B Common Stock |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Common stock, no par value (in dollars per share) | $ / shares | $ 0 |  |
Common stock, number of shares authorized (in shares) | 2,400,000,000 |  |
Class B Common Stock | ESPPs |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Employee stock purchase plans, payroll deductions | 10.00% |  |
Employee stock purchase plan offering period | 6 months |  |
Shares purchased, price as percentage of lower of the fair market value | 85.00% |  |
Purchase of shares by employee (in shares) | 2,500,000 | 2,700,000 | 2,500,000
Stock Incentive Plan |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Stock options vesting period (in years) | 4 years |  |
Stock options expiration from the date of grant (in years) | 10 years |  |
Options exercisable (in shares) | 44,200,000 |  |
Options exercisable (in dollars per share) | $ / shares | $ 57.43 |  |
Stock Incentive Plan | Stock options |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Unrecognized compensation costs from stock options, net of estimated forfeitures | $ | $ 415.0 |  |
Unrecognized compensation costs from stock options, net of estimated forfeitures, to be recognized as operating overhead expense over a weighted average period (in years) | 2 years 6 months |  |
Stock Incentive Plan | Class B Common Stock |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Shares available for grant (in shares) | 798,000,000 |  |
Minimum term of market traded options for estimates of expected volatility (in years) | 1 year |  |
Aggregate intrinsic value for options outstanding | $ | $ 4,976.0 |  |
Aggregate intrinsic value for options exercisable | $ | 3,494.0 |  |
Total intrinsic value of options exercised | $ | $ 1,571.0 | $ 1,161.0 | $ 938.0
Weighted average remaining contractual life for options outstanding (in years) | 5 years 10 months 24 days |  |
Weighted average remaining contractual life for options exercisable (in years) | 4 years 2 months 12 days |  |
Stock Incentive Plan | Class B Common Stock | Stock options |  |  |
Common Stock and Share Based Compensation [Line Items] |  |  |
Weighted average fair value per share of the options granted (in dollars per share) | $ / shares | $ 26.75 | $ 18.71 | $ 22.78

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- Definition Face amount per share of no-par value common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable 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)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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