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Earnings per Share - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands | 12 Months Ended | 21 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018 | Jul. 29, 2020 | Oct. 29, 2019 | Oct. 30, 2018 | Aug. 02, 2016
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Basic earnings per share, discontinued operations (dollars per share) | $ 0.00 | $ 0.02 | $ 0.54 |  |  |  |
Diluted earnings per share, discontinued operations (dollars per share) | $ 0.00 | $ 0.02 | $ 0.53 |  |  |  |
Options granted excluded from the computation of diluted earnings per share (shares) | 200 | 500 | 800 |  |  |  |
Total purchase price of shares repurchased | $ 464,518,000 | $ 1,016,300,000 | $ 127,319,000 |  |  |  |
Employee Payroll Taxes Due on Restricted Stock Awards |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (in shares) | 300 | 300 | 300 |  |  |  |
Avg. Price per Share (in dollars per share) | $ 260.89 | $ 204.50 | $ 130.30 |  |  |  |
Total purchase price of shares repurchased | $ 68,800,000 | $ 62,900,000 | $ 37,300,000 |  |  |  |
Buyback Program, August 2016 |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Share buyback program, authorized amount |  |  |  |  |  |  | $ 500,000,000.0
Stock purchased under share buyback (in shares) | 0 | 2,130 | 518 |  |  |  |
Avg. Price per Share (in dollars per share) | $ 0 | $ 192.55 | $ 173.51 |  |  |  |
Total purchase price of shares repurchased | $ 0 | $ 410,003,000 | $ 89,997,000 |  |  |  |
Buyback Program, October 2018 |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Share buyback program, authorized amount |  |  |  |  |  | $ 1,000,000,000.0 |
Stock purchased under share buyback (in shares) | 1,607 | 2,673 | 0 |  |  |  |
Avg. Price per Share (in dollars per share) | $ 246.19 | $ 203.30 | $ 0 |  |  |  |
Total purchase price of shares repurchased | $ 395,681,000 | $ 543,442,000 | $ 0 |  |  |  |
Buyback Program, October 2019 |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Share buyback program, authorized amount |  |  |  |  | $ 1,000,000,000.0 |  |
Stock purchased under share buyback (in shares) | 0 | 0 | 0 |  |  |  |
Avg. Price per Share (in dollars per share) | $ 0 | $ 0 | $ 0 |  |  |  |
Total purchase price of shares repurchased | $ 0 | $ 0 | $ 0 |  |  |  |
Subsequent Event |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (in shares) |  |  |  | 4,300 |  |  |
Avg. Price per Share (in dollars per share) |  |  |  | $ 219.42 |  |  |
Total purchase price of shares repurchased |  |  |  | $ 939,100,000 |  |  |

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