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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions | 3 Months Ended | 11 Months Ended |
--- | --- | --- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Oct. 08, 2019 | Oct. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Basic earnings from discontinued operations (in dollars per share) | $ 0.00 | $ 0.00 |  |
Diluted earnings from discontinued operations (in dollars per share) | $ 0.00 | $ 0.00 |  |
Options granted and excluded from the computation of diluted earnings per share (in shares) | 0.2 | 0.3 |  |
Stock purchased under share buyback | $ 256,830,000 | $ 139,468,000 |  |
Employee Payroll Taxes Due on Restricted Stock |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Stock purchased under share buyback (shares) | 0.2 |  |  |
Stock purchased under share buyback, average price per share (in dollars per share) | $ 260.83 |  |  |
Stock purchased under share buyback | $ 63,700,000 |  |  |
October 30, 2018 |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Share buyback program, authorized amount |  |  |  | $ 1,000,000,000.0
Stock purchased under share buyback (shares) | 0.8 |  |  |
Stock purchased under share buyback, average price per share (in dollars per share) | $ 230.66 |  |  |
Stock purchased under share buyback | $ 193,100,000 |  |  |
Subsequent Event | October 30, 2018 |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Stock purchased under share buyback (shares) |  |  | 3.5 |
Stock purchased under share buyback, average price per share (in dollars per share) |  |  | $ 209.82 |
Stock purchased under share buyback |  |  | $ 736,500,000 |

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