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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 11 Months Ended |  |
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Jun. 30, 2016 | Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2016 | Nov. 30, 2015 | Jun. 30, 2016 | Aug. 02, 2016 | Aug. 04, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |
Basic earnings per share from discontinued operations (in dollars per share) |  | $ 0.16 | $ 2.06 | $ 0.16 | $ 2.01 |  |  |
Diluted earnings per share from discontinued operations (in dollars per share) |  | $ 0.16 | $ 2.03 | $ 0.16 | $ 1.98 |  |  |
Options granted and excluded from the computation of diluted earnings per share (shares) |  | 0.7 | 0.3 | 0.6 | 0.4 |  |  |
Employee Payroll Taxes Due on Restricted Stock |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |
Total purchase price of shares repurchased |  |  |  | 0.2 |  |  |  |
Stock purchased under share buyback, average price per share (dollars per share) |  |  |  | $ 99.88 |  |  |  |
Total purchase price of shares repurchased |  |  |  | $ 15,500,000 |  |  |  |
Share Buyback Program, August 4, 2015 |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |
Share buyback program, authorized amount |  |  |  |  |  |  |  | $ 500,000,000
Total purchase price of shares repurchased | 0.1 |  |  |  |  | 5.7 |  |
Stock purchased under share buyback, average price per share (dollars per share) | $ 94.09 |  |  |  |  | $ 87.89 |  |
Total purchase price of shares repurchased | $ 3,700,000 |  |  |  |  | $ 500,000,000 |  |
Share Buyback Program, August 2, 2016 |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |
Share buyback program, authorized amount |  |  |  |  |  |  | $ 500,000,000.0 |

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