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Accounting Policies Accounting Policies - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2019 | Aug. 31, 2018 | Nov. 30, 2018
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Currency translation adjustments | $ 44.9 | $ 50.7 | $ 66.8 | $ 77.1 |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | 146.5 | 126.3 | 421.5 | 665.0 |
Sales Allowances Current | $ 115.7 | 125.9 | $ 115.7 | 125.9 | $ 142.1
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  |  |  | 20.9 |
Adjustment |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Currency translation adjustments |  | $ 3.1 |  | $ 4.3 |

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