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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Dec. 01, 2019 | Feb. 29, 2020 | Feb. 28, 2019 | Nov. 30, 2019
Cash equivalents |  | $ 244,500 |  | $ 302,500
Other comprehensive income (loss) |  | 59,700 | $ 30,000 |
Retained earnings |  | 2,211,851 |  | 2,157,183
Financial Service [Member] |  |  |  |
Contract assets |  | $ 21,100 |  | $ 20,600
Accounting Standards Update 2016-02 [Member] |  |  |  |
Cumulative Effect on Retained Earnings, Net of Tax | $ 1,500 |  |  |
Accounting Standards Update 2018-02 [Member] |  |  |  |
Cumulative Effect on Retained Earnings, Net of Tax | $ 1,600 |  |  |

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