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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2025 | Aug. 31, 2024 | Aug. 31, 2025 | Aug. 31, 2024 | Nov. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |
Cash equivalents | $ 164.7 |  | $ 164.7 |  | $ 385.1
Other comprehensive income (loss) | $ 109.8 | $ 157.3 | $ 327.3 | $ 464.4 |

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