Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022	Nov. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash equivalents	$ 372.6		$ 372.6		$ 15.8
Other comprehensive income (loss)	$ 164.4	$ 210.7	$ 289.9	$ 344.9