CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Statement of Comprehensive Income [Abstract]
Currency translation adjustments and other, tax benefits (expenses)	$ (8.3)	$ 1.3	$ (8.3)	$ 4.5
Changes in instrument specific credit risk, tax benefits (expenses)	$ (11.5)	7.1	$ (24.7)	29.4
Changes in instrument specific credit risk reclassified to principal transactions revenues		2.7		2.9
Changes in instrument specific credit risk reclassified to principal transactions revenues, tax benefits (expenses)		$ 0.8		$ 0.9