Compensation Plans - Compensation Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 42.5	$ 55.1	$ 129.9	$ 212.3
Profit sharing plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	1.9	1.5	9.5	6.8
Restricted cash awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	32.3	49.1	94.3	151.1
Stock options and Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	0.0	0.0	0.0	41.3
Restricted stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 8.3	$ 4.5	$ 26.1	$ 13.1