Compensation Plans - Compensation Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 44.5	$ 96.7
Profit sharing plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	5.3	4.0
Restricted cash awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	32.1	49.1
Stock options and Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	0.0	39.4
Restricted stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 7.1	$ 4.2