Goodwill and Intangible Assets - Goodwill (Details) $ in Thousands	6 Months Ended
	May 31, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,736,114
Currency translation and other adjustments	2,076
Goodwill, ending balance	1,738,190
Investment Banking and Capital Markets
Goodwill [Roll Forward]
Goodwill, beginning balance	1,552,944
Goodwill, ending balance	1,555,020
Asset Management
Goodwill [Roll Forward]
Goodwill, beginning balance	183,170
Goodwill, ending balance	$ 183,170