Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021	Nov. 30, 2021
Segment Reporting Information [Line Items]
Total consolidated revenues		$ 1,369,082	$ 1,950,507	$ 3,100,997	$ 4,437,449
Total consolidated income before income taxes		166,541	474,139	558,873	1,274,924
Total consolidated depreciation and amortization expenses		40,307	39,440	86,244	78,207
Total consolidated assets	[1]	57,213,810		57,213,810		$ 60,404,110
Reconciling items - Parent Company interest
Segment Reporting Information [Line Items]
Total consolidated income before income taxes		(8,385)	(13,829)	(16,776)	(27,731)
Reportable Segments
Segment Reporting Information [Line Items]
Total consolidated revenues		1,369,598	1,947,076	3,101,653	4,431,368
Total consolidated income before income taxes		175,282	484,512	576,005	1,296,400
Total consolidated assets		57,442,363		57,442,363		60,805,150
Reportable Segments | Investment Banking and Capital Markets
Segment Reporting Information [Line Items]
Total consolidated revenues		1,098,378	1,598,862	2,580,196	3,586,358
Total consolidated income before income taxes		188,063	435,015	608,948	991,246
Total consolidated depreciation and amortization expenses		22,766	20,805	46,321	41,515
Total consolidated assets		49,754,402		49,754,402		52,903,374
Reportable Segments | Asset Management
Segment Reporting Information [Line Items]
Total consolidated revenues		31,147	50,675	91,103	279,877
Total consolidated income before income taxes		973	7,148	16,982	191,080
Total consolidated depreciation and amortization expenses		467	489	829	968
Total consolidated assets		3,461,539		3,461,539		3,205,799
Reportable Segments | Merchant Banking
Segment Reporting Information [Line Items]
Total consolidated revenues		238,255	296,815	427,790	563,819
Total consolidated income before income taxes		(3,628)	54,448	(28,035)	146,650
Total consolidated depreciation and amortization expenses		16,655	17,268	38,251	33,982
Total consolidated assets		2,323,547		2,323,547		2,263,050
Reportable Segments | Corporate
Segment Reporting Information [Line Items]
Total consolidated revenues		1,818	724	2,564	1,314
Total consolidated income before income taxes		(10,126)	(12,099)	(21,890)	(32,576)
Total consolidated depreciation and amortization expenses		419	878	843	1,742
Total consolidated assets		1,902,875		1,902,875		2,432,927
Reconciling items - Consolidation adjustments
Segment Reporting Information [Line Items]
Total consolidated revenues		(516)	3,431	(656)	6,081
Total consolidated income before income taxes		(356)	$ 3,456	(356)	$ 6,255
Total consolidated assets		$ (228,553)		$ (228,553)		$ (401,040)

[1] Total assets include assets related to variable interest entities of $854.8 million and $1.05 billion at May 31, 2022 and November 30, 2021, respectively, Total liabilities include liabilities related to variable interest entities of $2.68 billion and $4.64 billion at May 31, 2022 and November 30, 2021, respectively, and Noncontrolling interests include noncontrolling interests related to variable interest entities of $34.6 million at May 31, 2022. See Note 7 for additional information related to variable interest entities.