Derivative Financial Instruments - Fair Value and Related Number of Derivative Contracts Categorized by Type of Derivative Contract (Details) $ in Thousands	Nov. 30, 2021 USD ($) Contract	Nov. 30, 2020 USD ($) Contract
Derivatives, Fair Value [Line Items]
Net amounts per consolidated statements of financial condition, assets	$ 568,959	$ 467,817
Net amounts per consolidated statements of financial condition, liabilities	1,403,504	641,065
Exchange-traded
Derivatives, Fair Value [Line Items]
Fair value, assets	1,208,316	560,810
Fair value, liabilities	1,036,998	565,390
Amounts offset in the consolidated statements of financial condition, assets	(1,008,091)	(546,989)
Amounts offset in the consolidated statements of financial condition, liabilities	(1,008,091)	(546,989)
Cleared OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	493,261	109,456
Fair value, liabilities	508,333	147,713
Amounts offset in the consolidated statements of financial condition, assets	(483,339)	(109,228)
Amounts offset in the consolidated statements of financial condition, liabilities	(508,333)	(111,654)
Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	2,171,948	1,353,687
Fair value, liabilities	3,559,183	1,726,621
Amounts offset in the consolidated statements of financial condition, assets	(1,813,136)	(899,919)
Amounts offset in the consolidated statements of financial condition, liabilities	(2,184,586)	(1,140,016)
Derivatives designated as accounting hedges:
Derivatives, Fair Value [Line Items]
Fair value, assets	66,188	67,381
Fair value, liabilities	32,200	10,197
Derivatives designated as accounting hedges: \| Interest rate contracts: \| Cleared OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 35,726	$ 67,381
Number of contracts, assets \| Contract	2	1
Fair value, liabilities	$ 32,200	$ 6,891
Number of contracts, liabilities \| Contract	1	1
Derivatives designated as accounting hedges: \| Foreign exchange contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 30,462	$ 0
Number of contracts, assets \| Contract	4	0
Fair value, liabilities	$ 0	$ 3,306
Number of contracts, liabilities \| Contract	0	11
Derivatives not designated as accounting hedges:
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 3,807,337	$ 1,956,572
Fair value, liabilities	5,072,314	2,429,527
Derivatives not designated as accounting hedges: \| Interest rate contracts: \| Exchange-traded
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 1,262	$ 2,442
Number of contracts, assets \| Contract	23,888	52,620
Fair value, liabilities	$ 756	$ 439
Number of contracts, liabilities \| Contract	39,195	42,611
Derivatives not designated as accounting hedges: \| Interest rate contracts: \| Cleared OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 373,355	$ 17,379
Number of contracts, assets \| Contract	4,505	3,785
Fair value, liabilities	$ 367,134	$ 114,524
Number of contracts, liabilities \| Contract	4,467	4,307
Derivatives not designated as accounting hedges: \| Interest rate contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 322,353	$ 626,210
Number of contracts, assets \| Contract	1,037	1,493
Fair value, liabilities	$ 283,481	$ 317,534
Number of contracts, liabilities \| Contract	967	466
Derivatives not designated as accounting hedges: \| Foreign exchange contracts: \| Exchange-traded
Derivatives, Fair Value [Line Items]
Fair value, assets		$ 0
Number of contracts, assets \| Contract		0
Fair value, liabilities		$ 0
Number of contracts, liabilities \| Contract		180
Derivatives not designated as accounting hedges: \| Foreign exchange contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 1,428,712	$ 297,165
Number of contracts, assets \| Contract	17,792	15,005
Fair value, liabilities	$ 1,437,116	$ 277,628
Number of contracts, liabilities \| Contract	17,576	15,049
Derivatives not designated as accounting hedges: \| Equity contracts: \| Exchange-traded
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 1,206,606	$ 558,304
Number of contracts, assets \| Contract	1,582,713	1,147,486
Fair value, liabilities	$ 1,036,019	$ 564,951
Number of contracts, liabilities \| Contract	1,450,624	971,938
Derivatives not designated as accounting hedges: \| Equity contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 377,132	$ 429,304
Number of contracts, assets \| Contract	2,888	2,374
Fair value, liabilities	$ 1,824,418	$ 1,125,944
Number of contracts, liabilities \| Contract	2,682	2,421
Derivatives not designated as accounting hedges: \| Commodity contracts: \| Exchange-traded
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 448	$ 64
Number of contracts, assets \| Contract	1,394	3,207
Fair value, liabilities	$ 223	$ 0
Number of contracts, liabilities \| Contract	1,457	2,654
Derivatives not designated as accounting hedges: \| Commodity contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 0
Number of contracts, assets \| Contract	1
Fair value, liabilities	$ 0
Number of contracts, liabilities \| Contract	0
Derivatives not designated as accounting hedges: \| Credit contracts: \| Cleared OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 84,180	$ 24,696
Number of contracts, assets \| Contract	132	39
Fair value, liabilities	$ 108,999	$ 26,298
Number of contracts, liabilities \| Contract	128	31
Derivatives not designated as accounting hedges: \| Credit contracts: \| Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair value, assets	$ 13,289	$ 1,008
Number of contracts, assets \| Contract	14	11
Fair value, liabilities	$ 14,168	$ 2,209
Number of contracts, liabilities \| Contract	17	11

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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