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Other Revenue, Revenue From Arrangements With Strategic Partners

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Revenues from Contracts with Customers - Components of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 2,222,257	$ 2,594,887
Principal transactions									769,258	524,296	$ 796,633
Revenues from arrangements with strategic partners									3,066	0
Interest									1,496,529	1,207,095	905,601
Other									93,422	103,354
Total revenues	$ 1,073,536	$ 1,141,631	$ 1,314,493	$ 1,054,872	$ 1,097,943	$ 1,088,285	$ 1,156,809	$ 1,086,595	4,584,532	4,429,632	4,178,582
Commissions and other fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									676,309	663,470
Investment banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									1,528,729	1,910,203	$ 1,764,285
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 17,219	$ 21,214