Organization and Basis of Presentation (Details) $ in Thousands	3 Months Ended
Feb. 29, 2020 USD ($) segment	Feb. 28, 2019 USD ($)
Debt Instrument [Line Items]
Number of reportable segments \| segment	2
Increase of commissions and other fees	$ 775,941	$ 447,407
Decrease of other revenue	29,729	11,830
Commissions and Other Fees
Debt Instrument [Line Items]
Increase of commissions and other fees	$ 179,535	155,142
Reclassified Presentation of Certain Other Fees \| Commissions and Other Fees
Debt Instrument [Line Items]
Increase of commissions and other fees		$ 7,800

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration