Variable Interest Entities (Assets And Liabilities Of Consolidated VIEs) (Details) - USD ($) $ in Thousands		May 31, 2019	Nov. 30, 2018
Variable Interest Entity [Line Items]
Securities purchased under agreement to resell		$ 4,027,332	$ 2,785,758
Receivables		6,911,314	6,287,401
Other		1,985,328	1,859,561
Total assets	[1]	48,523,940	47,131,095
Other secured financings		1,799,569	1,534,271
Total liabilities	[1]	38,502,641	36,907,059
Jefferies Group
Variable Interest Entity [Line Items]
Secured financings eliminated in consolidation			1,000
Consolidation adjustments
Variable Interest Entity [Line Items]
Intercompany payables		41,500	44,100
Securitization Vehicles
Variable Interest Entity [Line Items]
Securities purchased under agreement to resell		1,266,900	883,100
Receivables		549,900	626,000
Other		36,200	78,400
Total assets		1,853,000	1,587,500
Other secured financings		1,798,900	1,535,300
Other		43,500	45,900
Total liabilities		$ 1,842,400	$ 1,581,200

[1] Total assets include assets related to variable interest entities of $587.6 million and $704.4 million at May 31, 2019 and November 30, 2018, respectively, and Total liabilities include liabilities related to variable interest entities of $1,800.9 million and $1,535.8 million at May 31, 2019 and November 30, 2018, respectively. See Note 8 for additional information related to variable interest entities.