Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Cumulative effect of the adoption of accounting standards	Cumulative effect of the adoption of accounting standards, adjusted balance	Common Shares $1 Par Value	Common Shares $1 Par Value Cumulative effect of the adoption of accounting standards, adjusted balance	Additional Paid-In Capital	Additional Paid-In Capital Cumulative effect of the adoption of accounting standards, adjusted balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative effect of the adoption of accounting standards, adjusted balance	Retained Earnings	Retained Earnings Cumulative effect of the adoption of accounting standards	Retained Earnings Cumulative effect of the adoption of accounting standards, adjusted balance	Subtotal	Subtotal Cumulative effect of the adoption of accounting standards	Subtotal Cumulative effect of the adoption of accounting standards, adjusted balance	Noncontrolling Interests	Noncontrolling Interests Cumulative effect of the adoption of accounting standards, adjusted balance
Beginning balance at Nov. 30, 2020	$ 9,438,525	$ (19,915)	$ 9,418,610	$ 249,751	$ 249,751	$ 2,911,223	$ 2,911,223	$ (288,917)	$ (288,917)	$ 6,531,836	$ (19,915)	$ 6,511,921	$ 9,403,893	$ (19,915)	$ 9,383,978	$ 34,632	$ 34,632
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Jefferies Financial Group Inc. common shareholders	582,435									582,435			582,435
Net loss attributable to the noncontrolling interests	(743)															(743)
Other comprehensive income (loss), net of income taxes	(57,627)							(57,627)					(57,627)
Contributions from noncontrolling interests	80															80
Distributions to noncontrolling interests	(1,473)															(1,473)
Share-based compensation expense	20,678					20,678							20,678
Change in fair value of redeemable noncontrolling interests	(7,058)					(7,058)							(7,058)
Purchase of common shares for treasury	(130,097)			(5,103)		(124,994)							(130,097)
Dividends	(52,896)									(52,896)			(52,896)
Other	6,449			2,055		4,394							6,449			0
Ending balance at Feb. 28, 2021	9,778,358			246,703		2,804,243		(346,544)		7,041,460			9,745,862			32,496
Beginning balance at Nov. 30, 2021	10,579,640			243,541		2,742,244		(372,143)		7,940,113			10,553,755			25,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Jefferies Financial Group Inc. common shareholders	327,447									327,447			327,447
Net loss attributable to the noncontrolling interests	(969)															(969)
Other comprehensive income (loss), net of income taxes	41,835							41,835					41,835
Contributions from noncontrolling interests	33,703															33,703
Share-based compensation expense	9,746					9,746							9,746
Change in fair value of redeemable noncontrolling interests	(7,991)					(7,991)							(7,991)
Purchase of common shares for treasury	(364,189)			(10,038)		(354,151)							(364,189)
Dividends	(77,908)									(77,908)			(77,908)
Other	7,605			6,666		939							7,605			0
Ending balance at Feb. 28, 2022	$ 10,548,919			$ 240,169		$ 2,390,787		$ (330,308)		$ 8,189,652			$ 10,490,300			$ 58,619