Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 195,941	$ 407,916	$ 640,774	$ 1,343,784
Other comprehensive income (loss):
Net unrealized holding gains (losses) on available for sale securities arising during the period, net of income tax provision (benefit) of $(159), $(16), $(336) and $(43)	(490)	(49)	(1,036)	(136)
Net change in unrealized holding gains (losses) on available for sale securities, net of income tax provision (benefit) of $(159), $(16), $(336) and $(43)	(490)	(49)	(1,036)	(136)
Net foreign currency translation adjustments arising during the period, net of income tax provision (benefit) of $(6,605), $(2,942), $(15,095) and $1,659	(26,354)	(9,203)	(49,043)	5,273
Net change in foreign currency translation adjustments, net of income tax provision (benefit) of $(6,605), $(2,942), $(15,095) and $1,659	(26,354)	(9,203)	(49,043)	5,273
Net change in instrument-specific credit risk arising during the period, net of income tax provision (benefit) of $(2,354), $4,352, $22,380 and $(24,157)	(7,312)	13,501	69,864	(74,661)
Less: reclassification adjustment for changes in instrument-specific credit risk included in net income, net of income tax provision (benefit) of $(44), $(321), $(52) and $599	137	998	161	(1,861)
Net change in instrument-specific credit risk gains (losses), net of income tax provision (benefit) of $(2,310), $4,673, $22,432 and $(24,756)	(7,175)	14,499	70,025	(76,522)
Net pension gains (losses) arising during the period, net of income tax provision (benefit) of $0, $0, $0 and $0	0	0	0	0
Reclassification adjustment for pension (gains) losses included in net income, net of income tax provision (benefit) of $(212), $(270), $(624) and $(795)	626	778	1,827	2,329
Net change in pension liability, net of income tax provision (benefit) of $212, $270, $624 and $795	626	778	1,827	2,329
Other comprehensive income (loss), net of income taxes	(33,393)	6,025	21,773	(69,056)
Comprehensive income	162,548	413,941	662,547	1,274,728
Comprehensive loss attributable to the noncontrolling interests	1,243	1,324	1,116	2,736
Comprehensive loss attributable to the redeemable noncontrolling interests	345	68	1,241	1,071
Preferred stock dividends	(2,070)	(1,849)	(6,211)	(5,101)
Comprehensive income attributable to Jefferies Financial Group Inc. common shareholders	$ 162,066	$ 413,484	$ 658,693	$ 1,273,434