Schedule I (PARENT COMPANY ONLY) - CONDENSED STATEMENTS OF FINANCIAL CONDITION (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Nov. 30, 2019
ASSETS
Cash and securities segregated and on deposited for regulatory purposes or deposited with clearing and depository organizations	$ 604,321	$ 796,797
Financial instruments owned, at fair value	17,686,052	16,363,374
Investment in subsidiaries	1,000,730	944,509
Other assets	972,479	1,093,868
Total assets	47,751,997	43,516,115
LIABILITIES AND EQUITY
Short-term borrowings	764,715	548,490
Financial instruments sold, not yet purchased, at fair value	10,017,522	10,532,460
Accrued expenses and other liabilities	2,663,639	1,431,144
Long-term debt	6,895,680	7,003,358
Total liabilities	41,385,865	37,386,368
EQUITY
Member’s paid-in capital	6,569,328	6,329,677
Accumulated other comprehensive income (loss):
Currency translation and other adjustments	(141,843)	(179,378)
Changes in instrument specific credit risk	(71,151)	(18,889)
Additional minimum pension liability	(8,104)	(6,079)
Available-for-sale securities	513	141
Total accumulated other comprehensive loss	(220,585)	(204,205)
Total Jefferies Group LLC member’s equity	6,348,743	6,125,472
Total liabilities and equity	47,751,997	43,516,115
Parent company
ASSETS
Cash and cash equivalents	1,281,786	128,535
Cash and securities segregated and on deposited for regulatory purposes or deposited with clearing and depository organizations	21,892	38,817
Financial instruments owned, at fair value	69,856	72,736
Loans to and investments in related parties	655,930	643,720
Investment in subsidiaries	6,411,169	5,639,208
Advances to subsidiaries	2,822,937	3,979,139
Subordinated notes receivable	2,443,383	2,442,625
Other assets	354,606	333,798
Total assets	14,061,559	13,278,578
LIABILITIES AND EQUITY
Short-term borrowings	11,867	20,989
Financial instruments sold, not yet purchased, at fair value	0	2,307
Accrued expenses and other liabilities	1,045,000	365,540
Long-term debt	6,655,949	6,764,270
Total liabilities	7,712,816	7,153,106
EQUITY
Member’s paid-in capital	6,569,328	6,329,677
Accumulated other comprehensive income (loss):
Currency translation and other adjustments	(141,843)	(179,378)
Changes in instrument specific credit risk	(71,151)	(18,889)
Additional minimum pension liability	(8,104)	(6,079)
Available-for-sale securities	513	141
Total accumulated other comprehensive loss	(220,585)	(204,205)
Total Jefferies Group LLC member’s equity	6,348,743	6,125,472
Total liabilities and equity	$ 14,061,559	$ 13,278,578