Consolidated Statements of Changes in Equity - USD ($) $ in Thousands		Total		Common Stock [Member]	Members Paid In Capital [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated other comprehensive income (loss) [Member]	[1],[2]	Treasury Stock [Member]	Noncontrolling interests [Member]
Balance (Predecessor [Member]) at Nov. 30, 2012				$ 20		$ 2,219,959	$ 1,281,855	$ (53,137)		$ (12,682)
Stockholders' Equity
Issued | Predecessor [Member]				1
Net earnings attributable to Jefferies Group LLC | Predecessor [Member]							80,138
Tax benefit (detriment) for issuance of share-based awards | Predecessor [Member]		$ 17,965				(17,965)
Benefit plan share activity | Predecessor [Member]	[3]					3,138
Share-based expense, net of forfeitures and clawbacks | Predecessor [Member]						22,288
Proceeds from exercise of stock options | Predecessor [Member]						57
Acquisitions and contingent consideration | Predecessor [Member]						2,535
Dividend equivalents on share-based plans | Predecessor [Member]						1,418
Dividends | Predecessor [Member]							(17,217)
Currency adjustments | Predecessor [Member]		(10,018)						(10,018)
Pension adjustments, net of tax | Predecessor [Member]		0	[4]					0
Purchases | Predecessor [Member]										(166,541)
Returns / forfeitures | Predecessor [Member]										(1,922)
Balance (Successor [Member]) at Feb. 28, 2013					$ 4,754,101			0
Balance (Predecessor [Member]) at Feb. 28, 2013		3,331,927		$ 21		$ 2,231,430	$ 1,344,776	(63,155)		$ (181,145)
Balance (Predecessor [Member]) at Nov. 30, 2012											$ 346,738
Noncontrolling interests:
Net earnings attributable to noncontrolling interests | Predecessor [Member]		10,704									10,704
Contributions | Predecessor [Member]											0
Distributions | Predecessor [Member]											(1,262)
Redemptions | Predecessor [Member]											0
Balance (Successor [Member]) at Feb. 28, 2013											356,180
Balance (Predecessor [Member]) at Feb. 28, 2013											356,180
Noncontrolling interests:
Total equity | Predecessor [Member]		3,688,107
Contributions | Successor [Member]					362,255
Net earnings attributable to Jefferies Group LLC | Successor [Member]					161,191
Tax benefit (detriment) for issuance of share-based awards | Successor [Member]		(2,873)			2,873
Currency adjustments | Successor [Member]		21,341						21,341
Pension adjustments, net of tax | Successor [Member]		2,759	[4]					2,759
Balance (Successor [Member]) at Nov. 30, 2013		5,304,520			5,280,420			24,100
Noncontrolling interests:
Net earnings attributable to noncontrolling interests | Successor [Member]		8,418									8,418
Contributions | Successor [Member]											100,210
Distributions | Successor [Member]											(25)
Redemptions | Successor [Member]											(347,629)
Balance (Successor [Member]) at Nov. 30, 2013											117,154
Noncontrolling interests:
Total equity | Successor [Member]		5,421,674
Net earnings attributable to Jefferies Group LLC | Successor [Member]					157,560
Tax benefit (detriment) for issuance of share-based awards | Successor [Member]		(1,276)			1,276
Currency adjustments | Successor [Member]		(30,995)						(30,995)
Pension adjustments, net of tax | Successor [Member]		(7,778)	[4]					(7,778)
Balance (Successor [Member]) at Nov. 30, 2014		5,424,583			5,439,256			(14,673)
Noncontrolling interests:
Net earnings attributable to noncontrolling interests | Successor [Member]		3,400									3,400
Contributions | Successor [Member]											39,075
Deconsolidation of asset management company | Successor [Member]											(120,781)
Balance (Successor [Member]) at Nov. 30, 2014											38,848
Balance at Nov. 30, 2014		38,848
Noncontrolling interests:
Total equity | Successor [Member]		5,463,431
Net earnings attributable to Jefferies Group LLC | Successor [Member]					93,534
Tax benefit (detriment) for issuance of share-based awards | Successor [Member]		5,935			(5,935)
Currency adjustments | Successor [Member]		(27,157)						(27,157)
Pension adjustments, net of tax | Successor [Member]		(3,116)	[4]					(3,116)
Balance (Successor [Member]) at Nov. 30, 2015		5,481,909			$ 5,526,855			$ (44,946)
Noncontrolling interests:
Net earnings attributable to noncontrolling interests | Successor [Member]		1,795									1,795
Contributions | Successor [Member]											0
Distributions | Successor [Member]											(4,982)
Deconsolidation of asset management company | Successor [Member]											(8,193)
Balance (Successor [Member]) at Nov. 30, 2015											$ 27,468
Balance at Nov. 30, 2015		27,468
Noncontrolling interests:
Total equity | Successor [Member]		$ 5,509,377

[1] The components of other comprehensive income (loss) are attributable to Jefferies Group LLC (formerly Jefferies Group, Inc.). None of the components of other comprehensive income (loss) are attributable to noncontrolling interests.

[2] There were no material reclassifications out of Accumulated other comprehensive income during the year ended November 30, 2015, the year ended November 30, 2014 and the nine months ended November 30, 2013.

[3] Includes grants related to the Incentive Plan, Deferred Compensation Plan and Directors' Plan.

[4] Includes income tax benefit of $4.2 million, $0.5 million, $2.5 million and $0.0 for the years ended November 30, 2015 and 2014, the nine months ended November 30, 2013 and the three months ended February 28, 2013, respectively.