Consolidated Statements of Earnings (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended	3 Months Ended
	May 31, 2014 Successor [Member]	May 31, 2013 Successor [Member]	May 31, 2014 Successor [Member]	Feb. 28, 2013 Predecessor [Member]
Revenues:
Commissions	$ 167,378	$ 162,759	$ 329,441	$ 146,240
Principal transactions	183,416	134,571	421,779	300,278
Investment banking	331,149	277,134	745,469	288,278
Asset management fees and investment income from managed funds	(3,101)	10,527	6,856	10,883
Interest	283,540	258,665	532,808	249,277
Other	8,404	26,245	31,473	27,004
Total revenues	970,786	869,901	2,067,826	1,021,960
Interest expense	247,794	211,463	445,806	203,416
Net revenues	722,992	658,438	1,622,020	818,544
Interest on mandatorily redeemable preferred interests of consolidated subsidiaries		3,368		10,961
Net revenues, less interest on mandatorily redeemable preferred interests of consolidated subsidiaries	722,992	655,070	1,622,020	807,583
Non-interest expenses:
Compensation and benefits	404,876	373,880	912,775	474,217
Non-compensation expenses:
Floor brokerage and clearing fees	54,020	48,902	103,533	46,155
Technology and communications	70,257	63,839	134,563	59,878
Occupancy and equipment rental	26,673	32,225	53,175	24,309
Business development	24,917	22,732	51,393	24,927
Professional services	25,345	29,519	50,164	24,135
Other	17,767	18,720	35,011	14,475
Total non-compensation expenses	218,979	215,937	427,839	193,879
Total non-interest expenses	623,855	589,817	1,340,614	668,096
Earnings before income taxes	99,137	65,253	281,406	139,487
Income tax expense	37,323	25,007	104,200	48,645
Net earnings	61,814	40,246	177,206	90,842
Net earnings attributable to noncontrolling interests	488	738	3,448	10,704
Net earnings attributable to Jefferies Group LLC/common stockholders	$ 61,326	$ 39,508	$ 173,758	$ 80,138
Earnings per common share:
Basic				$ 0.35
Diluted				$ 0.35
Dividends declared per common share				$ 0.075
Weighted average common shares:
Basic				213,732
Diluted				217,844