Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Beef processing services	$ 1,874,495	$ 1,797,380	$ 3,433,518	$ 3,428,751
Commissions	152,643	146,157	298,465	301,981
Principal transactions	226,035	262,347	642,536	159,864
Investment banking	351,863	253,046	759,884	483,976
Interest income	249,598	231,593	473,228	463,609
Net realized securities gains	1,111	7,414	1,571	8,142
Other	133,970	143,379	460,882	202,302
Total revenues	2,989,715	2,841,316	6,070,084	5,048,625
Interest expense	27,834	22,706	55,218	45,024
Net revenues	2,732,380	2,625,358	5,600,362	4,640,464
Expenses:
Cost of sales	1,820,551	1,776,370	3,353,645	3,424,422
Compensation and benefits	491,573	458,091	995,756	847,498
Floor brokerage and clearing fees	44,435	43,591	90,293	84,070
Interest	27,834	22,706	55,218	45,024
Depreciation and amortization	50,717	50,769	100,227	100,379
Selling, general and other expenses	186,692	186,259	367,974	373,514
Total expenses	2,621,802	2,537,786	4,963,113	4,874,907
Income (loss) before income taxes and income (loss) related to associated companies	110,578	87,572	637,249	(234,443)
Income (loss) related to associated companies	14,104	51,890	(114,470)	71,942
Income (loss) before income taxes	124,682	139,462	522,779	(162,501)
Income tax provision (benefit)	50,620	68,850	154,794	(14,511)
Net income (loss)	74,062	70,612	367,985	(147,990)
Net loss attributable to the noncontrolling interests	1,446	760	1,969	1,812
Net income attributable to the redeemable noncontrolling interests	(16,300)	(13,068)	(28,322)	(17,382)
Preferred stock dividends	(1,015)	(1,015)	(2,031)	(2,031)
Net income (loss) attributable to Leucadia National Corporation common shareholders	$ 58,193	$ 57,289	$ 339,601	$ (165,591)
Basic earnings (loss) per common share attributable to Leucadia National Corporation common shareholders:
Net income (loss) (in dollars per share)	$ 0.16	$ 0.15	$ 0.92	$ (0.44)
Diluted earnings (loss) per common share attributable to Leucadia National Corporation common shareholders:
Net income (loss) (in dollars per share)	0.16	0.15	0.91	(0.44)
Dividends per common share (in dollars per share)	$ 0.0625	$ 0.0625	$ 0.1250	$ 0.125
Investment Banking And Capital Markets Segment
Revenues:
Interest expense	$ 257,335	$ 215,958	$ 469,722	$ 408,161
Expenses:
Interest	$ 257,335	$ 215,958	$ 469,722	$ 408,161