Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Beef processing services	$ 1,983,058	$ 1,920,748	$ 5,872,424	$ 5,629,565
Commissions	159,085	138,736	488,526	285,584
Principal transactions	160,345	(41,171)	617,133	283,228
Investment banking	465,192	309,339	1,210,661	586,473
Interest income	257,124	236,388	805,796	506,790
Net realized securities gains	3,848	4,987	20,903	244,378
Other	185,012	140,014	435,040	355,483
Total revenues	3,213,664	2,709,041	9,450,483	7,891,501
Net revenues	3,003,643	2,532,052	8,798,130	7,504,922
Expenses:
Cost of sales	2,001,779	1,902,163	5,988,785	5,654,277
Compensation and benefits	516,635	321,663	1,506,635	771,405
Floor brokerage and clearing fees	56,030	34,500	159,673	67,491
Interest	29,499	17,234	87,219	59,761
Depreciation and amortization	46,464	47,049	132,594	120,524
Selling, general and other expenses	263,994	176,600	614,348	406,214
Total expenses	2,914,401	2,499,209	8,489,254	7,079,672
Income from continuing operations before income taxes and income related to associated companies	89,242	32,843	308,876	425,250
Income related to associated companies	28,917	23,889	84,298	89,560
Income from continuing operations before income taxes	118,159	56,732	393,174	514,810
Income tax provision	59,906	26,758	163,885	106,881
Income from continuing operations	58,253	29,974	229,289	407,929
Loss from discontinued operations, net of income tax (benefit) of $(3,057), $(10,575), $(10,137) and $(20,738)	(5,676)	(19,751)	(18,825)	(38,941)
Gain on disposal of discontinued operations, net of income tax provision of $4,407, $2,240, $4,407 and $2,272	7,685	4,160	8,185	4,220
Net income	60,262	14,383	218,649	373,208
Net (income) loss attributable to the noncontrolling interest	1,058	(253)	(567)	1,098
Net (income) loss attributable to the redeemable noncontrolling interests	(5,625)	(10,132)	(966)	(11,239)
Preferred stock dividends	(1,016)	(1,027)	(3,047)	(2,381)
Net income attributable to Leucadia National Corporation common shareholders	54,679	2,971	214,069	360,686
Basic earnings (loss) per common share attributable to Leucadia National Corporation common shareholders:
Income from continuing operations	$ 0.14	$ 0.05	$ 0.59	$ 1.18
Loss from discontinued operations	$ (0.02)	$ (0.05)	$ (0.05)	$ (0.11)
Gain on disposal of discontinued operations	$ 0.02	$ 0.01	$ 0.02	$ 0.01
Net income	$ 0.14	$ 0.01	$ 0.56	$ 1.08
Diluted earnings (loss) per common share attributable to Leucadia National Corporation common shareholders:
Income from continuing operations	$ 0.14	$ 0.05	$ 0.59	$ 1.16
Loss from discontinued operations	$ (0.02)	$ (0.05)	$ (0.05)	$ (0.11)
Gain on disposal of discontinued operations	$ 0.02	$ 0.01	$ 0.02	$ 0.01
Net income	$ 0.14	$ 0.01	$ 0.56	$ 1.06
Amounts attributable to Leucadia National Corporation common shareholders:
Income from continuing operations, net of taxes	52,745	18,321	224,761	394,656
Loss from discontinued operations, net of taxes	(5,751)	(19,510)	(18,877)	(38,190)
Gain on disposal of discontinued operations, net of taxes	7,685	4,160	8,185	4,220
Net income attributable to Leucadia National Corporation common shareholders	54,679	2,971	214,069	360,686
Investment Banking And Capital Markets Segment [Member]
Expenses:
Interest	$ 210,021	$ 176,989	$ 652,353	$ 386,579