Consolidated Statements Of Financial Condition (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 4,186,725		$ 3,907,595
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	3,288,517	[1]	3,616,602	[1]
Financial instruments owned, including securities pledged of $13,994,936 and $13,253,537:
Trading assets, at fair value	17,942,865		16,699,542
Available for sale securities	1,944,480		2,866,143
Total financial instruments owned	19,887,345		19,565,685
Investments in managed funds	251,188		57,285
Loans to and investments in associated companies	1,295,866		1,258,341
Securities borrowed	6,097,098		5,359,846
Securities purchased under agreements to resell	4,609,422		3,746,920
Securities received as collateral	126,106		11,063
Receivables from brokers, dealers and clearing organizations	2,601,721		2,180,996
Receivables from customers of securities operations	1,805,451		1,046,945
Property, equipment and leasehold improvements, net	936,923		885,859
Intangible assets, net	999,240		1,020,529
Goodwill	1,750,870		1,748,099
Deferred tax asset, net	1,742,268		1,809,943
Other assets	1,828,995		1,651,073
Total	51,407,735		47,866,781
LIABILITIES
Short-term borrowings	12,000		12,000
Trading liabilities, at fair value	8,172,300		7,293,102
Securities loaned	2,901,159		2,506,122
Securities sold under agreements to repurchase	11,668,130		10,779,845
Other secured financings	240,288		234,711
Obligation to return securities received as collateral	126,106		11,063
Payables to brokers, dealers and clearing organizations	1,477,030		1,379,243
Payables to customers of securities operations	5,623,278		5,208,768
Trade payables, expense accruals and other liabilities	1,660,870		1,721,934
Long-term debt	8,798,056		8,180,865
Total liabilities	40,679,217		37,327,653
Commitments and contingencies
MEZZANINE EQUITY
Redeemable noncontrolling interests	239,794		241,075
Mandatorily redeemable convertible preferred shares	125,000		125,000
EQUITY
Common shares, par value $1 per share, authorized 600,000,000 shares; 368,536,178 and 364,541,333 shares issued and outstanding, after deducting 47,351,497 and 46,695,470 shares held in treasury	368,536		364,541
Additional paid-in capital	4,990,102		4,881,031
Accumulated other comprehensive income	561,305		538,050
Retained earnings	4,430,738		4,318,840
Total Leucadia National Corporation shareholders' equity	10,350,681		10,102,462
Noncontrolling interest	13,043		70,591
Total equity	10,363,724		10,173,053
Total	51,407,735		47,866,781
Parent Company [Member]
LIABILITIES
Long-term debt	1,444,430		1,541,014
Subsidiaries [Member]
LIABILITIES
Long-term debt	$ 7,353,626		$ 6,639,851

[1] Securities comprise U.S. government securities segregated for regulatory purposes with a fair value of $564.7 million and $304.2 million at June 30, 2014 and December 31, 2013, respectively.