Consolidated Statements Of Financial Condition (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 3,140,421		$ 145,960
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	3,728,742	[1]
Financial instruments owned, including securities pledged of $14,174,814 and $406,828:
Trading assets, at fair value	16,413,535		1,077,172
Available for sale securities	2,794,516		3,356,992
Total financial instruments owned	19,208,051		4,434,164
Investments in managed funds	59,976
Loans to and investments in related parties	1,240,623		807,474
Securities borrowed	5,315,488
Securities purchased under agreements to resell	3,578,366
Securities received as collateral	25,338
Receivables from brokers, dealers and clearing organizations	2,841,195		6,824
Receivables from customers of brokerage operations	1,045,251
Property, equipment and leasehold improvements, net	933,073		857,360
Intangible assets, net	1,087,700		829,831
Goodwill	1,738,744		24,195
Deferred tax asset, net	1,822,135		1,214,615
Other assets	1,584,191		1,028,695
Total	47,349,294		9,349,118
LIABILITIES
Short-term borrowing	100,000
Trading liabilities, at fair value	9,766,876
Securities loaned	1,902,687
Securities sold under agreements to repurchase	8,413,880		391,705
Obligation to return securities received as collateral	25,338
Payables to brokers, dealers and clearing organizations	1,792,306		854
Payables to customers of brokerage operations	5,450,781
Trade payables, expense accruals and other liabilities	1,400,761		588,580
Long-term debt	7,753,948		1,358,695
Total liabilities	36,606,577		2,339,834
MEZZANINE EQUITY
Redeemable noncontrolling interests in subsidiary	219,762		241,649
Mandatorily redeemable convertible preferred shares	125,000
EQUITY
Common shares, par value $1 per share, authorized 600,000,000 shares; 363,940,993 and 244,582,588 shares issued and outstanding, after deducting 47,011,534 and 47,006,711 shares held in treasury	363,941		244,583
Additional paid-in capital	4,846,279		1,577,528
Accumulated other comprehensive income	506,870		705,129
Retained earnings	4,324,471		4,240,028
Total Leucadia National Corporation shareholders' equity	10,041,561		6,767,268
Noncontrolling interest	356,394		367
Total equity	10,397,955		6,767,635
Total	$ 47,349,294		$ 9,349,118

[1] Includes U.S. government securities segregated for regulatory purposes with a fair value of $357.2 million.