Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Net cash flows from operating activities:
Net income (loss)	$ 209,280	$ 218,649
Adjustments to reconcile net income to net cash used for operations:
Deferred income tax provision	101,476	124,099
Depreciation and amortization of property, equipment and leasehold improvements	120,705	92,189
Other amortization	8,309	3,956
Share-based compensation	71,852	87,493
Provision for doubtful accounts	18,626	10,131
Net securities gains	(24,418)	(20,903)
Income related to associated companies	(182,192)	(157,937)
Distributions from associated companies	185,369	130,930
Net (gains) losses related to property and equipment, and other assets	6,667	(29,584)
Gain on disposal of discontinued operations	(2,000)	(12,592)
Change in estimated litigation reserve	(96,500)	0
Net change in:
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	2,538,334	316,049
Trading assets	(795,615)	(2,781,472)
Investments in managed funds	(296,453)	(82,776)
Securities borrowed	(852,183)	(908,113)
Securities purchased under agreements to resell	(351,875)	(820,235)
Receivables from brokers, dealers and clearing organizations	97,622	(298,153)
Receivables from customers of securities operations	(57,661)	(612,457)
Other receivables	(157,478)	(102,453)
Other assets	(69,354)	(139,909)
Trading liabilities	644,008	2,634,241
Securities loaned	1,049,172	(40,086)
Securities sold under agreements to repurchase	176,960	(252,215)
Payables to brokers, dealers and clearing organizations	192,867	638,448
Payables to customers of securities operations	(3,454,703)	730,493
Trade payables, expense accruals and other liabilities	(200,390)	40,912
Other	(60,693)	(32,979)
Net cash used for operating activities	(1,180,268)	(1,264,274)
Net cash flows from investing activities:
Acquisitions of property, equipment and leasehold improvements, and other assets	(212,589)	(470,781)
Proceeds from disposals of property and equipment, and other assets	10,806	49,628
Proceeds from disposal of discontinued operations, net of expenses and cash of operations sold	0	223,373
Acquisitions, net of cash acquired	0	(59,378)
Cash paid and cash of real estate operations sold to HomeFed Corporation	0	(19,730)
Advances on notes, loans and other receivables	(283,000)	(8,500)
Collections on notes, loans and other receivables	134,556	19,240
Loans to and investments in associated companies	(1,134,067)	(1,320,588)
Capital distributions and loan repayment from associated companies	1,123,480	1,301,118
Deconsolidation of asset management entities	(16,512)	(207,965)
Purchases of investments (other than short-term)	(806,023)	(1,473,934)
Proceeds from maturities of investments	324,415	920,949
Proceeds from sales of investments	1,800,227	1,542,798
Other	2,541	6,212
Net cash provided by investing activities	943,834	502,442
Net cash flows from financing activities:
Issuance of debt, net of issuance costs	215,175	1,001,510
Change in short-term borrowings	0	80,000
Reduction of debt	(770,671)	(394,985)
Net proceeds from other secured financings	265,286	494,627
Issuance of common shares	1,031	1,295
Net distributions to redeemable noncontrolling interests	0	(2,765)
Distributions to noncontrolling interests	0	(2,152)
Contributions from noncontrolling interests	1,530	44,557
Purchase of common shares for treasury	(121,619)	(54,190)
Dividends paid	(69,655)	(69,785)
Other	385	1,640
Net cash provided by (used for) financing activities	(478,538)	1,099,752
Effect of foreign exchange rate changes on cash	(2,502)	2,363
Net increase (decrease) in cash and cash equivalents	(717,474)	340,283
Cash and cash equivalents at January 1, including cash classified as assets of discontinued operations	4,276,775	3,907,595
Cash and cash equivalents at September 30, including cash classified as assets of discontinued operations	3,559,301	4,247,878
Supplemental disclosures of cash flow information:
Interest	706,472	833,594
Income tax payments (refunds), net	5,388	5,475
Non-cash financing activities:
Issuance of common shares for debt conversion	$ 0	$ 97,546