Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Cash flows from operating activities:
Net earnings	$ 15,406	$ 95,329	$ 160,960
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	(2,365)	15,236	691
Goodwill impairment	0	0	54,000
Deferred income taxes	(14,013)	88,796	122,195
Income on loans to and investments in related parties	(17,184)	(75,717)	(90,243)
Distributions received on investments in related parties	38,180	76,681	53,985
Other adjustments	(32,711)	(97,804)	(78,064)
Net change in assets and liabilities:
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	(107,771)	2,691,028	166,108
Receivables:
Brokers, dealers and clearing organizations	(477,273)	576,832	11,872
Customers	348,055	57,837	(294,412)
Fees, interest and other	(54,366)	541	(12,062)
Securities borrowed	(805,779)	(127,060)	(1,497,438)
Financial instruments owned	2,529,114	2,003,978	(2,243,053)
Investments in managed funds	(138,572)	15,498	13,473
Securities purchased under agreements to resell	(112,777)	53,817	(200,568)
Other assets	(173,616)	(63,110)	(146,114)
Payables:
Brokers, dealers and clearing organizations	584,426	471,661	968,615
Customers	(483,188)	(3,455,080)	1,089,423
Securities loaned	(122,946)	385,929	95,607
Financial instruments sold, not yet purchased	1,753,647	(2,043,319)	1,832,930
Securities sold under agreements to repurchase	(3,144,433)	(650,795)	(84,303)
Accrued expenses and other liabilities	296,067	(259,665)	48,485
Net cash used in operating activities	(122,099)	(239,387)	(27,913)
Cash flows from investing activities:
Contributions to loans to and investments in related parties	(538,186)	(1,438,675)	(2,786,394)
Distributions from loans to and investments in related parties	689,226	1,384,944	2,751,384
Net payments on premises and equipment	(75,772)	(68,813)	(110,536)
Payment on purchase of aircraft	(27,500)	0	0
Proceeds from sale of aircraft	29,450	0	0
Deconsolidation of asset management entity	(77)	(16,512)	(137,856)
Cash received from contingent consideration	2,617	4,444	6,253
Net cash provided by (used in) investing activities	79,758	(134,612)	(277,149)
Cash flows from financing activities:
Excess tax benefits from the issuance of share-based awards	489	749	1,921
Proceeds from short-term borrowings	15,313,383	17,263,217	18,965,163
Payments on short-term borrowings	(15,108,501)	(16,964,558)	(18,965,163)
Proceeds from secured credit facility	0	903,000	2,819,000
Payments on secured credit facility	0	(1,073,000)	(2,849,000)
Net (payments on) proceeds from other secured financings	(7,333)	157,085	371,113
Net proceeds from issuance of long-term debt, net of issuance costs	299,779	0	681,222
Repayment of long-term debt	(373,246)	(500,000)	(250,000)
Net change in bank overdrafts	(46,536)	29,295	20,974
Proceeds from contributions of noncontrolling interests	9,390	0	39,075
Payments on distributions to noncontrolling interests	(563)	(4,982)	0
Net cash provided by (used in) financing activities	86,862	(189,194)	834,305
Effect of changes in exchange rates on cash and cash equivalents	(25,615)	(6,612)	(10,394)
Net increase (decrease) in cash and cash equivalents	18,906	(569,805)	518,849
Cash and cash equivalents at beginning of period	3,510,163	4,079,968	3,561,119
Cash and cash equivalents at end of period	3,529,069	3,510,163	4,079,968
Cash paid (received) during the period for:
Interest	859,466	859,815	922,194
Income taxes, net	$ (6,410)	$ (683)	$ 120,703