Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Cash flows from operating activities:
Net earnings (loss)	$ (166,769)	$ 12,553
Adjustments to reconcile net earnings (loss) to net cash used in operating activities:
Depreciation and amortization	(2,735)	3,327
(Income) loss on loans to and investments in related parties	23,416	(20,689)
Distributions received on investments in related parties	0	9,765
Other adjustments	8,670	(62,770)
Net change in assets and liabilities:
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	70,939	257,319
Receivables:
Brokers, dealers and clearing organizations	(211,449)	(39,313)
Customers	13,863	(93,823)
Fees, interest and other	(15,898)	(14,530)
Securities borrowed	(385,463)	285,891
Financial instruments owned	2,830,082	(471,101)
Investments in managed funds	1,551	19,686
Securities purchased under agreements to resell	298,260	179,290
Other assets	(392,950)	(107,908)
Payables:
Brokers, dealers and clearing organizations	(1,477,131)	384,163
Customers	(180,980)	(1,481,640)
Securities loaned	(295,559)	575,750
Financial instruments sold, not yet purchased	750,826	(966,190)
Securities sold under agreements to repurchase	(1,721,276)	654,705
Accrued expenses and other liabilities	(247,374)	(494,018)
Net cash used in operating activities	(1,099,977)	(1,369,533)
Cash flows from investing activities:
Contributions to loans to and investments in related parties	(141,735)	(600,844)
Distributions from loans to and investments in related parties	188,108	558,335
Net payments on premises and equipment	(20,958)	(17,381)
Payment on purchase of aircraft	(27,500)	0
Deconsolidation of asset management entity	(39)	0
Cash received from contingent consideration	466	996
Net cash used in investing activities	(1,658)	(58,894)
Cash flows from financing activities:
Excess tax benefits from the issuance of share-based awards	162	245
Proceeds from short-term borrowings	1,397,552	3,385,000
Payments on short-term borrowings	(1,396,326)	(2,985,002)
Proceeds from secured credit facility	0	611,000
Payments on secured credit facility	0	(576,000)
Net proceeds from other secured financings	134,435	254,778
Net proceeds from issuance of structured notes, net of issuance costs	43,538	0
Net proceeds from issuance of secured notes, net of issuance costs	22,196	0
Net cash provided by financing activities	201,557	690,021
Effect of exchange rate changes on cash and cash equivalents	(10,448)	(1,597)
Net decrease in cash and cash equivalents	(910,526)	(740,003)
Cash and cash equivalents at beginning of period	3,510,163	4,079,968
Cash and cash equivalents at end of period	2,599,637	3,339,965
Cash paid (received) during the period for:
Interest	188,217	180,068
Income taxes, net	$ (7,450)	$ 701