Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Cash flows from operating activities:
Net earnings (loss)	$ 114,020	$ (166,769)
Adjustments to reconcile net earnings (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	252	(2,735)
(Income) loss on loans to and investments in related parties	(26,264)	23,416
Distributions received on investments in related parties	2,240	0
Other adjustments	(9,435)	8,670
Net change in assets and liabilities:
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	152,001	70,939
Receivables:
Brokers, dealers and clearing organizations	(670,299)	(211,449)
Customers	(338,876)	13,863
Fees, interest and other	(1,211)	(15,898)
Securities borrowed	856,236	(385,463)
Financial instruments owned	551,101	2,830,082
Investments in managed funds	15,746	1,551
Securities purchased under agreements to resell	(609,225)	298,260
Other assets	(145,374)	(392,788)
Payables:
Brokers, dealers and clearing organizations	(329,027)	(1,477,131)
Customers	114,834	(180,980)
Securities loaned	(295,666)	(295,559)
Financial instruments sold, not yet purchased	375,034	750,826
Securities sold under agreements to repurchase	525,137	(1,721,276)
Accrued expenses and other liabilities	(241,753)	(205,396)
Net cash provided by (used in) operating activities	39,471	(1,057,837)
Cash flows from investing activities:
Contributions to loans to and investments in related parties	(1,134,714)	(141,735)
Distributions from loans to and investments in related parties	1,140,234	188,108
Net payments on premises and equipment	(22,396)	(20,958)
Payment on purchase of aircraft	0	(27,500)
Deconsolidation of asset management entity	0	(39)
Cash received from contingent consideration	1,250	466
Net cash used in investing activities	(15,626)	(1,658)
Cash flows from financing activities:
Proceeds from short-term borrowings	9,682,590	1,397,552
Payments on short-term borrowings	(9,789,703)	(1,396,326)
Net (payments on) proceeds from other secured financings	(161,456)	134,435
Net proceeds from issuance of long-term debt, net of issuance costs	792,376	65,734
Net change in bank overdrafts	4,195	(41,978)
Net cash provided by financing activities	528,002	159,417
Effect of exchange rate changes on cash and cash equivalents	(535)	(10,448)
Net increase (decrease) in cash and cash equivalents	551,312	(910,526)
Cash and cash equivalents at beginning of period	3,529,069	3,510,163
Cash and cash equivalents at end of period	4,080,381	2,599,637
Cash paid (received) during the period for:
Interest	238,938	188,217
Income taxes, net	$ 477	$ (7,450)