CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Cash flows from operating activities:
Net earnings (loss)	$ (60,819)	$ 114,020
Adjustments to reconcile net earnings (loss) to net cash used in operating activities:
Depreciation and amortization	1,843	252
Income on loans to and investments in related parties	(5,605)	(26,264)
Distributions received on investments in related parties	0	2,240
Other adjustments	(38,250)	(9,435)
Net change in assets and liabilities:
Securities deposited with clearing and depository organizations	64,861	13
Receivables:
Brokers, dealers and clearing organizations	(1,314,557)	(670,299)
Customers	(33,216)	(338,876)
Fees, interest and other	71,275	(1,211)
Securities borrowed	427,310	856,236
Financial instruments owned	(1,102,846)	566,847
Securities purchased under agreements to resell	716,157	(609,225)
Other assets	50,756	(145,374)
Payables:
Brokers, dealers and clearing organizations	814,852	(329,027)
Customers	222,603	114,834
Securities loaned	(476,725)	(295,666)
Financial instruments sold, not yet purchased	1,442,571	375,034
Securities sold under agreements to repurchase	(418,052)	525,137
Accrued expenses and other liabilities	(679,748)	(241,753)
Net cash used in operating activities	(317,590)	(112,517)
Cash flows from investing activities:
Contributions to loans to and investments in related parties	(1,778,386)	(1,134,714)
Distributions from loans to and investments in related parties	1,639,300	1,140,234
Net payments on premises and equipment	(16,953)	(22,396)
Cash received from contingent consideration	0	1,250
Net cash used in investing activities	(156,039)	(15,626)
Cash flows from financing activities:
Proceeds from short-term borrowings	275,000	0
Payments on short-term borrowings	(248,323)	(107,113)
Proceeds from issuance of long-term debt, net of issuance costs	1,138,705	792,376
Repayment of long-term debt	(334,978)	0
Dividend distribution	(200,000)	0
Net payments on other secured financings	(19,752)	(161,456)
Net change in bank overdrafts	2,360	4,195
Net cash provided by financing activities	613,012	528,002
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2,528	(558)
Net increase in cash, cash equivalents and restricted cash	141,911	399,301
Cash, cash equivalents and restricted cash at beginning of period	5,642,776	4,286,513
Cash, cash equivalents and restricted cash at end of period	5,784,687	4,685,814
Cash paid (received) during the period for
Interest	314,921	238,938
Income taxes, net	$ (2,184)	$ 477