Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Net cash flows from operating activities:
Net income	$ 582,549	$ 112,021
Adjustments to reconcile net income to net cash used for operations:
Deferred income tax provision	9,149	12,237
Depreciation and amortization of real estate, property, equipment and leasehold improvements	36,012	36,415
Other amortization	6,321	2,971
Stock-based compensation	20,678	9,947
Provision for doubtful accounts	3,267	10,870
(Income) loss related to associated companies	(77,338)	39,096
Distributions from associated companies	19,345	49,646
Net losses related to property and equipment, and other assets	165	34,193
Net change in:
Securities deposited with clearing and depository organizations	(84,307)	(296,514)
Financial instruments owned, at fair value	(957,696)	(1,526,004)
Securities borrowed	(211,177)	910,494
Securities purchased under agreements to resell	(1,576,329)	(614,635)
Receivables from brokers, dealers and clearing organizations	(581,609)	(1,433,478)
Receivables from customers of securities operations	(575,823)	(48,710)
Other receivables	(101,570)	(28,454)
Other assets	(45,883)	(231,104)
Financial instruments sold, not yet purchased, at fair value	2,339,208	(635,893)
Securities loaned	704,075	371,286
Securities sold under agreements to repurchase	(1,114,857)	909,654
Payables to brokers, dealers and clearing organizations	768,358	1,569,726
Payables to customers of securities operations	(161,557)	(51,154)
Lease liabilities	(12,811)	(17,959)
Trade payables, expense accruals and other liabilities	(387,334)	(199,966)
Other	(96,774)	97,232
Net cash used for operating activities	(1,495,938)	(918,083)
Net cash flows from investing activities:
Acquisitions of property, equipment and leasehold improvements, and other assets	(24,243)	(60,982)
Advances on notes, loans and other receivables	(137,527)	(239,241)
Collections on notes, loans and other receivables	74,573	229,476
Loans to and investments in associated companies	(914,484)	(864,422)
Capital distributions and loan repayments from associated companies	969,817	883,299
Other	(476)	2,560
Net cash used for investing activities	(32,340)	(49,310)
Net cash flows from financing activities:
Issuance of debt, net of issuance costs	431,811	759,478
Repayment of debt	(396,556)	(555,076)
Net change in other secured financings	1,219,585	(150,485)
Net change in bank overdrafts	(4,706)	(34,518)
Contributions from noncontrolling interests	80	17,100
Purchase of common shares for treasury	(130,097)	(310,187)
Dividends paid	(49,768)	(42,793)
Other	(696)	316
Net cash provided by (used for) financing activities	1,069,653	(316,165)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	3,886	(2,927)
Net decrease in cash, cash equivalents and restricted cash	(454,739)	(1,286,485)
Cash, cash equivalents and restricted cash at beginning of period	9,664,972	8,480,435
Cash, cash equivalents and restricted cash at end of period	$ 9,210,233	$ 7,193,950