Fair Value Disclosures - Level 3 Rollforwards (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 29, 2024	Feb. 28, 2023
Assets:
Total gains/losses (realized and unrealized)	$ (17,900)	$ 11,700
Liabilities:
Total gains/losses (realized and unrealized)	11,900	29,500
Corporate equity securities
Assets:
Beginning balance	181,294	240,347
Total gains/losses (realized and unrealized)	(197)	17,688
Purchases	167	0
Sales	(265)	(297)
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	(7,785)	3,896
Ending balance	173,214	261,634
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(158)	17,648
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Liabilities:
Beginning Balance	676	750
Total gains/losses (realized and unrealized)	(7)	(135)
Purchases	0	0
Sales	6	13
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	0	0
Ending Balance	675	628
For instruments still held, changes in unrealized gains/(losses) included in Earnings	7	135
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Corporate debt securities
Assets:
Beginning balance	26,112	30,232
Total gains/losses (realized and unrealized)	846	(1,715)
Purchases	20,437	3,147
Sales	(513)	(7,305)
Settlements	(200)	(200)
Issuances	0	0
Net transfers into/ (out of) Level 3	(11,347)	17,634
Ending balance	35,335	41,793
For instruments still held, changes in unrealized gains/(losses) included in Earnings	801	(1,834)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Liabilities:
Beginning Balance	124	500
Total gains/losses (realized and unrealized)	0	(28)
Purchases	0	(187)
Sales	0	0
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	0	0
Ending Balance	124	285
For instruments still held, changes in unrealized gains/(losses) included in Earnings	0	28
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
CDOs and CLOs
Assets:
Beginning balance	64,862	55,824
Total gains/losses (realized and unrealized)	11,121	4,810
Purchases	16,997	36,441
Sales	(13,836)	(15,666)
Settlements	(9,539)	(8,971)
Issuances	0	0
Net transfers into/ (out of) Level 3	(238)	0
Ending balance	69,367	72,438
For instruments still held, changes in unrealized gains/(losses) included in Earnings	1,355	(2,985)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
RMBS
Assets:
Beginning balance	20,871	27,617
Total gains/losses (realized and unrealized)	(202)	(3,605)
Purchases	0	0
Sales	0	0
Settlements	(5,360)	(25)
Issuances	0	0
Net transfers into/ (out of) Level 3	(14,625)	0
Ending balance	684	23,987
For instruments still held, changes in unrealized gains/(losses) included in Earnings	32	(2,868)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
CMBS
Assets:
Beginning balance	508	839
Total gains/losses (realized and unrealized)	(35)	(353)
Purchases	0	0
Sales	0	0
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	0	0
Ending balance	473	486
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(64)	(356)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Liabilities:
Beginning Balance	840	490
Total gains/losses (realized and unrealized)	0	0
Purchases	(245)	0
Sales	350	35
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	(1)	0
Ending Balance	944	525
For instruments still held, changes in unrealized gains/(losses) included in Earnings	0	525
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Other ABS
Assets:
Beginning balance	117,661	94,677
Total gains/losses (realized and unrealized)	(3,165)	(2,940)
Purchases	11,686	13,740
Sales	(17,650)	0
Settlements	(5,834)	(5,959)
Issuances	0	0
Net transfers into/ (out of) Level 3	(442)	910
Ending balance	102,256	100,428
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(1,468)	(1,716)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Loans and other receivables
Assets:
Beginning balance	130,101	168,875
Total gains/losses (realized and unrealized)	(15,592)	446
Purchases	5,477	3,267
Sales	(24,382)	(10,160)
Settlements	(3,007)	(8)
Issuances	0	0
Net transfers into/ (out of) Level 3	(13,712)	(13,747)
Ending balance	78,885	148,673
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(17,991)	38
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Investments at fair value
Assets:
Beginning balance	130,835	161,992
Total gains/losses (realized and unrealized)	(10,691)	(2,636)
Purchases	1,627	5,637
Sales	0	(2,420)
Settlements	0	(4,710)
Issuances	0	0
Net transfers into/ (out of) Level 3	(7)	0
Ending balance	121,764	157,863
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(10,691)	(2,636)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Loans
Liabilities:
Beginning Balance	1,521	3,164
Total gains/losses (realized and unrealized)	(54)	120
Purchases	(81)	(211)
Sales	0	0
Settlements	0	0
Issuances	0	0
Net transfers into/ (out of) Level 3	80	(28)
Ending Balance	1,466	3,045
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(183)	(199)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Net derivatives
Liabilities:
Beginning Balance	50,955	59,524
Total gains/losses (realized and unrealized)	(4,833)	9,713
Purchases	0	0
Sales	245	127
Settlements	0	(537)
Issuances	0	0
Net transfers into/ (out of) Level 3	5,722	18,504
Ending Balance	52,089	87,331
For instruments still held, changes in unrealized gains/(losses) included in Earnings	4,340	(10,352)
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Other secured financings
Liabilities:
Beginning Balance	3,898	1,712
Total gains/losses (realized and unrealized)	4,482	0
Purchases	0	0
Sales	0	0
Settlements	(4,415)	0
Issuances	0	0
Net transfers into/ (out of) Level 3	0	0
Ending Balance	3,965	1,712
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(4,482)	0
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	0	0
Long-term debt
Liabilities:
Beginning Balance	744,597	661,123
Total gains/losses (realized and unrealized)	12,284	19,877
Purchases	0	0
Sales	0	0
Settlements	0	0
Issuances	21,456	203
Net transfers into/ (out of) Level 3	1,192	2,495
Ending Balance	779,529	683,698
For instruments still held, changes in unrealized gains/(losses) included in Earnings	(14,477)	15,593
For instruments still held, changes in unrealized gains/(losses) included in Other comprehensive income	$ 2,193	$ (35,470)

Fair Value, Assets Measured On Recurring Basis, Change In Unrealized Gain (Loss) Included In Other Comprehensive Income

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Fair Value, Liabilities Measured On Recurring Basis, Change In Unrealized Gain (Loss) Included In Other Comprehensive Income

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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