Derivative Financial Instruments - Remaining Contract Maturity of Fair Value of OTC Derivative Assets and Liabilities (Details)
$ in Thousands
May 31, 2022
USD ($)
OTC Derivative Assets [Abstract]  
0 – 12 Months $ 303,712
1 – 5 Years 398,188
Greater Than 5 Years 34,104
Cross-Maturity Netting (142,503)
Total OTC derivative assets, net of cross-maturity netting 593,501
Cross product counterparty netting (19,797)
Total OTC derivative assets included in Financial instruments owned 573,704
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 612,279
1 – 5 Years 871,651
Greater Than 5 Years 460,143
Cross-Maturity Netting (142,503)
Total OTC derivative liabilities, net of cross-maturity netting 1,801,570
Cross product counterparty netting (19,797)
Total OTC derivative liabilities included in Financial instruments sold, not yet purchased 1,781,773
Exchange traded derivative assets, with fair value 249,900
Cash collateral received 415,500
Exchange traded derivative liabilities, with fair value 25,500
Cash collateral pledged 571,600
Equity options and forwards  
OTC Derivative Assets [Abstract]  
0 – 12 Months 15,292
1 – 5 Years 3,514
Greater Than 5 Years 0
Cross-Maturity Netting (14,945)
Total OTC derivative assets, net of cross-maturity netting 3,861
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 78,364
1 – 5 Years 393,463
Greater Than 5 Years 22,849
Cross-Maturity Netting (14,945)
Total OTC derivative liabilities, net of cross-maturity netting 479,731
Credit default swaps  
OTC Derivative Assets [Abstract]  
0 – 12 Months 0
1 – 5 Years 8
Greater Than 5 Years 4,177
Cross-Maturity Netting (8)
Total OTC derivative assets, net of cross-maturity netting 4,177
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 0
1 – 5 Years 594
Greater Than 5 Years 8,717
Cross-Maturity Netting (8)
Total OTC derivative liabilities, net of cross-maturity netting 9,303
Total return swaps  
OTC Derivative Assets [Abstract]  
0 – 12 Months 69,436
1 – 5 Years 39,246
Greater Than 5 Years 46
Cross-Maturity Netting (9,812)
Total OTC derivative assets, net of cross-maturity netting 98,916
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 387,018
1 – 5 Years 122,606
Greater Than 5 Years 100
Cross-Maturity Netting (9,812)
Total OTC derivative liabilities, net of cross-maturity netting 499,912
Foreign currency forwards, swaps and options  
OTC Derivative Assets [Abstract]  
0 – 12 Months 120,957
1 – 5 Years 3,836
Greater Than 5 Years 284
Cross-Maturity Netting (3,128)
Total OTC derivative assets, net of cross-maturity netting 121,949
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 81,886
1 – 5 Years 3,192
Greater Than 5 Years 49
Cross-Maturity Netting (3,128)
Total OTC derivative liabilities, net of cross-maturity netting 81,999
Fixed income forwards  
OTC Derivative Assets [Abstract]  
0 – 12 Months 30,634
1 – 5 Years 0
Greater Than 5 Years 0
Cross-Maturity Netting 0
Total OTC derivative assets, net of cross-maturity netting 30,634
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 845
1 – 5 Years 0
Greater Than 5 Years 0
Cross-Maturity Netting 0
Total OTC derivative liabilities, net of cross-maturity netting 845
Interest rate swaps, options and forwards  
OTC Derivative Assets [Abstract]  
0 – 12 Months 67,393
1 – 5 Years 351,584
Greater Than 5 Years 29,597
Cross-Maturity Netting (114,610)
Total OTC derivative assets, net of cross-maturity netting 333,964
OTC Derivative Liabilities [Abstract]  
0 – 12 Months 64,166
1 – 5 Years 351,796
Greater Than 5 Years 428,428
Cross-Maturity Netting (114,610)
Total OTC derivative liabilities, net of cross-maturity netting $ 729,780