v3.25.1
SECURITIES REPURCHASE AGREEMENT OBLIGATIONS - Schedule of trading securities including collateralized securities subject to repurchase agreements (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations $ 1,418,443 $ 2,756,596
Up to 30 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations 1,328,959 2,482,004
30-90 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations $ 89,484 $ 274,592
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average interest rate (in percent) 15.74% 13.78%
Securities repurchase agreement obligations $ 907,304 $ 1,805,028
Non-US sovereign debt | Up to 30 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations 904,940 1,545,080
Non-US sovereign debt | 30-90 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations $ 2,364 $ 259,948
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average interest rate (in percent) 15.95% 13.84%
Securities repurchase agreement obligations $ 510,692 $ 938,396
Corporate debt | Up to 30 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations 423,572 923,752
Corporate debt | 30-90 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations $ 87,120 $ 14,644
US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average interest rate (in percent)   3.06%
Securities repurchase agreement obligations   $ 13,172
US sovereign debt | Up to 30 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations   13,172
US sovereign debt | 30-90 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations   $ 0
Corporate equity    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average interest rate (in percent) 3.25% 0.00%
Securities repurchase agreement obligations $ 447 $ 0
Corporate equity | Up to 30 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations 447 0
Corporate equity | 30-90 days    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Securities repurchase agreement obligations $ 0 $ 0