Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of present securities assets at fair value (Details)

v3.24.0.1
TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of present securities assets at fair value (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) $ 3,680,453 $ 2,412,556
Assets measured at fair value 202,497 239,053
Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 3,680,453 2,412,556
Assets measured at fair value 202,497 239,053
Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 1,962,627 2,186,786
Assets measured at fair value 103,310 176,937
Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 1,680,908 220,632
Assets measured at fair value 99,187 62,116
Level 3    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 36,918 5,138
Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 36,918 5,138
Assets measured at fair value 0 0
Non-U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 2,370,508 1,029,857
Assets measured at fair value $ 62,987 $ 40,162
Non-U.S. sovereign debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities, weighted average interest rate 12.51% 15.62%
Trading securities (including $16,220 and $556 with related parties) $ 2,370,508 $ 1,029,857
Total available-for-sale securities, weighted average interest rate 13.51% 13.64%
Assets measured at fair value $ 62,987 $ 40,162
Non-U.S. sovereign debt | Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 1,443,144 971,762
Assets measured at fair value 50,557 39,624
Non-U.S. sovereign debt | Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 927,330 54,319
Assets measured at fair value 12,430 538
Non-U.S. sovereign debt | Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 34 3,776
Assets measured at fair value 0 0
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 1,165,732 1,269,879
Assets measured at fair value $ 127,402 $ 191,082
Corporate debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities, weighted average interest rate 15.52% 12.04%
Trading securities (including $16,220 and $556 with related parties) $ 1,165,732 $ 1,269,879
Total available-for-sale securities, weighted average interest rate 16.67% 15.78%
Assets measured at fair value $ 127,402 $ 191,082
Corporate debt | Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 397,767 1,106,584
Assets measured at fair value 40,645 129,504
Corporate debt | Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 751,490 162,895
Assets measured at fair value 86,757 61,578
Corporate debt | Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 16,475 400
Assets measured at fair value 0 0
Corporate equity    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) $ 99,589 $ 65,741
Corporate equity | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities, weighted average interest rate 0.00% 0.00%
Trading securities (including $16,220 and $556 with related parties) $ 99,589 $ 65,741
Corporate equity | Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 77,577 62,971
Corporate equity | Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 1,603 1,808
Corporate equity | Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 20,409 962
US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 43,231 45,022
Assets measured at fair value $ 12,108 $ 7,809
US sovereign debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities, weighted average interest rate 4.71% 4.22%
Trading securities (including $16,220 and $556 with related parties) $ 43,231 $ 45,022
Total available-for-sale securities, weighted average interest rate 4.37% 4.24%
Assets measured at fair value $ 12,108 $ 7,809
US sovereign debt | Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 43,231 45,022
Assets measured at fair value 12,108 7,809
US sovereign debt | Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 0 0
Assets measured at fair value 0 0
US sovereign debt | Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 0 0
Assets measured at fair value 0 0
Exchange traded notes    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) $ 1,393 $ 2,057
Exchange traded notes | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities, weighted average interest rate 0.00% 0.00%
Trading securities (including $16,220 and $556 with related parties) $ 1,393 $ 2,057
Exchange traded notes | Level 1 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 908 447
Exchange traded notes | Level 2 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) 485 1,610
Exchange traded notes | Level 3 | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities (including $16,220 and $556 with related parties) $ 0 $ 0