Annual report pursuant to Section 13 and 15(d)

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

v3.23.2
TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE - Schedule of present securities assets at fair value (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities $ 2,412,556 $ 1,158,377
Total available-for-sale securities, at fair value 239,053 161,364
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 2,186,786 1,148,959
Total available-for-sale securities, at fair value 176,937 161,363
Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 220,632 276
Total available-for-sale securities, at fair value 62,116 0
Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 5,138 9,142
Total available-for-sale securities, at fair value $ 0 $ 1
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 15.62% 9.09%
Total trading securities $ 1,269,879 $ 712,134
Total available-for-sale securities, at fair value $ 191,082 $ 145,836
Corporate debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, Weighted average interest rate (in percent) 15.78% 11.09%
Total available-for-sale securities, at fair value $ 191,082 $ 145,836
Corporate debt | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 1,106,584 711,539
Corporate debt | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 129,504 145,836
Corporate debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 162,895 0
Corporate debt | Significant Other Observable Inputs (Level 2) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 61,578 0
Corporate debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 400 595
Corporate debt | Significant unobservable units (Level 3) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value $ 0 $ 0
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 12.04% 13.15%
Total trading securities $ 1,029,857 $ 360,570
Total available-for-sale securities, at fair value $ 40,162 $ 12,997
Non-US sovereign debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, Weighted average interest rate (in percent) 13.64% 5.51%
Total available-for-sale securities, at fair value $ 40,162 $ 12,997
Non-US sovereign debt | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 971,762 352,274
Non-US sovereign debt | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 39,624 12,997
Non-US sovereign debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 54,319 0
Non-US sovereign debt | Significant Other Observable Inputs (Level 2) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 538 0
Non-US sovereign debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 3,776 8,296
Non-US sovereign debt | Significant unobservable units (Level 3) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value $ 0 $ 0
Corporate equity    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 0.00% 0.00%
Total trading securities $ 65,741 $ 72,354
Total available-for-sale securities, at fair value 0 $ 1
Corporate equity | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, Weighted average interest rate (in percent)   0.00%
Total available-for-sale securities, at fair value   $ 1
Corporate equity | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 62,971 71,827
Corporate equity | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value   0
Corporate equity | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 1,808 276
Corporate equity | Significant Other Observable Inputs (Level 2) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value   0
Corporate equity | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities $ 962 251
Corporate equity | Significant unobservable units (Level 3) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value   $ 1
US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 4.22% 2.35%
Total trading securities $ 45,022 $ 10,435
Total available-for-sale securities, at fair value $ 7,809 $ 2,530
US sovereign debt | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, Weighted average interest rate (in percent) 4.24% 2.17%
Total available-for-sale securities, at fair value $ 7,809 $ 2,530
US sovereign debt | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 45,022 10,435
US sovereign debt | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 7,809 2,530
US sovereign debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 0 0
US sovereign debt | Significant Other Observable Inputs (Level 2) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value 0 0
US sovereign debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 0 0
US sovereign debt | Significant unobservable units (Level 3) | Fair value, recurring    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, at fair value $ 0 $ 0
Exchange traded notes    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 0.00% 0.00%
Total trading securities $ 2,057 $ 2,884
Exchange traded notes | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 447 2,884
Exchange traded notes | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 1,610 0
Exchange traded notes | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities $ 0 $ 0