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)

v3.23.1
TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE - Schedule of present securities assets at fair value (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 1,080,982 $ 587,546
Fair value of equity securities 1 1
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 1,071,565 568,513
Fair value of equity securities 0 0
Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 275 0
Fair value of equity securities 0 0
Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 9,142 19,033
Fair value of equity securities $ 1 $ 1
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 9.61% 9.22%
Trading securities $ 662,416 $ 301,899
Corporate debt | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 661,821 301,539
Corporate debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 0 0
Corporate debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 595 $ 360
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 13.11% 8.06%
Trading securities $ 342,786 $ 239,630
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]    
Trading securities 334,491 239,630
Non-US sovereign debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 0 0
Non-US sovereign debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 8,296 $ 0
Corporate equity    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 0.00% 0.00%
Trading securities $ 64,023 $ 39,279
Corporate equity | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 63,496 20,606
Corporate equity | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 275 0
Corporate equity | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 251 $ 18,673
US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average interest rate (in percent) 2.36% 1.68%
Trading securities $ 10,306 $ 4,661
US sovereign debt | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 10,306 4,661
US sovereign debt | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 0 0
US sovereign debt | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 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%
Trading securities $ 1,451 $ 2,077
Exchange traded notes | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 1,451 2,077
Exchange traded notes | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities 0 0
Exchange traded notes | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Trading securities $ 0 $ 0
Equity securities    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total available-for-sale securities, Weighted average interest rate (in percent) 0.00% 0.00%
Fair value of equity securities $ 1 $ 1
Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of equity securities 0 0
Equity securities | Significant Other Observable Inputs (Level 2)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of equity securities 0 0
Equity securities | Significant unobservable units (Level 3)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of equity securities $ 1 $ 1