Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of maturity of trading and available-for-sale securities (Details)

v3.25.0.1
TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of maturity of trading and available-for-sale securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Mar. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 418,614 $ 216,621
Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 217,102 27,016
Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 180,272 173,568
U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 21,240 16,037
Up to 1 year    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 136,643 73,254
Up to 1 year | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 62,783 7,839
Up to 1 year | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 73,860 65,415
Up to 1 year | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 0 0
1-5 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 177,518 56,743
1-5 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 97,050 7,310
1-5 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 60,386 44,374
1-5 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 20,082 5,059
5-10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 73,246 75,103
5-10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 35,294 5,797
5-10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 37,952 59,553
5-10 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 0 9,753
More than 10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 31,207 11,521
More than 10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 21,975 6,070
More than 10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 8,074 4,226
More than 10 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 1,158 $ 1,225