Annual report pursuant to Section 13 and 15(d)

TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE - Narrative (Details)

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TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE - Narrative (Details)
$ in Thousands
12 Months Ended
Mar. 31, 2022
USD ($)
issuer
Mar. 31, 2021
USD ($)
Defined Benefit Plan Disclosure [Line Items]    
Number of issuers | issuer 2  
Ministry of Finance of the Republic of Kazakhstan    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of trading securities (in percent) 10.00% 10.00%
Debt securities $ 328,951 $ 232,958
Kazakhstan Sustainability Fund JSC    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of trading securities (in percent) 10.00% 10.00%
Debt securities $ 396,680 $ 232,601