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TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 USD ($) issuer | Mar. 31, 2023 USD ($) issuer
Defined Benefit Plan Disclosure [Line Items] |  |
Number of issuers | issuer | 2 | 2
Other than temporary impairment, debt securities | $ 413 | $ 390
Kazakhstan Sustainability Fund JSC |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of trading securities (in percent) | 10.00% | 10.00%
Debt Securities | $ 669,756 | $ 834,917
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 | $ 2,394,541 | $ 1,015,161

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- Definition Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 9A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-9A Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 + Details
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