CUSTOMER LIABILITIES - Narrative (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Mar. 31, 2026 |
|---|---|---|
| Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Line Items] | ||
| Customer liabilities | $ 7,048,800 | $ 7,103,984 |
| Nonrelated Party | Revenue benchmark | Customer concentration risk | ||
| Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Line Items] | ||
| Customer liabilities | 1,266,794 | 2,368,911 |
| JSC Kazakhstan Deposit Insurance Fund | ||
| Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Line Items] | ||
| Insured bank deposits, price per client | 42 | |
| Insured bank deposits | $ 927,802 | $ 819,475 |