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Subordinated Debt - Summary of Group's Liabilities Arising from Financing Activities (Details) - KZT (₸)
₸ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about borrowings [line items]      
Debt securities issued ₸ 51,050 ₸ 99,468 ₸ 140,378
Financing cash flows (48,769) (41,261)  
Changes in amortized cost 351 351  
Subordinated Debt Securities [Member]      
Disclosure of detailed information about borrowings [line items]      
Debt securities issued 62,416 62,369 ₸ 67,608
Financing cash flows   (5,300)  
Changes in amortized cost ₸ 47 ₸ 61