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Risk Management Policy - Summary of External Credit Ratings (Details) - KZT (₸)
₸ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand ₸ 422,510 ₸ 560,850
Mandatory cash balances with NBRK 57,307 47,110
Carrying Amount 7,997,909 6,553,522
Investment securities and derivatives 1,506,354 1,379,180
Not Rated    
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand 7,205 5,007
Investment securities and derivatives 74,442 4,803
Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount 37,908 30,683
Due from Banks | Not Rated    
Disclosure of internal credit grades [line items]    
Carrying Amount 123  
Cost | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount 37,915 30,689
A- and higher    
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand 203,364 341,639
Investment securities and derivatives 48,687 33,702
A- and higher | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount 36,457  
A- and higher | Cost | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount   29,652
BBB+ to BBB-    
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand 210,591 205,881
Mandatory cash balances with NBRK 57,307 47,110
Investment securities and derivatives 1,378,268 1,336,627
BBB+ to BBB- | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount 1,328  
BBB+ to BBB- | Cost | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount   1,031
BB+ to B-    
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand 1,077 8,323
Investment securities and derivatives 4,957 4,048
BB+ to B- | Cost | Due from Banks    
Disclosure of internal credit grades [line items]    
Carrying Amount   ₸ 6
CCC+ and lower    
Disclosure of internal credit grades [line items]    
Cash and cash equivalents, excluding cash on hand ₸ 273