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ACCOUNTING STANDARDS AND BASIS OF PREPARATION - Assumptions utilized to calculate ECL (Detail)
Dec. 31, 2024
Personal and Business Banking  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 30.00%
Personal and Business Banking | Inflation Rate | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 35.60%
Personal and Business Banking | Inflation Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 23.10%
Personal and Business Banking | Inflation Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 46.00%
Personal and Business Banking | Private Sector Wage | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 14.20%
Loss given default 14.20%
Personal and Business Banking | Private Sector Wage | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 12.50%
Loss given default 12.50%
Personal and Business Banking | Private Sector Wage | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 12.30%
Loss given default 12.30%
Personal and Business Banking | Private sector deposits | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 75.30%
Personal and Business Banking | Private sector deposits | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 64.10%
Personal and Business Banking | Private sector deposits | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 77.20%
Personal and Business Banking | Badlar Rate | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 30.90%
Personal and Business Banking | Badlar Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 23.20%
Personal and Business Banking | Badlar Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 40.00%
Corporate Banking | Private Sector Wage | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 14.20%
Corporate Banking | Private Sector Wage | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 12.50%
Corporate Banking | Private Sector Wage | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 12.30%
Corporate Banking | Monthly Economic Activity Estimator | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 152.00%
Corporate Banking | Monthly Economic Activity Estimator | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 152.00%
Corporate Banking | Monthly Economic Activity Estimator | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 149.00%
Corporate Banking | Badlar Rate | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 152.00%
Corporate Banking | Badlar Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 152.00%
Corporate Banking | Badlar Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 149.00%
Corporate Banking | Private sector loans | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 36.00%
Corporate Banking | Private sector loans | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 23.10%
Corporate Banking | Private sector loans | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 46.00%