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ACCOUNTING STANDARDS AND BASIS OF PREPARATION - Assumptions utilized to calculate ECL (Detail)
Dec. 31, 2023
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 205.60%
Personal and Business Banking | Inflation Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 173.90%
Personal and Business Banking | Inflation Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 301.70%
Personal and Business Banking | Private Sector Wage | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default (0.20%)
Loss given default (0.20%)
Personal and Business Banking | Private Sector Wage | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 2.90%
Loss given default 2.90%
Personal and Business Banking | Private Sector Wage | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default (5.00%)
Loss given default (5.00%)
Personal and Business Banking | Monetary Policy Rate | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 105.00%
Personal and Business Banking | Monetary Policy Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 94.50%
Personal and Business Banking | Monetary Policy Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 154.10%
Corporate Banking | Private Sector Wage | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default (0.20%)
Corporate Banking | Private Sector Wage | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 2.90%
Corporate Banking | Private Sector Wage | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default (5.00%)
Corporate Banking | Monthly Economic Activity Estimator | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 145.00%
Corporate Banking | Monthly Economic Activity Estimator | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 150.00%
Corporate Banking | Monthly Economic Activity Estimator | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Probably of default 141.00%
Corporate Banking | Exchange Rate | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 2011.00%
Corporate Banking | Exchange Rate | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 1857.00%
Corporate Banking | Exchange Rate | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 3374.00%
Corporate Banking | Private Sector Loans | Scenario one [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 245.20%
Corporate Banking | Private Sector Loans | Scenario Two [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 109.40%
Corporate Banking | Private Sector Loans | Scenario Three [member]  
Disclosure of Primary Macroeconomic Drivers of Credit Losses [line items]  
Loss given default 193.70%