v3.24.3
Goodwill and other intangible assets - Additional Information (Detail)
Aug. 01, 2024
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]  
Period of discounted cash flow method for calculating value in use five-year
Caribbean Banking [member]  
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]  
Description of valuation techniques used to measure fair value less costs of disposal FVLCD using a discounted cash flow method that projects future cash flows over a 5-year period
Description of level of fair value hierarchy within which fair value measurement is categorised level 3