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Significant transactions	9 Months Ended
Significant transactions	Jul. 31, 2025
Text Block [Abstract]
Significant transactions	Note 4. Significant transactions Sale of certain banking assets in the Caribbean On October 31, 2023, CIBC Caribbean announced that it had entered into an agreement to sell its banking assets in Curaçao and Sint Maarten. The sale of banking assets in Curaçao was completed on May 24, 2024. The sale of banking assets in Sint Maarten was completed on February 7, 2025. The impact of these transactions was not material.