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IFRS 7 Disclosures - Schedule of Maturity of Financial Liabilities (Detail) - CAD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure Of Maturity Analysis For Financial Liabilities [line items] |  |
Long-term debt | $ 6,234 | $ 4,882
Capital instruments | 6,122 | 6,980
Derivatives | 14,289 | 10,038
Deposits from bank clients | 22,507 | 20,720
Lease liabilities | 420 |
Less than 1 year [Member] |  |
Disclosure Of Maturity Analysis For Financial Liabilities [line items] |  |
Derivatives | 2,656 | 294
Deposits from bank clients | 16,884 |
Lease liabilities | 112 |
1 to 3 years [Member] |  |
Disclosure Of Maturity Analysis For Financial Liabilities [line items] |  |
Capital instruments | 615 |
Derivatives | 1,956 | 387
Deposits from bank clients | 3,000 |
Lease liabilities | 154 |
3 to 5 years [Member] |  |
Disclosure Of Maturity Analysis For Financial Liabilities [line items] |  |
Long-term debt | 2,661 |
Derivatives | 1,146 | 379
Deposits from bank clients | 2,623 |
Lease liabilities | 93 |
Over 5 years [Member] |  |
Disclosure Of Maturity Analysis For Financial Liabilities [line items] |  |
Long-term debt | 3,573 | 3,277
Capital instruments | 5,507 |
Derivatives | 8,531 | $ 8,978
Lease liabilities | $ 61 |

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