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Investment Securities - Analysis of the Carrying Value of Investment Securities (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2025 | Oct. 31, 2024
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 149,948 | $ 152,832
Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 123,732 | 118,226
Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 44,376 | 43,922
U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 82,866 | 83,392
Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 5,361 | 5,678
Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 17,345 | 19,840
Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 124,130 | 121,388
Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 23,110 | $ 21,540
Yield % | [1] | 3.50% | 3.90%
Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 20,843 | $ 17,525
Yield % | [1] | 3.60% | 3.70%
Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 49,036 | $ 46,376
Yield % | [1] | 3.80% | 3.70%
Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 27,726 | $ 29,286
Yield % | [1] | 4.50% | 4.40%
Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 3,017 | $ 3,499
Yield % | [1] | 4.00% | 4.10%
Fair Value Through Other Comprehensive Income [member] | Common shares [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 398 | $ 3,162
Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 23,722 | 29,412
Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 15,758 | $ 18,440
Yield % | [1] | 4.40% | 4.60%
Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 2,281 | $ 2,041
Yield % | [1] | 3.00% | 5.20%
Financial assets at amortised cost, class [member] | Canadian federal and provincial government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 5,467 | $ 8,721
Yield % | [1] | 3.70% | 3.60%
Financial assets at amortised cost, class [member] | Corporate debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 216 | $ 210
Yield % | [1] | 5.50% | 5.80%
Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 149,948 | $ 152,832
Fair value through profit and loss [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 23 | 28
Fair value through profit and loss [member] | Equity instruments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 2,073 | 2,004
Within three months [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 6,631 | 11,535
Within three months [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 6,089 | 10,598
Within three months [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,611 | 2,725
Within three months [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,144 | 2,696
Within three months [member] | Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 234 | 948
Within three months [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 3,642 | 5,166
Within three months [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 6,089 | 10,598
Within three months [member] | Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 774 | $ 1,873
Yield % | [1] | 4.00% | 4.40%
Within three months [member] | Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 578 | $ 213
Yield % | [1] | 2.60% | 1.80%
Within three months [member] | Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 694 | $ 2,308
Yield % | [1] | 3.90% | 2.30%
Within three months [member] | Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 3,884 | $ 6,203
Yield % | [1] | 2.80% | 2.60%
Within three months [member] | Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 159 | $ 1
Yield % | [1] | 6.00% | 10.70%
Within three months [member] | Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 540 | $ 935
Within three months [member] | Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  |  | $ 1
Yield % | [1] |  | 4.80%
Within three months [member] | Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 246 | $ 324
Yield % | [1] | 1.90% | 3.60%
Within three months [member] | Financial assets at amortised cost, class [member] | Canadian federal and provincial government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 294 | $ 610
Yield % | [1] | 1.20% | 4.60%
Within three months [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 6,631 | $ 11,535
Within three months [member] | Fair value through profit and loss [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 2 | 2
Three to twelve months [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 24,185 | 17,502
Three to twelve months [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 21,870 | 14,666
Three to twelve months [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 6,617 | 6,799
Three to twelve months [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 11,858 | 3,894
Three to twelve months [member] | Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,131 | 1,215
Three to twelve months [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 4,579 | 5,594
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 21,870 | 14,666
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 3,596 | $ 4,054
Yield % | [1] | 3.10% | 4.20%
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 2,200 | $ 1,882
Yield % | [1] | 2.30% | 3.30%
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 10,216 | $ 2,209
Yield % | [1] | 3.00% | 3.50%
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 5,054 | $ 6,069
Yield % | [1] | 4.20% | 3.60%
Three to twelve months [member] | Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 804 | $ 452
Yield % | [1] | 4.00% | 6.10%
Three to twelve months [member] | Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 2,315 | $ 2,836
Three to twelve months [member] | Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 31 | $ 48
Yield % | [1] | 3.90% | 4.50%
Three to twelve months [member] | Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 1,173 | $ 689
Yield % | [1] | 3.50% | 8.60%
Three to twelve months [member] | Financial assets at amortised cost, class [member] | Canadian federal and provincial government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 1,110 | $ 2,099
Yield % | [1] | 2.60% | 2.10%
Three to twelve months [member] | Financial assets at amortised cost, class [member] | Corporate debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 1 |
Yield % | [1] | 6.80% |
Three to twelve months [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 24,185 | $ 17,502
One to five years [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 67,146 | 72,545
One to five years [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 62,365 | 65,724
One to five years [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 19,080 | 23,034
One to five years [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 38,137 | 40,362
One to five years [member] | Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 3,052 | 3,139
One to five years [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 6,877 | 6,010
One to five years [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 62,365 | 65,724
One to five years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 11,408 | $ 11,699
Yield % | [1] | 3.50% | 3.90%
One to five years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 6,841 | $ 8,190
Yield % | [1] | 3.60% | 3.70%
One to five years [member] | Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 28,156 | $ 30,098
Yield % | [1] | 4.00% | 3.60%
One to five years [member] | Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 14,192 | $ 12,969
Yield % | [1] | 4.90% | 5.40%
One to five years [member] | Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 1,768 | $ 2,768
Yield % | [1] | 3.80% | 3.70%
One to five years [member] | Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 4,760 | $ 6,795
One to five years [member] | Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 88 | $ 116
Yield % | [1] | 3.70% | 4.20%
One to five years [member] | Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 750 | $ 858
Yield % | [1] | 2.50% | 3.20%
One to five years [member] | Financial assets at amortised cost, class [member] | Canadian federal and provincial government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 3,853 | $ 5,740
Yield % | [1] | 4.10% | 4.00%
One to five years [member] | Financial assets at amortised cost, class [member] | Corporate debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 69 | $ 81
Yield % | [1] | 5.40% | 6.40%
One to five years [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 67,146 | $ 72,545
One to five years [member] | Fair value through profit and loss [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 21 | 26
Five to ten years [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 25,744 | 19,677
Five to ten years [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 25,425 | 19,253
Five to ten years [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 15,402 | 8,491
Five to ten years [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 7,889 | 8,471
Five to ten years [member] | Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 838 | 332
Five to ten years [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,615 | 2,383
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 25,425 | 19,253
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 6,505 | $ 3,072
Yield % | [1] | 3.50% | 3.50%
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 11,091 | $ 6,811
Yield % | [1] | 3.80% | 3.90%
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 3,240 | $ 5,387
Yield % | [1] | 3.70% | 4.10%
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 4,312 | $ 3,715
Yield % | [1] | 5.20% | 5.00%
Five to ten years [member] | Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 277 | $ 268
Yield % | [1] | 4.50% | 4.50%
Five to ten years [member] | Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 319 | $ 424
Five to ten years [member] | Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 27 | $ 13
Yield % | [1] | 3.50% | 4.00%
Five to ten years [member] | Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 82 | $ 139
Yield % | [1] | 3.80% | 4.00%
Five to ten years [member] | Financial assets at amortised cost, class [member] | Canadian federal and provincial government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 210 | $ 272
Yield % | [1] | 4.90% | 4.70%
Five to ten years [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 25,744 | $ 19,677
Over ten years [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 23,771 | 26,407
Over ten years [member] | Debt instruments [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 7,983 | 7,985
Over ten years [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,114 | 1,409
Over ten years [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 22,343 | 24,636
Over ten years [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 314 | 362
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 7,983 | 7,985
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian federal government issued or guaranteed debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 827 | $ 842
Yield % | [1] | 3.80% | 3.90%
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] | Canadian provincial and municipal debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 133 | $ 429
Yield % | [1] | 4.00% | 3.80%
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 6,730 | $ 6,374
Yield % | [1] | 4.30% | 4.40%
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 284 | $ 330
Yield % | [1] | 3.90% | 4.40%
Over ten years [member] | Fair Value Through Other Comprehensive Income [member] | Other debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 9 | $ 10
Yield % | [1] | 5.90% | 5.90%
Over ten years [member] | Financial assets at amortised cost, class [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 15,788 | $ 18,422
Over ten years [member] | Financial assets at amortised cost, class [member] | U.S. treasury and other U.S. agency debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 15,612 | $ 18,262
Yield % | [1] | 4.40% | 4.60%
Over ten years [member] | Financial assets at amortised cost, class [member] | Other foreign government debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 30 | $ 31
Yield % | [1] | 4.30% | 4.30%
Over ten years [member] | Financial assets at amortised cost, class [member] | Corporate debt [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 146 | $ 129
Yield % | [1] | 5.50% | 5.50%
Over ten years [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 23,771 | $ 26,407
No specific maturity [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 2,471 | 5,166
No specific maturity [member] | Canadian dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 552 | 1,464
No specific maturity [member] | U.S. dollar [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 1,495 | 3,333
No specific maturity [member] | Mexican peso [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 106 | 44
No specific maturity [member] | Other currencies [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 318 | 325
No specific maturity [member] | Fair Value Through Other Comprehensive Income [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 398 | 3,162
No specific maturity [member] | Fair Value Through Other Comprehensive Income [member] | Common shares [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 398 | 3,162
No specific maturity [member] | Fair value through profit and loss [member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | 2,471 | 5,166
No specific maturity [member] | Fair value through profit and loss [member] | Equity instruments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Financial instruments at carrying value |  | $ 2,073 | $ 2,004
[1] | Represents the weighted-average yield of fixed income securities.

X
- Definition Investment securities carrying value. + References No definition available. + Details
Name: | bns_InvestmentSecuritiesCarryingValue
Namespace Prefix: | bns_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Weighted average yield fixed income securities. + References No definition available. + Details
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