v3.26.1
Fair Value of Financial Instruments - Summary of Fair Value Hierarchy of Instruments Carried at Fair Value on a Recurring Basis (Detail) - CAD ($)
$ in Millions
Jul. 31, 2026
Apr. 30, 2026
Oct. 31, 2025
Assets:      
Precious metals $ 5,908 $ 10,200 $ 5,156
Trading assets      
Loans 6,450 6,537 8,487
Securities 154,667 149,705 140,844
Other 1,409 1,447 2,892
Derivative financial instruments      
Derivative Financial Assets 50,531 46,709 46,531
Liabilities:      
Deposits [1] 1,006,015 981,489 966,279
Financial liabilities designated at fair value through profit or loss 52,864 48,629 47,165
Obligations related to securities sold short 39,971 38,064 38,104
Derivative financial instruments      
Derivative Financial Liabilities 58,344 56,854 56,031
Recurring fair value measurement [member] | IFRS9 [member]      
Assets:      
Precious metals [2] 5,908 10,200 5,156
Trading assets      
Assets 162,526 157,689 152,223
Investment securities      
Investment securities 130,460 [3] 127,818 [3] 126,226 [4]
Derivative financial instruments      
Derivative Financial Assets 50,531 46,709 46,531
Liabilities:      
Deposits [5] 464 448 335
Financial liabilities designated at fair value through profit or loss 52,864 48,629 47,165
Obligations related to securities sold short 39,971 38,064 38,104
Derivative financial instruments      
Derivative Financial Liabilities 58,344 56,854 56,031
Recurring fair value measurement [member] | Trading loans [member] | IFRS9 [member]      
Trading assets      
Loans 6,450 6,537 8,487
Recurring fair value measurement [member] | Canadian federal government and government guaranteed debt [member] | IFRS9 [member]      
Trading assets      
Securities 19,246 20,787 15,801
Investment securities      
Investment securities 24,791 [3] 23,443 [3] 23,110 [4]
Recurring fair value measurement [member] | Canadian provincial and municipal debt [member] | IFRS9 [member]      
Trading assets      
Securities 12,889 12,806 11,710
Investment securities      
Investment securities 24,095 [3] 23,993 [3] 20,843 [4]
Recurring fair value measurement [member] | U.S. treasury and other U.S. agencies debt [member] | IFRS9 [member]      
Trading assets      
Securities 9,664 10,107 9,132
Investment securities      
Investment securities 47,876 [3] 47,090 [3] 49,036 [4]
Recurring fair value measurement [member] | Other foreign governments debt [member] | IFRS9 [member]      
Trading assets      
Securities 11,690 11,932 10,288
Investment securities      
Investment securities 28,267 [3] 27,713 [3] 27,726 [4]
Recurring fair value measurement [member] | Corporate and other debt [member] | IFRS9 [member]      
Trading assets      
Securities 13,140 11,568 10,116
Investment securities      
Investment securities 3,060 [3] 3,254 [3] 3,040 [4]
Recurring fair value measurement [member] | Equity securities [member] | IFRS9 [member]      
Trading assets      
Securities 88,038 82,505 83,797
Investment securities      
Investment securities 2,371 [3] 2,325 [3] 2,471 [4]
Recurring fair value measurement [member] | Other trading assets [member] | IFRS9 [member]      
Trading assets      
Other 1,409 1,447 2,892
Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 10,146 9,456 9,807
Recurring fair value measurement [member] | Foreign exchange and gold contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 25,041 21,997 26,412
Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 8,932 6,806 7,429
Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 217 178 273
Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 6,195 8,272 2,610
Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 17,646 17,415 17,189
Recurring fair value measurement [member] | Foreign exchange and gold contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 23,943 21,489 25,793
Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 11,388 10,950 10,114
Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 20 21 26
Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 5,347 6,979 2,909
Level 1 [member] | Recurring fair value measurement [member] | IFRS9 [member]      
Trading assets      
Assets 132,717 121,894 120,116
Investment securities      
Investment securities 89,436 [3] 79,855 [3] 81,047 [4]
Derivative financial instruments      
Derivative Financial Assets 772 596 816
Liabilities:      
Obligations related to securities sold short 37,355 33,715 34,864
Derivative financial instruments      
Derivative Financial Liabilities 1,348 848 783
Level 1 [member] | Recurring fair value measurement [member] | Canadian federal government and government guaranteed debt [member] | IFRS9 [member]      
Trading assets      
Securities 16,781 15,886 13,838
Investment securities      
Investment securities 17,224 [3] 14,170 [3] 15,143 [4]
Level 1 [member] | Recurring fair value measurement [member] | Canadian provincial and municipal debt [member] | IFRS9 [member]      
Trading assets      
Securities 9,846 9,498 8,374
Investment securities      
Investment securities 19,235 [3] 17,815 [3] 16,293 [4]
Level 1 [member] | Recurring fair value measurement [member] | U.S. treasury and other U.S. agencies debt [member] | IFRS9 [member]      
Trading assets      
Securities 9,658 10,107 9,132
Investment securities      
Investment securities 41,020 [3] 41,153 [3] 42,300 [4]
Level 1 [member] | Recurring fair value measurement [member] | Other foreign governments debt [member] | IFRS9 [member]      
Trading assets      
Securities 1,112 713 1,837
Investment securities      
Investment securities 10,876 [3] 6,445 [3] 7,099 [4]
Level 1 [member] | Recurring fair value measurement [member] | Corporate and other debt [member] | IFRS9 [member]      
Trading assets      
Securities 7,439 3,352 3,523
Investment securities      
Investment securities 904 [3] 192 [3] 116 [4]
Level 1 [member] | Recurring fair value measurement [member] | Equity securities [member] | IFRS9 [member]      
Trading assets      
Securities 87,881 82,338 83,412
Investment securities      
Investment securities 177 [3] 80 [3] 96 [4]
Level 1 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 772 596 816
Level 1 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 1,348 848 783
Level 2 [member] | Recurring fair value measurement [member] | IFRS9 [member]      
Assets:      
Precious metals [2] 5,908 10,200 5,156
Trading assets      
Assets 29,651 35,632 32,094
Investment securities      
Investment securities 39,064 [3] 46,044 [3] 43,101 [4]
Derivative financial instruments      
Derivative Financial Assets 49,699 46,067 45,530
Liabilities:      
Deposits [5] 464 448 335
Financial liabilities designated at fair value through profit or loss 52,864 48,629 47,165
Obligations related to securities sold short 2,615 4,349 3,240
Derivative financial instruments      
Derivative Financial Liabilities 56,966 55,966 55,183
Level 2 [member] | Recurring fair value measurement [member] | Trading loans [member] | IFRS9 [member]      
Trading assets      
Loans 6,300 6,391 8,486
Level 2 [member] | Recurring fair value measurement [member] | Canadian federal government and government guaranteed debt [member] | IFRS9 [member]      
Trading assets      
Securities 2,465 4,901 1,963
Investment securities      
Investment securities 7,567 [3] 9,273 [3] 7,967 [4]
Level 2 [member] | Recurring fair value measurement [member] | Canadian provincial and municipal debt [member] | IFRS9 [member]      
Trading assets      
Securities 3,043 3,308 3,336
Investment securities      
Investment securities 4,860 [3] 6,178 [3] 4,550 [4]
Level 2 [member] | Recurring fair value measurement [member] | U.S. treasury and other U.S. agencies debt [member] | IFRS9 [member]      
Trading assets      
Securities 6    
Investment securities      
Investment securities 6,856 [3] 5,937 [3] 6,736 [4]
Level 2 [member] | Recurring fair value measurement [member] | Other foreign governments debt [member] | IFRS9 [member]      
Trading assets      
Securities 10,578 11,219 8,451
Investment securities      
Investment securities 17,391 [3] 21,268 [3] 20,627 [4]
Level 2 [member] | Recurring fair value measurement [member] | Corporate and other debt [member] | IFRS9 [member]      
Trading assets      
Securities 5,701 8,216 6,593
Investment securities      
Investment securities 2,127 [3] 3,053 [3] 2,892 [4]
Level 2 [member] | Recurring fair value measurement [member] | Equity securities [member] | IFRS9 [member]      
Trading assets      
Securities 149 150 373
Investment securities      
Investment securities 263 [3] 335 [3] 329 [4]
Level 2 [member] | Recurring fair value measurement [member] | Other trading assets [member] | IFRS9 [member]      
Trading assets      
Other 1,409 1,447 2,892
Level 2 [member] | Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 10,146 9,456 9,804
Level 2 [member] | Recurring fair value measurement [member] | Foreign exchange and gold contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 25,040 21,996 26,411
Level 2 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 8,135 6,181 6,452
Level 2 [member] | Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 195 169 269
Level 2 [member] | Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 6,183 8,265 2,594
Level 2 [member] | Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 17,646 17,414 17,181
Level 2 [member] | Recurring fair value measurement [member] | Foreign exchange and gold contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 23,943 21,489 25,793
Level 2 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 10,021 10,074 9,288
Level 2 [member] | Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 17 19 24
Level 2 [member] | Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 5,339 6,970 2,897
Level 3 [member] | Recurring fair value measurement [member] | IFRS9 [member]      
Trading assets      
Assets 158 163 13
Investment securities      
Investment securities 1,960 [3] 1,919 [3] 2,078 [4]
Derivative financial instruments      
Derivative Financial Assets 60 46 185
Liabilities:      
Obligations related to securities sold short 1    
Derivative financial instruments      
Derivative Financial Liabilities 30 40 65
Level 3 [member] | Recurring fair value measurement [member] | Trading loans [member] | IFRS9 [member]      
Trading assets      
Loans 150 146 1
Level 3 [member] | Recurring fair value measurement [member] | Corporate and other debt [member] | IFRS9 [member]      
Investment securities      
Investment securities 29 [3] 9 [3] 32 [4]
Level 3 [member] | Recurring fair value measurement [member] | Equity securities [member] | IFRS9 [member]      
Trading assets      
Securities 8 17 12
Investment securities      
Investment securities 1,931 [3] 1,910 [3] 2,046 [4]
Level 3 [member] | Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets     3
Level 3 [member] | Recurring fair value measurement [member] | Foreign exchange and gold contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 1 1 1
Level 3 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 25 29 161
Level 3 [member] | Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 22 9 4
Level 3 [member] | Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Assets 12 7 16
Level 3 [member] | Recurring fair value measurement [member] | Interest rate contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities   1 8
Level 3 [member] | Recurring fair value measurement [member] | Equity contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 19 28 43
Level 3 [member] | Recurring fair value measurement [member] | Credit contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities 3 2 2
Level 3 [member] | Recurring fair value measurement [member] | Commodity Contracts [member] | IFRS9 [member]      
Derivative financial instruments      
Derivative Financial Liabilities $ 8 $ 9 $ 12
[1] Deposits denominated in U.S. dollars amount to $329,956 (April 30, 2026 – $317,453 ; October 31, 2025 – $297,065), deposits denominated in Chilean pesos amount to $21,091 (April 30, 2026 – $20,300; October 31, 2025 – $20,053), deposits denominated in Mexican pesos amount to $38,592 (April 30, 2026 – $36,731; October 31, 2025 – $35,941) and deposits denominated in other foreign currencies amount to $110,620 (April 30, 2026 – $109,608; October 31, 2025 – $117,530).
[2] The fair value of precious metals is determined based on quoted market prices and forward spot prices, where applicable, less the cost to sell.
[3] Excludes debt investment securities measured at amortized cost of $0 (April 30, 2026 – $21,988).
[4] Excludes debt investment securities measured at amortized cost of $23,722.
[5] These amounts represent embedded derivatives bifurcated from structured note liabilities measured at amortized cost.