v3.22.2.2
Parent company information - Summary of Parent Company Information - Condensed Statements of Cash Flows (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Cash flows from operating activities    
Net income $ 15,807 $ 16,050
Adjustments to determine net cash from operating activities:    
Change in deposits, net of securitizations 108,533 88,876
Change in loans, net of securitizations (102,653) (54,987)
Change in trading securities (8,931) (3,164)
Change in obligations related to assets sold under repurchase agreements and securities loaned 11,746 (12,030)
Change in assets purchased under reverse repurchase agreements and securities borrowed (9,942) 5,112
Change in obligations related to securities sold short (2,330) 8,556
Other operating activities, net 2,800 9,191
Net cash from (used in) operating activities 21,942 61,044
Cash flows from investing activities    
Change in interest-bearing deposits with banks (28,373) (40,618)
Purchases of investment securities (122,964) (123,547)
Net acquisitions of premises and equipment and other intangibles (2,500) (2,186)
Net cash from (used in) investing activities (57,054) (57,348)
Cash flows from financing activities    
Issuance of subordinated debentures 1,000 2,750
Repayment of subordinated debentures (192) (2,500)
Issue of common shares, net of issuance costs 51 90
Common shares purchased for cancellation (5,426)
Issue of preferred shares and other equity instruments, net of issuance costs 749 2,245
Redemption of preferred shares and other equity instruments (155) (1,475)
Dividends paid on shares and distributions paid on other equity instruments (6,960) (6,420)
Net cash from (used in) financing activities (2,185) (5,928)
Net change in cash and due from banks (41,449) (5,042)
Cash and due from banks at beginning of period 113,846 118,888
Cash and due from banks at end of period 72,397 113,846
Supplemental disclosure of cash flow information    
Amount of interest paid 13,677 7,555
Amount of interest received 35,817 26,412
Amount of dividends received 3,144 2,575
Amount of income taxes paid 7,326 4,198
Parent [member]    
Cash flows from operating activities    
Net income 15,794 16,038
Adjustments to determine net cash from operating activities:    
Change in undistributed earnings of subsidiaries (8,454) (7,415)
Change in deposits, net of securitizations 101,145 72,196
Change in loans, net of securitizations (78,288) (46,194)
Change in trading securities (10,348) (8,756)
Change in obligations related to assets sold under repurchase agreements and securities loaned 24,133 5,228
Change in assets purchased under reverse repurchase agreements and securities borrowed (7,239) 8,447
Change in obligations related to securities sold short 3,024 2,405
Other operating activities, net 2,385 6,316
Net cash from (used in) operating activities 42,152 48,265
Cash flows from investing activities    
Change in interest-bearing deposits with banks (27,784) (35,293)
Proceeds from sales and maturities of investment securities 59,304 70,260
Purchases of investment securities (71,509) (73,150)
Net acquisitions of premises and equipment and other intangibles (1,180) (1,093)
Change in cash invested in subsidiaries (2,514) (3,078)
Change in net funding provided to subsidiaries (36,981) (12,068)
Net cash from (used in) investing activities (80,664) (54,422)
Cash flows from financing activities    
Issuance of subordinated debentures 1,000 2,750
Repayment of subordinated debentures (2,500)
Issue of common shares, net of issuance costs 51 90
Common shares purchased for cancellation (5,426)
Issue of preferred shares and other equity instruments, net of issuance costs 749 2,245
Redemption of preferred shares and other equity instruments (155) (1,475)
Dividends paid on shares and distributions paid on other equity instruments (6,960) (6,420)
Repayment of lease liabilities (302) (313)
Net cash from (used in) financing activities (11,043) (5,623)
Net change in cash and due from banks (49,555) (11,780)
Cash and due from banks at beginning of period 97,617 109,397
Cash and due from banks at end of period 48,062 97,617
Supplemental disclosure of cash flow information    
Amount of interest paid 7,801 6,306
Amount of interest received 21,332 17,831
Amount of dividends received 2,618 2,185
Amount of income taxes paid $ 4,641 $ 1,772