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Financial Instrument Risk Management - Mortgages and Loans by Geographic Location and Type (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of detailed information about financial instruments [line items]
Carrying value	$ 178,698	$ 162,948
Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	14,438	14,145
Loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	43,181	40,455
Total mortgages and loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	57,619	54,600
Retail | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	2,567	2,558
Office | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	2,633	2,754
Multi-family residential | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	4,499	4,839
Industrial | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	3,683	2,954
Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,056	1,040
Canada | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	9,402	9,377
Canada | Mortgages | Canada Mortgage And Housing Corporation
Disclosure of detailed information about financial instruments [line items]
Carrying value	3,630	4,023
Canada | Loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	12,560	12,924
Canada | Total mortgages and loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	21,962	22,301
Canada | Retail | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,398	1,376
Canada | Office | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,385	1,500
Canada | Multi-family residential | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	3,451	3,838
Canada | Industrial | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	2,369	1,839
Canada | Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	799	824
U.S. | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	4,828	4,609
U.S. | Loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	18,856	17,086
U.S. | Total mortgages and loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	23,684	21,695
U.S. | Retail | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,169	1,182
U.S. | Office | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,248	1,254
U.S. | Multi-family residential | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,048	1,001
U.S. | Industrial | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	1,314	1,115
U.S. | Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	49	57
United Kingdom | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	208	159
United Kingdom | Loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	4,478	4,089
United Kingdom | Total mortgages and loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	4,686	4,248
United Kingdom | Retail | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
United Kingdom | Office | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
United Kingdom | Multi-family residential | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
United Kingdom | Industrial | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
United Kingdom | Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	208	159
Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
Other | Loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	7,287	6,356
Other | Total mortgages and loans
Disclosure of detailed information about financial instruments [line items]
Carrying value	7,287	6,356
Other | Retail | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
Other | Office | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
Other | Multi-family residential | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
Other | Industrial | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	0	0
Other | Other | Mortgages
Disclosure of detailed information about financial instruments [line items]
Carrying value	$ 0	$ 0

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

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