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Acquisitions and Other - Acquisitions and Other (Details) - CAD ($) $ in Millions			3 Months Ended
	Jan. 20, 2023	Apr. 05, 2022	Mar. 31, 2023	Jun. 30, 2025	Feb. 01, 2023	Jun. 30, 2022
Canadian Premier Life Insurance Company | Disposal groups classified as held for sale
Disclosure of detailed information about business combination [line items]
Assets included in disposal group					$ 638
Liabilities included in disposal group					638
Cash consideration					98
Contingent consideration					$ 25
Pre-tax gain on sale			$ 102
Gain on disposition			$ 65
Dah Sing Bank, Limited
Disclosure of detailed information about business combination [line items]
Bancassurance partnership, term	15 years
Consideration transferred	$ 260
PT Bank CIMB Niaga Tbk
Disclosure of detailed information about business combination [line items]
Bancassurance partnership, term		15 years
Consideration transferred						$ 508
Bancassurance partnership, extension term		6 years
Intangible assets and Goodwill						$ 18
PT Bank CIMB Niaga Tbk | Forecast
Disclosure of detailed information about business combination [line items]
Intangible assets and Goodwill				$ 490

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- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

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The gain (loss) recognised on the measurement to fair value less costs to sell or on the disposal of the assets or disposal group(s) constituting the discontinued operation. [Refer: Discontinued operations [member]]

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The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]

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The amount of non-current assets or disposal groups classified as held for sale. [Refer: Disposal groups classified as held for sale [member]]

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Bancassurance Partnership, Extension Term

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Disposal Group, Consideration

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Gain (Loss) On Disposition Of Business, Pre-Tax

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