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Investment Contract Liabilities - Summary of Changes in Investment Contract Liabilities Measured at Amortized Cost (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure of Investment Contract Liabilities [line items] |  |
Beginning balance | $ 3,117 |
Ending balance | 3,248 | $ 3,117
Amortized cost, gross of reinsurance ceded [Member] |  |
Disclosure of Investment Contract Liabilities [line items] |  |
Beginning balance | 2,315 | 2,356
Policy deposits | 200 | 92
Interest | 67 | 71
Withdrawals | (236) | (191)
Fees | (1) | (1)
Other |  | (5)
Impact of changes in foreign exchange rates | 107 | (7)
Ending balance | $ 2,452 | $ 2,315

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- Definition The amount of liabilities relating to investment contracts that fall within the scope of IAS 39 or IFRS 9. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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