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Segregated Funds - Summary of Changes in Segregated Funds Net Assets (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Net policyholder cash flow |  |
Deposits from policyholders | $ 42,427 | $ 44,548
Net transfers to general fund | (1,267) | (732)
Payments to policyholders | (46,333) | (52,182)
Net policyholder cash flow | (5,173) | (8,366)
Investment related |  |
Interest and dividends | 21,900 | 24,092
Net realized and unrealized investment gains (losses) | (78,017) | 21,549
Investment related | (56,117) | 45,641
Other |  |
Management and administration fees | (3,886) | (4,115)
Impact of changes in foreign exchange rates | 13,913 | (773)
Other | 10,027 | (4,888)
Net additions | (51,263) | 32,387
Segregated funds net assets, beginning of year | 400,196 | 367,809
Segregated funds net assets, end of year | $ 348,933 | $ 400,196

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