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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, 2018 | Dec. 31, 2017
Net policyholder cash flow |  |
Deposits from policyholders | $ 38,236 | $ 34,776
Net transfers to general fund | (1,089) | (1,734)
Payments to policyholders | (47,475) | (46,305)
Net policyholder cash flow | (10,328) | (13,263)
Investment related |  |
Interest and dividends | 19,535 | 16,930
Net realized and unrealized investment gains (losses) | (34,683) | 24,384
Investment related | (15,148) | 41,314
Other |  |
Management and administration fees | (3,985) | (4,161)
Impact of changes in foreign exchange rates | 18,249 | (14,790)
Other | 14,264 | (18,951)
Net additions (deductions) | (11,212) | 9,100
Segregated funds net assets, beginning of year | 324,808 | 315,708
Segregated funds net assets, end of year | $ 313,596 | $ 324,808

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