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Insurance Contract Liabilities and Investment Contract Liabilities - Investment Contract Liabilities (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | $ 3,164 | $ 3,082
Individual participating life |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 6 | 8
Individual non-participating life and health |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 257 | 263
Individual annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 2,689 | 2,565
Group annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 212 | 246
Investment contract liabilities with DPF |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 515 | 562
Investment contract liabilities without DPF | Measured at amortized cost |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 2,646 | 2,517
Investment contract liabilities without DPF | Measured at fair value |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 3 | 3
SLF Canada |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 2,646 | 2,517
SLF Canada | Individual participating life |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 0 | 0
SLF Canada | Individual non-participating life and health |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 0 | 0
SLF Canada | Individual annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 2,646 | 2,517
SLF Canada | Group annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 0 | 0
SLF Asia |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 466 | 506
SLF Asia | Individual participating life |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 0 | 0
SLF Asia | Individual non-participating life and health |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 254 | 260
SLF Asia | Individual annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 0 | 0
SLF Asia | Group annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 212 | 246
Corporate |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 52 | 59
Corporate | Individual participating life |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 6 | 8
Corporate | Individual non-participating life and health |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 3 | 3
Corporate | Individual annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | 43 | 48
Corporate | Group annuities |  |
Disclosure of financial liabilities [line items] |  |
Investment contract liabilities (Note 10) | $ 0 | $ 0

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