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Invested Assets and Investment Income - Schedule of Carrying Values and Fair Values of Invested Assets (Detail) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Disclosure of fair value measurement of assets [Line Items] |  |  |
Cash and short-term securities | $ 16,215 | $ 15,965 | $ 15,151
Debt securities | 185,594 | 174,000 |
Public equities | 19,179 | 21,545 |
Mortgages | 48,363 | 44,742 |
Private placements | 35,754 | 32,132 |
Policy loans | 6,446 | 5,808 |
Loans to bank clients | 1,793 | 1,737 |
Real estate | 12,777 | 13,810 |
Total invested assets | 353,664 | 334,222 |
Other invested assets | 27,543 | 24,483 |
FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Cash and short-term securities | 1,080 | 439 |
Debt securities | 107,425 | 96,785 |
Public equities | 16,721 | 18,473 |
Total invested assets | 187,409 | 178,096 |
AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Cash and short-term securities | 10,163 | 11,429 |
Debt securities | 5,245 | 5,366 |
Public equities | 2,458 | 3,072 |
Total invested assets | 43,579 | 41,565 |
Other invested assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Cash and short-term securities | 4,972 | 4,097 |
Mortgages | 48,363 | 44,742 |
Private placements | 35,754 | 32,132 |
Policy loans | 6,446 | 5,808 |
Loans to bank clients | 1,793 | 1,737 |
Total invested assets | 122,676 | 114,561 |
Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Cash and short-term securities | 16,215 | 15,965 |
Public equities | 19,179 | 21,545 |
Mortgages | 48,628 | 46,065 |
Private placements | 36,103 | 34,581 |
Policy loans | 6,446 | 5,808 |
Loans to bank clients | 1,797 | 1,742 |
Total invested assets | 356,217 | 339,488 |
Canadian government and agency [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 23,787 | 22,778 |
Canadian government and agency [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 16,445 | 17,886 |
Canadian government and agency [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 7,342 | 4,892 |
Canadian government and agency [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 23,787 | 22,778 |
U.S. government and agency [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 25,924 | 25,969 |
U.S. government and agency [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 11,934 | 12,497 |
U.S. government and agency [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 13,990 | 13,472 |
U.S. government and agency [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 25,924 | 25,969 |
Other government and agency [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 20,260 | 19,826 |
Other government and agency [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 16,159 | 16,838 |
Other government and agency [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 4,101 | 2,988 |
Other government and agency [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 20,260 | 19,826 |
Corporate [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 112,670 | 102,151 |
Corporate [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 107,425 | 96,785 |
Corporate [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 5,245 | 5,366 |
Corporate [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 112,670 | 102,151 |
Mortgage/asset-backed securities [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 2,953 | 3,276 |
Mortgage/asset-backed securities [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 2,774 | 3,018 |
Mortgage/asset-backed securities [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 179 | 258 |
Mortgage/asset-backed securities [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Debt securities | 2,953 | 3,276 |
Real estate own use property [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 2,016 | 1,281 |
Real estate own use property [Member] | Other invested assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 2,016 | 1,281 |
Real estate own use property [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 3,179 | 2,448 |
Investment property [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 10,761 | 12,529 |
Investment property [Member] | Other invested assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 10,761 | 12,529 |
Investment property [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Real estate | 10,761 | 12,529 |
Alternative long-duration assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 23,438 | 20,730 |
Alternative long-duration assets [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 14,720 | 12,018 |
Alternative long-duration assets [Member] | AFS [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 101 | 88 |
Alternative long-duration assets [Member] | Other invested assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 8,617 | 8,624 |
Alternative long-duration assets [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 24,211 | 21,053 |
Various other [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 4,105 | 3,753 |
Various other [Member] | FVTPL [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 151 | 142 |
Various other [Member] | Other invested assets [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | 3,954 | 3,611 |
Various other [Member] | Fair value [Member] |  |  |
Disclosure of fair value measurement of assets [Line Items] |  |  |
Other invested assets | $ 4,104 | $ 3,752 |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_45&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B13_a&doctype=Appendix&seq=2 -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_i&doctype=Standard -URIDate 2018-03-16 + Details
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