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v3.20.4

Other Liabilities - Narrative (Details) $ in Millions |  | 1 Months Ended | 12 Months Ended | 122 Months Ended
--- | --- | --- | --- | ---
Nov. 08, 2007 USD ($) | Sep. 30, 2020 CAD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 CAD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2017 USD ($)
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Net gains (losses) on available-for-sale assets |  |  |  | $ 451,000,000 | $ 167,000,000 |
Interest and investment income (loss) |  |  |  | 5,407,000,000 | 5,855,000,000 |
Maximum borrowing capacity |  |  |  | 846,000,000 | 859,000,000 |
Interest expense |  |  |  | 355,000,000 | 333,000,000 |
Borrowed Funds |  |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Interest expense on borrowings |  |  |  | 22,000,000 | 13,000,000 |
Variable Principal Floating Rate Certificate |  |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Interest expense |  |  |  | 28,000,000 | 64,000,000 |
Financial liabilities, at fair value |  |  |  | $ 0 | $ 1,874,000,000 |
Variable Principal Floating Rate Certificate | Consolidated structured entities |  |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Proceeds from borrowings | $ 1,000 |  |  |  |  | $ 515
Repayments of borrowings, classified as financing activities |  | $ 2,020,000,000 | $ 1,515 |  |  |
Net gains (losses) on available-for-sale assets |  | 282,000,000 |  |  |  |
Interest and investment income (loss) |  | $ (342,000,000) |  |  |  |

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