Risk Management - Effect of Unconditional Netting (Details) - CAD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Credit linked note | ||
| Disclosure of credit risk exposure [line items] | ||
| Gross amounts of financial instruments | $ 1,349 | $ 1,392 |
| Amounts subject to an enforceable netting arrangement | (1,349) | (1,392) |
| Net amounts of financial instruments | 0 | 0 |
| Variable surplus note | ||
| Disclosure of credit risk exposure [line items] | ||
| Gross amounts of financial instruments | (1,349) | (1,392) |
| Amounts subject to an enforceable netting arrangement | 1,349 | 1,392 |
| Net amounts of financial instruments | 0 | 0 |
| Fixed Surplus Note | ||
| Disclosure of credit risk exposure [line items] | ||
| Net amounts of financial instruments presented in the Consolidated Statements of Financial Position | $ 0 | $ 0 |