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Schedule Of Measurement Of Lease Liabilities and Right Of Use Assets (Detail) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Jan. 01, 2019
Cash paid for amounts included in the measurement of lease liabilities |  |
Cash flows from operating activities, Operating leases | $ 147 |
Cash flows from operating activities, Finance leases | 45 |
Cash flows from financing activities |  |
Cash flows from financing activities, Finance leases | 27 |
Non-cash right of use assets recorded for lease liabilities |  |
For January 1 adoption of Leases | 258 | $ 298
For January 1 adoption of Leases | 547 |
Adoption of Leases Topic (842) [Member] |  |
Non-cash right of use assets recorded for lease liabilities |  |
For January 1 adoption of Leases | 298 |
For January 1 adoption of Leases |  |
In exchange for new lease liabilities during the year | 104 |
In exchange for new lease liabilities during the year |  |

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