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Leases (Tables) | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Adoption of New IFRS Pronouncements | As at December 31, 2021, $704 million (2020 – $730 million) of right-of-use assets are recorded as part of land, buildings, plant and equipment within property, plant and equipment.
(CAD$ in millions) | 2021 | 2020
Opening net book value | $ | 730 |  | $ | 762 |
Additions | 141 |  | 312 |
Depreciation | (163) |  | (166) |
Changes in foreign exchange rates and other | (4) |  | (178) |
Closing net book value | $ | 704 |  | $ | 730 |
Disclosure of Lease Liability Continuity | Lease Liability Continuity
(CAD$ in millions) | 2021 | 2020
As at January 1 | $ | 692 |  | $ | 672 |
Cash flows |  |
Principal payments | (139) |  | (163) |
Interest payments | (35) |  | (37) |
Non-cash changes |  |
Additions | 151 |  | 319 |
Interest expense (Note 9) | 35 |  | 37 |
Changes in foreign exchange and other | (10) |  | (136) |
As at December 31 | $ | 694 |  | $ | 692 |
Less current portion | (127) |  | (119) |
Long-term lease liabilities | $ | 567 |  | $ | 573 |

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