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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2018
Text block [abstract] |
Summary of Future Aggregate Minimum Lease Payments Under Non-cancellable Operating Leases | The future aggregate minimum lease payments under non-cancellable operating leases are as follows:
(CAD$ in millions) |  | 2018 |  |  | 2017 |
Less than one year |  | $ | 113 |  |  | $ | 93 |
One to five years |  |  | 162 |  |  |  | 179 |
Thereafter |  |  | 164 |  |  |  | 327 |
|  | $ | 439 |  |  | $ | 599 |

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- Definition The disclosure of future aggregate minimum lease payments under non cancellable operating lease. + References No definition available. + Details
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