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Sale Of Cedar Point (Details) - CAD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Non Current Assets Or Disposal Groups Classified As Held For Sale [Line Items] |  |  |
Gain on disposal of assets |  | $ 24 | $ 602
Assets |  |  |
Property, plant and equipment, net |  | 74,245 | 73,493
Total assets |  | 89,579 | 89,494
Liabilities |  |  |
Other non-current liabilities |  | 2,346 | 2,412
Provisions |  | 6,984 | $ 7,237
Cedar Point Wind Facility |  |  |
Non Current Assets Or Disposal Groups Classified As Held For Sale [Line Items] |  |  |
Proceeds from sale of cedar point | $ 291 |  |
Gain on disposal of assets |  | 83 |
Current tax expense |  | 29 |
Deferred tax recovery |  | $ 15 |

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