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Business Segments (Parenthetical) (Detail) (CAD) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |  |  |  |
Operating revenues | 32,722 | [1],[2],[3] | 31,053 | [1],[2],[3] | 30,474 | [1],[2],[3]
Write-down of refinery plant and equipment reported as depreciation and depletion expenses | 245 |  |  |  |  |
Decommissioning, environmental and employee-related costs reported as production and manufacturing expenses | 132 |  |  |  |  |
Amount incurred related to decommissioning, environmental and employee related cost | 40 |  |  |  |  |
Property plant and equipment under construction | 9,234 |  | 13,846 |  |  |
Goodwill | 224 |  | 204 |  |  |
Pre Tax |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Charges related to conversion of refinery to terminal | 377 |  |  |  |  |
After Tax |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Charges related to conversion of refinery to terminal | 280 |  |  |  |  |
United States Exports |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Operating revenues | 5,217 |  | 4,358 |  | 4,175 |
Upstream |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Operating revenues | 6,016 | [3] | 4,674 | [3] | 5,278 | [3]
Goodwill | 20 |  |  |  |  |
[1] | Operating revenues include federal excise tax of $1,423 million (2012 - $1,338 million, 2011 - $1,320 million).
[2] | Operating revenues include amounts from related parties of $2,385 million (2012 - $2,907 million, 2011 - $2,818 million), (note 16).
[3] | Includes export sales to the United States of $5,217 million (2012 - $4,358 million, 2011 - $4,175 million). Export sales to the United States were recorded in all operating segments, with the largest effects in the Upstream segment.

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