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Business Segments (Parenthetical) (Detail) - CAD
CAD in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2016

Sep. 30, 2015

Segment Reporting Information [Line Items]

Operating revenues

^[1],[2]

CAD 6,568

^[3]

CAD 7,111

^[3]

CAD 17,967

^[4]

CAD 20,553

^[4]

United States Exports

Segment Reporting Information [Line Items]

Operating revenues

CAD 941

CAD 1,168

CAD 2,704

CAD 3,331

[1]	Amounts from related parties included in operating revenues.*
[2]	Federal excise tax included in operating revenues.
[3]	Included export sales to the United States of $941 million (2015 - $1,168 million). Export sales to the United States were recorded in all operating segments, with the largest effects in the Upstream segment.
[4]	Included export sales to the United States of $2,704 million (2015 - $3,331 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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- Definition

Total revenue from sales of goods and services during the reporting period, reduced by sales returns and allowances and sales discounts. Also includes federal excise tax which is then deducted as an expense.

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- Definition

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