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Financial Instruments And Risk Management - Financial Liabilities (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivatives |  |
Financial Liabilities Offsetting |  |
Gross Liabilities | $ (1,539) | $ (1,231)
Gross Assets Offset | 1,384 | 1,052
Net Amounts Presented | (155) | (179)
Accounts Payable |  |
Financial Liabilities Offsetting |  |
Gross Liabilities | (1,798) | (2,270)
Gross Assets Offset | 882 | 1,252
Net Amounts Presented | (916) | (1,018)
Financial liabilities |  |
Financial Liabilities Offsetting |  |
Gross Liabilities | (3,337) | (3,501)
Gross Assets Offset | 2,266 | 2,304
Net Amounts Presented | $ (1,071) | $ (1,197)

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- Definition The gross amount of recognised financial liabilities that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 13C -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_13C_a&doctype=Standard -URIDate 2018-03-16 + Details
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