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Debt And Credit Facilities-Credit facilities- (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of detailed information about borrowings [line items] |  |
Total credit facilities | $ 8,398.0 |
Total unutilized credit facilities | 3,898.0 |
Available credit facilities for liquidity purposes | 3,608.0 | $ 4,489.0
Fully revolving and expires in 2021 |  |
Disclosure of detailed information about borrowings [line items] |  |
Total credit facilities | 4,000.0 |
Fully revolving and expires in 2020 |  |
Disclosure of detailed information about borrowings [line items] |  |
Total credit facilities | 2,729.0 |
Fully revolving and expires in 2019/2020 |  |
Disclosure of detailed information about borrowings [line items] |  |
Total credit facilities | 1,537.0 |
Can be terminated at any time at the option of the lenders |  |
Disclosure of detailed information about borrowings [line items] |  |
Total credit facilities | 132.0 |
Credit facilities supporting outstanding commercial paper |  |
Disclosure of detailed information about borrowings [line items] |  |
Credit facilities assigned | (3,231.0) |
Credit facilities supporting standby letters of credit |  |
Disclosure of detailed information about borrowings [line items] |  |
Credit facilities assigned | (1,269.0) |
Cash collateral | $ 108.0 | $ 733.0

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- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 50 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_50_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
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- Definition Represents the portion of line of credit facilities that are assigned for specific purposes. + References No definition available. + Details
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- Definition The amount of undrawn borrowing facilities for liquidity purposes that may be available for future operating activities and to settle capital commitments. + References No definition available. + Details
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