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Long Term Debt - Additional Information (Detail) (CAD) In Millions, unless otherwise specified | 3 Months Ended |  |  |  |
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Sep. 30, 2013 Stand-by long term credit facility | Mar. 31, 2013 Stand-by long term credit facility | Dec. 31, 2012 Stand-by long term credit facility | Dec. 31, 2013 Floating Rate Loan Facility Exxon Mobil | Jan. 31, 2014 Subsequent Event Floating Rate Loan Facility Exxon Mobil
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, maturity date | Aug. 31, 2015 |  |  |  |
Line of Credit maximum borrowing capacity |  | 500 | 300 | 5,000 | 6,250

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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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