Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - CAD CAD in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
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Deferred income tax assets | ||
Amount related to tax losses carried forward | CAD 12 | CAD 18 |
Liabilities carrying value in excess of tax basis | 88 | 149 |
Environmental remediation costs | 16 | 30 |
Other | 11 | 58 |
Total deferred income tax assets | 127 | 255 |
Deferred income tax liabilities | ||
Properties carrying value in excess of tax basis | 3,181 | 3,796 |
Pensions carrying value in excess of tax basis | 226 | 0 |
Other | 41 | 30 |
Total deferred income tax liabilities | 3,448 | 3,826 |
Total net deferred income tax liabilities | CAD 3,321 | CAD 3,571 |
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from reserves and accruals. No definition available.
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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