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Other Current Liabilities (Details) - CAD CAD in Millions	Dec. 31, 2016	Dec. 31, 2015
Other Current Liabilities [Abstract]
Accrued Liabilities, Current	CAD 137	CAD 130
Accrued interest on long-term debt	96	44
Sales and Excise Tax Payable, Current	16	4
Accrued interest on convertible debentures represented by instalment receipts	0	11
Deferred Emission Credits, Current	10	6
Dividends Payable, Current	0	0
Other Sundry Liabilities, Current	22	12
Other Liabilities, Current, Total	CAD 281	CAD 207

X

- Definition

Carrying value as of the balance sheet date of Accrued interest on convertible debentures represented by instalment receipts which are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. These are due within one year or within the normal operating cycle if longer.

+ References

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- Definition

Carrying value as of the balance sheet date of accrued interest related to long term debt which are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. These are due within one year or within the normal operating cycle if longer.

+ References

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- Definition

Carrying amount as of the balance sheet date of emission credits, not otherwise specified in the taxonomy, which is expected to be taken into income during the current period and current obligations not separately disclosed in the balance sheet (other liabilities, current).

+ References

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ 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 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 8
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Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date.

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Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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