The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value, net of tax.

No definition available.

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- References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 225
-Section 45
-Paragraph 11
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Impairment
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760

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PROPERTY, PLANT AND EQUIPMENT - IMPAIRMENT (Details) - CAD CAD in Millions		12 Months Ended
	Nov. 29, 2016	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
IMPAIRMENT
Impairment loss		CAD 1,376	CAD 96
Northern Gateway Pipeline Project
IMPAIRMENT
Impairment loss	CAD 373
Impairment loss, net of tax	CAD 272
Sandpiper Project
IMPAIRMENT
Impairment loss		992
Impairment loss, net of tax		81
Estimated remaining fair value				CAD 71
Enbridge Energy Partners, L.P.
IMPAIRMENT
Impairment charges			96
Land \| Sandpiper Project
IMPAIRMENT
Estimated remaining fair value		3
Non-core trucking assets and related facilities \| Enbridge Energy Partners, L.P.
IMPAIRMENT
Impairment charges		CAD 11
Berthold rail facility \| Enbridge Energy Partners, L.P.
IMPAIRMENT
Impairment charges			80
Louisiana propylene pipeline \| Enbridge Energy Partners, L.P.
IMPAIRMENT
Impairment charges			CAD 16