Represents the capacity in megawatts of the wind project acquired.

No definition available.

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- Definition

The pro forma earnings before interest and income taxes for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

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- Definition

Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Details

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- Details

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- Details

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ACQUISITION AND DISPOSITIONS - ACQUISITIONS, CHAPMAN AND OTHER (Details) CAD in Millions, $ in Millions					1 Months Ended				12 Months Ended
	Nov. 02, 2016 USD ($)	Nov. 02, 2016 CAD	Sep. 09, 2016 USD ($) MW	Sep. 09, 2016 CAD MW	Nov. 30, 2015 USD ($) MW	Nov. 30, 2015 CAD MW	Dec. 31, 2014 CAD	Oct. 31, 2014 CAD	Dec. 31, 2016 USD ($)	Dec. 31, 2016 CAD	Dec. 31, 2015 CAD	Dec. 31, 2014 CAD	Nov. 02, 2016 CAD	Sep. 09, 2016 CAD	Nov. 30, 2015 CAD	Dec. 31, 2012	Dec. 31, 2011
ACQUISITIONS
Cash consideration										CAD 644	CAD 106	CAD 394
Chapman Ranch Wind Project
ACQUISITIONS
Ownership interest acquired (as a percent)			100.00%											100.00%
Wind project capacity \| MW			249	249
Cash consideration	$ 30	CAD 40	$ 50	CAD 65
Portion allocated to property, plant and equipment	$ 17		$ 48										CAD 23	CAD 62
Pro forma earnings before interest and income taxes \| $									$ 0
New Creek Wind Project
ACQUISITIONS
Ownership interest acquired (as a percent)					100.00%										100.00%
Wind project capacity \| MW					103	103
Cash consideration					$ 36	CAD 48
Portion allocated to property, plant and equipment					$ 26										CAD 35
Massif du Sud Wind Project
ACQUISITIONS
Ownership interest acquired (as a percent)							30.00%					30.00%				50.00%
Cash consideration							CAD 102
Total ownership interest (as a percent)							80.00%					80.00%
Portion allocated to property, plant and equipment							CAD 97					CAD 97
Lac Alfred Wind Project
ACQUISITIONS
Ownership interest acquired (as a percent)								17.50%									50.00%
Cash consideration								CAD 121
Total ownership interest (as a percent)								67.50%
Portion allocated to property, plant and equipment								CAD 115