Cumulative number of shares issued through the balance sheet date under the share-based compensation plan.

No definition available.

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- Definition

Represents the number of common shares for each stock unit granted under the share-based compensation plan.

+ References

No definition available.

+ Details

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- Definition

Represents the number of share-based compensation plans of the entity.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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.

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Details

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STOCK OPTION AND STOCK UNIT PLANS - INCENTIVE PLANS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 CAD ($) compensation_plan shares	Dec. 31, 2017 CAD ($)	Dec. 31, 2016 CAD ($)
STOCK OPTION AND STOCK UNIT PLANS
Number of long-term incentive compensation plans \| compensation_plan	4
Compensation expense \| $	$ 106	$ 165	$ 130
2002 ISO plan
STOCK OPTION AND STOCK UNIT PLANS
Maximum number of common shares reserved for issuance under the share-based compensation plan (in shares)	60,000,000
Number of shares issued to date under the share-based compensation plan (in shares)	50,000,000
2007 ISO and PSO plans
STOCK OPTION AND STOCK UNIT PLANS
Maximum number of common shares reserved for issuance under the share-based compensation plan (in shares)	71,000,000
Number of shares issued to date under the share-based compensation plan (in shares)	17,000,000
PSU and RSU plans
STOCK OPTION AND STOCK UNIT PLANS
Number of common shares for each stock unit granted (in shares)	1