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Security Shareholders Entitlement Share Ratio

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Shareholder Entitlement Cash Payment Per Share

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Amount of other increase (decrease) in additional paid in capital (APIC).

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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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.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.

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The cash outflow for reacquisition of callable preferred stock.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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The percentage rate used to calculate dividend payments on preferred stock.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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The cash inflow from issuance of preferred stock that is classified as callable.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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NONCONTROLLING INTERESTS - NONCONTROLLING INFORMATION (Details) $ / shares in Units, shares in Millions, $ in Millions									3 Months Ended	12 Months Ended
	Dec. 16, 2020 CAD ($) $ / shares	Mar. 20, 2019 CAD ($) $ / shares	Dec. 20, 2018 CAD ($)	Dec. 17, 2018 CAD ($)	Nov. 07, 2018 CAD ($)	Sep. 17, 2018 $ / shares	Aug. 24, 2018	Jan. 22, 2018 shares	Sep. 30, 2018 CAD ($)	Dec. 31, 2020 CAD ($) $ / shares	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 CAD ($)	Jul. 31, 2018
NONCONTROLLING INTERESTS
Proceeds from issuance of preferred stock		$ 300
Decrease in noncontrolling interests										$ 112	$ 300
Noncontrolling interests										2,996	3,364
Spectra Energy Partners, LP
NONCONTROLLING INTERESTS
Security shareholders entitlement share ratio							1.111
Noncontrolling interests				$ 3,900
Increase (decrease) in noncontrolling interest				(3,000)
Increase (decrease) to additional paid in capital				(642)
Increase (decrease) to deferred income taxes				$ (167)
Enbridge Energy Partners, L.P.
NONCONTROLLING INTERESTS
Security shareholders entitlement share ratio						0.335
Noncontrolling interests			$ 3,000
Enbridge Energy Management, L.L.C. (EEM)
NONCONTROLLING INTERESTS
Security shareholders entitlement share ratio						0.335
Noncontrolling interests			1,300
Enbridge Energy Partners and Enbridge Energy Management
NONCONTROLLING INTERESTS
Increase (decrease) in noncontrolling interest			185
Increase (decrease) to additional paid in capital			(3,700)
Increase (decrease) to deferred income taxes			$ (707)
Enbridge Income Fund
NONCONTROLLING INTERESTS
Decrease in noncontrolling interests					$ 4,500
Security shareholders entitlement share ratio						0.735
Increase (decrease) to additional paid in capital					(25)
Shareholder entitlement cash payment per share (CAD per share) \| $ / shares						$ 0.45
Purchase price					$ 4,500
Redeemable noncontrolling interests												$ 0
Preference shares (Note 21)
NONCONTROLLING INTERESTS
Dividend payment		$ 4
Discontinued Operations, Disposed of by Sale
NONCONTROLLING INTERESTS
Increase (decrease) in noncontrolling interest									$ 1,200
Increase (decrease) to additional paid in capital									79
Increase (decrease) to deferred income taxes									$ 27
Canadian Renewable Assets \| Discontinued Operations, Disposed of by Sale
NONCONTROLLING INTERESTS
Noncontrolling interest (percent)													49.00%
United States Renewable Assets \| Discontinued Operations, Disposed of by Sale
NONCONTROLLING INTERESTS
Noncontrolling interest (percent)													49.00%
Other Restructuring
NONCONTROLLING INTERESTS
Increase (decrease) to additional paid in capital												1,100
Increase (decrease) to deferred income taxes												333
Stock issued during period, shares, conversion of units (in shares) \| shares								172.5
Noncontrolling interest, restructuring												$ 1,500
Westcoast Energy Inc.
NONCONTROLLING INTERESTS
Noncontrolling interests										$ 408	$ 527
Preference Shares, Series 7 \| Preference shares (Note 21)
NONCONTROLLING INTERESTS
Dividend rate (percent)		5.50%								4.45%
Redemption price (in dollars per shares) \| $ / shares		$ 25.00								$ 25
Series 8 Preferred Stock \| Preference shares (Note 21)
NONCONTROLLING INTERESTS
Dividend rate (percent)		5.60%
Redemption price (in dollars per shares) \| $ / shares		$ 25.00
Series10 Preferred Stock \| Preference shares (Note 21)
NONCONTROLLING INTERESTS
Redemption price (in dollars per shares) \| $ / shares	$ 25.00
Series10 Preferred Stock \| Westcoast Energy Inc. \| Preference shares (Note 21)
NONCONTROLLING INTERESTS
Par value of redeemable interest	$ 115