CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - CAD ($) $ in Millions	Total	Preference shares (Note 21)	Common Shares	Additional paid-in capital	Deficit	Deficit Modified retrospective adoption of ASC	Accumulated other comprehensive income/(loss) (Note 23)	Reciprocal shareholding	Total Enbridge Inc. shareholders’ equity	Noncontrolling interests (Note 20)
Balance at beginning of year at Dec. 31, 2018		$ 7,747	$ 64,677	$ 0	$ (5,538)		$ 2,672	$ (88)		$ 3,965
Increase (Decrease) in Stockholders' Equity
Shares issued on exercise of stock options			69	(61)
Stock-based compensation				34
Repurchase of noncontrolling interest				65
Change in reciprocal interest				117
Other				32
Earnings/(loss) attributable to controlling interests	$ 5,705				5,705
Preference share dividends					(383)
Common share dividends declared					(6,125)
Dividends paid to reciprocal shareholder					18
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Other					9		48
Other comprehensive income/(loss) attributable to common shareholders, net of tax							(2,992)
Change in reciprocal interest								37
Earnings attributable to noncontrolling interests										122
Change in unrealized loss on cash flow hedges										(7)
Foreign currency translation adjustments										(108)
Redemption of noncontrolling interests										(300)
Other comprehensive loss attributable to noncontrolling interests, net of tax										(115)
Comprehensive income attributable to noncontrolling interests										7
Distributions										(254)
Contributions										12
Repurchase of noncontrolling interest	$ (300)									(65)
Other										(1)
Balance at end of year at Dec. 31, 2019	$ 69,407	7,747	64,746	187	(6,314)		(272)	(51)	$ 66,043	3,364
Increase (Decrease) in Stockholders' Equity
Dividends paid per common share (in CAD per share)	$ 2.95
Shares issued on exercise of stock options			22	(21)
Stock-based compensation				30
Repurchase of noncontrolling interest				0
Change in reciprocal interest				76
Other				5
Earnings/(loss) attributable to controlling interests	$ 3,363				3,363
Preference share dividends					(380)
Common share dividends declared					(6,612)
Dividends paid to reciprocal shareholder					17
Other					(3)		0
Other comprehensive income/(loss) attributable to common shareholders, net of tax							(1,129)
Change in reciprocal interest								22
Earnings attributable to noncontrolling interests										53
Change in unrealized loss on cash flow hedges										(6)
Foreign currency translation adjustments										(25)
Redemption of noncontrolling interests										(112)
Other comprehensive loss attributable to noncontrolling interests, net of tax										(31)
Comprehensive income attributable to noncontrolling interests										22
Distributions										(300)
Contributions										23
Repurchase of noncontrolling interest										0
Other										(1)
Balance at end of year at Dec. 31, 2020	$ 64,363	$ 7,747	64,768	277	(9,995)	$ (66)	(1,401)	(29)	61,367	2,996
Increase (Decrease) in Stockholders' Equity
Dividends paid per common share (in CAD per share)	$ 3.24
Shares issued on exercise of stock options			31	(23)
Stock-based compensation				28
Repurchase of noncontrolling interest				0
Change in reciprocal interest				98
Other				(15)
Earnings/(loss) attributable to controlling interests	$ 6,189				6,189
Preference share dividends					(373)
Common share dividends declared					(6,818)
Dividends paid to reciprocal shareholder					8
Other					0		0
Other comprehensive income/(loss) attributable to common shareholders, net of tax							305
Change in reciprocal interest								29
Earnings attributable to noncontrolling interests										125
Change in unrealized loss on cash flow hedges										(15)
Foreign currency translation adjustments										(15)
Redemption of noncontrolling interests										(293)
Other comprehensive loss attributable to noncontrolling interests, net of tax										(30)
Comprehensive income attributable to noncontrolling interests										95
Distributions										(271)
Contributions										15
Repurchase of noncontrolling interest										0
Other										0
Balance at end of year at Dec. 31, 2021	$ 63,368		$ 64,799	$ 365	$ (10,989)		$ (1,096)	$ 0	$ 60,826	$ 2,542
Increase (Decrease) in Stockholders' Equity
Dividends paid per common share (in CAD per share)	$ 3.34