Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 04, 2022	Jun. 30, 2021
Entity Listings [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-10934
Entity Registrant Name	ENBRIDGE INC.
Entity Incorporation, State or Country Code	Z4
Entity Tax Identification Number	98-0377957
Entity Address, Address Line One	200, 425 - 1st Street S.W.
Entity Address, City or Town	Calgary
Entity Address, State or Province	AB
Entity Address, Country	CA
Entity Address, Postal Zip Code	T2P 3L8
City Area Code	403
Local Phone Number	231-3900
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 77.7
Entity Common Stock, Shares Outstanding		2,026,274,277
Amendment Description	Enbridge Inc., a corporation existing under the Canada Business Corporations Act, qualifies as a foreign private issuer in the United States for purposes of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Although, as a foreign private issuer, Enbridge Inc. is not required to do so, Enbridge Inc. currently files annual reports on Form 10-K, quarterly reports on Form 10-Q, and current reports on Form 8-K with the Securities and Exchange Commission (“SEC”) instead of filing the reporting forms available to foreign private issuers. Enbridge Inc. prepares and files a management proxy circular and related material under Canadian requirements. As Enbridge Inc.’s management proxy circular is not filed pursuant to Regulation 14A, Enbridge Inc. may not incorporate by reference information required by Part III of its Form 10-K from its management proxy circular. Enbridge Inc. filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “Original Filing”) on February 11, 2022. In reliance upon and as permitted by Instruction G(3) to Form 10-K, Enbridge Inc. is filing this Amendment No. 1 on Form 10-K/A in order to include in the Original Filing the Part III information not previously included in the Original Filing. Except as stated herein, no other changes have been made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing, and, other than the information provided in Parts III and IV hereof, we have not updated the disclosures contained in the Original Filing to reflect any events which occurred at a date subsequent to the filing of the Original Filing. In this Amendment No. 1 on Form 10-K/A, the terms “Enbridge,” “we,” “us,” “our” and “Company” mean Enbridge Inc. “Board of Directors” or “Board” means the Board of Directors of Enbridge. “Enbridge shares” or “common shares” mean common shares of Enbridge. All dollar amounts are in Canadian dollars (“C$” or “$”) unless stated otherwise. US$ means United States of America (“U.S.”) dollars. All references to our websites and to our Canadian management proxy circular, dated March 2, 2022 and filed with the SEC on March 7, 2022 as Exhibit 99.1 to our Current Report on Form 8-K (the “Circular”) contained herein do not constitute incorporation by reference of information contained on such websites and the Circular and such information should not be considered part of this document.
Entity Central Index Key	0000895728
Document Fiscal Year Focus	2021
Amendment Flag	true
Document Fiscal Period Focus	FY
ICFR Auditor Attestation Flag	true
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	271
Auditor Location	Calgary, Canada
Common Shares
Entity Listings [Line Items]
Title of 12(b) Security	Common Shares
Trading Symbol	ENB
Security Exchange Name	NYSE
6.375% Fixed-to-Floating Rate Subordinated Notes Series 2018-B due 2078
Entity Listings [Line Items]
Title of 12(b) Security	6.375% Fixed-to-Floating Rate Subordinated Notes Series 2018-B due 2078
Trading Symbol	ENBA
Security Exchange Name	NYSE