DEBT - Schedule of Long-term Debt Issuances (Details) - 12 months ended Dec. 31, 2021 $ in Millions, $ in Millions	CAD ($)	USD ($)
Debt Instrument [Line Items]
Principal amount	$ 3,200	$ 3,900
Enbridge Gas Inc. | 2.35% medium-term notes due September 2031
Debt Instrument [Line Items]
Principal amount	475
Enbridge Gas Inc. | 3.20% medium-term notes due September 2051
Debt Instrument [Line Items]
Principal amount	425
Enbridge Pipelines Inc. | 2.82% medium-term notes due May 2031
Debt Instrument [Line Items]
Principal amount	400
Enbridge Pipelines Inc. | 4.20% medium-term notes due May 2051
Debt Instrument [Line Items]
Principal amount	400
Spectra Energy Partners, LP | 2.50% senior notes due September 2031
Debt Instrument [Line Items]
Principal amount		400
Enbridge Inc. | Floating rate senior-notes due February 20231
Debt Instrument [Line Items]
Principal amount		500
Enbridge Inc. | 2.50% Sustainability-linked senior notes due August 2033
Debt Instrument [Line Items]
Principal amount		1,000
Enbridge Inc. | 3.40% senior notes due August 2051
Debt Instrument [Line Items]
Principal amount		500
Enbridge Inc. | 3.10% Sustainability-linked medium-term notes due September 2033
Debt Instrument [Line Items]
Principal amount	1,100
Enbridge Inc. | 4.10% medium-term notes due September 2051
Debt Instrument [Line Items]
Principal amount	$ 400
Enbridge Inc. | 0.55% senior notes due October 2023
Debt Instrument [Line Items]
Principal amount		500
Enbridge Inc. | 1.60% senior notes due October 2026
Debt Instrument [Line Items]
Principal amount		500
Enbridge Inc. | 3.40% senior notes due August 2051
Debt Instrument [Line Items]
Principal amount		$ 500
Enbridge Inc. | SOFR | Floating rate senior-notes due February 20231
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	0.40%