DEBT - Narrative (Details) € in Millions, $ in Millions					1 Months Ended				9 Months Ended
	Sep. 30, 2024 USD ($)	May 31, 2024 USD ($)	Mar. 06, 2024 USD ($)	Jan. 02, 2024 USD ($)	Oct. 31, 2024 CAD ($)	Jul. 31, 2024 CAD ($)	Jun. 30, 2024 USD ($)	Apr. 30, 2024 EUR (€)	Sep. 30, 2024 CAD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)	Sep. 30, 2024 USD ($)	Mar. 31, 2024 CAD ($)	Dec. 31, 2023 CAD ($)
Line of Credit Facility [Line Items]
Commitment fee percentage									0.10%	0.10%	0.10%
Long-term debt and lease obligation									$ 87,320,000,000					$ 74,715,000,000
Increase (decrease) from cumulative fair value adjustments									$ 474,000,000					514,000,000
Subsequent event
Line of Credit Facility [Line Items]
Line of credit facility, increase					$ 200,000,000
Debt Instrument Interest Rate Terms Period One | Enbridge Inc.
Line of Credit Facility [Line Items]
Debt instrument maturity period (in years)									5 years 6 months	5 years 6 months	5 years 6 months
Spread on variable rate (in percent)									3.12%	3.12%	3.12%
Debt Instrument Interest Rate Terms Period Two | Enbridge Inc.
Line of Credit Facility [Line Items]
Debt instrument maturity period (in years)									9 years 9 months	9 years 9 months	9 years 9 months
Spread on variable rate (in percent)									2.97%	2.97%	2.97%
Long-Term Debt
Line of Credit Facility [Line Items]
Debt instrument, face amount									$ 1,800,000,000			$ 5,100
Principal amount								€ 23	800,000,000	$ 3,600	€ 23
EOG Acquisition
Line of Credit Facility [Line Items]
Debt increased			$ 1,900
Increase (decrease) from cumulative fair value adjustments									(451,000,000)
RNG Facilities
Line of Credit Facility [Line Items]
Debt increased				$ 568
Questar Acquisition
Line of Credit Facility [Line Items]
Debt increased		$ 1,000
Increase (decrease) from cumulative fair value adjustments									(293,000,000)
PSNC Acquisation
Line of Credit Facility [Line Items]
Debt increased	$ 1,100
Increase (decrease) from cumulative fair value adjustments									(156,000,000)
Commercial paper and credit facility draws
Line of Credit Facility [Line Items]
Long-term debt and lease obligation									6,800,000,000					3,800,000,000
Fixed-to-floating subordinated term notes | Subordinated term notes
Line of Credit Facility [Line Items]
Subordinated debt									14,800,000,000					13,000,000,000.0
Committed credit facilities
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									$ 23,738,000,000
Term out option period (in years)									1 year	1 year	1 year
Unutilized amount of facility									$ 15,202,000,000
Committed credit facilities | Enbridge Inc.
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									8,835,000,000
Unutilized amount of facility									4,842,000,000
Committed credit facilities | Enbridge Gas Inc.
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									2,500,000,000
Unutilized amount of facility									1,570,000,000
Committed credit facilities | Enbridge Pipelines Inc.
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									2,000,000,000
Unutilized amount of facility									905,000,000
Committed credit facilities | Term Loan Maturing In March 2049
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity													$ 200,000,000
Committed credit facilities | 364-day extendible credit facility | Enbridge Gas Inc.
Line of Credit Facility [Line Items]
Debt instrument maturity period (in years)						364 days
Term out option period (in years)						1 year
Committed credit facilities | 364-day extendible credit facility | Enbridge Pipelines Inc.
Line of Credit Facility [Line Items]
Debt instrument maturity period (in years)						364 days
Term out option period (in years)						1 year
Uncommitted demand credit facilities
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									1,300,000,000					1,100,000,000
Unutilized amount of facility									$ 859,000,000					$ 572,000,000
Non-Revolving Term Loan Facility | Non-Revolving Term Loan Facility Maturing In June 2029
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity							$ 250
Debt instrument maturity period (in years)							5 years
Revolving credit facility | 364-day extendible credit facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity						$ 8,800,000,000
Debt instrument maturity period (in years)						364 days
Term out option period (in years)						1 year
Revolving credit facility | Term Loan Maturing In July 2026
Line of Credit Facility [Line Items]
Debt instrument maturity period (in years)						3 years
Revolving credit facility | Five Year Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity						$ 7,800,000,000
Debt instrument maturity period (in years)						5 years