ACQUISITIONS AND DISPOSITIONS (Narrative) (Details) $ in Millions, $ in Millions							4 Months Ended
	May 31, 2024 CAD ($)	May 31, 2024 USD ($)	Mar. 06, 2024 CAD ($)	Mar. 06, 2024 USD ($)	Jan. 02, 2024 CAD ($) Facility	Jan. 02, 2024 USD ($) Facility	Jun. 30, 2024 CAD ($)	Jan. 02, 2024 USD ($)
Questar Gas Company
Business Acquisition [Line Items]
Ownership interest acquired (as percent)	100.00%	100.00%
Purchase price	$ 4,100	$ 3,000
Cash consideration	$ 4,144
EOG Acquisition
Business Acquisition [Line Items]
Purchase price			$ 5,800	$ 4,300
Revenues generated by acquiree							$ 439
Earnings generated by acquiree							$ 83
Cash consideration			$ 5,852
RNG Facilities
Business Acquisition [Line Items]
Purchase price					$ 1,348	$ 1,000
Number of production facilities acquired | Facility					6	6
Cash consideration					$ 584	$ 439
Remaining consideration payable, payment period (in years)					2 years	2 years
Contingent consideration payable					$ 757			$ 568