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ACQUISITIONS AND DISPOSITIONS - Schedule of Supplemental Pro Forma Consolidated Financial Information (Details) - CAD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024
Questar Gas Company
Business Acquisition [Line Items]
Operating revenues	$ 14,882	$ 38,471
Earnings attributable to common shareholders	1,293	4,695
Public Service Company of North Carolina, Incorporated
Business Acquisition [Line Items]
Operating revenues	15,010	37,921
Earnings attributable to common shareholders	1,276	4,655
The East Ohio Gas Company
Business Acquisition [Line Items]
Operating revenues	14,882	37,568
Earnings attributable to common shareholders	$ 1,296	$ 4,614

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