SEGMENTED INFORMATION (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segmented Information
Operating revenues	$ 18,502	$ 11,038
Operating and administrative	(2,471)	(2,134)
Income from equity investments	729	696
Earnings before interest, income taxes and depreciation and amortization	5,889	4,691
Depreciation and amortization	(1,408)	(1,193)
Interest expense	(1,334)	(905)
Earnings before income taxes	3,187	1,951
Capital expenditures	1,754	1,200
Property, plant and equipment, net	131,583		$ 131,104
Business Segments
Segmented Information
Operating revenues	17,975	10,716
Commodity and gas distribution costs	(10,492)	(4,689)
Operating and administrative	(2,502)	(2,116)
Income from equity investments	733	699
Other income	175	81
Business Segments | Liquids Pipelines
Segmented Information
Operating revenues	12,184	6,882
Commodity and gas distribution costs	(8,850)	(3,635)
Operating and administrative	(1,128)	(1,107)
Income from equity investments	368	253
Other income	19	11
Earnings before interest, income taxes and depreciation and amortization	2,593	2,404
Capital expenditures	309	289
Property, plant and equipment, net	53,693		53,863
Business Segments | Gas Transmission
Segmented Information
Operating revenues	1,715	1,572
Commodity and gas distribution costs	(11)	(47)
Operating and administrative	(524)	(561)
Income from equity investments	232	265
Other income	61	36
Earnings before interest, income taxes and depreciation and amortization	1,473	1,265
Capital expenditures	604	495
Property, plant and equipment, net	34,940		34,683
Business Segments | Gas Distribution and Storage
Segmented Information
Operating revenues	3,956	2,131
Commodity and gas distribution costs	(1,634)	(1,004)
Operating and administrative	(772)	(379)
Income from equity investments	1	0
Other income	49	17
Earnings before interest, income taxes and depreciation and amortization	1,600	765
Capital expenditures	661	304
Property, plant and equipment, net	38,909		38,636
Business Segments | Renewable Power Generation
Segmented Information
Operating revenues	120	131
Commodity and gas distribution costs	3	(3)
Operating and administrative	(78)	(69)
Income from equity investments	132	181
Other income	46	17
Earnings before interest, income taxes and depreciation and amortization	223	257
Capital expenditures	145	69
Property, plant and equipment, net	3,720		3,612
Eliminations and Other
Segmented Information
Operating revenues	40	(642)
Capital expenditures	35	$ 43
Property, plant and equipment, net	$ 321		$ 310