SEGMENTED INFORMATION (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segmented Information
Operating revenues	$ 11,038	$ 12,075
Commodity and gas distribution costs	(5,000)	(6,230)
Operating and administrative	(2,134)	(2,037)
Income/(loss) from equity investments	696	517
Other income/(expense)	(551)	102
Earnings/(loss) before interest, income taxes and depreciation and amortization	4,049	4,427
Depreciation and amortization	(1,193)	(1,146)
Interest expense	(905)	(905)
Income tax expense	(386)	(510)
Earnings	1,565	1,866
Capital expenditures	1,200	1,141
Energy Marketing Subsidiaries | Subsidiaries
Segmented Information
Operating revenues	332	520
Commodity and gas distribution costs	(322)	(499)
Business segments | Liquids Pipelines
Segmented Information
Operating revenues	6,882	7,298
Commodity and gas distribution costs	(3,635)	(4,132)
Operating and administrative	(1,107)	(1,135)
Income/(loss) from equity investments	253	248
Other income/(expense)	11	74
Earnings/(loss) before interest, income taxes and depreciation and amortization	2,404	2,353
Capital expenditures	289	280
Business segments | Gas Transmission
Segmented Information
Operating revenues	1,572	1,491
Commodity and gas distribution costs	(47)	0
Operating and administrative	(561)	(549)
Income/(loss) from equity investments	265	238
Other income/(expense)	36	25
Earnings/(loss) before interest, income taxes and depreciation and amortization	1,265	1,205
Capital expenditures	495	527
Business segments | Gas Distribution and Storage
Segmented Information
Operating revenues	2,131	2,625
Commodity and gas distribution costs	(1,004)	(1,612)
Operating and administrative	(379)	(309)
Income/(loss) from equity investments	0	0
Other income/(expense)	17	12
Earnings/(loss) before interest, income taxes and depreciation and amortization	765	716
Capital expenditures	304	264
Business segments | Renewable Power Generation
Segmented Information
Operating revenues	131	144
Commodity and gas distribution costs	(3)	(4)
Operating and administrative	(69)	(53)
Income/(loss) from equity investments	181	35
Other income/(expense)	17	14
Earnings/(loss) before interest, income taxes and depreciation and amortization	257	136
Capital expenditures	69	45
Eliminations and Other
Segmented Information
Operating revenues	322	517
Commodity and gas distribution costs	(311)	(482)
Operating and administrative	(18)	9
Income/(loss) from equity investments	(3)	(4)
Other income/(expense)	(632)	(23)
Earnings/(loss) before interest, income taxes and depreciation and amortization	(642)	17
Capital expenditures	$ 43	$ 25