SEGMENTED INFORMATION (Details) - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segmented Information
Operating revenues	$ 11,336	$ 10,432	$ 22,374	$ 22,507
Commodity and gas distribution costs	(5,482)	(4,917)	(10,482)	(11,147)
Operating and administrative	(2,308)	(2,028)	(4,442)	(4,065)
Income/(loss) from equity investments	489	478	1,185	995
Gain on disposition of equity investments	1,091	0	1,091	0
Other income (expense)	(31)	575	(582)	677
Earnings/(loss) before interest, income taxes and depreciation and amortization	5,095	4,540	9,144	8,967
Depreciation and amortization	(1,273)	(1,137)	(2,466)	(2,283)
Interest expense	(1,082)	(883)	(1,987)	(1,788)
Income tax expense	(739)	(519)	(1,125)	(1,029)
Earnings	2,001	2,001	3,566	3,867
Capital expenditures	1,364	976	2,564	2,117
Energy Marketing Subsidiaries | Subsidiaries
Segmented Information
Operating revenues	205	276	537	796
Commodity and gas distribution costs	(222)	(251)	(544)	(750)
Business segments | Liquids Pipelines
Segmented Information
Operating revenues	8,158	7,547	15,040	14,845
Commodity and gas distribution costs	(4,909)	(4,295)	(8,544)	(8,427)
Operating and administrative	(1,100)	(1,092)	(2,207)	(2,227)
Income/(loss) from equity investments	284	253	537	501
Gain on disposition of equity investments	0		0
Other income (expense)	17	14	28	88
Earnings/(loss) before interest, income taxes and depreciation and amortization	2,450	2,427	4,854	4,780
Capital expenditures	209	237	498	517
Business segments | Gas Transmission
Segmented Information
Operating revenues	1,492	1,410	3,064	2,901
Commodity and gas distribution costs	(41)	0	(88)	0
Operating and administrative	(604)	(588)	(1,165)	(1,137)
Income/(loss) from equity investments	164	199	429	437
Gain on disposition of equity investments	1,063		1,063
Other income (expense)	21	21	57	46
Earnings/(loss) before interest, income taxes and depreciation and amortization	2,095	1,042	3,360	2,247
Capital expenditures	666	343	1,161	870
Business segments | Gas Distribution and Storage
Segmented Information
Operating revenues	1,384	1,050	3,515	3,675
Commodity and gas distribution costs	(312)	(371)	(1,316)	(1,983)
Operating and administrative	(528)	(325)	(907)	(634)
Income/(loss) from equity investments	1	1	1	1
Gain on disposition of equity investments	0		0
Other income (expense)	22	12	39	24
Earnings/(loss) before interest, income taxes and depreciation and amortization	567	367	1,332	1,083
Capital expenditures	433	346	737	610
Business segments | Renewable Power Generation
Segmented Information
Operating revenues	106	150	237	294
Commodity and gas distribution costs	2	(2)	(1)	(6)
Operating and administrative	(71)	(62)	(140)	(115)
Income/(loss) from equity investments	45	27	226	62
Gain on disposition of equity investments	28		28
Other income (expense)	28	16	45	30
Earnings/(loss) before interest, income taxes and depreciation and amortization	138	129	395	265
Capital expenditures	48	23	117	68
Eliminations and Other
Segmented Information
Operating revenues	196	275	518	792
Eliminations and Other
Segmented Information
Operating revenues	196	275	518	792
Commodity and gas distribution costs	(222)	(249)	(533)	(731)
Operating and administrative	(5)	39	(23)	48
Income/(loss) from equity investments	(5)	(2)	(8)	(6)
Gain on disposition of equity investments	0		0
Other income (expense)	(119)	512	(751)	489
Earnings/(loss) before interest, income taxes and depreciation and amortization	(155)	575	(797)	592
Capital expenditures	$ 8	$ 27	$ 51	$ 52