COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 31, 2022 CAD ($)
Annual debt maturities
Total	$ 78,742
Less than 1 year	6,024
2 years	8,220
3 years	6,051
4 years	3,730
5 years	10,344
Thereafter	44,373
Purchase of services, pipe and other materials, including transportation
Total	10,661
Less than 1 year	3,553
2 years	1,513
3 years	1,070
4 years	1,001
5 years	767
Thereafter	2,757
Maintenance agreements3
Total	536
Less than 1 year	53
2 years	53
3 years	53
4 years	53
5 years	55
Thereafter	269
Right-of-ways commitments
Total	1,474
Less than 1 year	45
2 years	45
3 years	46
4 years	46
5 years	46
Thereafter	1,246
Total
Total	91,413
Less than 1 year	9,675
2 years	9,831
3 years	7,220
4 years	4,830
5 years	11,212
Thereafter	$ 48,645