COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 31, 2023 CAD ($)
Purchase of services, pipe and other materials, including transportation
Total	$ 11,018
Less than 1 year	4,193
2 years	1,421
3 years	1,206
4 years	1,039
5 years	996
Thereafter	2,163
Maintenance agreements2
Total	473
Less than 1 year	51
2 years	52
3 years	52
4 years	53
5 years	34
Thereafter	231
Right-of-ways commitments3
Total	1,328
Less than 1 year	44
2 years	45
3 years	45
4 years	45
5 years	45
Thereafter	1,104
Total
Total	12,819
Less than 1 year	4,288
2 years	1,518
3 years	1,303
4 years	1,137
5 years	1,075
Thereafter	$ 3,498