PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

	Weighted Average
December 31,	Depreciation Rate		2018		2017
(millions of Canadian dollars)
Pipelines	2.6	%	50,078		47,720
Pumping equipment, buildings, tanks and other	3.0	%	16,935		16,610
Land and right-of-way1	2.7	%	2,603		2,538
Gas mains, services and other	3.2	%	17,474		17,026
Compressors, meters and other operating equipment	1.7	%	5,893		5,774
Processing and treating plants	1.5	%	1,634		1,440
Storage	1.9	%	1,713		1,545
Wind turbines, solar panels and other	4.2	%	5,063		4,804
Power transmission	2.6	%	383		365
Vehicles, office furniture, equipment and other buildings and improvements	5.9	%	630		390
Under construction	—		9,778		7,601
Total property, plant and equipment2			112,184		105,813
Total accumulated depreciation			(17,644	)	(15,102	)
Property, plant and equipment, net			94,540		90,711

1 The measurement of weighted average depreciation rate excludes non-depreciable assets.

2 Certain assets were reclassified as held for sale as at December 31, 2018 and December 31, 2017 (Note 8).