PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT

	Weighted Average
December 31,	Depreciation Rate		2019		20181
(millions of Canadian dollars)
Pipelines	2.5	%	56,330		51,647
Facilities and equipment	2.7	%	29,287		27,149
Land and right-of-way2	2.0	%	2,947		2,614
Gas mains, services and other	2.7	%	12,194		12,088
Storage	2.3	%	2,748		2,730
Wind turbines, solar panels and other	4.1	%	4,914		5,015
Other	6.4	%	1,486		1,463
Under construction	—	%	4,057		9,698
Total property, plant and equipment3			113,963		112,404
Total accumulated depreciation			(20,240	)	(17,864	)
Property, plant and equipment, net			93,723		94,540

1 Asset categories were revised and collapsed in the current year. 2018 comparative figures have been reclassified to conform to current year's asset classifications.

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

3 Certain assets were reclassified as held for sale as at December 31, 2019 and December 31, 2018 (Note 8).

Depreciation expense for the years ended December 31, 2019, 2018 and 2017 was $3.0 billion, $2.9 billion and $2.9 billion, respectively.

IMPAIRMENT

Access Northeast Project

In 2019, we announced that we terminated the agreements with Eversource and National Grid related to the Access Northeast project. As a result, we recognized an impairment loss of $105 million for the year ended December 31, 2019, which is included in Impairment of long-lived assets in the Consolidated Statements of Earnings. Access Northeast is part of our Gas Transmission and Midstream segment.

Impairment charges were based on the amount by which the carrying values of the assets exceeded fair value, determined using expected discounted future cash flows.