Property, Plant and Equipment (Notes)

3 Months Ended

6 Months Ended

Jun. 30, 2020

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

0

Property, Plant and Equipment

A summary of property, plant and equipment by classification is as follows:

	Depreciable Life	June 30, 2020		December 31, 2019
		(millions)
Gathering and transmission systems	20 — 50 Years	$	7,646	$	8,406
Processing, storage and terminal facilities	35 — 60 Years	4,939		5,305
Other	3 — 30 Years	567		585
Finance lease assets	4 — 7 Years	22		25
Construction work in progress		194		183
Property, plant and equipment		13,368		14,504
Accumulated depreciation		(5,252)		(5,693)
Property, plant and equipment, net		$	8,116	$	8,811

There were no construction projects with capitalized interest during the three months ended June 30, 2020. Capitalized interest on construction projects was $5 million for the three months ended June 30, 2019, and $2 million and $10 million for the six months ended June 30, 2020 and 2019, respectively.

Depreciation expense was $92 million and $99 million for the three months ended June 30, 2020 and 2019, respectively, and $189 million and $200 million for the six months ended June 30, 2020 and 2019, respectively.