Property, Plant and Equipment (Notes)

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

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

	Depreciable Life	March 31, 2020		December 31, 2019
		(millions)
Gathering and transmission systems	20 — 50 Years	$	7,677	$	8,406
Processing, storage and terminal facilities	35 — 60 Years	4,873		5,305
Other	3 — 30 Years	577		585
Finance lease assets	4 — 7 Years	21		25
Construction work in progress		194		183
Property, plant and equipment		13,342		14,504
Accumulated depreciation		(5,162)		(5,693)
Property, plant and equipment, net		$	8,180	$	8,811

Interest capitalized on construction projects was $2 million and $5 million for the three months ended March 31, 2020 and 2019, respectively.

Depreciation expense was $97 million and $101 million for the three months ended March 31, 2020 and 2019, respectively.