Property, Plant, and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment Table

A summary of the historical cost of property, plant, and equipment is as follows:

thousands	Estimated Useful Life	March 31,   2020		December 31,   2019
Land	n/a	$	9,495	$	9,495
Gathering systems – pipelines	30 years	5,163,286		5,092,004
Gathering systems – compressors	15 years	2,006,896		1,929,377
Processing complexes and treating facilities	25 years	3,370,462		3,237,801
Transportation pipeline and equipment	6 to 45 years	171,111		173,572
Produced-water disposal systems	20 years	791,882		754,774
Assets under construction	n/a	337,000		486,584
Other	3 to 40 years	695,225		672,064
Total property, plant, and equipment		12,545,357		12,355,671
Less accumulated depreciation		3,558,626		3,290,740
Net property, plant, and equipment		$	8,986,731	$	9,064,931