XML 67 R41.htm IDEA: XBRL DOCUMENT v3.20.4
Property, Plant, and Equipment (Tables)
12 Months Ended
Dec. 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:
December 31,
thousandsEstimated Useful Life20202019
LandN/A$9,696 $9,495 
Gathering systems – pipelines30 years5,231,212 5,092,004 
Gathering systems – compressors15 years2,096,905 1,929,377 
Processing complexes and treating facilities25 years3,424,368 3,237,801 
Transportation pipeline and equipment
6 to 45 years
168,205 173,572 
Produced-water disposal systems20 years831,719 754,774 
Assets under constructionN/A176,834 486,584 
Other
3 to 40 years
702,806 672,064 
Total property, plant, and equipment12,641,745 12,355,671 
Less accumulated depreciation3,931,800 3,290,740 
Net property, plant, and equipment$8,709,945 $9,064,931