v3.20.4
PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
Property, plant and equipment consisted of the following:
Estimated Useful LivesDecember 31,
 20202019
 (Years)(Thousands of Dollars)
Land, buildings and improvements0-40$440,358 $444,156 
Pipelines, storage and terminals15-405,253,507 5,162,426 
Rights-of-way20-40359,441 350,026 
Construction in progress-111,436 230,536 
Total6,164,742 6,187,144 
Less accumulated depreciation and amortization(2,207,230)(2,068,165)
Property, plant and equipment, net$3,957,512 $4,118,979