v3.20.4
PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
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 
Capitalized interest costs added to property, plant and equipment, including amounts related to discontinued operations, totaled $4.9 million, $8.9 million and $7.8 million for the years ended December 31, 2020, 2019 and 2018, respectively. Depreciation and amortization expense for property, plant and equipment totaled $228.8 million, $226.0 million and $243.5 million for the years ended December 31, 2020, 2019 and 2018, respectively, including depreciation and amortization expense reported in “(Loss) income from discontinued operations, net of tax” on the consolidated statements of (loss) income.