v3.10.0.1
SEGMENT INFORMATION Table 2 - Assets by Reportable Segment (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Segment Information    
Total assets $ 6,646,969 $ 6,535,233
Other Partnership Assets    
Segment Information    
Total assets 192,850 188,507
Operating Segments [Member]    
Segment Information    
Total assets 6,454,119 6,346,726
Operating Segments [Member] | Pipeline Segment    
Segment Information    
Total assets 3,581,710 3,492,417
Operating Segments [Member] | Storage Segment    
Segment Information    
Total assets 2,754,290 2,735,563
Operating Segments [Member] | Fuels Marketing Segment    
Segment Information    
Total assets $ 118,119 $ 118,746