v3.10.0.1
Segment Disclosures (Segment Reporting Information By Segment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Revenues $ 2,826,573 $ 2,507,661 $ 2,205,410
Operating expenses 649,436 577,978 528,672
Cost of product sales 704,313 635,617 493,338
Earnings of non-controlled entities (181,117) (120,994) (78,696)
Operating margin 1,653,941 1,415,060 1,262,096
Depreciation and amortization expense 265,077 196,630 178,142
G&A expenses 194,283 165,717 147,165
Operating profit 1,194,581 1,052,713 936,789
Additions to long-lived assets 562,296 572,744 653,528
Total assets 7,747,537 7,394,375 6,772,073
Goodwill 53,260 53,260 53,260
Investments in non-controlled entities 1,076,306 1,082,511 931,255
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Additions to long-lived assets 506,354 564,687 646,363
Total assets 7,491,246 7,188,235 6,712,139
Operating Segments [Member] | Refined Products Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 2,025,636 1,814,568 1,564,892
Operating expenses 424,851 400,439 380,347
Cost of product sales 650,071 586,751 459,989
Earnings of non-controlled entities (16,039) 1,632 968
Operating margin 966,753 825,746 723,588
Depreciation and amortization expense 168,954 109,434 103,388
G&A expenses 118,491 103,225 91,372
Operating profit 679,308 613,087 528,828
Additions to long-lived assets 298,502 269,369 291,202
Total assets 3,715,653 3,499,492 3,289,600
Goodwill 38,369 38,369 38,369
Investments in non-controlled entities 37,574 29,578 31,029
Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 611,448 507,458 451,540
Operating expenses 166,213 120,920 88,528
Cost of product sales 44,128 41,325 31,657
Earnings of non-controlled entities (162,233) (120,173) (76,972)
Operating margin 563,340 465,386 408,327
Depreciation and amortization expense 54,318 48,796 38,081
G&A expenses 51,523 41,490 36,165
Operating profit 457,499 375,100 334,081
Additions to long-lived assets 142,108 168,306 250,433
Total assets 2,710,068 2,817,186 2,631,407
Goodwill 12,082 12,082 12,082
Investments in non-controlled entities 783,486 961,032 886,920
Operating Segments [Member] | Marine Storage Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 193,180 189,038 189,785
Operating expenses 68,010 65,296 65,559
Cost of product sales 10,114 7,541 1,692
Earnings of non-controlled entities (2,845) (2,453) (2,692)
Operating margin 117,901 118,654 125,226
Depreciation and amortization expense 35,858 33,126 31,718
G&A expenses 24,269 21,002 19,628
Operating profit 57,774 64,526 73,880
Additions to long-lived assets 65,744 127,012 104,728
Total assets 1,065,525 871,557 791,132
Goodwill 2,809 2,809 2,809
Investments in non-controlled entities 255,246 91,901 13,306
Corporate, Non-Segment [Member]      
Segment Reporting Information [Line Items]      
Total assets 256,291 206,140 59,934
Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues (3,691) (3,403) (807)
Operating expenses (9,638) (8,677) (5,762)
Cost of product sales 0 0 0
Earnings of non-controlled entities 0 0 0
Operating margin 5,947 5,274 4,955
Depreciation and amortization expense 5,947 5,274 4,955
G&A expenses 0 0 0
Operating profit 0 0 0
Service [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,878,988 1,731,775 1,591,119
Service [Member] | Operating Segments [Member] | Refined Products Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,151,980 1,096,040 1,002,368
Service [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 549,849 458,455 407,837
Service [Member] | Operating Segments [Member] | Marine Storage Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 180,850 180,683 181,721
Service [Member] | Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues (3,691) (3,403) (807)
Product [Member]      
Segment Reporting Information [Line Items]      
Revenues 927,220 758,206 599,602
Product [Member] | Operating Segments [Member] | Refined Products Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 872,144 717,140 561,759
Product [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 46,767 35,053 31,170
Product [Member] | Operating Segments [Member] | Marine Storage Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 8,309 6,013 6,673
Product [Member] | Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Product and Service, Other [Member]      
Segment Reporting Information [Line Items]      
Revenues 20,365 17,680 14,689
Product and Service, Other [Member] | Operating Segments [Member] | Refined Products Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,512 1,388 765
Product and Service, Other [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 14,832 13,950 12,533
Product and Service, Other [Member] | Operating Segments [Member] | Marine Storage Segment [Member]      
Segment Reporting Information [Line Items]      
Revenues 4,021 2,342 1,391
Product and Service, Other [Member] | Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues $ 0 $ 0 $ 0