Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Transportation and terminals revenue		$ 433,239	$ 392,240	$ 825,910	$ 762,315
Product sales revenue		182,004	123,689	427,624	270,251
Affiliate management fee revenue		4,197	2,968	7,980	6,147
Total revenue		619,440	518,897	1,261,514	1,038,713
Costs and expenses:
Operating		145,294	134,183	276,886	257,096
Cost of product sales		145,975	95,703	318,851	209,288
Depreciation and amortization		48,896	43,302	96,194	87,056
General and administrative		43,393	34,554	83,674	75,230
Total costs and expenses		383,558	307,742	775,605	628,670
Earnings of non-controlled entities		25,576	15,339	47,022	32,967
Operating profit		261,458	226,494	532,931	443,010
Interest expense		51,546	48,686	102,758	92,410
Interest income		(256)	(404)	(548)	(765)
Interest capitalized		(3,183)	(7,130)	(7,380)	(13,266)
Gain on exchange of interest in non-controlled entity		0	(1,244)	0	(28,144)
Other expense (income)		2,043	(1,958)	3,213	(3,710)
Income before provision for income taxes		211,308	188,544	434,888	396,485
Provision for income taxes		908	685	1,752	1,556
Net income		$ 210,400	$ 187,859	$ 433,136	$ 394,929
Basic net income per limited partner unit		$ 0.92	$ 0.82	$ 1.90	$ 1.73
Diluted net income per limited partner unit		$ 0.92	$ 0.82	$ 1.90	$ 1.73
Weighted average number of limited partner units outstanding used for basic net income per unit calculation(1)	[1]	228,192	227,952	228,151	227,889
Weighted average number of limited partner units outstanding used for diluted net income per unit calculation(1)	[1]	228,245	227,983	228,202	227,921

[1] See Note 10–Long-Term Incentive Plan for additional information regarding our weighted average unit calculations.