Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Transportation and terminals revenue	$ 1,544,746	$ 1,459,267	$ 1,188,452
Product sales revenue	629,836	878,974	744,669
Affiliate management fee revenue	13,871	22,111	14,609
Total revenue	2,188,453	2,360,352	1,947,730
Costs and expenses:
Operating	525,902	500,901	396,194
Cost of product sales	447,273	594,585	578,029
Depreciation and amortization	166,812	161,741	142,230
General and administrative	151,329	148,288	132,496
Total costs and expenses	1,291,316	1,405,515	1,248,949
Earnings of non-controlled entities	66,483	19,394	6,275
Operating profit	963,620	974,231	705,056
Interest expense	158,895	145,862	132,887
Interest income	(1,276)	(1,540)	(342)
Interest capitalized	(14,442)	(22,803)	(14,339)
Other expense (income)	(1,015)	8,573	0
Income before provision for income taxes	821,458	844,139	586,850
Provision for income taxes	2,336	4,620	4,613
Net income	$ 819,122	$ 839,519	$ 582,237
Basic net income per limited partner unit (in dollars per unit)	$ 3.60	$ 3.69	$ 2.57
Diluted net income per limited partner unit (in dollars per unit)	$ 3.59	$ 3.69	$ 2.56
Weighted average number of limited partner units outstanding used for basic net income per unit calculation (in units)	227,550	227,260	226,829
Weighted average number of limited partner units outstanding used for diluted net income per unit calculation (in units)	227,888	227,626	227,094