CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue:
Total revenue from contracts with customers	$ 783,196	$ 670,461	$ 1,763,458	$ 1,464,976
Total revenue	940,839	810,201	2,123,944	1,779,474
Costs and expenses:
Cost of product sales	552,399	392,578	1,337,726	940,628
Operating expenses	156,505	162,107	311,373	323,529
Depreciation and amortization	66,569	64,838	130,707	130,326
General and administrative	21,792	24,346	45,081	46,083
Other, net	(2,123)	(4,422)	(16,153)	(4,422)
Total costs and expenses	795,142	639,447	1,808,734	1,436,144
Operating income	145,697	170,754	315,210	343,330
Other income (expense):
Earnings from equity investments	8,265	3,120	15,754	13,478
Interest and debt expense	(59,566)	(56,424)	(118,671)	(112,309)
Other expense	(297)	(32)	(612)	(550)
Total other expense, net	(51,598)	(53,336)	(103,529)	(99,381)
Income before taxes	94,099	117,418	211,681	243,949
Income tax expense	(782)	(1,039)	(1,272)	(1,261)
Net income	93,317	116,379	210,409	242,688
Less: Net income attributable to noncontrolling interests	(1,413)	(3,657)	(6,132)	(6,390)
Net income attributable to Buckeye Partners, L.P.	$ 91,904	$ 112,722	$ 204,277	$ 236,298
Earnings per unit attributable to Buckeye Partners, L.P.:
Basic (in dollars per share)	$ 0.59	$ 0.80	$ 1.34	$ 1.68
Diluted (in dollars per share)	$ 0.59	$ 0.80	$ 1.33	$ 1.67
Weighted average units outstanding:
Basic (in shares)	153,258	140,826	151,093	140,603
Diluted (in shares)	153,989	141,505	151,770	141,253
Product sales
Revenue:
Total revenue from contracts with customers	$ 556,850	$ 399,805	$ 1,349,037	$ 965,225
Transportation, storage and other services
Revenue:
Total revenue from contracts with customers	$ 383,989	$ 410,396	$ 774,907	$ 814,249