CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUES
Total revenues	$ 8,080	$ 6,078	$ 16,478	$ 12,745
COSTS AND EXPENSES
Purchases and related costs	7,551	5,320	15,070	10,912
Field operating costs	312	304	605	593
General and administrative expenses	80	68	159	142
Depreciation and amortization	49	129	175	250
Total costs and expenses	7,992	5,821	16,009	11,897
OPERATING INCOME	88	257	469	848
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	96	68	171	121
Interest expense (net of capitalized interest of $7, $9, $13 and $15, respectively)	(111)	(127)	(217)	(256)
Other income/(expense), net	11	1	10	(4)
INCOME BEFORE TAX	84	199	433	709
Current income tax expense	(7)	(1)	(20)	(11)
Deferred income tax benefit/(expense)	23	(9)	(25)	(65)
NET INCOME	100	189	388	633
Net income attributable to noncontrolling interests		(1)		(1)
NET INCOME ATTRIBUTABLE TO PAA	100	188	388	632
NET INCOME PER COMMON UNIT (NOTE 4):
Net income allocated to common unitholders — Basic	50	148	286	555
Net income allocated to common unitholders — Diluted	$ 50	$ 148	$ 286	$ 555
Common Units
NET INCOME PER COMMON UNIT (NOTE 4):
Basic weighted average common units outstanding (units)	725	725	725	708
Basic net income per common unit (usd per unit)	$ 0.07	$ 0.21	$ 0.39	$ 0.78
Diluted weighted average common units outstanding (units)	727	727	727	710
Diluted net income per common unit (usd per unit)	$ 0.07	$ 0.21	$ 0.39	$ 0.78
Supply and Logistics
REVENUES
Total revenues	$ 7,781	$ 5,781	$ 15,892	$ 12,176
Transportation
REVENUES
Total revenues	152	161	298	299
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	96	68	171	121
Facilities
REVENUES
Total revenues	$ 147	$ 136	$ 288	$ 270