CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUES
Total revenues	$ 7,886	$ 8,792	$ 24,515	$ 25,269
COSTS AND EXPENSES
Purchases and related costs	6,855	7,768	21,218	22,838
Field operating costs	316	326	983	931
General and administrative expenses	74	74	225	232
Depreciation and amortization	156	129	439	385
(Gains)/losses on asset sales and asset impairments, net	(7)	2	(7)	(79)
Total costs and expenses	7,394	8,299	22,858	24,307
OPERATING INCOME	492	493	1,657	962
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	102	110	274	281
Gain on investment in unconsolidated entities	4	210	271	210
Interest expense (net of capitalized interest of $7, $8, $29 and $21, respectively)	(108)	(110)	(311)	(327)
Other income/(expense), net	5	(3)	23	8
INCOME BEFORE TAX	495	700	1,914	1,134
Current income tax expense	(19)	(14)	(72)	(34)
Deferred income tax (expense)/benefit	(22)	24	30	(1)
NET INCOME	454	710	1,872	1,099
Net income attributable to noncontrolling interests	(5)		(7)
NET INCOME ATTRIBUTABLE TO PAA	449	710	1,865	1,099
NET INCOME PER COMMON UNIT (NOTE 4):
Net income allocated to common unitholders — Basic	399	658	1,710	946
Net income allocated to common unitholders — Diluted	$ 436	$ 697	$ 1,826	$ 947
Common Units
NET INCOME PER COMMON UNIT (NOTE 4):
Basic weighted average common units outstanding (units)	728	726	727	726
Basic net income per common unit (usd per unit)	$ 0.55	$ 0.91	$ 2.35	$ 1.30
Diluted weighted average common units outstanding (units)	800	799	800	728
Diluted net income per common unit (usd per unit)	$ 0.55	$ 0.87	$ 2.28	$ 1.30
Supply and Logistics
REVENUES
Total revenues	$ 7,541	$ 8,482	$ 23,477	$ 24,374
Transportation
REVENUES
Total revenues	196	161	581	458
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	102	110	274	281
Facilities
REVENUES
Total revenues	$ 149	$ 149	$ 457	$ 437