CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
REVENUES
Total revenues	$ 8,269	$ 8,375
COSTS AND EXPENSES
Purchases and related costs	7,367	7,119
Field operating costs	304	326
General and administrative expenses	69	76
Depreciation and amortization	168	136
(Gains)/losses on asset sales and asset impairments, net (Note 14)	619	4
Goodwill impairment losses (Note 6)	2,515
Total costs and expenses	11,042	7,661
OPERATING INCOME/(LOSS)	(2,773)	714
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	110	89
Gain on/(impairment of) investments in unconsolidated entities, net (Note 7)	(22)	267
Interest expense (net of capitalized interest of $6 and $11, respectively)	(108)	(101)
Other income/(expense), net	(31)	25
INCOME/(LOSS) BEFORE TAX	(2,824)	994
Current income tax expense	(6)	(30)
Deferred income tax (expense)/benefit	(15)	6
NET INCOME/(LOSS)	(2,845)	970
Net income attributable to noncontrolling interests	(2)
NET INCOME/(LOSS) ATTRIBUTABLE TO PAA	(2,847)	970
NET INCOME/(LOSS) PER COMMON UNIT (NOTE 4):
Net income/(loss) allocated to common unitholders — Basic	(2,897)	917
Net income/(loss) allocated to common unitholders — Diluted	$ (2,897)	$ 957
Common Units
NET INCOME/(LOSS) PER COMMON UNIT (NOTE 4):
Basic weighted average common units outstanding (units)	728	727
Basic net income/(loss) per common unit (usd per unit)	$ (3.98)	$ 1.26
Diluted weighted average common units outstanding (units)	728	800
Diluted net income/(loss) per common unit (usd per unit)	$ (3.98)	$ 1.20
Supply and Logistics
REVENUES
Total revenues	$ 7,907	$ 8,022
Transportation
REVENUES
Total revenues	187	197
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	108	89
Facilities
REVENUES
Total revenues	175	$ 156
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	$ 2