CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income/(loss)	$ 181	$ (2,556)
Reconciliation of net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	375	335
(Gains)/losses on asset sales and asset impairments, net	370	618
Goodwill impairment losses		2,515
Inventory valuation adjustments		232
Deferred income tax expense/(benefit)	33	(162)
(Gain)/loss on foreign currency revaluation	(15)	23
Settlement of terminated interest rate hedging instruments		(100)
Change in fair value of Preferred Distribution Rate Reset Option (Note 8)	(9)	(17)
Equity earnings in unconsolidated entities	(121)	(191)
Distributions on earnings from unconsolidated entities	211	236
(Gain on)/impairment of investments in unconsolidated entities, net		91
Other	27	15
Changes in assets and liabilities, net of acquisitions	(29)	(67)
Net cash provided by operating activities	1,023	972
CASH FLOWS FROM INVESTING ACTIVITIES
Cash paid in connection with acquisitions, net of cash acquired	(32)	(308)
Investments in unconsolidated entities	(71)	(314)
Additions to property, equipment and other	(182)	(472)
Proceeds from sales of assets	22	245
Other investing activities	(20)	(9)
Net cash used in investing activities	(283)	(858)
CASH FLOWS FROM FINANCING ACTIVITIES
Net repayments under PAA commercial paper program (Note 6)	(159)	(93)
Net repayments under PAA senior secured hedged inventory facility (Note 6)	(167)	(325)
Proceeds from the issuance of PAA senior notes		748
Repayments of PAA senior notes		(17)
Repurchase of common units by a subsidiary (Note 7)	(53)
Distributions paid to Class A shareholders (Note 7)	(70)	(99)
Distributions paid to noncontrolling interests (Note 7)	(295)	(397)
Other financing activities	(28)	100
Net cash used in financing activities	(772)	(83)
Effect of translation adjustment	2	(9)
Net increase/(decrease) in cash and cash equivalents and restricted cash	(30)	22
Cash and cash equivalents and restricted cash, beginning of period	63	84
Cash and cash equivalents and restricted cash, end of period	33	106
Cash paid for:
Interest, net of amounts capitalized	202	213
Income taxes, net of amounts refunded	$ 27	$ 51