CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income/(loss)	$ (2,580)	$ 2,180	$ 2,216
Reconciliation of net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	653	601	520
(Gains)/losses on asset sales and asset impairments, net (Note 6, Note 7)	719	28	(114)
Goodwill impairment losses (Note 8)	2,515	0	0
Equity-indexed compensation expense	15	34	79
Inventory valuation adjustments (Note 5)	233	11	8
Deferred income tax expense/(benefit)	(70)	(46)	132
Settlement of terminated interest rate hedging instruments	(100)	(55)	14
Equity earnings in unconsolidated entities	(355)	(388)	(375)
Distributions on earnings from unconsolidated entities	472	401	422
(Gain on)/impairment of investments in unconsolidated entities, net (Note 9)	182	(271)	(200)
Other	(12)	21	39
Changes in assets and liabilities, net of acquisitions:
Trade accounts receivable and other	1,432	(1,158)	309
Inventory	(304)	(5)	(75)
Trade accounts payable and other	(1,286)	1,151	(367)
Net cash provided by operating activities	1,514	2,504	2,608
CASH FLOWS FROM INVESTING ACTIVITIES
Cash paid in connection with acquisitions, net of cash acquired (Note 7)	(310)	(50)	0
Investments in unconsolidated entities (Note 9)	(461)	(524)	(468)
Additions to property, equipment and other	(738)	(1,181)	(1,634)
Proceeds from sales of assets (Note 7)	429	77	1,334
Cash paid for purchases of linefill and base gas	(14)	(74)	(45)
Other investing activities	1	(13)	0
Net cash used in investing activities	(1,093)	(1,765)	(813)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings/(repayments) under commercial paper program (Note 11)	456	93	(123)
Net borrowings/(repayments) under senior secured hedged inventory facility (Note 11)	(160)	325	(778)
Proceeds from GO Zone term loans (Note 11)	0	0	200
Proceeds from the issuance of senior notes (Note 11)	748	998	0
Repayments of senior notes (Note 11)	(617)	(1,000)	0
Repurchase of common units (Note 12)	(50)	0	0
Sale of noncontrolling interest in a subsidiary (Note 12)	0	128	0
Other financing activities	41	(62)	(24)
Net cash used in financing activities	(435)	(720)	(1,757)
Effect of translation adjustment	(8)	(3)	(9)
Net increase/(decrease) in cash and cash equivalents and restricted cash	(22)	16	29
Cash and cash equivalents and restricted cash, beginning of period	82	66	37
Cash and cash equivalents and restricted cash, end of period	60	82	66
Cash paid for:
Interest, net of amounts capitalized	428	397	400
Income taxes, net of amounts refunded	111	136	21
Series B Preferred Units
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions paid to unitholders (Note 12)	(49)	(49)	(49)
Common Units
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions paid to unitholders (Note 12)	(655)	(1,004)	(871)
Series A Preferred Units
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions paid to unitholders (Note 12)	$ (149)	$ (149)	$ (112)