STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income	$ 5,657	$ 5,615	$ 4,755
Reconciliation of net income to net cash flows provided by operating activities:
Depreciation and accretion	1,871	1,797	1,723
Amortization of intangible assets	201	177	151
Amortization of major maintenance costs for reaction-based plants	64	51	27
Other amortization expense	207	220	239
Impairment of assets other than goodwill	32	53	233
Equity in income of unconsolidated affiliates	(462)	(464)	(583)
Distributions received from unconsolidated affiliates attributable to earnings	446	446	544
Net losses (gains) attributable to asset sales and related matters	(10)	1	5
Deferred income tax expense	12	60	40
Change in fair market value of derivative instruments	33	78	(27)
Non-cash expense related to long-term operating leases	72	59	41
Net effect of changes in operating accounts	(555)	(54)	1,366
Other operating activities	1	0	(1)
Net cash flows provided by operating activities	7,569	8,039	8,513
Investing activities:
Capital expenditures	(3,266)	(1,964)	(2,223)
Cash used for business combinations, net of cash received	0	(3,204)	0
Investments in unconsolidated affiliates	(2)	(1)	(2)
Distributions received from unconsolidated affiliates attributable to the return of capital	42	98	46
Proceeds from asset sales and other matters	42	122	64
Other investing activities	(13)	(5)	(20)
Cash used in investing activities	(3,197)	(4,954)	(2,135)
Financing activities:
Borrowings under debt agreements	89,899	96,140	11,159
Repayments of debt	(89,447)	(97,395)	(11,492)
Debt issuance costs	(17)	(1)	(15)
Monetization of interest rate derivative instruments	21	0	75
Cash distributions paid to common unitholders	(4,301)	(4,095)	(3,930)
Cash payments made in connection with distribution equivalent rights	(38)	(34)	(31)
Cash distributions paid to noncontrolling interests	(160)	(163)	(154)
Cash contributions from noncontrolling interests	44	7	72
Repurchase of common units under 2019 Buyback Program	(188)	(250)	(214)
Other financing activities	(71)	(53)	(41)
Cash used in financing activities	(4,258)	(5,844)	(4,571)
Net change in cash and cash equivalents, including restricted cash	114	(2,759)	1,807
Cash and cash equivalents, including restricted cash, at beginning of period	206	2,965	1,158
Cash and cash equivalents, including restricted cash, at end of period	$ 320	$ 206	$ 2,965