UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities:
Net income	$ 2,705	$ 2,771
Reconciliation of net income to net cash flows provided by operating activities:
Depreciation and accretion	910	891
Amortization of intangible assets	96	86
Amortization of major maintenance costs for reaction-based plants	31	25
Other amortization expense	106	115
Impairment of assets other than goodwill	16	19
Equity in income of unconsolidated affiliates	(225)	(224)
Distributions received from unconsolidated affiliates attributable to earnings	217	224
Net losses (gains) attributable to asset sales and related matters	(4)	2
Deferred income tax expense (benefit)	(8)	16
Change in fair market value of derivative instruments	10	94
Non-cash expense related to long-term operating leases	33	27
Net effect of changes in operating accounts	(403)	218
Other operating activities	1	0
Net cash flows provided by operating activities	3,485	4,264
Investing activities:
Capital expenditures	(1,433)	(731)
Cash used for business combinations, net of cash received	0	(3,204)
Distributions received from unconsolidated affiliates attributable to the return of capital	30	55
Proceeds from asset sales and other matters	6	14
Other investing activities	(5)	(2)
Cash used in investing activities	(1,402)	(3,868)
Financing activities:
Borrowings under debt agreements	28,595	42,112
Repayments of debt	(28,238)	(42,872)
Debt issuance costs	(17)	0
Monetization of interest rate derivative instruments	21	0
Cash distributions paid to common unitholders	(2,129)	(2,026)
Cash payments made in connection with distribution equivalent rights	(19)	(17)
Cash distributions paid to noncontrolling interests	(81)	(82)
Cash contributions from noncontrolling interests	15	4
Repurchase of common units under 2019 Buyback Program	(92)	(35)
Other financing activities	(67)	(48)
Cash used in financing activities	(2,012)	(2,964)
Net change in cash and cash equivalents, including restricted cash	71	(2,568)
Cash and cash equivalents, including restricted cash, at beginning of period	206	2,965
Cash and cash equivalents, including restricted cash, at end of period	$ 277	$ 397