UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Operating activities:
Net income	$ 3,352	$ 2,860
Reconciliation of net income to net cash flow provided by operating activities:
Depreciation and accretion	1,123	1,030
Amortization of intangible assets	117	104
Amortization of major maintenance costs for reaction-based plants	57	31
Amortization of finance lease right-of-use assets	3	1
Other amortization expense	126	114
Impairment of assets other than goodwill	17	21
Equity in income of unconsolidated affiliates	(185)	(186)
Distributions received from unconsolidated affiliates attributable to earnings	183	189
Net gains attributable to asset sales and related matters	(1)	(9)
Deferred income tax expense	19	16
Change in fair market value of derivative instruments	(31)	(10)
Non-cash expense related to long-term operating leases (see Note 16)	52	55
Net effect of changes in operating accounts (see Note 17)	(195)	153
Other operating activities	13	6
Net cash flow provided by operating activities	4,650	4,375
Investing activities:
Capital expenditures	(2,141)	(2,361)
Investments in unconsolidated affiliates	0	(1)
Distributions received from unconsolidated affiliates attributable to the return of capital	23	35
Proceeds from asset sales and other matters	599	15
Other investing activities	(16)	(9)
Net cash flow used in investing activities	(1,535)	(2,321)
Financing activities:
Borrowings under debt agreements	54,221	49,565
Repayments of debt	(55,396)	(48,720)
Debt issuance costs	(4)	(25)
Monetization of interest rate derivative instruments	0	14
Cash distributions paid to common unitholders (see Note 8)	(2,379)	(2,319)
Cash payments made in connection with distribution equivalent rights	(23)	(22)
Cash distributions paid to noncontrolling interests	(44)	(39)
Cash contributions from noncontrolling interests	1	5
Repurchase of common units under 2019 Buyback Program	(275)	(170)
Other financing activities	(116)	(85)
Net cash flow used in financing activities	(4,015)	(1,796)
Net change in cash and cash equivalents, including restricted cash	(900)	258
Cash and cash equivalents, including restricted cash, at beginning of period	1,245	838
Cash and cash equivalents, including restricted cash, at end of period	$ 345	$ 1,096