UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income	$ 1,331	$ 1,363
Reconciliation of net income to net cash flows provided by operating activities:
Depreciation and accretion	440	426
Amortization of intangible assets	41	36
Amortization of major maintenance costs for reaction-based plants	12	3
Other amortization expense	58	60
Impairment of assets other than goodwill	14	66
Equity in income of unconsolidated affiliates	(117)	(149)
Distributions received from unconsolidated affiliates attributable to earnings	109	112
Net losses attributable to asset sales and related matters	2	11
Deferred income tax expense	9	5
Change in fair market value of derivative instruments	42	(16)
Non-cash expense related to long-term operating leases	13	9
Net effect of changes in operating accounts	191	99
Other operating activities	0	(2)
Net cash flows provided by operating activities	2,145	2,023
Investing activities:
Capital expenditures	(349)	(679)
Cash used for business combinations, net of cash received	(3,204)	0
Investments in unconsolidated affiliates	0	(1)
Distributions received from unconsolidated affiliates attributable to the return of capital	11	19
Proceeds from asset sales	11	6
Other investing activities	(1)	(2)
Cash used in investing activities	(3,532)	(657)
Financing activities:
Borrowings under debt agreements	13,444	7,532
Repayments of debt	(13,464)	(8,742)
Monetization of interest rate derivative instruments	0	75
Cash distributions paid to common unitholders	(1,012)	(982)
Cash payments made in connection with distribution equivalent rights	(8)	(7)
Cash distributions paid to noncontrolling interests	(42)	(30)
Cash contributions from noncontrolling interests	2	13
Repurchase of common units under 2019 Buyback Program	0	(14)
Other financing activities	(45)	(35)
Cash used in financing activities	(1,125)	(2,190)
Net change in cash and cash equivalents, including restricted cash	(2,512)	(824)
Cash and cash equivalents, including restricted cash, at beginning of period	2,965	1,158
Cash and cash equivalents, including restricted cash, at end of period	$ 453	$ 334