UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net income	$ 2,508.6	$ 2,435.8
Reconciliation of net income to net cash flows provided by operating activities:
Depreciation and accretion	851.5	841.1
Amortization of intangible assets	73.6	76.2
Amortization of major maintenance costs for reaction-based plants	10.4	0.0
Other amortization expense	123.3	114.4
Impairment of assets other than goodwill	83.5	13.4
Equity in income of unconsolidated affiliates	(309.6)	(254.1)
Distributions received from unconsolidated affiliates attributable to earnings	262.4	257.6
Net losses (gains) attributable to asset sales and related matters	11.2	(1.5)
Deferred income tax expense (benefit)	24.1	(130.7)
Change in fair market value of derivative instruments	(38.8)	(91.4)
Change in fair market value of Liquidity Option	0.0	2.3
Non-cash expense related to long-term operating leases	18.6	19.8
Net effect of changes in operating accounts	399.2	(89.0)
Other operating activities	(1.0)	(0.1)
Net cash flows provided by operating activities	4,017.0	3,193.8
Investing activities:
Capital expenditures	(1,301.2)	(1,975.9)
Investments in unconsolidated affiliates	(1.3)	(7.3)
Distributions received from unconsolidated affiliates attributable to the return of capital	36.9	58.0
Proceeds from asset sales	50.3	4.1
Other investing activities	(13.4)	(9.4)
Cash used in investing activities	(1,228.7)	(1,930.5)
Financing activities:
Borrowings under debt agreements	9,796.8	5,411.8
Repayments of debt	(11,121.8)	(3,406.6)
Debt issuance costs	0.0	(32.2)
Monetization of interest rate derivative instruments	75.2	(33.3)
Cash distributions paid to common unitholders	(1,965.0)	(1,946.9)
Cash payments made in connection with distribution equivalent rights	(15.2)	(12.9)
Cash distributions paid to noncontrolling interests	(71.4)	(61.8)
Cash contributions from noncontrolling interests	18.1	19.7
Repurchase of common units under 2019 Buyback Program	(13.9)	(140.1)
Other financing activities	(38.2)	(34.4)
Cash used in financing activities	(3,335.4)	(236.7)
Net change in cash and cash equivalents, including restricted cash	(547.1)	1,026.6
Cash and cash equivalents, including restricted cash, at beginning of period	1,158.1	410.0
Cash and cash equivalents, including restricted cash, at end of period	$ 611.0	$ 1,436.6