UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Operating activities:
Net income	$ 1,280.4	$ 911.5
Reconciliation of net income to net cash flows provided by operating activities:
Depreciation, amortization and accretion	474.5	425.9
Asset impairment and related charges	4.8	0.9
Equity in income of unconsolidated affiliates	(154.6)	(115.7)
Distributions received on earnings from unconsolidated affiliates	139.0	107.5
Net gains attributable to asset sales	(0.4)	(0.5)
Deferred income tax expense	1.8	(1.1)
Change in fair market value of derivative instruments	(96.3)	136.9
Change in fair market value of Liquidity Option Agreement	57.8	7.5
Gain on step acquisition of unconsolidated affiliate	0.0	(37.0)
Net effect of changes in operating accounts	(559.8)	(203.1)
Other operating activities	13.2	0.8
Net cash flows provided by operating activities	1,160.4	1,233.6
Investing activities:
Capital expenditures	(1,148.9)	(946.5)
Cash used for business combination	0.0	(149.8)
Investments in unconsolidated affiliates	(29.1)	(37.9)
Distributions received for return of capital from unconsolidated affiliates	4.5	14.9
Proceeds from asset sales	1.7	1.1
Other investing activities	(2.7)	(0.9)
Cash used in investing activities	(1,174.5)	(1,119.1)
Financing activities:
Borrowings under debt agreements	15,692.4	16,283.8
Repayments of debt	(14,999.2)	(15,444.7)
Debt issuance costs	0.0	(24.2)
Cash distributions paid to limited partners	(950.4)	(918.5)
Cash payments made in connection with distribution equivalent rights	(4.5)	(3.9)
Cash distributions paid to noncontrolling interests	(18.0)	(15.4)
Cash contributions from noncontrolling interests	34.8	0.1
Net cash proceeds from the issuance of common units	42.7	177.0
Repurchase of common units under 2019 Buyback Program	(51.6)	0.0
Other financing activities	(34.7)	(23.4)
Cash provided by (used in) financing activities	(288.5)	30.8
Net change in cash and cash equivalents, including restricted cash	(302.6)	145.3
Cash and cash equivalents, including restricted cash, at beginning of period	410.1	70.3
Cash and cash equivalents, including restricted cash, at end of period	$ 107.5	$ 215.6

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