Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (260.4)	$ (134.8)
Adjustments to reconcile net loss to net cash provided by operating activities:
Impairments	353.0	186.5
Depreciation and amortization	162.8	152.1
Deferred income tax (benefit) expense	(34.0)	0.8
Non-cash unit-based compensation	8.8	11.1
Gain on derivatives recognized in net loss	(19.2)	(1.8)
Cash settlements on derivatives	1.2	4.6
Gain on extinguishment of debt	(5.3)	0.0
Amortization of debt issue costs, net discount (premium) of notes	1.0	1.8
Distribution of earnings from unconsolidated affiliates	1.6	2.2
Income from unconsolidated affiliates	(1.7)	(5.3)
Other operating activities	(1.2)	(0.4)
Changes in assets and liabilities:
Accounts receivable, accrued revenue, and other	124.8	93.8
Natural gas and NGLs inventory, prepaid expenses, and other	44.5	3.6
Accounts payable, accrued product purchases, and other accrued liabilities	(193.9)	(50.2)
Net cash provided by operating activities	182.0	264.0
Cash flows from investing activities:
Additions to property and equipment	(112.0)	(241.5)
Other investing activities	(3.5)	0.5
Net cash used in investing activities	(115.5)	(241.0)
Cash flows from financing activities:
Proceeds from borrowings	440.0	630.0
Payments on borrowings	(241.0)	(581.4)
Debt financing costs	0.0	(5.6)
Conversion of restricted units, net of units withheld for taxes	(4.0)	(8.4)
Distribution to members	(93.3)	(51.0)
Distributions to non-controlling interests	(24.7)	(127.6)
Contributions by non-controlling interests	37.1	15.7
Other financing activities	0.1	5.6
Net cash provided by (used in) financing activities	114.2	(122.7)
Net increase (decrease) in cash and cash equivalents	180.7	(99.7)
Cash and cash equivalents, beginning of period	77.4	100.4
Cash and cash equivalents, end of period	258.1	0.7
Supplemental disclosures of cash flow information:
Cash paid for interest	22.3	23.8
Non-cash investing activities:
Non-cash accrual of property and equipment	2.8	9.5
Redemption of non-controlling interest	$ (4.0)	$ 0.0