Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ 9.3	$ (871.3)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Impairments	7.0	873.3
Depreciation and amortization	128.3	121.9
(Gain) loss on disposition of assets	5.1	(0.2)
Non-cash unit-based compensation	19.4	8.0
(Gain) loss on derivatives recognized in net income (loss)	(2.8)	0.4
Cash settlements on derivatives	(2.9)	5.6
Amortization of debt issue costs	1.0	0.9
Amortization of net discount on notes	6.3	11.7
Redeemable non-controlling interest expense	0.0	0.2
(Income) loss from unconsolidated affiliates	(0.7)	2.4
Other	2.5	(0.7)
Changes in assets and liabilities, net of assets acquired and liabilities assumed:
Accounts receivable, accrued revenue and other	21.5	32.0
Natural gas and NGLs inventory, prepaid expenses and other	2.4	22.4
Accounts payable, accrued gas and crude oil purchases and other accrued liabilities	(18.8)	(12.2)
Net cash provided by operating activities	177.6	194.4
Cash flows from investing activities, net of assets acquired and liabilities assumed:
Additions to property and equipment	(256.3)	(135.4)
Acquisition of business, net of cash acquired	0.0	(796.8)
Proceeds from sale of unconsolidated affiliate investment	189.7	0.2
Proceeds from sale of property	0.5	0.0
Investment in unconsolidated affiliates	(6.0)	(7.1)
Distribution from unconsolidated affiliates in excess of earnings	2.8	6.2
Net cash used in investing activities	(69.3)	(932.9)
Cash flows from financing activities:
Proceeds from borrowings	813.0	397.3
Payments on borrowings	(587.3)	(259.0)
Payment of installment payable for EnLink Oklahoma T.O. acquisition	(250.0)	0.0
Payments on capital lease obligations	(1.0)	(1.1)
Debt financing costs	(0.2)	(0.3)
Conversion of restricted units, net of units withheld for taxes	(4.3)	(1.1)
Conversion of ENLK restricted units, net of units withheld for taxes	(5.0)	(1.1)
Proceeds from issuance of ENLK common units	55.2	2.1
Distributions to non-controlling partners	(101.1)	(93.1)
Distribution to members	(46.4)	(46.3)
Contribution from Devon	1.3	1.4
Proceeds from issuance of ENLK Preferred Units	0.0	724.5
Contributions by non-controlling partners	20.8	3.0
Net cash provided by (used in) financing activities	(105.0)	726.3
Net increase (decrease) in cash and cash equivalents	3.3	(12.2)
Cash and cash equivalents, beginning of period	11.7	18.0
Cash and cash equivalents, end of period	15.0	5.8
Cash paid for interest	15.9	3.5
Cash paid (refund) for income taxes	$ 2.2	$ (6.6)