Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ 15.3	$ (23.9)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	29.0	28.3
Amortization of deferred financing costs and debt discount	0.9	1.1
Accretion of asset retirement obligations	0.1	0.0
Amortization of unfavorable contract liability	(1.5)	0.0
Deferred income taxes	(1.4)	(11.6)
(Income) loss from equity method investments	(3.1)	18.0
Dividends from equity method investments	5.1	5.0
Equity-based compensation expense	3.8	4.1
Income tax benefit of equity-based compensation	0.0	0.1
Loss from discontinued operations	0.0	2.4
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	(61.3)	19.1
Inventories and other current assets	(10.4)	3.0
Fair value of derivatives	2.0	(1.3)
Accounts payable and other current liabilities	(3.1)	33.5
Obligation under Supply and Offtake Agreement	5.6	(7.6)
Non-current assets and liabilities, net	(23.1)	(0.8)
Cash (used in) provided by operating activities - continuing operations	(42.1)	69.4
Cash provided by operating activities - discontinued operations	0.0	2.5
Net cash (used in) provided by operating activities	(42.1)	71.9
Cash flows from investing activities:
Equity method investment contributions	(1.7)	(14.8)
Purchases of property, plant and equipment	(19.0)	(12.6)
Proceeds from sales of assets	0.0	0.2
Cash used in investing activities - continuing operations	(20.7)	(27.2)
Cash used in investing activities - discontinued operations	0.0	(7.0)
Net cash used in investing activities	(20.7)	(34.2)
Cash flows from financing activities:
Proceeds from long-term revolvers	208.6	86.0
Payments on long-term revolvers	(179.2)	(79.7)
Payments on term debt	(37.7)	(12.7)
Proceeds from product financing agreements	0.0	42.5
Repayments of product financing agreements	(6.0)	0.0
Taxes paid due to the net settlement of equity-based compensation	(0.7)	(0.2)
Income tax benefit of equity-based compensation	0.0	(0.1)
Repurchase of common stock	0.0	(2.8)
Repurchase of non-controlling interest	(4.0)	0.0
Distribution to non-controlling interest	(6.4)	(5.7)
Dividends paid	(9.6)	(9.4)
Deferred financing costs paid	0.0	(0.2)
Cash (used in) provided by financing activities - continuing operations	(35.0)	17.7
Cash used in financing activities - discontinued operations	0.0	(7.7)
Net cash (used in) provided by financing activities	(35.0)	10.0
Net (decrease) increase in cash and cash equivalents	(97.8)	47.7
Cash and cash equivalents at the beginning of the period	689.2	302.2
Cash and cash equivalents at the end of the period	591.4	349.9
Less cash and cash equivalents of discontinued operations at the end of the period	0.0	7.1
Cash and cash equivalents of continuing operations at the end of the period	591.4	342.8
Cash paid during the period for:
Interest, net of capitalized interest of a nominal amount and $0.1 million in the 2017 and 2016 periods, respectively	17.9	16.5
Income taxes	12.9	0.1
Non-cash investing activities:
Decrease in accrued capital expenditures	$ (3.8)	$ (10.0)