Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net (loss) income	$ (307.0)	$ 154.4
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	52.6	46.8
Amortization And Accretion, Other	2.2	2.6
Non-Cash Lease Expense (Income)	13.3	9.3
Deferred income taxes	(24.5)	10.9
Income from equity method investments	(5.1)	(2.6)
Dividends from equity method investments	4.9	1.9
Loss on disposal of assets	0.5	5.6
Equity-based compensation expense	6.3	5.0
Excess tax deficiency (benefit) of equity-based compensation	0.6	(1.4)
Changes in assets and liabilities:
Accounts receivable	351.6	(265.8)
Inventories and other current assets	531.7	(192.5)
Fair value of derivatives	(36.1)	43.5
Accounts payable and other current liabilities	(546.3)	292.4
Obligation under Supply and Offtake Agreement	(199.9)	22.6
Non-current assets and liabilities, net	1.1	0.7
Net cash (used in) provided by operating activities	(154.1)	133.4
Cash flows from investing activities:
Equity method investment contributions	(27.1)	(4.8)
Distribution from equity method investments	69.4	0.8
Purchases of property, plant and equipment	(189.2)	(124.0)
Proceeds from sale of property, plant and equipment	0.3	1.0
Net cash used in investing activities	(146.6)	(127.0)
Cash flows from financing activities:
Proceeds from long-term revolvers	1,230.2	437.8
Payments on long-term revolvers	(1,053.5)	(433.3)
Payments on term debt	(27.9)	(26.8)
Proceeds from inventory financing agreements	42.0	15.6
Repayments of inventory financing agreements	(21.0)	(9.0)
Taxes paid due to the net settlement of equity-based compensation	(0.7)	(4.5)
Repurchase of common stock	(1.9)	(46.2)
Repurchase of non-controlling interest	(5.0)	0.0
Distribution to non-controlling interest	(8.6)	(7.7)
Dividends paid	(23.1)	(21.0)
Deferred financing costs paid	(0.2)	(0.9)
Net cash provided by (used in) financing activities	130.3	(96.0)
Net decrease in cash and cash equivalents	(170.4)	(89.6)
Cash and cash equivalents at the beginning of the period	955.3	1,079.3
Cash and cash equivalents of continuing operations at the end of the period	784.9	989.7
Cash paid during the period for:
Interest, net of capitalized interest	32.2	25.1
Income taxes	0.2	0.1
Non-cash investing activities:
Increase in accrued capital expenditures	1.1	4.4
Non-cash financing activities:
Non-cash lease liability arising from recognition of right of use assets upon adoption of Accounting Standards Update (ASU) 2016-02	0.0	211.0
Non-cash lease liability arising from obtaining right of use assets during the period	$ 6.8	$ 0.0