Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Sales and other operating revenue	$ 302.2	$ 404.3	$ 1,022.9	$ 1,203.1
Costs and operating expenses
Cost of products sold and operating expenses	238.3	319.4	805.2	953.8
Selling, general and administrative expenses	18.4	14.3	51.1	52.9
Depreciation and amortization expense	33.5	35.6	101.7	109.8
Long-lived asset and goodwill impairment	0.0	247.4	0.0	247.4
Total costs and operating expenses	290.2	616.7	958.0	1,363.9
Operating income (loss)	12.0	(212.4)	64.9	(160.8)
Interest expense, net	13.7	15.7	43.2	45.6
Gain on extinguishment of debt	(0.5)	(1.5)	(3.4)	(1.5)
(Loss) income before income tax expense (benefit)	(1.2)	(226.6)	25.1	(204.9)
Income tax expense (benefit)	0.2	(63.5)	12.8	(57.3)
Net (loss) income	(1.4)	(163.1)	12.3	(147.6)
Less: Net income (loss) attributable to noncontrolling interests	1.3	(0.1)	3.6	3.3
Net (loss) income attributable to SunCoke Energy, Inc.	$ (2.7)	$ (163.0)	$ 8.7	$ (150.9)
(Loss) earnings attributable to SunCoke Energy, Inc. per common share:
Basic (USD per share)	$ (0.03)	$ (1.81)	$ 0.10	$ (2.05)
Diluted (USD per share)	$ (0.03)	$ (1.81)	$ 0.10	$ (2.05)
Weighted average number of common shares outstanding:
Basic (in shares)	82.8	89.9	83.1	73.7
Diluted (in shares)	82.8	89.9	83.2	73.7