Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Sales and other operating revenue	$ 323.2	$ 292.7	$ 632.9	$ 603.8
Costs and operating expenses
Cost of products sold and operating expenses	257.2	224.4	491.6	464.9
Selling, general and administrative expenses	24.1	23.7	43.8	47.0
Depreciation and amortization expense	33.3	28.6	66.6	56.8
Loss on divestiture of business	0.0	5.1	0.0	14.7
Total costs and operating expenses	314.6	281.8	602.0	583.4
Operating (loss) income	8.6	10.9	30.9	20.4
Interest expense, net	15.2	13.4	28.9	27.4
Loss (gain) on extinguishment of debt	20.2	(3.5)	20.3	(23.9)
(Loss) income before income tax expense (benefit)	(26.8)	1.0	(18.3)	16.9
Income tax expense	4.7	0.0	70.9	3.3
Net (loss) income	(31.5)	1.0	(89.2)	13.6
Less: Net (loss) income attributable to noncontrolling interests	(7.3)	5.6	(66.0)	22.3
Net loss attributable to SunCoke Energy, Inc.	$ (24.2)	$ (4.6)	$ (23.2)	$ (8.7)
Loss attributable to SunCoke Energy, Inc. per common share:
Basic (in dollars per share)	$ (0.38)	$ (0.07)	$ (0.36)	$ (0.14)
Diluted (in dollars per share)	$ (0.38)	$ (0.07)	$ (0.36)	$ (0.14)
Weighted average number of common shares outstanding:
Basic (in shares)	64.3	64.2	64.3	64.1
Diluted (in shares)	64.3	64.2	64.3	64.1