SunCoke Energy (SXC) 10-Q 3 Aug 20 2020 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 31, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-35243
Entity Registrant Name	SUNCOKE ENERGY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-0640593
Entity Address, Address Line One	1011 Warrenville Road
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Lisle
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60532
City Area Code	630
Local Phone Number	824-1000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SXC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		82,768,075
Entity Central Index Key	0001514705
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Sales and other operating revenue	$ 338	$ 407.5	$ 720.7	$ 798.8
Costs and operating expenses
Cost of products sold and operating expenses	262.5	327	566.9	634.4
Selling, general and administrative expenses	16.5	21.9	32.7	38.6
Depreciation and amortization expense	34.1	37	68.2	74.2
Total costs and operating expenses	313.1	385.9	667.8	747.2
Operating income	24.9	21.6	52.9	51.6
Interest expense, net	14.9	15.1	29.5	29.9
Gain on extinguishment of debt	0	0	(2.9)	0
Income before income tax expense	10	6.5	26.3	21.7
Income tax expense	2.2	3.2	12.6	6.2
Net income	7.8	3.3	13.7	15.5
Less: Net income attributable to noncontrolling interests	1.3	1	2.3	3.4
Net income attributable to SunCoke Energy, Inc.	$ 6.5	$ 2.3	$ 11.4	$ 12.1
Earnings attributable to SunCoke Energy, Inc. per common share:
Basic (USD per share)	$ 0.08	$ 0.03	$ 0.14	$ 0.19
Diluted (USD per share)	$ 0.08	$ 0.03	$ 0.14	$ 0.18
Weighted average number of common shares outstanding:
Basic (in shares)	82.8	65.9	83.2	65.4
Diluted (in shares)	82.9	66.1	83.4	65.7

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 7.8	$ 3.3	$ 13.7	$ 15.5
Other comprehensive (loss) income:
Currency translation adjustment	(0.4)	0.1	(1.5)	0.1
Comprehensive income	7.4	3.4	12.2	15.6
Less: Comprehensive income attributable to noncontrolling interests	1.3	1	2.3	3.4
Comprehensive income attributable to SunCoke Energy, Inc.	$ 6.1	$ 2.4	$ 9.9	$ 12.2

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 81.1	$ 97.1
Receivables, net	49.5	59.5
Inventories	135.2	147
Income tax receivable	6.1	2.2
Other current assets	5.2	2.5
Total current assets	277.1	308.3
Properties, plants and equipment (net of accumulated depreciation of $969.5 million and $903.7 million at June 30, 2020 and December 31, 2019, respectively)	1,347.6	1,390.2
Goodwill and other intangible assets, net	36.8	38.1
Deferred charges and other assets	16.9	17.2
Total assets	1,678.4	1,753.8
Liabilities and Equity
Accounts payable	72.9	142.4
Accrued liabilities	41.7	47.3
Current portion of financing obligation	3	2.9
Interest payable	2.1	2.2
Total current liabilities	119.7	194.8
Long-term debt and financing obligation	768.1	780
Accrual for black lung benefits	51.3	50.5
Retirement benefit liabilities	23.5	24.5
Deferred income taxes	162.6	147.6
Asset retirement obligations	14.9	14.4
Other deferred credits and liabilities	22.8	23.6
Total liabilities	1,162.9	1,235.4
Equity
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at both June 30, 2020 and December 31, 2019	0	0
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 98,172,557 and 98,047,389 shares at June 30, 2020 and December 31, 2019, respectively	1	1
Treasury stock, 15,404,482 and 13,783,182 shares at June 30, 2020 and December 31, 2019, respectively	(184)	(177)
Additional paid-in capital	714.1	712.1
Accumulated other comprehensive loss	(15.9)	(14.4)
Retained deficit	(28.8)	(30.1)
Total SunCoke Energy, Inc. stockholders’ equity	486.4	491.6
Noncontrolling interest	29.1	26.8
Total equity	515.5	518.4
Total liabilities and equity	$ 1,678.4	$ 1,753.8

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 969.5	$ 903.7
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares, issued (in shares)	98,172,557	98,047,389
Treasury stock, shares (in shares)	15,404,482	13,783,182

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities:
Net income	$ 13.7	$ 15.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	68.2	74.2
Deferred income tax expense	15	1.8
Payments in excess of expense for postretirement plan benefits	(1)	(1.1)
Share-based compensation expense	2.3	2.1
Gain on extinguishment of debt	(2.9)	0
Changes in working capital pertaining to operating activities:
Receivables	10	(23.5)
Inventories	11.8	(65.3)
Accounts payable	(56.9)	23
Accrued liabilities	(5.5)	10.7
Interest payable	(0.1)	0.3
Income taxes	(3.9)	(2.5)
Other	(2.1)	0.4
Net cash provided by operating activities	48.6	35.6
Cash Flows from Investing Activities:
Capital expenditures	(36.9)	(53.1)
Other investing activities	0	0.2
Net cash used in investing activities	(36.9)	(52.9)
Cash Flows from Financing Activities:
Repayment of long-term debt	(8.9)	(0.6)
Proceeds from revolving credit facility	247.2	175.6
Repayment of revolving credit facility	(247.2)	(180.6)
Repayment of financing obligation	(1.4)	(1.4)
Shares repurchased	(7)	0
Dividends paid	(10)	0
Cash distribution to noncontrolling interests	0	(14.2)
Other financing activities	(0.4)	(5)
Net cash used in financing activities	(27.7)	(26.2)
Net decrease in cash and cash equivalents	(16)	(43.5)
Cash and cash equivalents at beginning of period	97.1	145.7
Cash and cash equivalents at end of period	81.1	102.2
Supplemental Disclosure of Cash Flow Information
Interest paid, net of capitalized interest of zero and $2.3 million, respectively	27.3	28
Income taxes paid, net of refunds of $0.3 million and zero, respectively	$ 1.4	$ 6.5

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Capitalized interest	$ 0	$ 2.3
Tax refunds	$ 0.3	$ 0

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Deficit)	Total  SunCoke Energy, Inc.  Equity	Non-controlling Interests
Beginning balance, shares at Dec. 31, 2018		72,233,750	7,477,657
Beginning balance at Dec. 31, 2018	$ 682.7	$ 0.7	$ (140.7)	$ 488.8	$ (13.1)	$ 127.4	$ 463.1	$ 219.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12.2					9.8	9.8	2.4
Cash distribution to noncontrolling interests	(7.1)							(7.1)
Share-based compensation expense	0.9			0.9			0.9
Share issuances, net of shares withheld for taxes, shares		345,058
Share issuances, net of shares withheld for taxes	(1.7)			(1.7)			(1.7)
Ending balance, shares at Mar. 31, 2019		72,578,808	7,477,657
Ending balance at Mar. 31, 2019	687	$ 0.7	$ (140.7)	488	(13.1)	137.2	472.1	214.9
Beginning balance, shares at Dec. 31, 2018		72,233,750	7,477,657
Beginning balance at Dec. 31, 2018	682.7	$ 0.7	$ (140.7)	488.8	(13.1)	127.4	463.1	219.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15.5
Currency translation adjustment	0.1
Ending balance, shares at Jun. 30, 2019		98,036,174	7,477,657
Ending balance at Jun. 30, 2019	722.8	$ 1	$ (140.7)	709.7	(13)	139.5	696.5	26.3
Beginning balance, shares at Mar. 31, 2019		72,578,808	7,477,657
Beginning balance at Mar. 31, 2019	687	$ 0.7	$ (140.7)	488	(13.1)	137.2	472.1	214.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3.3					2.3	2.3	1
Currency translation adjustment	0.1				0.1		0.1
Cash distribution to noncontrolling interests	(7.1)							(7.1)
Share-based compensation expense	1.2			1.2			1.2
Share issuances, net of shares withheld for taxes, shares		3,715
Share issuances, net of shares withheld for taxes	0			0			0
Simplification Transaction:
Share issuances, for the acquisition of Partnership public units, shares		24,818,149
Share issuances, for the acquisition of Partnership public units	0	$ 0.3		182.2			182.5	(182.5)
Share issuances, for the final Partnership distribution, shares		635,502
Transaction costs	(5.4)			(5.4)			(5.4)
Deferred tax adjustment	43.7			43.7			43.7
Ending balance, shares at Jun. 30, 2019		98,036,174	7,477,657
Ending balance at Jun. 30, 2019	722.8	$ 1	$ (140.7)	709.7	(13)	139.5	696.5	26.3
Beginning balance, shares at Dec. 31, 2019		98,047,389	13,783,182
Beginning balance at Dec. 31, 2019	518.4	$ 1	$ (177)	712.1	(14.4)	(30.1)	491.6	26.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5.9					4.9	4.9	1
Currency translation adjustment	(1.1)				(1.1)		(1.1)
Share-based compensation expense	1.1			1.1			1.1
Share issuances, net of shares withheld for taxes, shares		118,269
Share issuances, net of shares withheld for taxes	(0.3)			(0.3)			(0.3)
Simplification Transaction:
Share repurchases, shares		0	1,621,300
Share repurchases	(7)		$ (7)				(7)
Dividends	(5)					(5)	(5)
Ending balance, shares at Mar. 31, 2020		98,165,658	15,404,482
Ending balance at Mar. 31, 2020	512	$ 1	$ (184)	712.9	(15.5)	(30.2)	484.2	27.8
Beginning balance, shares at Dec. 31, 2019		98,047,389	13,783,182
Beginning balance at Dec. 31, 2019	518.4	$ 1	$ (177)	712.1	(14.4)	(30.1)	491.6	26.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	13.7
Currency translation adjustment	(1.5)
Ending balance, shares at Jun. 30, 2020		98,172,557	15,404,482
Ending balance at Jun. 30, 2020	515.5	$ 1	$ (184)	714.1	(15.9)	(28.8)	486.4	29.1
Beginning balance, shares at Mar. 31, 2020		98,165,658	15,404,482
Beginning balance at Mar. 31, 2020	512	$ 1	$ (184)	712.9	(15.5)	(30.2)	484.2	27.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7.8					6.5	6.5	1.3
Currency translation adjustment	(0.4)				(0.4)		(0.4)
Share-based compensation expense	1.2			1.2			1.2
Share issuances, net of shares withheld for taxes, shares		6,899
Share issuances, net of shares withheld for taxes	0			0			0
Simplification Transaction:
Dividends	(5.1)					(5.1)	(5.1)
Ending balance, shares at Jun. 30, 2020		98,172,557	15,404,482
Ending balance at Jun. 30, 2020	$ 515.5	$ 1	$ (184)	$ 714.1	$ (15.9)	$ (28.8)	$ 486.4	$ 29.1

General

General	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	1. General Description of Business SunCoke Energy, Inc. (“SunCoke Energy,” “SunCoke,” “Company,” “we,” “our” and “us”) is the largest independent producer of high-quality coke in the Americas, as measured by tons of coke produced each year, and has over 55 years of coke production experience. Coke is a principal raw material in the blast furnace steelmaking process and is produced by heating metallurgical coal in a refractory oven, which releases certain volatile components from the coal, thus transforming the coal into coke. Additionally, we own and operate a logistics business, which primarily provides handling and/or mixing services of coal and other aggregates to third-party customers as well as to our own cokemaking facilities. We have designed, developed, built, own and operate five cokemaking facilities in the United States (“U.S.”), which consist of our Haverhill, Middletown, Granite City, Jewell and Indiana Harbor cokemaking facilities. Our cokemaking facilities have collective nameplate capacity to produce approximately 4.2 million tons of blast furnace coke per year. Additionally, we have designed and operate one cokemaking facility in Brazil under licensing and operating agreements on behalf of ArcelorMittal Brasil S.A. (“ArcelorMittal Brazil”), which has approximately 1.7 million tons of annual cokemaking capacity. To diversify our business and customer base, SunCoke has been exploring the foundry coke market and testing production capacity. We expect we will be in a position to produce and sell foundry coke and by-product industrial coke in 2021. Foundry coke is a high-quality grade of coke that is used at foundries to melt iron and various metals in cupola furnaces. Our cokemaking ovens utilize efficient, modern heat recovery technology designed to combust the coal’s volatile components liberated during the cokemaking process and use the resulting heat to create steam or electricity for sale. This differs from by-product cokemaking, which repurposes the coal’s liberated volatile components for other uses. We have constructed the only greenfield cokemaking facilities in the U.S. in approximately 30 years and are the only North American coke producer that utilizes heat recovery technology in the cokemaking process. We provide steam pursuant to steam supply and purchase agreements with our customers. Electricity is sold into the regional power market or pursuant to energy sales agreements. Our logistics business provides handling and/or mixing services to steel, coke (including some of our domestic cokemaking facilities), electric utility, coal producing and other manufacturing based customers. Our logistics business consists of Convent Marine Terminal (“CMT”), Kanawha River Terminal (“KRT”), SunCoke Lake Terminal (“Lake Terminal”) and Dismal River Terminal (“DRT”) and has collective capacity to mix and/or transload more than 40 million tons of coal and other aggregates annually and has total storage capacity of approximately 3 million tons. Incorporated in Delaware in 2010 and headquartered in Lisle, Illinois, we became a publicly-traded company in 2011 and our stock is listed on the New York Stock Exchange under the symbol “SXC.” Basis of Presentation The accompanying unaudited consolidated financial statements included herein have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim reporting. Certain information and disclosures normally included in financial statements have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In management’s opinion, the financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the results of operations, financial position and cash flows for the periods presented. The results of operations for the period ended June 30, 2020 are not necessarily indicative of the operating results expected for the entire year. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2019.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2020
Noncontrolling Interest [Abstract]
Acquisitions	2. Acquisitions Simplification Transaction Prior to June 28, 2019, SunCoke owned a 60.4 percent limited partner interest in SunCoke Energy Partners, L.P. (the "Partnership") as well as our 2.0 percent general partner interest. The remaining 37.6 percent limited partner interest in the Partnership was held by public unitholders. On June 28, 2019, the Company acquired all of the outstanding common units of the Partnership not already owned by SunCoke (the "Simplification Transaction"). Following the completion of the Simplification Transaction, the Partnership became a wholly-owned subsidiary of SunCoke, the Partnership common units ceased to be publicly traded and the Partnership’s incentive distribution rights were eliminated. As of January 1, 2020, the Partnership merged with and into SunCoke Energy Partners Finance Corp. ("Finance Corp."), which is also a wholly-owned subsidiary of the Company. The following table summarizes the effects of the changes in the Company's ownership interest in the Partnership on SunCoke's equity: Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 (Dollars in millions) Net income attributable to SunCoke Energy, Inc. $ 2.3 $ 12.1 Increase in SunCoke Energy, Inc. equity for the change in ownership interest in the Partnership (1) 182.5 182.5 Change from net income attributable to SunCoke Energy, Inc. and transfers from noncontrolling interest $ 184.8 $ 194.6

Inventories

Inventories	6 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
Inventories	3. Inventories The components of inventories were as follows: June 30, 2020 December 31, 2019 (Dollars in millions) Coal $ 78.3 $ 94.4 Coke 11.1 8.1 Materials, supplies and other 45.8 44.5 Total inventories $ 135.2 $ 147.0

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	4. Goodwill and Other Intangible Assets Goodwill, which represents the excess of the purchase price over the fair value of net assets acquired, is assessed for impairment as of October 1 of each year, or when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit to below its carrying value. Goodwill allocated to our Domestic Coke segment was $3.4 million at both June 30, 2020 and December 31, 2019. The components of other intangible assets, net were as follows: June 30, 2020 December 31, 2019 Weighted - Average Remaining Amortization Years Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net (Dollars in millions) Customer contracts 1 $ 7.7 $ 7.5 $ 0.2 $ 7.7 $ 7.2 $ 0.5 Customer relationships 4 6.7 4.2 2.5 6.7 3.9 2.8 Permits 22 31.7 1.0 30.7 31.7 0.3 31.4 Total $ 46.1 $ 12.7 $ 33.4 $ 46.1 $ 11.4 $ 34.7

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes At the end of each interim period, we make our best estimate of the effective tax rate and the impact of discrete items, if any, and adjust the rate as necessary. The Company recorded income tax expense of $2.2 million and $12.6 million for the three and six months ended June 30, 2020, respectively, resulting in effective tax rates of 22.0 percent and 47.9 percent, respectively, as compared to the 21.0 percent federal statutory rate. Differences between the Company's effective tax rates and the federal statutory rate during the six months ended June 30, 2020 were primarily driven by the revaluation of certain deferred tax assets due to lower apportioned

Accrued Liabilities

Accrued Liabilities	6 Months Ended
	Jun. 30, 2020
Payables and Accruals [Abstract]
Accrued Liabilities	6. Accrued Liabilities Accrued liabilities consisted of the following: June 30, 2020 December 31, 2019 (Dollars in millions) Accrued benefits $ 13.9 $ 21.7 Current portion of postretirement benefit obligation 2.9 2.9 Other taxes payable 12.2 9.9 Current portion of black lung liability 4.6 4.6 Other 8.1 8.2 Total accrued liabilities $ 41.7 $ 47.3

Debt and Financing Obligation

Debt and Financing Obligation	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Debt and Financing Obligation	7. Debt and Financing Obligation Total debt and financing obligation, including the current portion of the financing obligation, consisted of the following: June 30, 2020 December 31, 2019 (Dollars in millions) 7.50 percent senior notes, due 2025 ("2025 Senior Notes") $ 638.0 $ 650.0 $400.0 million revolving credit facility, due 2024 ("Revolving Facility") 143.3 143.3 5.82 percent financing obligation, due 2021 ("Financing Obligation") 5.8 7.2 Total borrowings 787.1 800.5 Original issue discount (3.9) (4.3) Debt issuance costs (12.1) (13.3) Total debt and financing obligation $ 771.1 $ 782.9 Less: current portion of financing obligation 3.0 2.9 Total long-term debt and financing obligation $ 768.1 $ 780.0 2025 Senior Notes During the first quarter of 2020, the Company repurchased $12.0 million face value of outstanding 2025 Senior Notes for $8.9 million of cash payments, resulting in a gain on extinguishment of debt on the Consolidated Statements of Income of $2.9 million, net of the write-off of unamortized debt issuance costs and original issue discount. Revolving Facility As of June 30, 2020, the Revolving Facility had letters of credit outstanding of $11.8 million and a $143.3 million outstanding balance, leaving $244.9 million available. Additionally, the Company has certain letters of credit totaling $11.5 million, which do not reduce the Revolving Facility's available balance. Covenants Under the terms of the Revolving Facility, the Company is subject to a maximum consolidated net leverage ratio of 4.50:1.00 and a minimum consolidated interest coverage ratio of 2.50:1.00. The Company's debt agreements contain other covenants and events of default that are customary for similar agreements and may limit our ability to take various actions including our ability to pay a dividend or repurchase our stock. If we fail to perform our obligations under these and other covenants, the lenders' credit commitment could be terminated and any outstanding borrowings, together with accrued interest, under the Revolving Facility could be declared immediately due and payable. The Company has a cross default provision that applies to our indebtedness having a principal amount in excess of $35.0 million.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	8. Commitments and Contingent Liabilities Legal Matters Between 2005 and 2012, the U.S. Environmental Protection Agency ("EPA") and the Ohio Environmental Protection Agency (“OEPA”) issued Notices of Violations (“NOVs”), alleging violations of air emission operating permits for our Haverhill and Granite City cokemaking facilities. We worked in a cooperative manner with the EPA, the OEPA and the Illinois Environmental Protection Agency to address the allegations and, in November 2014, entered into a consent decree with these parties in federal district court in the Southern District of Illinois. The consent decree included a civil penalty paid in December 2014, and a commitment to undertake capital projects to improve reliability and enhance environmental performance. The Haverhill project was completed in 2016, but completion of the Granite City project was delayed to June 2019, with SunCoke agreeing to pay an immaterial amount associated with the delay. Between 2010 and 2016, SunCoke Energy also received certain NOVs, Findings of Violations (“FOVs”), and information requests from the EPA, alleging violations of air operating permit conditions related to our Indiana Harbor cokemaking facility. To reach a settlement of these NOVs and FOVs, we met regularly with the EPA, the Indiana Department of Environmental Management and Cokenergy, LLC., an independent power producer that processes hot flue gas from our Indiana Harbor facility to reduce the sulfur and particulate content and produce steam and electricity. A consent decree among the parties was entered by the federal district court in the Northern District of Indiana during the fourth quarter of 2018. The settlement included a civil penalty paid in the fourth quarter of 2018, and implementation of certain capital projects, completed during the fourth quarter of 2019, to improve reliability and environmental performance of the coke ovens at the facility. The Company is a party to certain other pending and threatened claims, including matters related to commercial disputes, employment claims, personal injury claims, common law tort claims and environmental claims. Although the ultimate outcome of these claims cannot be ascertained at this time, it is reasonably possible that some portion of these claims could be resolved unfavorably to the Company. Management of the Company believes that any liability which may arise from these claims would not have a material adverse impact on our consolidated financial statements. Black Lung Benefit Liabilities The Company has obligations related to coal workers’ pneumoconiosis, or black lung, benefits to certain former coal miners and their dependents. Such benefits are provided for under Title IV of the Federal Coal Mine and Safety Act of 1969 and subsequent amendments, as well as for black lung benefits provided in the states of Virginia, Kentucky and West Virginia pursuant to workers’ compensation legislation. The Patient Protection and Affordable Care Act (“PPACA”), which was implemented in 2010, amended previous legislation related to coal workers’ black lung obligations. PPACA provides for the automatic extension of awarded lifetime benefits to surviving spouses and changes the legal criteria used to assess and award claims. We adjust our liability each year based upon actuarial calculations of our expected future payments for these benefits. Our independent actuarial consultants calculate the present value of the estimated black lung liability annually based on actuarial models utilizing our population of former coal miners, historical payout patterns of both the Company and the industry, actuarial mortality rates, disability incidence, medical costs, death benefits, dependents, discount rates and the current federally mandated payout rates. The estimated liability may be impacted by future changes in the statutory mechanisms, modifications by court decisions and changes in filing patterns driven by perceptions of success by claimants and their advisors, the impact of which cannot be estimated. The estimated liability was $55.9 million and $55.1 million at June 30, 2020 and

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	9. Share-Based Compensation Equity Classified Awards During the six months ended June 30, 2020, the Company granted share-based compensation to eligible participants under the SunCoke Energy, Inc. Long-Term Performance Enhancement Plan (“SunCoke LTPEP”). All awards vest immediately upon a qualifying termination of employment, as defined by the SunCoke LTPEP, following a change in control. Restricted Stock Units Settled in Shares The Company issued 304,332 stock-settled restricted stock units (“RSUs”) to certain employees for shares of the Company’s common stock during the six months ended June 30, 2020. The weighted average grant date fair value was $6.04 per share and was based on the closing price of our common stock on the day of the grant. The RSUs vest in three annual installments beginning one year from the date of grant. Performance Share Units The Company granted the following performance share units (“PSUs”) for shares of the Company's common stock during the six months ended June 30, 2020, for which the service period will end on December 31, 2022 and will vest during the first quarter of 2023: Shares Grant Date Fair Value per Share PSUs (1)(2) 228,248 $ 6.70 (1) The PSU awards are split 50/50 between the Company's three three (2) The number of PSUs ultimately awarded will be determined by the above performance measures versus targets and the Company's three The award may vest between zero and 250 percent of the original units granted. The fair value of the PSUs granted during the six months ended June 30, 2020 is based on the closing price of our common stock on the date of grant as well as a Monte Carlo simulation for the valuation of the TSR Modifier. Stock Options The Company did not grant any stock options during the six months ended June 30, 2020. Liability Classified Awards Restricted Stock Units Settled in Cash During the six months ended June 30, 2020, the Company issued 263,998 restricted stock units to be settled in cash (“Cash RSUs”), which vest in three annual installments beginning one year from the grant date. The weighted average grant date fair value of the Cash RSUs granted during the six months ended June 30, 2020 was $6.04 per unit and was based on the closing price of our common stock on the day of grant. The Cash RSU liability is adjusted based on the closing price of our common stock at the end of each quarterly period and at both June 30, 2020 and December 31, 2019 was not material. Cash Incentive Award The Company also granted share-based compensation to eligible participants under the SunCoke Energy, Inc. Long-Term Cash Incentive Plan (“SunCoke LTCIP”), which became effective January 1, 2016. The SunCoke LTCIP is designed to provide for performance-based, cash-settled awards. All awards vest immediately upon a qualifying termination of employment, as defined by the SunCoke LTCIP, following a change in control. The Company issued a grant date fair value award of $2.0 million during the six months ended June 30, 2020, for which the service period will end on December 31, 2022 and will vest during the first quarter of 2023. The awards are split 50/50 between the Company's three three three The cash incentive award liability at June 30, 2020 was adjusted based on the Company's three Summary of Share-Based Compensation Expense Below is a summary of the compensation expense, unrecognized compensation costs, and the period for which the unrecognized compensation cost is expected to be recognized over: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 June 30, 2020 Compensation Expense (1) Unrecognized Compensation Cost Recognition Period (Dollars in millions) (Years) Equity Awards: Stock Options $ 0.1 $ 0.3 $ 0.3 $ 0.5 $ 0.2 1.4 RSUs 0.5 0.3 0.9 0.4 $ 1.5 1.3 PSUs 0.6 0.5 1.0 1.0 $ 2.3 1.6 Total equity awards $ 1.2 $ 1.1 $ 2.2 $ 1.9 Liability Awards: Cash RSUs $ 0.1 $ 0.3 $ 0.1 $ 0.7 $ 0.8 1.9 Cash incentive award 0.1 0.3 0.3 0.4 $ 1.3 2.1 Total liability awards $ 0.2 $ 0.6 $ 0.4 $ 1.1 (1) Compensation expense recognized by the Company is included in selling, general and administrative expenses on the Consolidated Statements of Income. The Company issued $0.1 million and $0.2 million of share-based compensation to the Company's Board of Directors during the six months ended June 30, 2020 and 2019, respectively.

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings per Share	10. Earnings per Share Basic earnings per share (“EPS”) has been computed by dividing net income attributable to SunCoke Energy, Inc. by the weighted average number of shares outstanding during the period. Except where the result would be anti-dilutive, diluted earnings per share has been computed to give effect to share-based compensation awards using the treasury stock method. The following table sets forth the reconciliation of the weighted-average number of common shares used to compute basic EPS to those used to compute diluted EPS: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Shares in millions) Weighted-average number of common shares outstanding-basic 82.8 65.9 83.2 65.4 Add: Effect of dilutive share-based compensation awards 0.1 0.2 0.2 0.3 Weighted-average number of shares-diluted 82.9 66.1 83.4 65.7 The following table shows equity awards that are excluded from the computation of diluted earnings per share as the shares would have been anti-dilutive: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Shares in millions) Stock options 3.1 3.0 3.1 2.9 Restricted stock units 0.3 — 0.3 — Performance stock units 0.2 0.2 0.2 0.2 Total 3.6 3.2 3.6 3.1

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurement	11. Fair Value Measurement The Company measures certain financial and non-financial assets and liabilities at fair value on a recurring basis. Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Fair value disclosures are reflected in a three-level hierarchy, maximizing the use of observable inputs and minimizing the use of unobservable inputs. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability on the measurement date. The three levels are defined as follows: • Level 1 - inputs to the valuation methodology are quoted prices (unadjusted) for an identical asset or liability in an active market. • Level 2 - inputs to the valuation methodology include quoted prices for a similar asset or liability in an active market or model-derived valuations in which all significant inputs are observable for substantially the full term of the asset or liability. • Level 3 - inputs to the valuation methodology are unobservable and significant to the fair value measurement of the asset or liability. Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Certain assets and liabilities are measured at fair value on a recurring basis. The Company's cash and cash equivalents were measured at fair value at June 30, 2020 and December 31, 2019 based on quoted prices in active markets for identical assets. These inputs are classified as Level 1 within the valuation hierarchy. Certain Financial Assets and Liabilities not Measured at Fair Value At June 30, 2020 and December 31, 2019, the fair value of the Company’s total debt was estimated to be $689.9 million and $776.1 million, respectively, compared to a carrying amount of $787.1 million and $800.5 million, respectively. The fair value was estimated by management based upon estimates of debt pricing provided by financial institutions, which are considered Level 2 inputs.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	12. Revenue from Contracts with Customers Cokemaking Substantially all our coke sales are made pursuant to long-term, take-or-pay coke sales agreements with AM USA, AK Steel and U.S. Steel, who are three of the largest blast furnace steelmakers in North America. The take-or-pay provisions in our agreements require our customers to purchase all or substantially all of the coke volumes produced as specified in the agreements or pay the contract price for any tonnage they do not purchase. The take-or-pay provisions of our agreements also require us to deliver minimum annual tonnage, which vary by contract, and have historically been approximately 4.1 million tons, covering at least 90 percent of each facility's nameplate capacity. As a result of the impacts the COVID-19 global pandemic has had on our customers, in July 2020, SunCoke entered into customer agreement amendments, providing near-term coke supply relief for our customers, in exchange for extending certain agreements These amended agreements reduced the minimum tonnage we are required to deliver to our customers to approximately 3.8 million tons, 3.7 million tons and 3.3 million tons in 2020, 2021 and 2022 through contract expiration, respectively. These amended coke sales agreements have an average remaining term of approximately six years. Disaggregated Sales and Other Operating Revenue The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: Cokemaking $ 310.0 $ 364.6 $ 661.5 $ 709.1 Energy 12.0 12.9 25.1 26.7 Logistics 7.1 19.4 16.0 41.4 Operating and licensing fees 7.2 10.0 15.7 19.7 Other 1.7 0.6 2.4 1.9 Sales and other operating revenue $ 338.0 $ 407.5 $ 720.7 $ 798.8 The following table provides disaggregated sales and other operating revenue by customer: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: AM USA $ 180.3 $ 192.0 $ 376.1 $ 389.6 AM Brazil 7.2 10.0 15.7 19.7 AK Steel 89.8 112.7 197.7 216.8 U.S. Steel 51.0 68.9 109.9 123.0 Other 9.7 23.9 21.3 49.7 Sales and other operating revenue $ 338.0 $ 407.5 $ 720.7 $ 798.8

Business Segment Information

Business Segment Information	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Business Segment Information	13. Business Segment Information The Company reports its business through three segments: Domestic Coke, Brazil Coke and Logistics. The Domestic Coke segment includes the Jewell, Indiana Harbor, Haverhill, Granite City and Middletown cokemaking facilities. Each of these facilities produces coke, and all facilities except Jewell recover waste heat, which is converted to steam or electricity. The Brazil Coke segment includes the licensing and operating fees payable to us under long-term contracts with ArcelorMittal Brazil, under which we operate a cokemaking facility located in Vitória, Brazil through at least 2023. Logistics operations are comprised of CMT, KRT, Lake Terminal, which provides services to our Indiana Harbor cokemaking facility, and DRT, which provides services to our Jewell cokemaking facility. Handling and mixing results are presented in the Logistics segment. Corporate expenses that can be identified with a segment have been included in determining segment results. The remainder is included in Corporate and Other. Corporate and Other also includes activity from our legacy coal mining business. Segment assets are those assets utilized within a specific segment and exclude taxes. The following table includes Adjusted EBITDA, which is the measure of segment profit or loss reported to the chief operating decision maker for purposes of allocating resources to the segments and assessing their performance: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: Domestic Coke $ 323.5 $ 378.0 $ 688.7 $ 737.3 Brazil Coke 7.2 10.0 15.7 19.7 Logistics 7.3 19.5 16.3 41.8 Logistics intersegment sales 5.2 6.7 11.8 13.2 Elimination of intersegment sales (5.2) (6.7) (11.8) (13.2) Total sales and other operating revenues $ 338.0 $ 407.5 $ 720.7 $ 798.8 Adjusted EBITDA: Domestic Coke $ 61.6 $ 56.3 $ 125.0 $ 114.8 Brazil Coke 3.2 4.3 7.3 8.8 Logistics 3.0 11.8 6.3 24.5 Corporate and Other (1) (8.8) (9.3) (17.5) (17.7) Total Adjusted EBITDA $ 59.0 $ 63.1 $ 121.1 $ 130.4 Depreciation and amortization expense: Domestic Coke $ 30.4 $ 30.6 $ 60.9 $ 61.2 Brazil Coke 0.1 0.1 0.2 0.3 Logistics 3.2 6.0 6.4 12.1 Corporate and Other 0.4 0.3 0.7 0.6 Total depreciation and amortization expense $ 34.1 $ 37.0 $ 68.2 $ 74.2 Capital expenditures: Domestic Coke $ 11.5 $ 31.5 $ 32.3 $ 50.4 Logistics 2.6 0.7 4.6 2.7 Total capital expenditures $ 14.1 $ 32.2 $ 36.9 $ 53.1 (1) Corporate and Other includes activity from our legacy coal mining business, which contributed Adjusted EBITDA losses of $2.4 million and $4.5 million during the three and six months ended June 30, 2020, respectively, as well as $2.0 million and $3.8 million during the three and six months ended June 30, 2019, respectively. Additionally, Corporate and Other includes foundry related research and development costs of $0.6 million and $1.4 million during the three and six months ended June 30, 2020, respectively. The following table sets forth the Company's segment assets: June 30, 2020 December 31, 2019 (Dollars in millions) Segment assets Domestic Coke $ 1,378.9 $ 1,434.2 Brazil Coke 11.8 14.6 Logistics 197.9 200.8 Corporate and Other 83.7 102.0 Segment assets, excluding tax assets 1,672.3 1,751.6 Tax assets 6.1 2.2 Total assets $ 1,678.4 $ 1,753.8 The Company evaluates the performance of its segments based on segment Adjusted EBITDA, which is defined as earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted for any impairments, gain on extinguishment of debt, changes to our contingent consideration liability related to our acquisition of CMT, and/or transaction costs incurred as part of the Simplification Transaction. EBITDA and Adjusted EBITDA do not represent and should not be considered alternatives to net income or operating income under GAAP and may not be comparable to other similarly titled measures in other businesses. Management believes Adjusted EBITDA is an important measure in assessing operating performance. Adjusted EBITDA provides useful information to investors because it highlights trends in our business that may not otherwise be apparent when relying solely on GAAP measures and because it eliminates items that have less bearing on our operating performance. EBITDA and Adjusted EBITDA are not measures calculated in accordance with GAAP, and they should not be considered a substitute for net income or any other measure of financial performance presented in accordance with GAAP. Additionally, other companies may calculate Adjusted EBITDA differently than we do, limiting its usefulness as a comparative measure. Below is a reconciliation of Adjusted EBITDA to net income, which is its most directly comparable financial measure calculated and presented in accordance with GAAP: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Net income attributable to SunCoke Energy, Inc. $ 6.5 $ 2.3 $ 11.4 $ 12.1 Add: Net income attributable to noncontrolling interests 1.3 1.0 2.3 3.4 Net income $ 7.8 $ 3.3 $ 13.7 $ 15.5 Add: Depreciation and amortization expense 34.1 37.0 68.2 74.2 Interest expense, net 14.9 15.1 29.5 29.9 Gain on extinguishment of debt — — (2.9) — Income tax expense 2.2 3.2 12.6 6.2 Contingent consideration adjustments (1) — 0.1 — (0.3) Simplification Transaction costs (2) — 4.4 — 4.9 Adjusted EBITDA $ 59.0 $ 63.1 $ 121.1 $ 130.4 Subtract: Adjusted EBITDA attributable to noncontrolling interests (3) 2.3 18.6 4.3 37.5 Adjusted EBITDA attributable to SunCoke Energy, Inc. $ 56.7 $ 44.5 $ 116.8 $ 92.9 (1) In connection with the CMT acquisition, the Company entered into a contingent consideration arrangement that required the Company to make future payments to the seller based on future volume over a specified threshold, price and contract renewals. Contingent consideration adjustments in the first half of 2019 were primarily the result of modifications to the volume forecast. This liability was written to zero during the third quarter of 2019, and the related contract was terminated in 2020. (2) Costs expensed by the Partnership associated with the Simplification Transaction.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2020
Noncontrolling Interest [Abstract]
Schedule of Changes in Ownership Interest	The following table summarizes the effects of the changes in the Company's ownership interest in the Partnership on SunCoke's equity: Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 (Dollars in millions) Net income attributable to SunCoke Energy, Inc. $ 2.3 $ 12.1 Increase in SunCoke Energy, Inc. equity for the change in ownership interest in the Partnership (1) 182.5 182.5 Change from net income attributable to SunCoke Energy, Inc. and transfers from noncontrolling interest $ 184.8 $ 194.6

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
Components of Inventories	The components of inventories were as follows: June 30, 2020 December 31, 2019 (Dollars in millions) Coal $ 78.3 $ 94.4 Coke 11.1 8.1 Materials, supplies and other 45.8 44.5 Total inventories $ 135.2 $ 147.0

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The components of other intangible assets, net were as follows: June 30, 2020 December 31, 2019 Weighted - Average Remaining Amortization Years Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net (Dollars in millions) Customer contracts 1 $ 7.7 $ 7.5 $ 0.2 $ 7.7 $ 7.2 $ 0.5 Customer relationships 4 6.7 4.2 2.5 6.7 3.9 2.8 Permits 22 31.7 1.0 30.7 31.7 0.3 31.4 Total $ 46.1 $ 12.7 $ 33.4 $ 46.1 $ 11.4 $ 34.7

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	6 Months Ended
	Jun. 30, 2020
Payables and Accruals [Abstract]
Accrued Liabilities	Accrued liabilities consisted of the following: June 30, 2020 December 31, 2019 (Dollars in millions) Accrued benefits $ 13.9 $ 21.7 Current portion of postretirement benefit obligation 2.9 2.9 Other taxes payable 12.2 9.9 Current portion of black lung liability 4.6 4.6 Other 8.1 8.2 Total accrued liabilities $ 41.7 $ 47.3

Debt and Financing Obligation (

Debt and Financing Obligation (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Schedule of Total Debt	Total debt and financing obligation, including the current portion of the financing obligation, consisted of the following: June 30, 2020 December 31, 2019 (Dollars in millions) 7.50 percent senior notes, due 2025 ("2025 Senior Notes") $ 638.0 $ 650.0 $400.0 million revolving credit facility, due 2024 ("Revolving Facility") 143.3 143.3 5.82 percent financing obligation, due 2021 ("Financing Obligation") 5.8 7.2 Total borrowings 787.1 800.5 Original issue discount (3.9) (4.3) Debt issuance costs (12.1) (13.3) Total debt and financing obligation $ 771.1 $ 782.9 Less: current portion of financing obligation 3.0 2.9 Total long-term debt and financing obligation $ 768.1 $ 780.0

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation, PSUs, Activity	The Company granted the following performance share units (“PSUs”) for shares of the Company's common stock during the six months ended June 30, 2020, for which the service period will end on December 31, 2022 and will vest during the first quarter of 2023: Shares Grant Date Fair Value per Share PSUs (1)(2) 228,248 $ 6.70 (1) The PSU awards are split 50/50 between the Company's three three three
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan	Below is a summary of the compensation expense, unrecognized compensation costs, and the period for which the unrecognized compensation cost is expected to be recognized over: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 June 30, 2020 Compensation Expense (1) Unrecognized Compensation Cost Recognition Period (Dollars in millions) (Years) Equity Awards: Stock Options $ 0.1 $ 0.3 $ 0.3 $ 0.5 $ 0.2 1.4 RSUs 0.5 0.3 0.9 0.4 $ 1.5 1.3 PSUs 0.6 0.5 1.0 1.0 $ 2.3 1.6 Total equity awards $ 1.2 $ 1.1 $ 2.2 $ 1.9 Liability Awards: Cash RSUs $ 0.1 $ 0.3 $ 0.1 $ 0.7 $ 0.8 1.9 Cash incentive award 0.1 0.3 0.3 0.4 $ 1.3 2.1 Total liability awards $ 0.2 $ 0.6 $ 0.4 $ 1.1 (1) Compensation expense recognized by the Company is included in selling, general and administrative expenses on the Consolidated Statements of Income.
Schedule of Unrecognized Compensation Cost, Nonvested Awards	Below is a summary of the compensation expense, unrecognized compensation costs, and the period for which the unrecognized compensation cost is expected to be recognized over: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 June 30, 2020 Compensation Expense (1) Unrecognized Compensation Cost Recognition Period (Dollars in millions) (Years) Equity Awards: Stock Options $ 0.1 $ 0.3 $ 0.3 $ 0.5 $ 0.2 1.4 RSUs 0.5 0.3 0.9 0.4 $ 1.5 1.3 PSUs 0.6 0.5 1.0 1.0 $ 2.3 1.6 Total equity awards $ 1.2 $ 1.1 $ 2.2 $ 1.9 Liability Awards: Cash RSUs $ 0.1 $ 0.3 $ 0.1 $ 0.7 $ 0.8 1.9 Cash incentive award 0.1 0.3 0.3 0.4 $ 1.3 2.1 Total liability awards $ 0.2 $ 0.6 $ 0.4 $ 1.1 (1) Compensation expense recognized by the Company is included in selling, general and administrative expenses on the Consolidated Statements of Income.

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Reconciliation of Weighted-Average Number of Common Shares Used to Compute Basic EPS to Those Used to Compute Diluted EPS	The following table sets forth the reconciliation of the weighted-average number of common shares used to compute basic EPS to those used to compute diluted EPS: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Shares in millions) Weighted-average number of common shares outstanding-basic 82.8 65.9 83.2 65.4 Add: Effect of dilutive share-based compensation awards 0.1 0.2 0.2 0.3 Weighted-average number of shares-diluted 82.9 66.1 83.4 65.7
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table shows equity awards that are excluded from the computation of diluted earnings per share as the shares would have been anti-dilutive: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Shares in millions) Stock options 3.1 3.0 3.1 2.9 Restricted stock units 0.3 — 0.3 — Performance stock units 0.2 0.2 0.2 0.2 Total 3.6 3.2 3.6 3.1

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: Cokemaking $ 310.0 $ 364.6 $ 661.5 $ 709.1 Energy 12.0 12.9 25.1 26.7 Logistics 7.1 19.4 16.0 41.4 Operating and licensing fees 7.2 10.0 15.7 19.7 Other 1.7 0.6 2.4 1.9 Sales and other operating revenue $ 338.0 $ 407.5 $ 720.7 $ 798.8 The following table provides disaggregated sales and other operating revenue by customer: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: AM USA $ 180.3 $ 192.0 $ 376.1 $ 389.6 AM Brazil 7.2 10.0 15.7 19.7 AK Steel 89.8 112.7 197.7 216.8 U.S. Steel 51.0 68.9 109.9 123.0 Other 9.7 23.9 21.3 49.7 Sales and other operating revenue $ 338.0 $ 407.5 $ 720.7 $ 798.8

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Business Segment Information	The following table includes Adjusted EBITDA, which is the measure of segment profit or loss reported to the chief operating decision maker for purposes of allocating resources to the segments and assessing their performance: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Sales and other operating revenue: Domestic Coke $ 323.5 $ 378.0 $ 688.7 $ 737.3 Brazil Coke 7.2 10.0 15.7 19.7 Logistics 7.3 19.5 16.3 41.8 Logistics intersegment sales 5.2 6.7 11.8 13.2 Elimination of intersegment sales (5.2) (6.7) (11.8) (13.2) Total sales and other operating revenues $ 338.0 $ 407.5 $ 720.7 $ 798.8 Adjusted EBITDA: Domestic Coke $ 61.6 $ 56.3 $ 125.0 $ 114.8 Brazil Coke 3.2 4.3 7.3 8.8 Logistics 3.0 11.8 6.3 24.5 Corporate and Other (1) (8.8) (9.3) (17.5) (17.7) Total Adjusted EBITDA $ 59.0 $ 63.1 $ 121.1 $ 130.4 Depreciation and amortization expense: Domestic Coke $ 30.4 $ 30.6 $ 60.9 $ 61.2 Brazil Coke 0.1 0.1 0.2 0.3 Logistics 3.2 6.0 6.4 12.1 Corporate and Other 0.4 0.3 0.7 0.6 Total depreciation and amortization expense $ 34.1 $ 37.0 $ 68.2 $ 74.2 Capital expenditures: Domestic Coke $ 11.5 $ 31.5 $ 32.3 $ 50.4 Logistics 2.6 0.7 4.6 2.7 Total capital expenditures $ 14.1 $ 32.2 $ 36.9 $ 53.1 (1) Corporate and Other includes activity from our legacy coal mining business, which contributed Adjusted EBITDA losses of $2.4 million and $4.5 million during the three and six months ended June 30, 2020, respectively, as well as $2.0 million and $3.8 million during the three and six months ended June 30, 2019, respectively. Additionally, Corporate and Other includes foundry related research and development costs of $0.6 million and $1.4 million during the three and six months ended June 30, 2020, respectively. The following table sets forth the Company's segment assets: June 30, 2020 December 31, 2019 (Dollars in millions) Segment assets Domestic Coke $ 1,378.9 $ 1,434.2 Brazil Coke 11.8 14.6 Logistics 197.9 200.8 Corporate and Other 83.7 102.0 Segment assets, excluding tax assets 1,672.3 1,751.6 Tax assets 6.1 2.2 Total assets $ 1,678.4 $ 1,753.8
Reconciliation of Adjusted EBITDA to Net Income	Below is a reconciliation of Adjusted EBITDA to net income, which is its most directly comparable financial measure calculated and presented in accordance with GAAP: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in millions) Net income attributable to SunCoke Energy, Inc. $ 6.5 $ 2.3 $ 11.4 $ 12.1 Add: Net income attributable to noncontrolling interests 1.3 1.0 2.3 3.4 Net income $ 7.8 $ 3.3 $ 13.7 $ 15.5 Add: Depreciation and amortization expense 34.1 37.0 68.2 74.2 Interest expense, net 14.9 15.1 29.5 29.9 Gain on extinguishment of debt — — (2.9) — Income tax expense 2.2 3.2 12.6 6.2 Contingent consideration adjustments (1) — 0.1 — (0.3) Simplification Transaction costs (2) — 4.4 — 4.9 Adjusted EBITDA $ 59.0 $ 63.1 $ 121.1 $ 130.4 Subtract: Adjusted EBITDA attributable to noncontrolling interests (3) 2.3 18.6 4.3 37.5 Adjusted EBITDA attributable to SunCoke Energy, Inc. $ 56.7 $ 44.5 $ 116.8 $ 92.9 (1) In connection with the CMT acquisition, the Company entered into a contingent consideration arrangement that required the Company to make future payments to the seller based on future volume over a specified threshold, price and contract renewals. Contingent consideration adjustments in the first half of 2019 were primarily the result of modifications to the volume forecast. This liability was written to zero during the third quarter of 2019, and the related contract was terminated in 2020. (2) Costs expensed by the Partnership associated with the Simplification Transaction.

General (Details)

General (Details) T in Millions	6 Months Ended
	Jun. 30, 2020Cokemaking_facilityT
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Coke production experience	55 years
Number of facilities (in cokemaking facilities) | Cokemaking_facility	5
Period of existence	30 years
United States
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Coke making capacity (in tons)	4.2
Brazil
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of facilities (in cokemaking facilities) | Cokemaking_facility	1
Coke making capacity (in tons)	1.7
Convent, Louisiana, East Chicago, Indiana, West Virginia
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Coal handling capacity (in tons)	40
Coal storage capacity (in tons)	3

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details)	Jun. 27, 2019
Suncoke Inc
Subsidiary, Sale of Stock [Line Items]
Ownership interest of general partnership (as a percent)	60.40%
Interest in partnership (as a percent)	2.00%
Public Unitholders
Subsidiary, Sale of Stock [Line Items]
Ownership interest, public (as a percent)	37.60%

Acquisitions (Schedule of Non-C

Acquisitions (Schedule of Non-Controlling Interest) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Subsidiary, Sale of Stock [Line Items]
Net income attributable to SunCoke Energy, Inc.	$ 6.5	$ 2.3	$ 11.4	$ 12.1
Public Unit Purchase Program
Subsidiary, Sale of Stock [Line Items]
Net income attributable to SunCoke Energy, Inc.		2.3		12.1
Increase (decrease) in SunCoke Energy, Inc. equity for the change in ownership interest in the Partnership		182.5		182.5
Change from net income attributable to SunCoke Energy, Inc. and transfers from noncontrolling interest		$ 184.8		$ 194.6

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Coal	$ 78.3	$ 94.4
Coke	11.1	8.1
Materials, supplies and other	45.8	44.5
Total inventories	$ 135.2	$ 147

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Domestic Coke | Operating Segments
Goodwill [Line Items]
Goodwill	$ 3.4	$ 3.4

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Gross and Net Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 46.1	$ 46.1
Accumulated Amortization	12.7	11.4
Net	$ 33.4	34.7
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization Years	1 year
Gross Carrying Amount	$ 7.7	7.7
Accumulated Amortization	7.5	7.2
Net	$ 0.2	0.5
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization Years	4 years
Gross Carrying Amount	$ 6.7	6.7
Accumulated Amortization	4.2	3.9
Net	$ 2.5	2.8
Permits
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization Years	22 years
Gross Carrying Amount	$ 31.7	31.7
Accumulated Amortization	1	0.3
Net	$ 30.7	$ 31.4

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Intangible Assets Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Total amortization expense of intangible assets	$ 0.6	$ 2.7	$ 1.3	$ 5.4

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 2.2	$ 3.2	$ 12.6	$ 6.2
Effective income tax rate (as a percent)	(22.00%)	49.20%	(47.90%)	28.60%
Deferred income tax expense from merger			$ 6.5
Income tax refunds					$ 3.9
Tax benefit from COVID-19 impact			$ 1.5

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued benefits	$ 13.9	$ 21.7
Current portion of postretirement benefit obligation	2.9	2.9
Other taxes payable	12.2	9.9
Current portion of black lung liability	4.6	4.6
Other	8.1	8.2
Total accrued liabilities	$ 41.7	$ 47.3

Debt and Financing Obligation -

Debt and Financing Obligation - Schedule of Debt (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total borrowings	$ 787,100,000	$ 800,500,000
Original issue discount	(3,900,000)	(4,300,000)
Debt issuance costs	(12,100,000)	(13,300,000)
Total debt and financing obligation	771,100,000	782,900,000
Less: current portion of financing obligation	3,000,000	2,900,000
Long-term debt and financing obligation	768,100,000	780,000,000
7.50 percent senior notes, due 2025 ("2025 Senior Notes") | Senior notes
Debt Instrument [Line Items]
Total borrowings	$ 638,000,000	650,000,000
Interest rate on senior notes (as a percent)	7.50%
Revolving Credit Facility, Due 2024 [Member] | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total borrowings	$ 143,300,000	143,300,000
Maximum borrowing capacity	400,000,000
5.82 percent financing obligation, due 2021 ("Financing Obligation") | Financing Obligation
Debt Instrument [Line Items]
Total borrowings	$ 5,800,000	$ 7,200,000
Interest rate on senior notes (as a percent)	5.82%

Debt and Financing Obligation_2

Debt and Financing Obligation - 2025 Senior Notes Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020
Debt Instrument [Line Items]
Gain on extinguishment of debt	$ 0	$ 0	$ 2.9	$ 0
7.50 percent senior notes, due 2025 ("2025 Senior Notes") | Senior notes
Debt Instrument [Line Items]
Repurchased debt					$ 12
Payment for debt repurchase			8.9
Gain on extinguishment of debt			$ 2.9

Debt and Financing Obligation_3

Debt and Financing Obligation - Revolving Facility Narrative (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Outstanding balance	$ 787,100,000	$ 800,500,000
Revolving Credit Facility, Due 2024 [Member] | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	400,000,000
Letters of credit outstanding under revolving facility	11,800,000
Outstanding balance	143,300,000	$ 143,300,000
Remaining borrowing capacity	244,900,000
Revolving Credit Facility, Due 2024 [Member] | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Outstanding balance	$ 11,500,000

Debt and Financing Obligation_4

Debt and Financing Obligation - Covenants Narrative (Details) - Line of Credit - Revolving credit facility - Revolving Credit Facility, Due 2024 [Member]	Jun. 30, 2020USD ($)
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio	4.50
Minimum consolidated interest coverage ratio	2.50
Cross default covenant threshold	$ 35,000,000

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Details) - Uninsured Risk - USD ($) $ in Millions	Feb. 21, 2020	Mar. 31, 2014	Jun. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Accrual for black lung liability			$ 55.9	$ 55.1
Accrual for black lung liability, current			$ 4.6	$ 4.6
Collateral to secure black lung obligations	$ 40.4	$ 8.4

Share-Based Compensation (Detai

Share-Based Compensation (Details Textual) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)annual_installment$ / sharesshares	Jun. 30, 2019USD ($)
Director
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Compensation expense | $	$ 0.1	$ 0.2
Restricted stock units
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Restricted stock (in shares)	304,332
Fair value grant (in dollars per share) | $ / shares	$ 6.04
Number of annual installment in which stock option exercisable (in installments) | annual_installment	3
Period from grant date for annual installment (in years)	1 year
PSUs | Minimum
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Percent of original award granted	0.00%
PSUs | Maximum
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Percent of original award granted	250.00%
Stock options
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Options granted (in shares)	0
Restricted Stock Units Settled in Cash
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Restricted stock (in shares)	263,998
Fair value grant (in dollars per share) | $ / shares	$ 6.04
Number of annual installment in which stock option exercisable (in installments) | annual_installment	3
Period from grant date for annual installment (in years)	1 year
Cash incentive award | Suncoke LTCIP
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Grant date fair value of award | $	$ 2
Percent of award allocation	50.00%
Measurement period	3 years

Share-Based Compensation - Perf

Share-Based Compensation - Performance Share Units (Details) - PSUs - Suncoke LTPEP	6 Months Ended
	Jun. 30, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares) | shares	228,248
Weighted Average Per Share Grant Date Fair Value (in dollars per share) | $ / shares	$ 6.70
Pre-tax return of capital for Coke and Coal Logistics businesses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of award allocation	50.00%
Measurement period	3 years
TSR | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement results payout percentage	75.00%
TSR | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement results payout percentage	125.00%

Share-Based Compensation - Comp

Share-Based Compensation - Compensation Expense and Unrecognized Compensation Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized Compensation Cost	$ 0.2		$ 0.2
Recognition Period			1 year 4 months 24 days
Stock options | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	0.1	$ 0.3	$ 0.3	$ 0.5
RSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized Compensation Cost	1.5		$ 1.5
Recognition Period			1 year 3 months 18 days
RSUs | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	0.5	0.3	$ 0.9	0.4
PSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized Compensation Cost	2.3		$ 2.3
Recognition Period			1 year 7 months 6 days
PSUs | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	0.6	0.5	$ 1	1
Total equity awards | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	1.2	1.1	2.2	1.9
Cash RSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized Compensation Cost	0.8		$ 0.8
Recognition Period			1 year 10 months 24 days
Cash RSUs | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	0.1	0.3	$ 0.1	0.7
Cash incentive award | Suncoke LTCIP
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized Compensation Cost	1.3		$ 1.3
Recognition Period			2 years 1 month 6 days
Cash incentive award | Selling, General and Administrative Expenses | Suncoke LTCIP
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	0.1	0.3	$ 0.3	0.4
Total liability awards | Selling, General and Administrative Expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation expense	$ 0.2	$ 0.6	$ 0.4	$ 1.1

Earnings per Share - Computatio

Earnings per Share - Computation of EPS (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Weighted-average number of common shares outstanding-basic	82.8	65.9	83.2	65.4
Add: Effect of dilutive share-based compensation awards	0.1	0.2	0.2	0.3
Weighted-average number of shares-diluted	82.9	66.1	83.4	65.7

Earnings per Share - Antidiluti

Earnings per Share - Antidilutive Securities Excluded From EPS Calculation (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential dilutive effect excluded from the computation of diluted weighted-average shares outstanding (in shares)	3.6	3.2	3.6	3.1
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential dilutive effect excluded from the computation of diluted weighted-average shares outstanding (in shares)	3.1	3	3.1	2.9
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential dilutive effect excluded from the computation of diluted weighted-average shares outstanding (in shares)	0.3	0	0.3	0
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential dilutive effect excluded from the computation of diluted weighted-average shares outstanding (in shares)	0.2	0.2	0.2	0.2

Fair Value Measurement (Details

Fair Value Measurement (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair value of Company's debt	$ 689.9	$ 776.1
Total borrowings	$ 787.1	$ 800.5

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Narrative (Details) - Cokemaking - T T in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of facility capacity	90.00%
Facility capacity (in tons)	4.1
Average remaining term	6 years
Forecast
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Facility capacity (in tons)		3.3	3.7	3.8

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Disaggregated Sales and Other Operating Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	$ 338	$ 407.5	$ 720.7	$ 798.8
AM USA
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	180.3	192	376.1	389.6
AM Brazil
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	7.2	10	15.7	19.7
AK Steel
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	89.8	112.7	197.7	216.8
U.S. Steel
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	51	68.9	109.9	123
Other
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	9.7	23.9	21.3	49.7
Cokemaking
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	310	364.6	661.5	709.1
Energy
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	12	12.9	25.1	26.7
Logistics
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	7.1	19.4	16	41.4
Operating and licensing fees
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	7.2	10	15.7	19.7
Other
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	$ 1.7	$ 0.6	$ 2.4	$ 1.9

Business Segment Information (D

Business Segment Information (Details Textual)	6 Months Ended
	Jun. 30, 2020segment
Segment Reporting [Abstract]
Number of reportable segments	3

Business Segment Information -

Business Segment Information - Segment Profit or Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Sales and other operating revenue	$ 338	$ 407.5	$ 720.7	$ 798.8
Adjusted EBITDA	59	63.1	121.1	130.4
Depreciation and amortization expense	34.1	37	68.2	74.2
Capital expenditures	14.1	32.2	36.9	53.1
Domestic Coke
Segment Reporting Information [Line Items]
Adjusted EBITDA	61.6	56.3	125	114.8
Depreciation and amortization expense	30.4	30.6	60.9	61.2
Capital expenditures	11.5	31.5	32.3	50.4
Brazil Coke
Segment Reporting Information [Line Items]
Adjusted EBITDA	3.2	4.3	7.3	8.8
Depreciation and amortization expense	0.1	0.1	0.2	0.3
Logistics
Segment Reporting Information [Line Items]
Adjusted EBITDA	3	11.8	6.3	24.5
Depreciation and amortization expense	3.2	6	6.4	12.1
Capital expenditures	2.6	0.7	4.6	2.7
Corporate and Other
Segment Reporting Information [Line Items]
Adjusted EBITDA	(8.8)	(9.3)	(17.5)	(17.7)
Depreciation and amortization expense	0.4	0.3	0.7	0.6
Research and development costs	0.6		1.4
Coal Mining
Segment Reporting Information [Line Items]
Adjusted EBITDA	(2.4)	(2)	(4.5)	(3.8)
Operating Segments | Domestic Coke
Segment Reporting Information [Line Items]
Sales and other operating revenue	323.5	378	688.7	737.3
Operating Segments | Brazil Coke
Segment Reporting Information [Line Items]
Sales and other operating revenue	7.2	10	15.7	19.7
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Sales and other operating revenue	7.3	19.5	16.3	41.8
Elimination of intersegment sales
Segment Reporting Information [Line Items]
Sales and other operating revenue	(5.2)	(6.7)	(11.8)	(13.2)
Elimination of intersegment sales | Logistics
Segment Reporting Information [Line Items]
Sales and other operating revenue	$ 5.2	$ 6.7	$ 11.8	$ 13.2

Business Segment Information _2

Business Segment Information - Segment Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Segment assets, excluding tax assets	$ 1,672.3	$ 1,751.6
Income tax receivable	6.1	2.2
Total assets	1,678.4	1,753.8
Operating Segments | Domestic Coke
Segment Reporting Information [Line Items]
Segment assets, excluding tax assets	1,378.9	1,434.2
Operating Segments | Brazil Coke
Segment Reporting Information [Line Items]
Segment assets, excluding tax assets	11.8	14.6
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Segment assets, excluding tax assets	197.9	200.8
Corporate and Other
Segment Reporting Information [Line Items]
Segment assets, excluding tax assets	$ 83.7	$ 102

Business Segment Information _3

Business Segment Information - Adjusted EBITDA (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net income attributable to SunCoke Energy, Inc.	$ 6,500,000		$ 2,300,000		$ 11,400,000	$ 12,100,000
Add: Net income attributable to noncontrolling interests	1,300,000		1,000,000		2,300,000	3,400,000
Net income	7,800,000	$ 5,900,000	3,300,000	$ 12,200,000	13,700,000	15,500,000
Add:
Depreciation and amortization expense	34,100,000		37,000,000		68,200,000	74,200,000
Interest expense, net	14,900,000		15,100,000		29,500,000	29,900,000
Gain on extinguishment of debt	0		0		(2,900,000)	0
Income tax expense	2,200,000		3,200,000		12,600,000	6,200,000
Contingent consideration adjustments	0		100,000		0	(300,000)
Simplification Transaction costs	0		4,400,000		0	4,900,000
Adjusted EBITDA	59,000,000		63,100,000		121,100,000	130,400,000
Subtract: Adjusted EBITDA attributable to noncontrolling interests	2,300,000		18,600,000		4,300,000	37,500,000
Adjusted EBITDA attributable to SunCoke Energy, Inc.	$ 56,700,000		$ 44,500,000		$ 116,800,000	$ 92,900,000
SunCoke Energy Partners, L.P. | Fair Value, Inputs, Level 3 | Convent Marine Terminal
Add:
Contingent consideration liability							$ 0