SunCoke Energy (SXC) 10-K 15 Feb 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 08, 2019	Jun. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	SunCoke Energy, Inc.
Entity Central Index Key	1,514,705
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		64,756,093
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 863,299,596

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Sales and other operating revenue	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
Costs and operating expenses
Cost of products sold and operating expenses									1,124.5	1,020.1	905.9
Selling, general and administrative expenses									66.1	79	90.6
Depreciation and amortization expense									141.6	128.2	114.2
Loss on divestiture of business									0	0	14.7
Total costs and operating expenses									1,332.2	1,227.3	1,125.4
Operating income									118.7	104.2	97.9
Interest expense, net									61.4	61.9	54.8
Loss (gain) on extinguishment of debt							20.2		0.3	20.4	(25)
Income before income tax expense (benefit) and loss from equity method investment									57	21.9	68.1
Income tax expense (benefit)									4.6	(81.6)	8.6
Loss from equity method investment									5.4	0	0
Net income	5.5	17.1	11.4	13	173.9	18.8	(31.5)	(57.7)	47	103.5	59.5
Less: Net income (loss) attributable to noncontrolling interests	3.7	5.6	7.2	4.3	39.9	7.2	(7.3)	(58.7)	20.8	(18.9)	45.1
Net income attributable to SunCoke Energy, Inc.	$ 1.8	$ 11.5	$ 4.2	$ 8.7	$ 134	$ 11.6	$ (24.2)	$ 1	$ 26.2	$ 122.4	$ 14.4
Earnings attributable to SunCoke Energy, Inc. per common share:
Basic (in dollars per share)	$ 0.03	$ 0.18	$ 0.06	$ 0.13	$ 2.08	$ 0.18	$ (0.38)	$ 0.02	$ 0.40	$ 1.90	$ 0.22
Diluted (in dollars per share)	$ 0.03	$ 0.18	$ 0.06	$ 0.13	$ 2.05	$ 0.18	$ (0.38)	$ 0.02	$ 0.40	$ 1.88	$ 0.22
Weighted average number of common shares outstanding:
Basic (in shares)									64.7	64.3	64.2
Diluted (in shares)									65.5	65.2	64.4

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 5.5	$ 17.1	$ 11.4	$ 13	$ 173.9	$ 18.8	$ (31.5)	$ (57.7)	$ 47	$ 103.5	$ 59.5
Other comprehensive income (loss):
Reclassifications of actuarial loss amortization and prior service benefit to earnings (net of related tax expense of zero for all years)									(0.1)	0.2	0
Retirement benefit plans funded status adjustment (net of related tax benefit of $0.2 million, $0.3 million and $0.1 million, respectively)									0.6	(0.8)	(0.2)
Currency translation adjustment									(1.4)	(0.5)	1
Recognition of accumulated currency translation loss upon sale of equity method investment									9	0	0
Comprehensive income									55.1	102.4	60.3
Less: Comprehensive income (loss) attributable to noncontrolling interests									20.8	(18.9)	45.1
Comprehensive income attributable to SunCoke Energy, Inc.									$ 34.3	$ 121.3	$ 15.2

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net of related tax benefit, reclassifications of prior service benefit and actuarial loss amortization to earnings	$ 0	$ 0	$ 0
Retirement expense (benefit) plans funded status adjustment, tax	$ 0.2	$ 0.3	$ 0.1

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 145.7	$ 120.2
Receivables	75.4	68.5
Inventories	110.4	111
Income tax receivable	0.7	4.8
Other current assets	2.8	6.7
Total current assets	335	311.2
Properties, plants and equipment (net of accumulated depreciation of $855.8 million and $733.2 million at December 31, 2018 and 2017, respectively)	1,471.1	1,501.3
Goodwill	76.9	76.9
Other intangible assets, net	156.8	167.9
Deferred charges and other assets	5.5	2.8
Total assets	2,045.3	2,060.1
Liabilities and Equity
Accounts payable	115	115.5
Accrued liabilities	45.6	53.2
Deferred revenue	3	1.7
Current portion of long-term debt and financing obligation	3.9	2.6
Interest payable	3.6	5.4
Total current liabilities	171.1	178.4
Long-term debt and financing obligation	834.5	861.1
Accrual for black lung benefits	44.9	44.9
Retirement benefit liabilities	25.2	28.2
Deferred income taxes	254.7	257.8
Asset retirement obligations	14.6	14
Other deferred credits and liabilities	17.6	16.1
Total liabilities	1,362.6	1,400.5
Equity
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at both December 31, 2018 and 2017	0	0
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 72,233,750 and 72,006,905 shares at December 31, 2018 and 2017, respectively	0.7	0.7
Treasury stock, 7,477,657 shares at both December 31, 2018 and 2017, respectively	(140.7)	(140.7)
Additional paid-in capital	488.8	486.2
Accumulated other comprehensive loss	(13.1)	(21.2)
Retained earnings	127.4	101.2
Total SunCoke Energy, Inc. stockholders' equity	463.1	426.2
Noncontrolling interests	219.6	233.4
Total equity	682.7	659.6
Total liabilities and equity	$ 2,045.3	$ 2,060.1

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 855.8	$ 733.2
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)	72,233,750	72,006,905
Treasury stock, shares (in shares)	7,477,657	7,477,657

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 47	$ 103.5	$ 59.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	141.6	128.2	114.2
Deferred income tax (benefit) expense	(3.4)	(87.2)	3.1
Payments in excess of expense for postretirement plan benefits	(2.4)	(1.8)	(2.6)
Share-based compensation expense	3.1	4.8	6.5
Loss (gain) on extinguishment of debt, net	0.3	20.4	(25)
Loss on divestiture of business	0	0	14.7
Loss from equity method investment	5.4	0	0
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables	(6.9)	(7.8)	3.7
Inventories	0.6	(18.5)	29.4
Accounts payable	(0.7)	11.7	(0.8)
Accrued liabilities	(7.3)	2.6	6.8
Deferred revenue	1.3	(0.8)	0.4
Interest payable	(1.8)	(10.8)	(2.7)
Income taxes	4.5	(0.2)	7
Other	4.5	4.4	4.9
Net cash provided by operating activities	185.8	148.5	219.1
Cash Flows from Investing Activities:
Capital expenditures	(100.3)	(75.6)	(63.7)
Return of Brazilian investment	0	20.5	20.5
Divestiture of coal business	0	0	(12.8)
Sale of equity method investment	4	0	0
Other investing activities	0.5	0	2.1
Net cash used in investing activities	(95.8)	(55.1)	(53.9)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt	45	693.7	0
Repayment of long-term debt	(45.7)	(644.9)	(66.1)
Debt issuance costs	(0.5)	(17.4)	(0.2)
Proceeds from revolving facility	179.5	350	28
Repayment of revolving facility	(204.5)	(392)	(98.4)
Proceeds from financing obligation	0	0	16.2
Repayment of financing obligation	(2.6)	(2.5)	(1)
Cash distributions to noncontrolling interests	(31.9)	(47)	(49.4)
Acquisition of additional interest in the Partnership	(4.2)	(48.7)	0
Other financing activities	0.4	1.1	(1.4)
Net cash used in financing activities	(64.5)	(107.7)	(172.3)
Net increase (decrease) in cash, cash equivalents and restricted cash	25.5	(14.3)	(7.1)
Cash, cash equivalents and restricted cash at beginning of year	120.2	134.5	141.6
Cash, cash equivalents and restricted cash at end of year	145.7	120.2	134.5
Supplemental Disclosure of Cash Flow Information
Interest paid, net of capitalized interest of $3.2 million, $1.1 million and $5.0 million, respectively	59.6	67.9	53.4
Income taxes paid, net of refunds of $4.3 million, $1.0 million and $8.2 million, respectively	$ 3.7	$ 5.8	$ (2.3)

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Capitalized interest	$ 3.2	$ 1.1	$ 5
Tax refunds	$ 4.3	$ 1	$ 8.2

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total SunCoke Energy, Inc. Equity	Non-controlling Interests
Beginning balance at Dec. 31, 2015	$ 622.8	$ 0.7	$ (140.7)	$ 486.1	$ (19.8)	$ (36.4)	$ 289.9	$ 332.9
Beginning balance, shares at Dec. 31, 2015		71,489,448	7,477,657
Stockholders' Equity
Net income	59.5					14.4	14.4	45.1
Reclassifications of prior service cost and actuarial loss amortization to earnings (net of related tax expense of $3.4 million)	0
Retirement benefit plans funded status adjustment (net of related tax benefit of $0.2 million, $0.3 million and $0.1 million, respectively)	(0.2)				(0.2)		(0.2)
Currency translation adjustment	1				1		1
Recognition of accumulated currency translation loss upon sale of equity method investment	0
Cash distributions to noncontrolling interests	(49.2)							(49.2)
Share-based compensation expense	6.5			6.5			6.5
Share issuances, net of shares withheld for taxes and other equity activities	(0.5)			(0.5)			(0.5)
Share issuances, net of shares withheld for taxes and other equity activities, shares		217,856
Ending balance. shares at Dec. 31, 2016		71,707,304	7,477,657
Ending balance at Dec. 31, 2016	639.9	$ 0.7	$ (140.7)	492.1	(19)	(22)	311.1	328.8
Stockholders' Equity
Net income	103.5					122.4	122.4	(18.9)
Reclassifications of prior service cost and actuarial loss amortization to earnings (net of related tax expense of $3.4 million)	0.2				0.2		0.2
Retirement benefit plans funded status adjustment (net of related tax benefit of $0.2 million, $0.3 million and $0.1 million, respectively)	(0.8)				(0.8)		(0.8)
Currency translation adjustment	(0.5)				(0.5)		(0.5)
Recognition of accumulated currency translation loss upon sale of equity method investment	0
Cash distributions to noncontrolling interests	(47)							(47)
Share-based compensation expense	4.8			4.7			4.7	0.1
Share issuances, net of shares withheld for taxes and other equity activities	1.1			1.1			1.1
Share issuances, net of shares withheld for taxes and other equity activities, shares		299,601
Acquisition of additional interest in the Partnership:
Partnership unit repurchases and cash paid	(48.7)			(19.1)			(19.1)	(29.6)
Deferred tax adjustment	7.1			7.1			7.1
Ending balance. shares at Dec. 31, 2017		72,006,905	7,477,657
Ending balance at Dec. 31, 2017	659.6	$ 0.7	$ (140.7)	486.2	(21.2)	101.2	426.2	233.4
Acquisition of additional interest in the Partnership:
Cumulative effect from adoption of ASU 2016-09 | ASU 2016-09	0			0.3		(0.3)
Cumulative effect from adoption of ASU 2016-09 | ASU 2018-02	0			(1.1)		1.1
Net income	47					26.2	26.2	20.8
Reclassifications of prior service cost and actuarial loss amortization to earnings (net of related tax expense of $3.4 million)	(0.1)				(0.1)		(0.1)
Retirement benefit plans funded status adjustment (net of related tax benefit of $0.2 million, $0.3 million and $0.1 million, respectively)	0.6				0.6		0.6
Currency translation adjustment	(1.4)				(1.4)		(1.4)
Recognition of accumulated currency translation loss upon sale of equity method investment	9				9		9	0
Cash distributions to noncontrolling interests	(31.9)							(31.9)
Share-based compensation expense	3.1			3.1			3.1	0
Share issuances, net of shares withheld for taxes and other equity activities	0.7			0.7			0.7
Share issuances, net of shares withheld for taxes and other equity activities, shares		226,845
Partnership unit repurchases and cash paid	(4.2)			(1.5)			(1.5)	(2.7)
Deferred tax adjustment	0.3			0.3			0.3
Ending balance. shares at Dec. 31, 2018		72,233,750	7,477,657
Ending balance at Dec. 31, 2018	$ 682.7	$ 0.7	$ (140.7)	$ 488.8	$ (13.1)	$ 127.4	$ 463.1	$ 219.6

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Retirement expense (benefit) plans funded status adjustment, tax	$ 0.2	$ 0.3	$ 0.1
Net of related tax benefit, reclassifications of prior service benefit and actuarial loss amortization to earnings	$ 0	$ 0	$ 0

General and Basis of Presentati

General and Basis of Presentation	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General and Basis of Presentation	1. General and Basis of Presentation 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.”) with collective nameplate capacity to produce approximately 4.2 million tons of 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. 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. The logistics business has terminals in Indiana, West Virginia, Virginia, and Louisiana with 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. On June 27, 2018, we sold our 49 percent investment in VISA SunCoke Limited ("VISA SunCoke") for cash consideration of $4.0 million . Consequently, we recognized $9.0 million of accumulated currency translation losses and incurred $0.4 million of transaction costs, resulting in a net $5.4 million loss from equity method investment during 2018 on the Consolidated Statements of Income. Our investment in VISA SunCoke was previously accounted for as an equity method investment and was fully impaired in 2015. Therefore, its financial results had not been included in our financial statements since that time. The Company disposed of its coal mining operations in Virginia and West Virginia to Revelation Energy, LLC ("Revelation") in April 2016. Revelation assumed substantially all of our remaining coal mining assets and real estate, and was assigned substantially all of our mineral leases and a substantial portion of our mining reclamation obligations. Under the terms of the agreement, Revelation received $12.8 million from the Company to take ownership of the assets and liabilities. During 2016, the Company recognized losses associated with this divestiture of $14.7 million . Our consolidated financial statements include SunCoke Energy Partners, L.P. (the "Partnership"), a publicly-traded partnership. At December 31, 2018 , we owned the general partner of the Partnership, which consists of a 2.0 percent ownership interest and incentive distribution rights ("IDRs"), and a 60.4 percent limited partner interest in the Partnership. The remaining 37.6 percent interest in the Partnership was held by public unitholders. On February 5, 2019, the Company and the Partnership announced that they have entered into a definitive agreement whereby SunCoke will acquire all outstanding common units of the Partnership not already owned by SunCoke in a stock-for-unit merger transaction (the “Simplification Transaction”). Pursuant to the terms of this agreement ("Merger Agreement"), the Partnership's unaffiliated common unitholders will receive 1.40 SunCoke common shares plus a fraction of a SunCoke common share, based on a ratio as further described in the Merger Agreement, for each Partnership common unit. On behalf of the Partnership and its public unitholders, the terms of the Simplification Transaction were negotiated, reviewed and approved by the conflicts committee of the Board of Directors of the Partnership's general partner, which consisted solely of independent directors. The transaction was approved by the Board of Directors of the general partner of the Partnership and the Board of Directors of SunCoke. Following completion of the Simplification Transaction, the Partnership will become a wholly-owned subsidiary of SunCoke, the Partnership's common units will cease to be publicly traded and the Partnership's IDRs will be eliminated. The Simplification Transaction is expected to close late in the second quarter of 2019 or early in the third quarter of 2019, subject to customary closing conditions, including the approval by holders of a majority of the outstanding SunCoke common shares and Partnership common units, as well as customary regulatory approvals. SunCoke indirectly owns the majority of the Partnership common units, which is sufficient to approve the transaction on behalf of the holders of Partnership common units. 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 (“NYSE”) under the symbol “SXC.” Consolidation and Basis of Presentation The consolidated financial statements of the Company and its subsidiaries were prepared in accordance with accounting principles generally accepted in the U.S. ("GAAP") and include the assets, liabilities, revenues and expenses of the Company and all subsidiaries where we have a controlling financial interest. Intercompany transactions and balances have been eliminated in consolidation. Net income attributable to noncontrolling interest represents the common public unitholders’ interest in SunCoke Energy Partners, L.P. as well as a 14.8 percent third-party interest in our Indiana Harbor cokemaking facility.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts could differ from these estimates. Reclassifications Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the current year presentation. See the "Recently Adopted Accounting Pronouncements" section of this footnote for further details. Revenue Recognition The Company sells coke as well as steam and electricity and also provides mixing and/or handling services of coal and other aggregates. The Company also receives fees for operating the cokemaking plant in Brazil and for the licensing of its proprietary technology for use at this facility as well as reimbursement of substantially all of its operating costs. See Note 18 . Substantially all of the coke produced by the Company is sold pursuant to long-term contracts with its customers. The Company evaluates each of its contracts to determine whether the arrangement contains a lease under the applicable accounting standards. If the specific facts and circumstances indicate that it is remote that parties other than the contracted customer will take more than a minor amount of the coke that will be produced by the property, plant and equipment during the term of the coke supply agreement, and the price that the customer is paying for the coke is neither contractually fixed per unit nor equal to the current market price per unit at the time of delivery, then the long-term contract is deemed to contain a lease. The lease component of the price of coke represents the rental payment for the use of the property, plant and equipment, and all such payments are accounted for as contingent rentals as they are only earned by the Company when the coke is delivered and title passes to the customer. The total amount of revenue recognized by the Company for these contingent rentals represents less than 10 percent of consolidated sales and other operating revenues for each of the years ended December 31, 2018 , 2017 and 2016 . Upon adoption of Accounting Standard Codification ("ASC") 842, "Leases" , in 2019, these long-term contracts to sell coke will no longer be deemed to contain operating leases. Cash Equivalents The Company considers all highly liquid investments with a remaining maturity of three months or less at the time of purchase to be cash equivalents. These cash equivalents consist principally of certificates of deposit. Inventories Inventories are valued at the lower of cost or net realizable value. Cost is determined using the first-in, first-out method, except for the Company’s materials and supplies inventory, which are determined using the average-cost method. The Company utilizes the selling prices under its long-term coke supply contracts to record lower of cost or net realizable value inventory adjustments. Properties, Plants and Equipment Plants and equipment are depreciated on a straight-line basis over their estimated useful lives. Coke and energy plant, machinery and equipment are generally depreciated over 25 to 30 years. Logistics plant and equipment are generally depreciated over 15 to 35 years. Depreciation and amortization is excluded from cost of products sold and operating expenses and is presented separately on the Consolidated Statements of Income. Gains and losses on the disposal or retirement of fixed assets are reflected in earnings when the assets are sold or retired. Amounts incurred that extend an asset’s useful life, increase its productivity or add production capacity are capitalized. The Company accounts for changes in useful lives, when appropriate, as a change in estimate, with prospective application only. The Company capitalized interest of $3.2 million , $1.1 million , and $5.0 million in 2018 , 2017 and 2016 , respectively. Direct costs, such as outside labor, materials, internal payroll and benefits costs incurred during capital projects are capitalized; indirect costs are not capitalized. Normal repairs and maintenance costs are expensed as incurred. Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. A long-lived asset, or group of assets, is considered to be impaired when the undiscounted net cash flows expected to be generated by the asset are less than its carrying amount. Such estimated future cash flows are highly subjective and are based on numerous assumptions about future operations and market conditions. The impairment recognized is the amount by which the carrying amount exceeds the fair market value of the impaired asset, or group of assets. It is also difficult to precisely estimate fair market value because quoted market prices for our long-lived assets may not be readily available. Therefore, fair market value is generally based on the present values of estimated future cash flows using discount rates commensurate with the risks associated with the assets being reviewed for impairment. Goodwill and Other Intangibles Goodwill, which represents the excess of the purchase price over the fair value of net assets acquired, is tested 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. The Company performs its annual goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. The Company would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. See Note 8 . Intangible assets are primarily comprised of permits, customer contracts and customer relationships. Intangible assets are amortized over their useful lives in a manner that reflects the pattern in which the economic benefit of the intangible asset is consumed. Intangible assets are assessed for impairment when a triggering event occurs. Investment in Brazilian Cokemaking Operations On November 28, 2016, ArcelorMittal Brazil redeemed SunCoke’s indirectly held preferred and common equity interest in Sol Coqueria Tubarão S.A. ("Brazil Investment"), previously accounted for at cost, for consideration of $41.0 million . The Company received $20.5 million in cash at closing in 2016 and received the remaining $20.5 million in cash, plus interest of $0.2 million , in 2017. Starting in 2016, SunCoke receives $5.1 million in licensing fees per year, in addition to our per ton licensing fee, through 2023 related to the addition of certain patents to its existing intellectual property licensing agreement, which are currently in use by ArcelorMittal Brazil at the Brazil facility. The Company also extended the life of its patents with the Brazilian authorities through 2033, providing opportunity to extend the existing licensing agreement beyond 2023. Licensing fees are included in sales and other operating revenue on the Consolidated Statements of Income. Income Taxes Deferred tax asset and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those differences are projected to be recovered or settled. See Note 5 . The Company recognizes uncertain tax positions in its financial statements when minimum recognition threshold and measurement attributes are met in accordance with current accounting guidance. See Note 5 . Black Lung Benefit Liabilities The Company has obligations related to coal workers’ pneumoconiosis, or black lung, benefits to certain of our 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 act as a self-insurer for both state and federal black lung benefits and adjust our liability each year based upon actuarial calculations of our expected future payments for these benefits. See Note 13 . Postretirement Benefit Plan Liabilities The postretirement benefit plans, which are frozen, are unfunded and the accumulated postretirement benefit obligation is fully recognized on the Consolidated Balance Sheets. Actuarial gains (losses) and prior service costs (benefits) which have not yet been recognized in net income are recognized as a credit (charge) to accumulated other comprehensive income (loss). The credit (charge) to accumulated other comprehensive income (loss), which is reflected net of related tax effects, is subsequently recognized in net income when amortized as a component of postretirement benefit plans expense included in interest expense, net on the Consolidated Statements of Income. See Note 10 . Asset Retirement Obligations The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The associated asset retirement costs are capitalized as part of the carrying amount of the asset and depreciated over its remaining estimated useful life. The Company’s asset retirement obligations primarily relate to costs associated with restoring land to its original state. See Note 9 . Shipping and Handling Costs Shipping and handling costs are included in cost of products sold and operating expenses on the Consolidated Statements of Income and are generally passed through to our customers. The Company has elected the practical expedient under ASC 606, "Revenue from Contracts with Customers", to account for shipping and handling activities as a promise to fulfill the transfer of coke. Share-Based Compensation We measure the cost of employee services in exchange for equity instrument awards and cash awards based on the grant-date fair value of the award. The cash awards and performance metrics of equity awards are remeasured on a quarterly basis. The market metrics of equity awards are not remeasured. The total cost is recognized over the requisite service period. Award forfeitures are accounted for as they occur. The costs of equity awards and cash awards were recorded to additional paid-in capital and accrued liabilities, respectively, on the Consolidated Balance Sheets. See Note 15 . Fair Value Measurements The Company determines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As required, the Company utilizes valuation techniques that maximize the use of observable inputs (levels 1 and 2) and minimize the use of unobservable inputs (level 3) within the fair value hierarchy included in current accounting guidance. Assets and liabilities are classified within the fair value hierarchy based on the lowest level (least observable) input that is significant to the measurement in its entirety. See Note 17 . Currency Translation The functional currency of the Company’s Brazilian operations is the Brazilian real. The Company’s Brazil operations translate its assets and liabilities into U.S. dollars at the current exchange rates in effect at the end of the fiscal period. The gains or losses that result from this process are shown as cumulative translation adjustments within accumulated other comprehensive loss in the Consolidated Balance Sheets. The revenue and expense accounts of foreign operations are translated into U.S. dollars at the average exchange rates during the period. Recently Adopted Accounting Pronouncements In May 2014, Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, “Revenue from Contracts with Customers (Topic 606),” which supersedes the revenue recognition requirements in “Revenue Recognition (Topic 605),” and requires entities to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company adopted this standard on January 1, 2018, using the modified retrospective method with no material impact on our revenue recognition model on an annual basis. See Note 18 . In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted cash.” The Company retrospectively adopted this ASU in the first quarter 2018 and modified the Company's cash flow presentation to include restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Historical restricted cash balances were related to cash withheld from the 2015 acquisition of CMT to fund the completion of certain expansion capital improvements, and the related immaterial impacts have been reclassified on the statement of cash flows for the years ended December 31, 2017 and 2016. The restricted cash balance was zero at both December 31, 2018 and December 31, 2017. In March 2017, the FASB issued ASU 2017-07, “Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The Company adopted this ASU in the first quarter 2018 and retrospectively presented net periodic postretirement benefit cost in the income statement separately from the service cost component and outside a subtotal of income from operations. In conjunction with the adoption of this standard, expense of $1.3 million was reclassified from operating income and was recorded in interest expense, net on the Consolidated Statements of Income for both the years ended December 31, 2017 and 2016, respectively. See Note 10 . In February 2018, the FASB issued ASU 2018-02, “Income Statement-Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” The Company adopted this ASU in the first quarter 2018 and reclassified $1.1 million of deferred tax adjustments to accumulated other comprehensive income (loss) from retained earnings on the December 31, 2017 balance sheet for the tax effects resulting from the Tax Cuts and Jobs Act of 2017. Recently Issued Pronouncements In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." ASU 2016-02 requires leases to be recognized as assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. Subsequently, the FASB has issued various ASUs to provide further clarification around certain aspects of ASC 842, "Leases". This standard is effective for annual and interim periods in fiscal years beginning after December 15, 2018, with early adoption permitted. A multi-disciplined implementation team has gained an understanding of the accounting and disclosure provisions of the standard and analyzed t he impacts to our business, including the development of new accounting processes to account for our leases and support the required disclosures. We have implemented a technology tool to assist with the accounting and reporting requirements of this standard. While we are still finalizing the impact of adopting this standard, we expect that upon adoption the right-of-use assets and lease liabilities, such as land, the lease of our corporate office space and certain equipment rentals, will increase the reported assets and liabilities on our Consolidated Balance Sheets by approximately $5 million to $10 million. The Company adopted this standard on January 1, 2019, by applying the modified retrospective transition approach and electing not to adjust prior comparative periods. Labor Concentrations As of December 31, 2018 , we have approximately 895 employees in the U.S. Approximately 40 percent of our domestic employees, principally at our cokemaking operations, are represented by the United Steelworkers union under various contracts. Additionally, approximately 3 percent of our domestic employees are represented by the International Union of Operating Engineers . While the labor agreement at our Indiana Harbor cokemaking facility expired on August 31, 2015 , the parties mutually agreed to extend the terms of this agreement through August 31, 2018. Currently both parties are working under the term of the contract extension while negotiating a new agreement. We do not anticipate any work stoppages during the extended period of the agreement. The labor agreements at KRT, Lake Terminal and Haverhill will expire on April 30, 2019, June 30, 2019 and November 1, 2019, respectively. We will negotiate the renewal of these agreements in 2019 and do not anticipate any work stoppages. As of December 31, 2018 , we have approximately 285 employees at the cokemaking facility in Vitória, Brazil, all of whom are represented by a union under a labor agreement. During 2018, the labor agreement at our Vitoria, Brazil facility was renewed for an additional year, and it expires on October 31, 2019 .

Acquisition of Noncontrolling I

Acquisition of Noncontrolling Interest	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
Acquisition of Noncontrolling Interest	3. Acquisition of Noncontrolling Interest In 2017, the Company's Board of Directors authorized a program for the Company to purchase outstanding Partnership common units at any time and from time to time in the open market, through privately negotiated transactions, block transactions, or otherwise for a total aggregate cost to the Company not to exceed $100.0 million . At December 31, 2018 , there was $47.1 million available under the authorized program. The following table summarizes the Company's purchases of outstanding Partnership common units in the open market: Years Ended December 31 2018 2017 (Dollars in millions) Units purchased 231,171 2,853,032 Cash paid $ 4.2 $ 48.7 Decrease in noncontrolling interest (1) $ 2.7 $ 29.6 Decrease in additional paid in capital (2) $ 1.2 $ 12.0 (1) Represents Partnership's net book value acquired by the Company. (2) Represents consideration paid in excess of the net book value of the noncontrolling interest acquired net of deferred tax adjustments of $0.3 million and $7.1 million for the years ended December 31, 2018 and 2017, respectively. The following table summarizes the effects of the changes in the Company's ownership interest in the Partnership on SunCoke's equity: Years Ended December 31, 2018 2017 (Dollars in millions) Net income attributable to SunCoke Energy, Inc $ 26.2 $ 122.4 Decrease in SunCoke Energy, Inc. equity for the purchase of additional interest in the Partnership (1.2 ) (12.0 ) Changes from net income attributable to SunCoke Energy, Inc and transfers to noncontrolling interest $ 25.0 $ 110.4

Customer Concentrations

Customer Concentrations	12 Months Ended
	Dec. 31, 2018
Risks and Uncertainties [Abstract]
Customer Concentrations	4. Customer Concentrations In 2018 , the Company sold approximately 4 million tons of coke under long-term, take-or-pay contracts to its three primary customers in the U.S.: AK Steel Corporation ("AK Steel"), ArcelorMittal USA LLC and/or its affiliates (“AM USA”) and United States Steel Corporation ("U.S. Steel"). In addition, licensing and operating fees are payable to the Company under long-term contracts with ArcelorMittal Brazil. The table below shows sales to the Company's significant customers: Years ended December 31, 2018 2017 2016 Sales and other operating revenue Percent of Company sales and other operating revenue Sales and other operating revenue Percent of Company sales and other operating revenue Sales and other operating revenue Percent of Company sales and other operating revenue (Dollars in millions) AM USA and ArcelorMittal Brazil (1) $ 735.8 50.7 % $ 678.2 50.9 % $ 596.6 48.8 % AK Steel (2) $ 377.9 26.0 % $ 331.3 24.9 % $ 350.0 28.6 % U.S. Steel (3) $ 206.8 14.3 % $ 214.1 16.1 % $ 185.3 15.1 % (1) Represents revenues included in our Domestic Coke and Brazil Coke segments. (2) Represents revenues included in our Domestic Coke segment. (3) Represents revenues included in our Domestic Coke and Logistics segments. The Company generally does not require any collateral with respect to its receivables. At both December 31, 2018 and 2017, the Company’s receivables balances were primarily due from AM USA and ArcelorMittal Brazil, AK Steel and U.S. Steel. As a result, the Company experiences concentrations of credit risk in its receivables with these three customers. These concentrations of credit risk may be affected by changes in economic or other conditions affecting the steel industry. The table below shows receivables due from the Company's significant customers: December 31, 2018 2017 (Dollars in millions) AM USA and ArcelorMittal Brazil $ 34.3 $ 25.7 AK Steel $ 25.3 $ 13.2 U.S. Steel $ 5.2 $ 5.6 Our logistics business provides coal handling and storage services to Murray Energy Corporation, Inc. ("Murray") and Foresight Energy LLC ("Foresight"), who are the two primary customers in the Logistics segment. The table below shows sales to Murray and Foresight: Years ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue $ 62.5 $ 57.8 $ 53.5 Percent of Company sales and other operating revenue 4.3 % 4.3 % 4.4 % Percent of Logistics segment sales and other operating revenue, including intersegment sales 49.3 % 49.4 % 49.6 % The table below shows receivables due from Murray and Foresight: December 31, 2018 2017 (Dollars in millions) Murray and Foresight $ 3.2 $ 9.7

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes The components of income before income tax (benefit) expense and loss from equity method investment are as follows: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Domestic $ 39.3 $ 4.3 $ 52.5 Foreign 17.7 17.6 15.6 Total $ 57.0 $ 21.9 $ 68.1 Income tax expense (benefit) consisted of the following: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Current tax expense: U.S. federal $ 1.4 $ 1.7 $ 2.7 State 2.1 (1.0 ) (2.2 ) Foreign 4.5 4.9 5.0 Total current tax expense 8.0 5.6 5.5 Deferred tax expense: U.S. federal (3.1 ) (99.7 ) (1.5 ) State (0.3 ) 12.5 4.6 Total deferred tax (benefit) expense (3.4 ) (87.2 ) 3.1 Total $ 4.6 $ (81.6 ) $ 8.6 The reconciliation of income tax expense at the U.S. statutory rate to income tax expense (benefit) is as follows: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Income tax expense at U.S. statutory rate $ 12.0 21.0 % $ 7.7 35.0 % $ 23.8 35.0 % Increase (reduction) in income taxes resulting from: Impact of Final Regulations (1) (1.4 ) (2.5 )% 64.2 293.2 % — — % Impact of Tax Legislation (2) (4.8 ) (8.4 )% (154.7 ) (706.4 )% — — % Income attributable to noncontrolling interests in partnerships (3) (3.9 ) (6.8 )% (5.4 ) (24.7 )% (15.6 ) (23.0 )% State and other income taxes, net of federal income tax effects 1.6 2.8 % 2.0 9.1 % 1.1 1.7 % Change in valuation allowance (4) 0.7 1.2 % 3.9 17.8 % 0.4 0.6 % Other 0.4 0.7 % 0.7 3.2 % (1.1 ) (1.6 )% Income tax (benefit) expense at effective tax rate $ 4.6 8.0 % $ (81.6 ) (372.8 )% $ 8.6 12.7 % (1) In January 2017, the Internal Revenue Service ("IRS") announced its decision to exclude cokemaking as a qualifying income generating activity in its final regulations (the "Final Regulations") issued under section 7704(d)(1)(E) of the Internal Revenue Code relating to the qualifying income exception for publicly traded partnerships. Subsequent to the 10-year transition period, certain cokemaking entities in the Partnership will become taxable as corporations. As a result, the Partnership recorded deferred income tax expense of $148.6 million to set up its initial deferred income tax liability during 2017, primarily related to differences in the book and tax basis of fixed assets, which are expected to exist at the end of the 10-year transition period when the cokemaking operations become taxable. However, the Company had previously recorded $84.4 million of the deferred income tax liability in its financial statements related to the Company's share of the deferred tax liability for the book and tax differences in its investment in the Partnership. As such, the Company's 2017 financial statements reflect the $64.2 million incremental impact from the Final Regulations solely attributable to the Partnership’s public unitholders, which was also recorded as an equal reduction to noncontrolling interest. In 2018, the Partnership recorded a deferred tax benefit of $3.6 million related to its changes in projected deferred tax liability associated with projected book and tax differences at the end of the 10-year transition period due to current period additions and changes in estimated useful lives of certain assets. The Company's 2018 financial statements reflect a $1.4 million benefit, which is solely attributable to the Partnership’s public unitholders and was also recorded as an equal reduction to noncontrolling interest. As a result, the Final Regulations have no impact to net income attributable to the Company. (2) On December 22, 2017, the Tax Legislation was enacted. The Tax Legislation significantly revised the U.S. corporate income tax structure, including lowering corporate income tax rates. In addition, the SEC staff released Staff Accounting Bulletin 118 on December 23, 2017, which provided for companies to record a provisional impact of the Tax Legislation during a measurement period, not to exceed one year, in situations where companies do not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under ASC 740, "Income Taxes", for certain income tax effects of the Tax Legislation for the reporting period which includes enactment. During 2017, SunCoke recorded a provisional net income tax benefit of $154.7 million , of which $125.0 million was attributable to the Company, for the impact of this Tax Legislation. These benefits were primarily due to the $169.0 million net benefit resulting from the remeasurement of U.S. deferred income tax liabilities and assets at the lower enacted corporate tax rates. During 2017, based on information available at the time, the Company recorded provisional income tax expense of $14.3 million for a valuation allowance against $19.0 million of foreign tax credit carryforwards that the Company believed would not be realized prior to their expiration as a result of the Tax Legislation. Based on an updated analysis of the foreign tax credit rules relating to the new Tax Legislation, the Company revised its estimate of the realizability of its foreign tax credits, resulting in a net $4.8 million benefit during the third quarter of 2018. There were no other significant changes to previous estimates and amounts recorded in 2017 relating to this Tax Legislation. (3) Excludes the impact of the Final Regulations on qualifying income discussed above. No income tax expense is reflected in the Consolidated Statements of Income for income attributable to noncontrolling interests in partnership entities. (4) In 2017, the Company recorded a valuation allowance as a result of changes in future state allocation assumptions. The tax effects of temporary differences that comprise the net deferred income tax liability from operations are as follows: December 31, 2018 2017 (Dollars in millions) Deferred tax assets: Retirement benefit liabilities $ 6.4 $ 7.1 Black lung benefit liabilities 11.3 11.6 Share-based compensation 6.4 6.1 Federal tax credit carryforward (1) 21.5 23.2 Foreign tax credit carryforward (2) 15.9 19.0 Federal net operating loss — 2.5 Section 163(j) interest limitation carryforward (3) 1.8 — State tax credit carryforward, net of federal income tax effects (4) 2.4 4.0 State net operating loss carryforward, net of federal income tax effects (5) 13.5 13.9 Other liabilities not yet deductible 4.9 4.3 Total deferred tax assets 84.1 91.7 Less valuation allowance (6) (20.7 ) (26.2 ) Deferred tax asset, net 63.4 65.5 Deferred tax liabilities: Properties, plants and equipment (111.5 ) (114.9 ) Investment in partnerships (206.6 ) (208.4 ) Total deferred tax liabilities (318.1 ) (323.3 ) Net deferred tax liability $ (254.7 ) $ (257.8 ) (1) Federal tax credit carryforward expires in 2032 through 2034. (2) Foreign tax credit carryforward expires in 2023 through 2028. (3) The Tax Legislation generally limits the deductibility of business interest expense to 30 percent of adjusted taxable income. This limitation resulted in a deferred tax asset as it is eligible for deduction in future taxable years and has no expiration. (4) State tax credit carryforward, net of federal income tax effects expires in 2019 through 2023. (5) State net operating loss carryforward, net of federal income tax effects expires in 2023 through 2038. (6) Primarily related to state tax credit and net operating loss carryforwards and the $9.9 million allowance against the foreign tax credit carryforward. The Company's consolidated federal income tax returns have been examined by the IRS for all years through the year ended December 31, 2014. SunCoke is currently open to examination by the IRS for tax years ended December 31, 2015 and forward. State and foreign income tax returns are generally subject to examination for a period of three to five years after the filing of the respective returns. The state impact of any amended federal returns remains subject to examination by various states for a period of up to one year after formal notification of such amendments to the states. There were no uncertain tax positions at December 31, 2018 and 2017, and there were no associated interest or penalties recognized for the years ended December 31, 2018, 2017 or 2016. The Company does not expect that any unrecognized tax benefits pertaining to income tax matters will be required in the next twelve months.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventories	6. Inventories The Company’s inventory consists of metallurgical coal, which is the principal raw material for the Company’s cokemaking operations, coke, which is the finished good sold by the Company to its customers, and materials, supplies and other. These components of inventories were as follows: December 31, 2018 2017 (Dollars in millions) Coal $ 59.9 $ 61.4 Coke 8.6 12.3 Materials, supplies and other 41.9 37.3 Total inventories $ 110.4 $ 111.0

Properties, Plants, and Equipme

Properties, Plants, and Equipment, Net	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Properties, Plants, and Equipment, Net	7. Properties, Plants, and Equipment, Net The components of net properties, plants and equipment were as follows: December 31, 2018 2017 (Dollars in millions) Coke and energy plant, machinery and equipment (1) $ 1,876.3 $ 1,812.0 Logistics plant, machinery and equipment 218.3 216.2 Land and land improvements 119.7 118.7 Construction-in-progress 72.7 51.9 Other 39.9 35.7 Gross investment, at cost 2,326.9 2,234.5 Less: accumulated depreciation (1) (855.8 ) (733.2 ) Total properties, plants and equipment, net $ 1,471.1 $ 1,501.3 (1) Includes assets, consisting mainly of coke and energy plant, machinery and equipment, with a gross investment totaling $1,416.2 million and $1,337.3 million and accumulated depreciation of $554.1 million and $475.8 million at December 31, 2018 and December 31, 2017 , respectively, which are subject to long-term contracts to sell coke and are deemed to contain operating leases. Upon adoption of ASC 842, "Leases", in 2019, these contracts will no longer be deemed to contain operating leases.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	8. Goodwill and Other Intangible Assets Goodwill allocated to SunCoke's reportable segments is shown below. There were no changes in the carrying amount of goodwill during the years ended December 31, 2018 and 2017. December 31, 2018 and 2017 (Dollars in millions) Domestic Coke $ 3.4 Logistics 73.5 Total $ 76.9 The Company performed its annual goodwill impairment test as of October 1, 2018, with no indication of impairment. The fair value of the Logistics reporting unit, which was determined based on a discounted cash flow analysis, exceeded the carrying value of the reporting unit by approximately 30 percent . A significant portion of our logistics business holds long-term, take-or-pay contracts with Murray and Foresight. Key assumptions in our goodwill impairment test include continued customer performance against long-term, take-or-pay contracts, renewal of future long-term, take-or-pay contracts, incremental merchant business and a 14 percent discount rate representing the estimated weighted average cost of capital for this business line. The use of different assumptions, estimates or judgments, such as the estimated future cash flows of Logistics and the discount rate used to discount such cash flows, could significantly impact the estimated fair value of a reporting unit, and therefore, impact the excess fair value above carrying value of the reporting unit. A 100 basis point change in the discount rate would not have reduced the fair value of the reporting unit below its carrying value. The following table summarizes the components of gross and net intangible asset balances: December 31, 2018 December 31, 2017 Weighted - Average Remaining Amortization Years Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net (Dollars in millions) Customer contracts 4 $ 31.7 $ 17.7 $ 14.0 $ 31.7 $ 13.8 $ 17.9 Customer relationships 13 28.7 7.5 21.2 28.7 5.7 23.0 Permits 24 139.0 17.4 121.6 139.0 12.2 126.8 Trade name — 1.2 1.2 — 1.2 1.0 0.2 Total $ 200.6 $ 43.8 $ 156.8 $ 200.6 $ 32.7 $ 167.9 The permits above represent the environmental and operational permits required to operate a coal export terminal in accordance with the U.S. Environmental Protection Agency ("EPA") and other regulatory bodies. Intangible assets are amortized over their useful lives in a manner that reflects the pattern in which the economic benefit of the asset is consumed. The permits’ useful lives were estimated to be 27 years at acquisition based on the expected useful life of the significant operating equipment at the facility. We have historical experience of renewing and extending similar arrangements at our other facilities and intend to continue to renew our permits as they come up for renewal for the foreseeable future. The permits were renewed regularly prior to our acquisition of CMT. These permits have an average remaining renewal term of approximately 2.4 years. Total amortization expense for intangible assets subject to amortization was $11.1 million , $11.1 million and $11.2 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Based on the carrying value of finite-lived intangible assets as of December 31, 2018 , we estimate amortization expense for each of the next five years as follows: (Dollars in millions) 2019 $ 10.9 2020 10.7 2021 10.3 2022 10.3 2023 7.0 Thereafter 107.6 Total $ 156.8

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2018
Asset Retirement Obligation [Abstract]
Asset Retirement Obligations	9. Asset Retirement Obligations The Company has asset retirement obligations, primarily in the Domestic Coke segment, related to certain contractual obligations, mostly related to costs associated with restoring land to its original state, and may require the retirement and removal of long-lived assets from certain cokemaking properties as well as other reclamation obligations related to our former coal mining business. The Federal Surface Mining Control and Reclamation Act of 1977 and similar state statutes require that mine property be restored in accordance with specified standards and an approved reclamation plan. We do not have any unrecorded asset retirement obligations. The following table provides a reconciliation of changes in the asset retirement obligation from operations during each period: (Dollars in millions) Balance at December 31, 2016 $ 13.9 Liabilities settled (0.7 ) Accretion expense (1) 1.0 Revisions in estimated cash flows (0.2 ) Balance at December 31, 2017 $ 14.0 Liabilities settled (0.4 ) Accretion expense (1) 0.9 Revisions in estimated cash flows $ 0.1 Balance at December 31, 2018 $ 14.6 (1) Included in cost of products sold and operating expenses on the Consolidated Statements of Income.

Retirement Benefits Plans

Retirement Benefits Plans	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Retirement Benefits Plans	10. Retirement Benefits Plans Postretirement Health Care and Life Insurance Plans The Company has plans which provide health care and life insurance benefits for many of its retirees (“postretirement benefit plans”). The postretirement benefit plans are unfunded and the costs are borne by the Company. Effective January 1, 2011 , postretirement medical benefits for future retirees were phased out or eliminated for non-mining employees with less than ten years of service. Postretirement benefit plans expense consisted of the following components: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Interest cost on benefit obligations $ 1.0 $ 1.1 $ 1.3 Amortization of: Actuarial losses 0.6 0.9 0.7 Prior service benefit (0.7 ) (0.7 ) (0.7 ) Total expense $ 0.9 $ 1.3 $ 1.3 Postretirement benefit plans expense is determined using actuarial assumptions as of the beginning of the year or using weighted-average assumptions when curtailments, settlements and/or other events require a plan remeasurement. The following assumptions were used to determine postretirement benefit plans expense: December 31, 2018 2017 2016 Discount Rate 3.35 % 3.65 % 3.80 % The following amounts were recognized as components of other comprehensive income (loss) before related tax impacts: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Reclassifications to earnings of: Actuarial loss amortization $ 0.6 $ 0.9 $ 0.7 Prior service benefit amortization (0.7 ) (0.7 ) (0.7 ) Retirement benefit plan funded status adjustments: Actuarial gains (losses) 0.8 (1.1 ) (1.8 ) Prior service benefit (1) — — 1.5 $ 0.7 $ (0.9 ) $ (0.3 ) (1) Effective January 1, 2017, a plan change occurred resulting in Medicare-eligible disabled participants transitioning from a Company-sponsored group medical plan to a federal health care exchange plan. The Company provides a subsidy to these participants each year. The plan change resulted in a decrease in the benefit obligation of $1.5 million during 2016. The following table sets forth the components of the changes in benefit obligations: Years Ended December 31, 2018 2017 (Dollars in millions) Benefit obligation at beginning of year $ 31.3 $ 32.3 Interest cost 1.0 1.1 Actuarial (gain)/loss (0.8 ) 1.1 Benefits paid (3.3 ) (3.2 ) Benefit obligation at end of year (1) $ 28.2 $ 31.3 (1) Represents retirement benefit liabilities, including current portion, on the Consolidated Balance Sheets. The current portion of retirement liabilities, which totaled $3.0 million and $3.1 million at December 31, 2018 and 2017 , respectively, is classified in accrued liabilities on the Consolidated Balance Sheets. The following table sets forth the cumulative amounts not yet recognized in net income: Years Ended December 31, 2018 2017 (Dollars in millions) Cumulative amounts not yet recognized in net income: Actuarial losses $ 10.4 $ 11.8 Prior service benefits (2.6 ) (3.4 ) Accumulated other comprehensive loss (before related tax benefit) $ 7.8 $ 8.4 The expected benefit payments through 2028 for the postretirement benefit plan are as follows: Year ending December 31: (Dollars in millions) 2019 $ 3.0 2020 2.9 2021 2.8 2022 2.6 2023 2.4 2024 through 2028 9.5 The measurement date for the Company’s postretirement benefit plans is December 31. The following discount rates were used to determine the benefit obligation: December 31, 2018 2017 Discount rate 4.00 % 3.35 % The health care cost trend assumption used at both December 31, 2018 , and 2017 to compute the accumulated postretirement benefit obligation for the postretirement benefit plans was 6.50 percent , which is assumed to decline gradually to 5.00 percent in 2028 and to remain at that level thereafter. Defined Contribution Plans The Company has defined contribution plans which provide retirement benefits for certain of its employees. The Company’s contributions, which are principally based on the Company’s pretax income and the aggregate compensation levels of participating employees and are charged against income as incurred, amounted to $6.5 million , $6.4 million and $5.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Accrued Liabilities

Accrued Liabilities	12 Months Ended
	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Accrued Liabilities	11. Accrued Liabilities Accrued liabilities consist of following: December 31, 2018 2017 (Dollars in millions) Accrued benefits $ 21.2 $ 21.3 Current portion of postretirement benefit obligation 3.0 3.1 Other taxes payable 9.1 10.5 Current portion of black lung liability 4.5 5.4 Accrued legal 4.2 5.6 Other 3.6 7.3 Total accrued liabilities $ 45.6 $ 53.2

Debt and Financing Obligation

Debt and Financing Obligation	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt and Financing Obligation	12. Debt and Financing Obligation Total debt and financing obligation consisted of the following: December 31, 2018 2017 (Dollars in millions) 7.500 percent senior notes, due 2025 ("Partnership Notes") $ 700.0 $ 700.0 7.625 percent senior notes, due 2019 ("2019 Notes") — 44.6 Term loan, due 2022 ("Term Loan") 43.9 — SunCoke's revolving credit facility, due 2022 ("Revolving Facility") — — Partnership's revolving credit facility, due 2022 ("Partnership Revolver") 105.0 130.0 5.82 percent financing obligation, due 2021 ("Partnership Financing Obligation") 10.1 12.7 Total borrowings $ 859.0 $ 887.3 Original issue discount (5.4 ) (5.9 ) Debt issuance costs (15.2 ) (17.7 ) Total debt and financing obligation $ 838.4 $ 863.7 Less: current portion of long-term debt and financing obligation 3.9 2.6 Total long-term debt and financing obligation $ 834.5 $ 861.1 Redemption of 2019 Notes On January 11, 2018, the Company redeemed all of its outstanding 2019 Notes for $46.1 million, which included accrued and unpaid interest of $1.5 million. As a result of the debt extinguishment, the Company recorded a loss on extinguishment of debt on the Consolidated Statements of Income of $0.3 million, representing a write-off of unamortized debt issuance costs. The Company funded the redemption with a Term Loan in aggregate principal amount of $45.0 million, resulting in additional debt issuance costs of $0.3 million. The Term Loan will mature on May 24, 2022. Borrowings under the Term Loan will bear interest, at the Company’s option, at either (i) a base rate plus an applicable margin or (ii) LIBOR plus an applicable margin. The applicable margin is based on the Company's consolidated leverage ratio, as defined in the credit agreement . Partnership Notes The Partnership Notes are the senior unsecured obligations of the Partnership, and are guaranteed on a senior unsecured basis by each of the Partnership’s existing and certain future subsidiaries. Interest on the Partnership Notes is payable semi-annually in cash in arrears on June 15 and December 15 of each year. The Partnership may redeem some or all of the Partnership Notes at any time on or after June 15, 2020 at specified redemption prices plus accrued and unpaid interest, if any, to the redemption date. Before June 15, 2020, and following certain equity offerings, the Partnership also may redeem up to 35 percent of the Partnership Notes at a price equal to 107.5 percent of the principal amount, plus accrued and unpaid interest, if any, to the redemption date. In addition, at any time prior to June 15, 2020, the Partnership may redeem some or all of the Partnership Notes at a price equal to 100 percent of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, plus a “make-whole” premium. The Partnership is obligated to offer to purchase all or a portion of the Partnership Notes at a price of (a) 101 percent of their principal amount, together with accrued and unpaid interest, if any, to the date of purchase, upon the occurrence of certain change of control events and (b) 100 percent of their principal amount, together with accrued and unpaid interest, if any, to the date of purchase, upon the occurrence of certain asset dispositions. These restrictions and prohibitions are subject to certain qualifications and exceptions set forth in the Indenture, including without limitation, reinvestment rights with respect to the proceeds of asset dispositions. The Partnership Notes contain covenants that, among other things, limit the Partnership’s ability and the ability of certain of the Partnership’s subsidiaries to (i) incur indebtedness, (ii) pay dividends or make other distributions, (ii) prepay, redeem or repurchase certain subordinated debt, (iv) make loans and investments, (v) sell assets, (vi) incur liens, (vii) enter into transactions with affiliates, (viii) enter into agreements restricting the ability of subsidiaries to pay dividends and (ix) consolidate or merge. Partnership Financing Obligation The Partnership's sale-leaseback arrangement of certain coke and logistics equipment has an initial lease period of 60 months and an early buyout option after 48 months to purchase the equipment at 34.5 percent of the original lease equipment cost. The arrangement is accounted for as a financing transaction, resulting in a financing obligation on the Consolidated Balance Sheets. The financing obligation is guaranteed by the Partnership. Revolving Facility The proceeds of any borrowings made under the Revolving Facility can be used to finance working capital needs, acquisitions, capital expenditures and for other general corporate purposes. The obligations under the credit agreement are guaranteed by certain of the Company’s subsidiaries and secured by liens on substantially all of the Company’s and the guarantors’ assets pursuant to a guarantee and collateral agreement. The capacity of the Revolving facility is $100.0 million . As of December 31, 2018 , the Revolving Facility had letters of credit outstanding of $23.9 million and no outstanding balance, leaving $76.1 million available. Commitment fees are based on the unused portion of the Revolving Facility at a rate of 0.4 percent . Borrowings under the Revolving Facility bear interest, at SunCoke Energy’s option, at either (i) a base rate plus an applicable margin or (ii) LIBOR plus 175 basis points. The spread is subject to change based on the Company's consolidated leverage ratio, as defined in the credit agreement. The weighted-average interest rate for borrowings outstanding under the Credit Agreement was 2.8 percent during 2016. There were no borrowings during 2018 or 2017. Partnership Revolver The proceeds of any borrowings made under the Partnership Revolver can be used to finance working capital needs, acquisitions, capital expenditures and for other general corporate purposes. The Partnership Revolver provides total aggregate commitments from lenders of $285.0 million and up to $200.0 million uncommitted incremental revolving capacity. The obligations under the Partnership Revolver are guaranteed by the Partnership’s subsidiaries and secured by liens on substantially all of the Partnership’s and the guarantors’ assets. As of December 31, 2018 , the Partnership had $1.9 million of letters of credit outstanding and an outstanding balance of $105.0 million , leaving $178.1 million available. Commitment fees are based on the unused portion of the Partnership Revolver at a rate of 0.4 percent . Borrowings under the Partnership Revolver bear interest at either (i) a variable rate of LIBOR plus 250 basis points or (ii) an alternative base rate plus 150 basis points. The spread is subject to change based on the Partnership's consolidated leverage ratio, as defined in the credit agreement. The weighted-average interest rate for borrowings under the Partnership Revolver was 4.8 percent , 3.8 percent and 3.3 percent during 2018, 2017 and 2016, respectively. Covenants Under the terms of the Revolving Facility, the Company is subject to a maximum consolidated leverage ratio of 3.25 : 1.00 and a minimum consolidated interest coverage ratio of 2.75 : 1.00 . Under the terms of the Partnership's credit agreement, the Partnership is subject to a maximum consolidated leverage ratio of 4.5 : 1.0 prior to June 30, 2020 and 4.0 : 1.0 after June 30, 2020 and a minimum consolidated interest coverage ratio of 2.5 : 1.0 . The Company and Partnership's credit agreement contains 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 and Partnership Revolver could be declared immediately due and payable. The Company and the Partnership have a cross default provision that applies to our indebtedness having a principal amount in excess of $35 million . As of December 31, 2018, the Company and the Partnership were in compliance with all debt covenants. We do not anticipate violation of these covenants nor do we anticipate that any of these covenants will restrict our operations or our ability to obtain additional financing. Maturities As of December 31, 2018 , the combined aggregate amount of maturities for long-term borrowings for each of the next five years is as follows: (Dollars in millions) 2019 $ 3.9 2020 (1) 10.7 2021 3.4 2022 141.0 2023 — 2024-Thereafter 700.0 Total $ 859.0 (1) Assumes the Partnership Financing Obligation early buyout option is exercised in 2020.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	13. Commitments and Contingent Liabilities Lease obligations The Company, as lessee, has noncancelable operating leases for land, office space, equipment and railcars. The aggregate amount of future minimum annual rental payments applicable to noncancelable operating leases is as follows: Minimum (Dollars in millions) Year ending December 31: 2019 $ 2.0 2020 1.1 2021 1.0 2022 0.5 2023 0.1 2024-Thereafter 0.7 Total $ 5.4 Total rental expense for all operating leases was $9.8 million , $7.3 million and $8.7 million in 2018 , 2017 and 2016 , respectively. Legal Matters SunCoke Energy is party to an omnibus agreement, pursuant to which we have agreed to indemnify the Partnership for costs and expenses related to remediation of certain identified environmental matters in existence prior to the Partnership's initial public offering on January 24, 2013 ("IPO") at the Partnership’s Haverhill and Middletown facilities and certain identified environmental matters at the Partnership's Granite City facility in existence prior to its dropdown in January of 2015 ("Granite City Dropdown"). However, under the terms of the omnibus agreement, SunCoke Energy is not obligated to indemnify the Partnership for any new environmental matters coming into existence after the IPO at the Partnership’s Haverhill and Middletown facilities, or any new environmental matters coming into existence after the Granite City Dropdown at the Partnership's Granite City facility. The EPA issued Notices of Violations (“NOVs”) for our Haverhill and Granite City cokemaking facilities which stemmed from alleged violations of our air emission operating permits for these facilities. We are working in a cooperative manner with the EPA, the Ohio Environmental Protection Agency and the Illinois Environmental Protection Agency to address the allegations, and have entered into a consent decree in federal district court with these parties. The consent decree includes a $2.2 million civil penalty payment, which was paid in December 2014 , as well as capital projects underway to improve the reliability of the energy recovery systems and enhance environmental performance at the Haverhill and Granite City facilities. In the third quarter of 2018, the Court entered an amendment to the consent decree which provides the Haverhill and Granite City facilities with additional time to perform necessary maintenance on the flue gas desulfurization systems without exceeding consent decree limits. The emissions associated with this maintenance will be mitigated in accordance with the amendment, and there are no civil penalty payments associated with this amendment. The project at Granite City was due to be completed in February 2019, but the Company now expects to complete the project in July 2019 and is in discussions with the government entities regarding, among other things, the timing thereof. We anticipate spending approximately $150 million related to these projects, of which we have spent approximately $138 million to date, including $7 million spent by the Company prior to the formation of the Partnership. The remaining capital is expected to be spent through the first half of 2019. A portion of the proceeds from the Partnership's initial public offering and subsequent dropdowns were used to fund $119 million of these environmental remediation projects. Pursuant to the omnibus agreement, the Company made capital contributions to the Partnership of $20 million during 2018 for these known environmental remediation projects. The Company expects to make additional capital contributions to the Partnership of approximately $5 million in the first half of 2019 for the estimated future spending related to these environmental remediation projects. SunCoke Energy has also received NOVs, Findings of Violations ("FOVs"), and information requests from the EPA related to our Indiana Harbor cokemaking facility, which allege violations of certain air operating permit conditions for this facility. The Clean Air Act (the "CAA") provides the EPA with the authority to issue, among other actions, an order to enforce a State Implementation Plan ("SIP") 30 days after an NOV. The CAA also authorizes EPA enforcement of other non-SIP requirements immediately after an FOV. Generally, an NOV applies to SIPs and requires the EPA to wait 30 days, while an FOV applies to all other provisions (such as federal regulations) of the CAA, and has no waiting period. The NOVs and/or FOVs were received in 2010, 2012, 2013, 2015 and 2016. After discussions with the EPA and the Indiana Department of Environmental Management (“IDEM”) in 2010, resolution of the NOVs/FOVs was postponed by mutual agreement because of ongoing discussions regarding the NOVs at Haverhill and Granite City. In January 2012, the Company began working in a cooperative manner to address the allegations with the EPA, the IDEM and Cokenergy, LLC., an independent power producer that owns and operates an energy facility, including heat recovery equipment and a flue gas desulfurization system, that processes hot flue gas from our Indiana Harbor facility to produce steam and electricity and to reduce the sulfur and particulate content of such flue gas. The EPA, IDEM, SunCoke Energy and Cokenergy, LLC met regularly since those discussions commenced to reach a settlement of the NOVs and FOVs. Capital projects were underway during this time to address items that would be included in conjunction with a settlement. A consent decree among the parties was entered by the federal district court during the fourth quarter of 2018. The settlement includes a $2.5 million civil penalty that was paid in the fourth quarter of 2018. Further, the settlement consists of capital projects already underway 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 and tax disputes, product liability, employment claims, personal injury claims, premises-liability claims, allegations of exposures to toxic substances 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 claims would not have a material adverse impact on our consolidated financial statements. Black Lung Benefit Liabilities 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 following table summarizes discount rates utilized, active claims, and the total black lung liabilities: December 31, 2018 2017 Discount rate (1) 4.0 % 3.3 % Active claims 345 351 Black lung liability (dollars in millions) (2) $ 49.4 $ 50.3 (1) The discount rate is determined based on a portfolio of high-quality corporate bonds with maturities that are consistent with the estimated duration of our black lung obligations. A decrease of 25 basis points in the discount rate would have increased black lung expense by $1.1 million in 2018. (2) The current portion of the black lung liability was $4.5 million and $5.4 million at December 31, 2018 and 2017 , respectively, and was included in accrued liabilities on the Consolidated Balance Sheets. The following table summarizes annual black lung payments and expense: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Payments $ 6.3 $ 7.4 $ 7.8 Expense $ 5.4 $ 7.5 $ 8.1

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Loss	14. Accumulated Other Comprehensive Loss The following tables set forth the changes in the balance of accumulated other comprehensive loss, net of tax, by component: Benefit Plans Currency Translation Adjustments Total (Dollars in millions) At December 31, 2016 $ (4.8 ) $ (14.2 ) $ (19.0 ) Other comprehensive loss before reclassifications — (0.5 ) (0.5 ) Amounts reclassified from accumulated other comprehensive loss 0.2 — 0.2 Retirement benefit plans funded status adjustment (0.8 ) — (0.8 ) Net current period other comprehensive loss (0.6 ) (0.5 ) (1.1 ) Cumulative effect from adoption of ASU 2018-02 (1) (1.1 ) — (1.1 ) At December 31, 2017 $ (6.5 ) $ (14.7 ) $ (21.2 ) Other comprehensive loss before reclassifications — (1.4 ) (1.4 ) Amounts reclassified from accumulated other comprehensive loss (0.1 ) — (0.1 ) Retirement benefit plans funded status adjustment 0.6 — 0.6 Recognition of accumulated currency translation loss upon sale of equity method investment (2) — 9.0 9.0 Net current period other comprehensive loss 0.5 7.6 8.1 At December 31, 2018 $ (6.0 ) $ (7.1 ) $ (13.1 ) (1) As a result of the Tax Legislation, the Company revalued its deferred tax asset for our postretirement benefit plan for the impact of lower income tax rates, the impact of which was reclassified from accumulated other comprehensive loss to retained earnings. (2) These accumulated currency translation losses were recognized into income as a result of the sale of our equity method investment in VISA SunCoke. The tax benefit associated with the Company's benefit plans as of December 31, 2018 and 2017 was $ 1.8 million and $1.9 million , respectively. The increase (decrease) on net income due to reclassification adjustments from accumulated other comprehensive income were as follows (1) : December 31, 2018 2017 2016 (Dollars in millions) Recognition of accumulated currency translation loss upon sale of equity method investment $ (9.0 ) $ — $ — Amortization of benefit plans to net income: (2) Actuarial loss $ (0.6 ) $ (0.9 ) $ (0.7 ) Prior service benefit 0.7 0.7 0.7 Total, net of tax (3) (8.9 ) (0.2 ) — (1) Amounts in parentheses indicate debits to net income. (2) These accumulated other comprehensive (income) loss components are included in the computation of postretirement benefit plan expense (benefit) and included in interest expense, net on the Consolidated Statements of Income. See Note 10 . (3) The related tax cost (benefit) was zero for all years presented.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
Share-Based Compensation	15. Share-Based Compensation Equity Classified Awards Effective July 13, 2011 , SunCoke Energy’s Board of Directors approved the SunCoke Energy, Inc. Long-Term Performance Enhancement Plan (“SunCoke LTPEP”). The SunCoke LTPEP provides for the grant of equity-based awards including stock options and share units, or restricted stock, to the Company’s directors, officers, and other employees, advisors, and consultants who are selected by the plan committee for participation in the SunCoke LTPEP. All awards vest immediately upon a change in control and a qualifying termination of employment as defined by the SunCoke LTPEP. The plan authorizes the issuance of (i) 1,600,000 shares of SunCoke Energy common stock issuable upon the adjustment of Sunoco equity awards in connection with the Separation and Distribution Agreement between Sunoco and SunCoke and (ii) up to 7,500,000 shares, which reflects the 6,000,000 shares initially authorized under the Plan and an additional 1,500,000 shares to be issued under the Plan pursuant to an amendment effective February 14, 2018, of SunCoke Energy common stock pursuant to new awards under the SunCoke LTPEP. The Company measures the cost of employee services in exchange for an award of equity instruments based on the grant-date fair value of the award. The performance metrics of equity awards are remeasured on a quarterly basis for updates to the probability of achievement. The market metrics of equity awards are not remeasured. The total cost is recognized over the requisite service period. Award forfeitures are accounted for as they occur. Stock Options The Company granted the following stock options during the years ended December 31, 2018 , 2017 and 2016 , with an exercise price equal to the closing price of our common stock on the date of grant: Weighted Average Per Share No. of Shares Exercise Price Weighted Average Grant Date Fair Value Traditional stock options: 2018 grant 78,447 $ 10.49 $ 5.38 2017 grant 157,196 $ 10.29 $ 5.32 2016 March grant 90,925 $ 6.03 $ 2.78 2016 February grant 95,001 $ 3.80 $ 1.71 Performance based options: 2017 grant 80,595 $ 9.85 $ 5.17 2016 March grant 90,925 $ 6.03 $ 2.42 2016 February grant 58,448 $ 3.80 $ 1.06 The stock options vest in three equal annual installments beginning one year from the date of grant. In order to become exercisable, the performance based options also require the closing price of the Company's common stock to reach or exceed $14.78 per share for the 2017 grants and $9.50 per share for the February and March 2016 grants for any 15 trading days during the three -year period beginning on the grant date. The February and March 2016 grants met the required stock price performance during 2016. The stock options expire ten years from the date of grant. The Company calculates the value of each employee stock option, estimated on the date of grant, using the Black-Scholes option pricing model with a Monte Carlo simulation for the performance based options. The weighted-average fair value of employee stock options granted during the years ended December 31, 2018 , 2017 and 2016 was based on using the following weighted-average assumptions: Years Ended December 31, 2018 2017 2016 Risk free interest rate 3 % 2 % 1 % Expected term 6 years 6 years 5 years Volatility 52 % 53 % 52 % Dividend yield — % — % — % The risk-free interest rate assumption is based on the U.S. Treasury yield curve at the date of grant for periods which approximate the expected life of the option. The expected term of the employee options represent the average contractual term adjusted by the average vesting period of each option tranche. We based our expected volatility on our historical volatility over our entire available trading history. The dividend yield assumption is based on the Company’s expectation of dividend payouts at the time of grant. The following table summarizes information with respect to common stock option awards outstanding as of December 31, 2018 and stock option activity during the fiscal year then ended: Number of Weighted Weighted Average Remaining Contractual Term (years) Aggregate Outstanding at December 31, 2017 3,146,115 $ 15.31 5.6 $ 2.8 Granted 78,447 $ 10.49 Exercised (127,107 ) $ 6.49 Forfeited (211,667 ) $ 17.07 Outstanding at December 31, 2018 2,885,788 $ 15.46 4.8 $ 2.1 Exercisable at December 31, 2018 2,546,059 $ 16.38 4.1 $ 0.4 Expected to vest at December 31, 2018 339,729 $ 8.59 8.2 $ 0.9 Intrinsic value for stock options is defined as the difference between the current market value of our common stock and the exercise price of the stock options. Total intrinsic value of stock options exercised during 2018 and 2017 was $0.8 million and $0.3 million , respectively. No stock options were exercised during 2016. Restricted Stock Units The Company granted the following restricted stock units ("RSUs") during the years ended December 31, 2018 and 2017 : Shares Weighted Average Grant-Date Fair Value Grant Date Fair Value (Dollars in millions) 2018 grants 32,128 10.49 $ 0.3 2017 grants 22,628 $ 9.85 $ 0.2 No RSUs were granted during 2016 . The RSUs vest in three annual installments beginning one year from the date of grant. The following table summarizes information with respect to RSUs outstanding as of December 31, 2018 and RSU activity during the fiscal year then ended: Number of Weighted Nonvested at December 31, 2017 106,397 $ 13.53 Granted 32,128 $ 10.49 Vested (87,131 ) $ 14.27 Forfeited (4,181 ) $ 8.37 Nonvested at December 31, 2018 47,213 $ 10.29 Total grant date fair value of RSUs vested was $1.2 million , $2.3 million and $3.7 million during 2018 , 2017 and 2016 , respectively. Performance Share Units The Company grants performance share units ("PSUs"), which represent the right to receive shares of the Company's common stock, contingent upon the attainment of Company performance and market goals and continued employment. The Company granted the following PSUs during the years ended December 31, 2018 and 2017: Shares Fair Value per Share Grant Date Fair Value (Dollars in millions) 2018 grant (1) 96,389 $ 11.36 $ 1.1 2017 grant (2) 385,758 $ 11.61 $ 4.5 (1) The service period for the 2018 PSUs ends on December 31, 2020 and the awards will vest during the first quarter of 2021. (2) The Company granted 237,610 PSUs in February 2017, for which the service period will end on December 31, 2019, and 148,148 PSUs in December 2017, for which the service period will end on December 31, 2020. These awards will vest during the first quarter of 2020 and 2021, respectively. The 2018 and 2017 PSU grants were both split 50 /50 between the Company's three -year cumulative Adjusted EBITDA performance measure and the Company's three -year average pre-tax return on capital ("ROIC") performance measure for its coke and logistics businesses and unallocated corporate expenses. The number of PSU's ultimately awarded will be determined by the Adjusted EBITDA and ROIC performance versus targets and the Company's three -year total shareholder return ("TSR") as compared to the TSR of the companies making up the Nasdaq Iron & Steel Index ("TSR Modifier"). The TSR Modifier can impact the payout between 50 percent and 150 percent of the Company's final performance measure results. The award may vest between zero and 250 percent of the original units granted. The fair value of the PSUs granted during 2018 and 2017 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. The Company granted the following PSUs during the year ended December 31, 2016 : ROIC Portion (1) TSR Portion (2) Total Shares Fair Value per Share Shares Fair Value per Share Grant Date Fair Value (Dollars in millions) 2016 March grant (3) 67,167 $ 10.51 201,500 $ 6.35 $ 2.0 2016 February grant 105,210 $ 5.66 105,210 $ 5.81 $ 1.2 (1) The number of PSUs that ultimately vest will be determined by the Company's three -year average pre-tax return on capital for the Company's coke and logistics businesses. Additionally, only applicable to the 2016 grants, if at any time during the vesting period the closing price of the Company's common stock equals or exceeds $9.00 per share for any 15 trading days, which was met during 2016, the pre-tax return on capital portion of the award, as adjusted, will be multiplied by two. (2) The number of PSUs that ultimately vest will be determined by the Company's three -year total shareholder return ("TSR") as compared to the TSR of the companies making up the S&P 600. (3) The final vesting value of the TSR portion of this award cannot exceed $4.9 million . Each portion of the award may vest between zero and 200 percent of the original units granted. The fair value of the PSUs granted are based on the closing price of our common stock on the date of grant as well as a Monte Carlo simulation for the portion of the award subject to a market condition. The service period for the 2016 grant ends on December 31, 2018 and the awards will vest during the first quarter of 2019. The following table summarizes information with respect to unearned PSUs outstanding as of December 31, 2018 and PSU activity during the fiscal year then ended: Number of Weighted Nonvested at December 31, 2017 782,781 $ 10.06 Granted 96,389 $ 11.36 Vested (1,710 ) $ 16.90 Forfeited (125,085 ) $ 17.59 Nonvested at December 31, 2018 752,375 $ 8.86 Liability Classified Awards Restricted Stock Units Settled in Cash During the years ended December 31, 2018 , 2017 and 2016 , the Company issued 108,522 , 98,364 and 198,668 restricted stock units to be settled in cash ("Cash RSUs"), respectively, 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 years ended December 31, 2018 , 2017 and 2016, was $10.71 , $9.82 and $3.82 , respectively, and was based on the closing price of our common stock on the day of grant. The Cash RSU liability at December 31, 2018 was adjusted based on the closing price of our common stock on December 31, 2018 of $8.55 per share. The cash RSU liability at December 31, 2018 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 change in control and a qualifying termination of employment as defined by the SunCoke LTCIP. The Company issued a grant date fair value award of $1.0 million , $0.7 million and $0.9 million during the years ended December 31, 2018 , 2017 and 2016 , respectively, for which the service periods end on December 31, 2021, 2020 and 2019, respectively, and the awards will vests during the first quarter of 2022, 2021 and 2020, respectively. The 2018 and 2017 awards are split 50 /50 between the Company's three cumulative Adjusted EBITDA performance and the Company's three -year average pre-tax return on capital performance measure for its coke and logistics businesses and unallocated corporate expense. The ultimate award value will be determined by the performance versus targets and the Company's three year TSR Modifier performance, but will be capped at 250 percent of the target award. The 2016 award value will be adjusted based upon the Company's three -year average pre-tax return on capital for the Company's coke and logistics businesses, and if at any time during the vesting period the closing price of the Company's common stock equals or exceeds $9.00 per share for any 15 trading days, which was met in 2016, the award, as adjusted, will be multiplied by two, but will be capped at 200 percent of the target award. The cash incentive award liability at December 31, 2018 was adjusted based on the Company's current performance related to the above awards. The cash incentive award liability at December 31, 2018 was not material. Summary of Share-Based Compensation Expense Below is a summary of the compensation expense, unrecognized compensation costs, the period for which the unrecognized compensation cost is expected to be recognized over and the estimated forfeiture rate for each award: Years ended December 31, 2018 2017 2016 2018 2017 2016 December 31, 2018 Compensation Expense (1) Net of tax Unrecognized Compensation Cost Recognition Period (Dollars in millions) (Dollars in millions) (Years) Equity Awards: Stock Options $ 0.5 $ 1.3 $ 2.1 $ 0.4 $ 0.8 $ 1.3 $ 0.5 1.6 RSUs 0.4 1.1 2.6 0.3 0.7 1.7 $ 0.3 1.7 PSUs 1.9 1.9 1.4 1.7 1.2 0.9 $ 2.6 1.9 Total equity awards $ 2.8 $ 4.3 $ 6.1 $ 2.4 $ 2.7 $ 3.9 Liability Awards: Cash RSUs $ 0.8 $ 1.0 $ 0.7 $ 0.6 $ 0.6 $ 0.5 $ 0.7 1.4 Cash incentive award 0.9 0.2 0.1 0.7 0.1 0.1 $ 0.9 1.8 Total liability awards $ 1.7 $ 1.2 $ 0.8 $ 1.3 $ 0.7 $ 0.6 (1) Compensation expense is recognized by the Company in selling, general and administrative expenses on the Consolidated Statements of Income. The Company issued $0.3 million , $0.5 million , and $0.4 million of share-based compensation to the Company's Board of Directors during the years ended December 31, 2018, 2017 and 2016, respectively.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	16. Earnings Per Share Basic earnings per share (“EPS”) has been computed by dividing net income (loss) available 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 earnings per share to those used to compute diluted EPS: Years Ended December 31, 2018 2017 2016 (Shares in millions) Weighted-average number of common shares outstanding-basic 64.7 64.3 64.2 Add: effect of dilutive share-based compensation awards 0.8 0.9 0.2 Weighted-average number of shares-diluted 65.5 65.2 64.4 The following table shows stock options, restricted stock units, and performance stock units that are excluded from the computation of diluted earnings per share as the shares would have been anti-dilutive: Years Ended December 31, 2018 2017 2016 (Shares in millions) Stock options 2.7 2.9 3.0 Restricted stock units — — 0.2 Performance stock units 0.1 0.1 0.2 Total 2.8 3.0 3.4

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	17. Fair Value Measurements 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 to sell 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 Cash Equivalents Certain assets and liabilities are measured at fair value on a recurring basis. The Company’s cash equivalents, which amounted to $3.2 million and $5.5 million at December 31, 2018 and 2017 , respectively, were measured at fair value based on quoted prices in active markets for identical assets. These inputs are classified as Level 1 within the valuation hierarchy. CMT Contingent Consideration In connection with the CMT acquisition, the Partnership entered into a contingent consideration arrangement that runs through 2022 and requires the Partnership to make future payments to The Cline Group based on future volume over a specified threshold, price and contract renewals. The fair value of the contingent consideration was estimated based on a probability-weighted analysis using significant inputs that are not observable in the market, or Level 3 inputs. Key assumptions included probability adjusted levels of handling services provided by CMT, anticipated price per ton on future sales and probability of contract renewal, including length of future contracts, volume commitment, and anticipated price per ton. The fair value of the contingent consideration was $5.0 million and $2.5 million at December 31, 2018 and 2017 , respectively, and was primarily included in other deferred credits and liabilities on the Consolidated Balance Sheets. During 2018, CMT achieved record volumes and the Partnership increased CMT’s throughput volume projections in future periods for certain customers due to favorable coal prices, which are expected to increase export volume through CMT. The combined impact of the strong 2018 volumes and improved volume projections resulted in an increase to the fair value of the Partnership's contingent consideration balance of $2.5 million, which was recorded as a charge to costs of products sold and operating expenses in the Consolidated Statements of Income during 2018. During 2017 and 2016, as a result of adverse mining conditions faced by one of our thermal coal customers, as well as fluctuating export coal pricing, the Partnership lowered CMT's throughput volume, which reduced the Partnership's contingent consideration liability balance by $1.7 million and $6.4 million , respectively. Additionally, during March 2016, as a part of commercial activities subsequent to the acquisition of CMT, the Partnership and The Cline Group signed an amended agreement, which modified the contingent consideration terms by increasing the volume threshold required for the Partnership to make payments to The Cline Group in exchange for future pricing modifications, resulting in a $3.7 million reduction to the contingent consideration liability. These decreases in fair value were recorded as reductions to costs of products sold and operating expenses on the Consolidated Statements of Income during 2017 and 2016. Certain Financial Assets and Liabilities not Measured at Fair Value At December 31, 2018 and 2017 , the fair value of the Company’s long-term debt was estimated to be $822.8 million and $919.7 million , respectively, compared to a carrying amount of $859.0 million and $887.3 million , respectively. These fair values were 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	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	18. Revenue from Contracts with Customers Cokemaking Substantially all our coke sales are made pursuant to long-term, take-or-pay 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 of our agreements require us to deliver minimum annual tonnage, which varies by contract, but covers at least 90 percent of each facility's nameplate capacity. The take-or-pay provisions also require our customers to purchase such volumes of coke or pay the contract price for any tonnage they elect not to take. These coke sales agreements have an average remaining term of approximately six years, and to date, our coke customers have satisfied their obligations under these agreements. Our coke sales prices include an operating cost component, a coal cost component and a return of capital component. Operating costs under two of our coke sales agreements are contractual, subject to an annual adjustment based on an inflation index. Under our other four coke sales agreements operating costs are passed through to the respective customers subject to an annually negotiated budget, in some cases subject to a cap annually adjusted for inflation, and generally we share any difference in costs from the budgeted amounts with our customers. Our coke sales agreements contain pass-through provisions for coal and coal procurement costs, subject to meeting contractual coal-to-coke yields. To the extent that the actual coal-to-coke yields are less than the contractual standard, we are responsible for the cost of the excess coal used in the cokemaking process. Conversely, to the extent our actual coal-to-coke yields are higher than the contractual standard, we realize gains. The reimbursement of pass-through operating and coal costs from these coke sales agreements are considered to be variable consideration components included in the cokemaking sales price. The return of capital component for each ton of coke sold to the customer is determined at the time the coke sales agreement is signed and is effective for the term of each sales agreement. This component of our coke sales prices is intended to provide an adequate return on invested capital and may differ based on investment levels and other considerations. The actual return on invested capital at any facility is also impacted by favorable or unfavorable performance on pass-through cost items. Revenues are recognized when performance obligations to our customers are satisfied in an amount that reflects the consideration that we expect to receive in exchange for the coke. Logistics In our logistics business, handling and/or mixing services are provided to steel, coke (including some of our domestic cokemaking facilities), electric utility, coal producing and other manufacturing based customers. Materials are transported in numerous ways, including rail, truck, barge or ship. We do not take possession of materials handled, but rather act as intermediaries between our customers and end users, deriving our revenues from services provided on a per ton basis. The handling and mixing services consist primarily of two performance obligations, unloading and loading of materials. Our logistics business has long-term, take-or-pay agreements requiring us to handle over 13 million tons annually. The take-or-pay provisions in these agreements require our customers to purchase such handling services or pay the contract price for services they elect not to take. Estimated take-or-pay revenue of approximately $305 million from all of our long-term logistics contracts is expected to be recognized over the next five years for unsatisfied or partially unsatisfied performance obligations as of December 31, 2018. To date, our customers have satisfied their obligations under these agreements. Included with these long-term, take-or-pay arrangements are our contracts with Murray and Foresight, which cover 10 million tons of CMT's annual transloading capacity of 15 million tons. Revenues are recognized when the customer receives the benefits of the services provided, in an amount that reflects the consideration that we will receive in exchange for those services. Billings to CMT customers for take-or-pay volume shortfalls based on pro-rata volume commitments under take-or-pay contracts that are in excess of billings earned for services provided are recorded as contract liabilities and characterized as deferred revenue on the Consolidated Balance Sheets. Deferred revenue is recognized at the earliest of i) when the performance obligation is satisfied; ii) when the performance obligation has expired, based on the terms of the contract; or iii) when the likelihood that the customer would exercise its right to the performance obligation becomes remote. The following table provides changes in the Company's deferred revenue: 2018 2017 (Dollars in millions) Beginning balance at December 31, 2017 and 2016, respectively $ 1.7 $ 2.5 Reclassification of the beginning contract liabilities to revenue, as a result of performance obligation satisfied (1.4 ) (2.1 ) Billings in excess of services performed, not recognized as revenue 2.7 1.3 Ending balance at December 31, 2018 and 2017, respectively $ 3.0 $ 1.7 Energy Our energy sales are made pursuant to either steam or energy supply and purchase agreements or is sold into the regional power market. 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. The energy provided under these arrangements result in transfer of control over time. Revenues are recognized over time as energy is delivered to our customers, in an amount based on the terms of each arrangement. Operating and Licensing Fees Operating and licensing fees are made pursuant to long-term contracts with ArcelorMittal Brazil, where we operate a Brazilian cokemaking facility. The licensing fees are based upon the level of production required by our customer as well as a fixed annual fee. Operating fees include the full pass-through of the operating costs of the Brazilian facility as well as a per ton fee based on the level of production required by our customer. Revenues are recognized over time as our customers receive and consume the benefits in an amount that corresponds directly with the value provided to the customer to date. Disaggregated Sales and Other Operating Revenue The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue: Cokemaking $ 1,250.5 $ 1,140.8 $ 1,038.2 Energy 49.7 53.2 54.3 Logistics 101.0 89.7 82.9 Operating and licensing fees 40.4 43.4 39.5 Other 9.3 4.4 8.4 Sales and other operating revenue $ 1,450.9 $ 1,331.5 $ 1,223.3 Disaggregated sales and other operating revenue by customer is discussed in Note 4 .

Business Segment Information

Business Segment Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Business Segment Information	19. 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 through a similar production process. 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 and liquidity reported to the chief operating decision maker for purposes of allocating resources to the segments and assessing their performance: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue: Domestic Coke $ 1,308.3 $ 1,195.0 $ 1,097.6 Brazil Coke 40.4 43.4 39.5 Logistics 102.2 93.1 84.7 Logistics intersegment sales 24.5 23.8 23.2 Corporate and Other (1) — — 1.5 Corporate and Other intersegment sales (1) — — 22.0 Elimination of intersegment sales (24.5 ) (23.8 ) (45.2 ) Total sales and other operating revenue $ 1,450.9 $ 1,331.5 $ 1,223.3 Adjusted EBITDA Domestic Coke $ 207.9 $ 188.9 $ 193.9 Brazil Coke 18.4 18.2 16.2 Logistics 72.6 70.8 63.9 Corporate and Other (2) (35.7 ) (43.2 ) (57.0 ) Total Adjusted EBITDA $ 263.2 $ 234.7 $ 217.0 Depreciation and amortization expense: Domestic Coke (3) $ 114.4 $ 102.6 $ 84.0 Brazil Coke 0.7 0.7 0.7 Logistics 25.1 24.4 24.8 Corporate and Other 1.4 0.5 4.7 Total depreciation and amortization expense $ 141.6 $ 128.2 $ 114.2 Capital expenditures: Domestic Coke $ 95.1 $ 68.8 $ 44.6 Logistics 5.2 4.4 17.4 Corporate and Other — 2.4 1.7 Total capital expenditures $ 100.3 $ 75.6 $ 63.7 (1) Corporate and Other revenues are related to our legacy coal mining business, which was disposed in April 2016. (2) Corporate and Other includes the activity from our legacy coal mining business, which incurred Adjusted EBITDA losses of $9.8 million , $10.5 million , and $15.0 million for the years ended December 31, 2018, 2017 and 2016, respectively. (3) We revised the estimated useful lives of certain assets in our Domestic Coke segment, primarily as a result of plans to replace major components of certain heat recovery steam generators with upgraded materials and design, resulting in additional depreciation of $9.2 million , or $0.14 per common share, during the year ended December 31, 2018. The following table sets forth the Company’s segment assets: December 31, 2018 2017 (Dollars in millions) Segment assets Domestic Coke $ 1,446.5 $ 1,439.7 Brazil Coke 15.1 10.9 Logistics 463.0 491.9 Corporate and Other 120.0 112.8 Segment assets, excluding income tax receivable 2,044.6 2,055.3 Tax assets 0.7 4.8 Total assets $ 2,045.3 $ 2,060.1 The Company evaluates the performance of its segments based on segment Adjusted EBITDA, which is defined as earnings before interest, (gain) loss on extinguishment of debt, taxes, depreciation and amortization (“EBITDA”), adjusted for impairments, coal rationalization costs, changes to our contingent consideration liability related to our acquisition of CMT , the expiration of certain acquired contractual obligations , and loss on disposal of our interest in VISA SunCoke. 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 of the operating performance and liquidity of the Company's net assets and its ability to incur and service debt, fund capital expenditures and make distributions. 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 and liquidity. EBITDA and Adjusted EBITDA are not measures calculated in accordance with GAAP, and they should not be considered a substitute for net income, operating cash flow or any other measure of financial performance presented in accordance with GAAP. Set forth below is additional discussion of the limitations of Adjusted EBITDA as an analytical tool. Limitations . Other companies may calculate Adjusted EBITDA differently than we do, limiting its usefulness as a comparative measure. Adjusted EBITDA also has limitations as an analytical tool and should not be considered in isolation or as a substitute for an analysis of our results as reported under GAAP. Some of these limitations include that Adjusted EBITDA: • does not reflect our cash expenditures, or future requirements, for capital expenditures or contractual commitments; • does not reflect items such as depreciation and amortization; • does not reflect changes in, or cash requirement for, working capital needs; • does not reflect our interest expense, or the cash requirements necessary to service interest on or principal payments of our debt; • does not reflect certain other non-cash income and expenses • excludes income taxes that may represent a reduction in available cash; and • includes net income attributable to noncontrolling interests Below are reconciliations of Adjusted EBITDA to net income and Adjusted EBITDA to net cash provided by operating activities, which are its most directly comparable financial measures calculated and presented in accordance with GAAP: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Net cash provided by operating activities $ 185.8 $ 148.5 $ 219.1 Subtract: Depreciation and amortization expense 141.6 128.2 114.2 Deferred income tax (benefit) expense (3.4 ) (87.2 ) 3.1 Loss (gain) on extinguishment of debt 0.3 20.4 (25.0 ) Loss on divestiture of business — — 14.7 Loss from equity method investment 5.4 — — Changes in working capital and other (5.1 ) (16.4 ) 52.6 Net income $ 47.0 $ 103.5 $ 59.5 Add: Depreciation and amortization expense 141.6 128.2 114.2 Interest expense, net (1) 61.4 60.6 53.5 Loss (gain) on extinguishment of debt 0.3 20.4 (25.0 ) Income tax expense (benefit) 4.6 (81.6 ) 8.6 Contingent consideration adjustments (2) 2.5 (1.7 ) (10.1 ) Transaction costs (3) 0.4 — — Expiration of land deposits and write-off of costs related to potential new cokemaking facility (4) — 5.3 1.9 Non-cash reversal of acquired contractual obligation (5) — — (0.7 ) Loss on divestiture of business — — 14.7 Coal rationalization costs (6) — — 0.4 Loss from equity method investment 5.4 — — Adjusted EBITDA $ 263.2 $ 234.7 $ 217.0 Subtract: Adjusted EBITDA attributable to noncontrolling interest (7) 82.0 86.4 86.6 Adjusted EBITDA attributable to SunCoke Energy, Inc. $ 181.2 $ 148.3 $ 130.4 (1) In conjunction with the adoption of ASU 2017-07, the non-service type expense associated with the postretirement benefit plans was excluded from operating income and recorded in interest expense, net on the Consolidated Statements of Income during the periods presented. Amounts in prior periods were immaterial, and therefore, were not reclassified in the reconciliation of Adjusted EBITDA to net income and net cash provided by operating activities. (2) Adjustments to the fair value of the contingent consideration in 2018, 2017 and 2016 were primarily the result of modifications to the volume forecast. See Note 17 . (3) Represents costs incurred in connection with the Simplification Transaction. (4) In 2014, we finalized the required permitting and engineering plan for a potential new cokemaking facility, however, the project was terminated. As a result, during 2017 and 2016, the Company wrote-off previously capitalized engineering costs and land deposits for a potential new cokemaking facility of $5.3 million and $1.9 million , respectively. These costs were included in selling, general and administrative expenses on the Consolidated Statements of Income. (5) In association with the acquisition of CMT, we assumed certain performance obligations under existing contracts and recorded liabilities related to such obligations. In 2016, the Partnership reversed the liability as we no longer had any obligations under the contracts. (6) Prior to the divestiture of our coal mining business, the Company incurred coal rationalization costs including employee severance, contract termination costs and other costs to idle mines during the execution of our coal rationalization plan. (7) Reflects noncontrolling interests in Indiana Harbor and the portion of the Partnership owned by public unitholders.

Selected Quarterly Data (unaudi

Selected Quarterly Data (unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Data (unaudited)	20. Selected Quarterly Data (unaudited) 2018 2017 First Second Third Fourth (1) First (2) Second (3) Third Fourth (1)(4) (Dollars in millions) Sales and other operating revenue $ 350.5 $ 367.0 $ 364.5 $ 368.9 $ 309.7 $ 323.2 $ 339.0 $ 359.6 Gross profit (5) $ 47.0 $ 52.3 $ 45.8 $ 39.7 $ 42.2 $ 32.9 $ 51.3 $ 56.8 Net income (loss) $ 13.0 $ 11.4 $ 17.1 $ 5.5 $ (57.7 ) $ (31.5 ) $ 18.8 $ 173.9 Less: Net income (loss) attributable to noncontrolling interests $ 4.3 $ 7.2 $ 5.6 $ 3.7 $ (58.7 ) $ (7.3 ) $ 7.2 $ 39.9 Net income (loss) attributable to SunCoke Energy, Inc. $ 8.7 $ 4.2 $ 11.5 $ 1.8 $ 1.0 $ (24.2 ) $ 11.6 $ 134.0 Earnings (loss) attributable to SunCoke Energy, Inc. per common share: Basic (6) $ 0.13 $ 0.06 $ 0.18 $ 0.03 $ 0.02 $ (0.38 ) $ 0.18 $ 2.08 Diluted (6) $ 0.13 $ 0.06 $ 0.18 $ 0.03 $ 0.02 $ (0.38 ) $ 0.18 $ 2.05 (1) The Partnership recognized deferred revenue from Logistics take-or-pay billings for minimum volume shortfalls of $16.4 million into revenue in the fourth quarter of 2017. As a result of the increase in tons handled throughout 2018, there were no shortfalls to be recognized during the fourth quarter. (2) The first quarter of 2017 reflects the net impact to the Company’s deferred tax expense of $64.2 million related to the IRS Final Regulations on qualifying income all of which was attributable to unitholders of the Partnership. See Note 5 . (3) During the second quarter of 2017, the Partnership incurred $20.2 million of losses in connection with debt refinancing. (4) During the fourth quarter of 2017, the Company recorded $154.7 million of tax benefits as a result of the new Tax Legislation, $125.0 million of which was attributable to the Company. See Note 5 . (5) Gross profit equals sales and other operating revenue less cost of products sold and operating expenses and depreciation and amortization. (6) Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

Supplemental Condensed Combinin

Supplemental Condensed Combining and Consolidating Financial Information	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Supplemental Condensed Combining and Consolidating Financial Information	21. Supplemental Condensed Combining and Consolidating Financial Information Certain 100 percent owned subsidiaries of the Company serve as guarantors of the obligations under the Credit Agreement (“Guarantor Subsidiaries”). These guarantees are full and unconditional (subject, in the case of the Guarantor Subsidiaries, to customary release provisions as described below) and joint and several. For purposes of the following information, SunCoke Energy is referred to as “Issuer.” The indenture dated July 26, 2011 among the Company, the guarantors party thereto and The Bank of New York Mellon Trust Company, N.A., governs subsidiaries designated as “Guarantor Subsidiaries.” All other consolidated subsidiaries of the Company are collectively referred to as “Non-Guarantor Subsidiaries.” The ability of the Partnership and Indiana Harbor to pay dividends and make loans to the Company is restricted under the partnership agreements of the Partnership and Indiana Harbor, respectively. The credit agreement governing the Partnership’s credit facility and the indenture governing the Partnership Notes contain customary provisions which would potentially restrict the Partnership’s ability to make distributions or loans to the Company under certain circumstances. For the year ended December 31, 2018, less than 25 percent of net assets were restricted. Additionally, certain coal mining entities are designated as unrestricted subsidiaries. As such, all the subsidiaries described above are presented as "Non-Guarantor Subsidiaries." The guarantee of a Guarantor Subsidiary will terminate upon: • a sale or other disposition of the Guarantor Subsidiary or of all or substantially all of its assets; • a sale of the majority of the Capital Stock of a Guarantor Subsidiary to a third-party, after which the Guarantor Subsidiary is no longer a "Restricted Subsidiary" in accordance with the indenture governing the Notes; • the liquidation or dissolution of a Guarantor Subsidiary so long as no "Default" or "Event of Default", as defined under the indenture governing the Notes, has occurred as a result thereof; • the requirements for defeasance or discharge of the indentures governing the Notes having been satisfied; or • the release, other than the discharge through payments by a Guarantor Subsidiary, from its guarantee under the Credit Agreement or other indebtedness that resulted in the obligation of the Guarantor Subsidiary under the indenture governing the Notes The following supplemental condensed combining and consolidating financial information reflects the Issuer’s separate accounts, the combined accounts of the Guarantor Subsidiaries, the combined accounts of the Non-Guarantor Subsidiaries, the combining and consolidating adjustments and eliminations and the Issuer’s consolidated accounts for the dates and periods indicated. For purposes of the following condensed combining and consolidating information, the Issuer’s investments in its subsidiaries and the Guarantor and Non-Guarantor Subsidiaries’ investments in its subsidiaries are accounted for under the equity method of accounting. SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2018 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 216.0 $ 1,239.5 $ (4.6 ) $ 1,450.9 Equity in earnings of subsidiaries 34.3 25.2 — (59.5 ) — Total revenues, net of equity in earnings of subsidiaries 34.3 241.2 1,239.5 (64.1 ) 1,450.9 Costs and operating expenses Cost of products sold and operating expenses — 165.7 963.4 (4.6 ) 1,124.5 Selling, general and administrative expenses 6.5 11.8 47.8 — 66.1 Depreciation and amortization expenses — 8.8 132.8 — 141.6 Total costs and operating expenses 6.5 186.3 1,144.0 (4.6 ) 1,332.2 Operating income 27.8 54.9 95.5 (59.5 ) 118.7 Interest (income) expense, net - affiliate — (6.0 ) 6.0 — — Interest expense (income), net 3.1 (1.6 ) 59.9 — 61.4 Total interest expense (income), net 3.1 (7.6 ) 65.9 — 61.4 Loss on extinguishment of debt 0.3 — — — 0.3 Income before income tax (benefit) expense 24.4 62.5 29.6 (59.5 ) 57.0 Income tax (benefit) expense (1.8 ) 12.1 (5.7 ) — 4.6 Loss from equity method investment — — 5.4 — 5.4 Net income 26.2 50.4 29.9 (59.5 ) 47.0 Less: Net income attributable to noncontrolling interests — — 20.8 — 20.8 Net income attributable to SunCoke Energy, Inc. $ 26.2 $ 50.4 $ 9.1 $ (59.5 ) $ 26.2 Comprehensive income $ 34.3 $ 50.6 $ 37.8 $ (67.6 ) $ 55.1 Less: Comprehensive income attributable to noncontrolling interests — — 20.8 — 20.8 Comprehensive income attributable to SunCoke Energy, Inc. $ 34.3 $ 50.6 $ 17.0 $ (67.6 ) $ 34.3 SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2017 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 209.6 $ 1,126.3 $ (4.4 ) $ 1,331.5 Equity in earnings (loss) of subsidiaries 109.9 (54.5 ) — (55.4 ) — Total revenues, net of equity in earnings (loss) of subsidiaries 109.9 155.1 1,126.3 (59.8 ) 1,331.5 Costs and operating expenses Cost of products sold and operating expenses — 156.6 867.9 (4.4 ) 1,020.1 Selling, general and administrative expenses 8.7 22.7 47.6 — 79.0 Depreciation and amortization expenses — 7.5 120.7 — 128.2 Total costs and operating expenses 8.7 186.8 1,036.2 (4.4 ) 1,227.3 Operating income (loss) 101.2 (31.7 ) 90.1 (55.4 ) 104.2 Interest (income) expense, net - affiliate — (7.5 ) 7.5 — — Interest expense, net 4.9 0.1 56.9 — 61.9 Total interest expense (income), net 4.9 (7.4 ) 64.4 — 61.9 Gain on extinguishment of debt 0.4 — 20.0 — 20.4 Income (loss) before income tax (benefit) expense 95.9 (24.3 ) 5.7 (55.4 ) 21.9 Income tax (benefit) expense (26.5 ) (150.2 ) 95.1 — (81.6 ) Net income (loss) 122.4 125.9 (89.4 ) (55.4 ) 103.5 Less: Net loss attributable to noncontrolling interests — — (18.9 ) — (18.9 ) Net income (loss) attributable to SunCoke Energ y, Inc. $ 122.4 $ 125.9 $ (70.5 ) $ (55.4 ) $ 122.4 Comprehensive income (loss) $ 121.3 $ 125.3 $ (91.0 ) $ (53.2 ) $ 102.4 Less: Comprehensive loss attributable to noncontrolling interests — — (18.9 ) — (18.9 ) Comprehensive income (loss) attributable to SunCoke Energ y, Inc. $ 121.3 $ 125.3 $ (72.1 ) $ (53.2 ) $ 121.3 SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2016 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 176.7 $ 1,050.5 $ (3.9 ) $ 1,223.3 Equity in earnings of subsidiaries 19.7 51.3 — (71.0 ) — Total revenues, net of equity in earnings of subsidiaries 19.7 228.0 1,050.5 (74.9 ) 1,223.3 Costs and operating expenses Cost of products sold and operating expenses — 130.7 779.1 (3.9 ) 905.9 Selling, general and administrative expenses 12.9 25.6 52.1 — 90.6 Depreciation and amortization expenses — 9.2 105.0 — 114.2 Loss on divestiture of business and impairments — — 14.7 — 14.7 Total costs and operating expenses 12.9 165.5 950.9 (3.9 ) 1,125.4 Operating income 6.8 62.5 99.6 (71.0 ) 97.9 Interest (income) expense, net - affiliate — (7.6 ) 7.6 — — Interest expense, net 6.0 0.3 48.5 — 54.8 Total interest expense (income), net 6.0 (7.3 ) 56.1 — 54.8 Gain on extinguishment of debt, net — — (25.0 ) — (25.0 ) Income before income tax (benefit) expense and loss (gain) from equity method investment 0.8 69.8 68.5 (71.0 ) 68.1 Income tax (benefit) expense (13.6 ) 38.7 (16.5 ) — 8.6 Net income 14.4 31.1 85.0 (71.0 ) 59.5 Less: Net income attributable to noncontrolling interests — — 45.1 — 45.1 Net income attributable to SunCoke Energy, Inc. $ 14.4 $ 31.1 $ 39.9 $ (71.0 ) $ 14.4 Comprehensive income $ 15.2 $ 30.8 $ 86.1 $ (71.8 ) $ 60.3 Less: Comprehensive income attributable to noncontrolling interests — — 45.1 — 45.1 Comprehensive income attributable to SunCoke Energy, Inc. $ 15.2 $ 30.8 $ 41.0 $ (71.8 ) $ 15.2 SunCoke Energy, Inc. Condensed Consolidating Balance Sheet December 31, 2018 (Dollars in millions, except per share amounts) Issuer Guarantor Non- Combining Total Assets Cash and cash equivalents $ — $ 123.2 $ 22.5 $ — $ 145.7 Receivables — 13.3 62.1 — 75.4 Inventories — 10.6 99.8 — 110.4 Income tax receivable — — 96.1 (95.4 ) 0.7 Other current assets — 1.8 1.0 — 2.8 Advances to affiliates — 281.1 — (281.1 ) — Total current assets — 430.0 281.5 (376.5 ) 335.0 Notes receivable from affiliate — — 200.0 (200.0 ) — Properties, plants and equipment, net — 54.3 1,416.8 — 1,471.1 Goodwill — 3.4 73.5 — 76.9 Other intangibles assets, net — 1.1 155.7 — 156.8 Deferred income taxes 7.0 — — (7.0 ) — Deferred charges and other assets — 5.1 0.4 — 5.5 Total assets $ 7.0 $ 493.9 $ 2,127.9 $ (583.5 ) $ 2,045.3 Liabilities and Equity Advances from affiliate $ 167.3 $ — $ 113.8 $ (281.1 ) $ — Accounts payable — 14.7 100.3 — 115.0 Accrued liabilities 1.8 13.7 30.1 — 45.6 Deferred revenue — — 3.0 — 3.0 Current portion of long-term debt and financing 1.1 — 2.8 — 3.9 Interest payable 0.4 — 3.2 — 3.6 Income taxes payable 1.9 93.5 — (95.4 ) — Total current liabilities 172.5 121.9 253.2 (376.5 ) 171.1 Long term-debt and financing obligation 41.2 — 793.3 — 834.5 Payable to affiliate — 200.0 — (200.0 ) — Accrual for black lung benefits — 10.9 34.0 — 44.9 Retirement benefit liabilities — 12.2 13.0 — 25.2 Deferred income taxes — 194.9 66.8 (7.0 ) 254.7 Asset retirement obligations — — 14.6 — 14.6 Other deferred credits and liabilities 3.5 6.6 7.5 — 17.6 Total liabilities 217.2 546.5 1,182.4 (583.5 ) 1,362.6 Equity Preferred stock, $0.01 par value. Authorized 50,000,000 — — — — — Common stock, $0.01 par value. Authorized 0.7 — — — 0.7 Treasury stock, 7,477,657 shares at December 31, 2018 (140.7 ) — — (140.7 ) Additional paid-in capital 488.9 61.0 612.8 (673.9 ) 488.8 Accumulated other comprehensive loss (13.1 ) (2.0 ) (11.1 ) 13.1 (13.1 ) Retained earnings 127.5 526.1 124.2 (650.4 ) 127.4 Equity investment eliminations (673.5 ) (637.7 ) — 1,311.2 — Total SunCoke Energy, Inc. stockholders’ equity (210.2 ) (52.6 ) 725.9 — 463.1 Noncontrolling interests — — 219.6 — 219.6 Total equity (210.2 ) (52.6 ) 945.5 — 682.7 Total liabilities and equity $ 7.0 $ 493.9 $ 2,127.9 $ (583.5 ) $ 2,045.3 SunCoke Energy, Inc. Condensed Consolidating Balance Sheet December 31, 2017 (Dollars in millions, except per share amounts) Issuer Guarantor Non- Combining Total Assets Cash and cash equivalents $ — $ 103.6 $ 16.6 $ — $ 120.2 Receivables — 17.1 51.4 — 68.5 Inventories — 9.1 101.9 — 111.0 Income taxes receivable — — 88.1 (83.3 ) 4.8 Other current assets — 4.6 2.1 — 6.7 Advances to affiliate — 245.8 — (245.8 ) — Total current assets — 380.2 260.1 (329.1 ) 311.2 Notes receivable from affiliate — 89.0 300.0 (389.0 ) — Properties, plants and equipment, net — 59.8 1,441.5 — 1,501.3 Goodwill — 3.4 73.5 — 76.9 Other intangible assets, net — 1.7 166.2 — 167.9 Deferred income taxes 7.1 — — (7.1 ) — Deferred charges and other assets — 2.3 0.5 — 2.8 Total assets $ 7.1 $ 536.4 $ 2,241.8 $ (725.2 ) $ 2,060.1 Liabilities and Equity Advances from affiliate $ 162.2 $ — $ 83.6 $ (245.8 ) $ — Accounts payable — 16.4 99.1 — 115.5 Accrued liabilities 1.5 19.7 32.0 — 53.2 Deferred Revenue — — 1.7 — 1.7 Current portion of long-term debt and financing obligation — — 2.6 — 2.6 Interest payable 1.4 — 4.0 — 5.4 Income taxes payable 1.9 81.4 — (83.3 ) — Total current liabilities 167.0 117.5 223.0 (329.1 ) 178.4 Long-term debt and financing obligation 42.7 — 818.4 — 861.1 Payable to affiliate — 300.0 89.0 (389.0 ) — Accrual for black lung benefits — 11.8 33.1 — 44.9 Retirement benefit liabilities — 13.7 14.5 — 28.2 Deferred income taxes — 193.8 71.1 (7.1 ) 257.8 Asset retirement obligations — — 14.0 — 14.0 Other deferred credits and liabilities 3.7 6.4 6.0 — 16.1 Total liabilities 213.4 643.2 1,269.1 (725.2 ) 1,400.5 Equity Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued and outstanding shares at December 31, 2017 — — — — — Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,707,304 shares at December 31, 2017 0.7 — — — 0.7 Treasury stock, 7,477,657 shares at (140.7 ) — — — (140.7 ) Additional paid-in capital 486.2 141.0 641.9 (782.9 ) 486.2 Accumulated other comprehensive loss (21.2 ) (2.2 ) (19.0 ) 21.2 (21.2 ) Retained earnings 101.2 475.6 116.4 (592.0 ) 101.2 Equity investment eliminations (632.5 ) (721.2 ) — 1,353.7 — Total SunCoke Energy, Inc. stockholders’ equity (206.3 ) (106.8 ) 739.3 — 426.2 Noncontrolling interests — — 233.4 — 233.4 Total equity (206.3 ) (106.8 ) 972.7 — 659.6 Total liabilities and equity $ 7.1 $ 536.4 $ 2,241.8 $ (725.2 ) $ 2,060.1 SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows Years Ended December 31, 2018 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income (loss) $ 26.2 $ 50.4 $ 29.9 $ (59.5 ) $ 47.0 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Loss from equity method investment — — 5.4 — 5.4 Depreciation and amortization expense — 8.8 132.8 — 141.6 Deferred income tax (benefit) expense (0.2 ) 1.2 (4.4 ) — (3.4 ) Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.0 ) (1.4 ) — (2.4 ) Share-based compensation expense 3.1 — — — 3.1 Equity in loss of subsidiaries (34.3 ) (25.2 ) — 59.5 — Loss on extinguishment of debt 0.3 — — — 0.3 Changes in working capital pertaining to operating activities: Receivables — 3.8 (10.7 ) — (6.9 ) Inventories — (1.5 ) 2.1 — 0.6 Accounts payable — (1.6 ) 0.9 — (0.7 ) Accrued liabilities 0.4 (5.9 ) (1.8 ) — (7.3 ) Deferred revenue — — 1.3 — 1.3 Interest payable (1.0 ) — (0.8 ) — (1.8 ) Income taxes 0.3 12.2 (8.0 ) — 4.5 Other 0.3 (0.9 ) 5.1 — 4.5 Net cash (used in) provided by operating activities (4.9 ) 40.3 150.4 — 185.8 Cash Flows from Investing Activities: Capital expenditures — (2.8 ) (97.5 ) — (100.3 ) Sale of equity method investment — — 4.0 — 4.0 Other investing activities — — 0.5 — 0.5 Net cash used in investing activities — (2.8 ) (93.0 ) — (95.8 ) Cash Flows from Financing Activities: Proceeds from issuance of long-term debt 45.0 — — — 45.0 Repayment of long-term debt (45.7 ) — — — (45.7 ) Debt issuance costs (0.5 ) — — — (0.5 ) Proceeds from revolving facility — — 179.5 — 179.5 Repayment of revolving facility — — (204.5 ) — (204.5 ) Repayment of financing obligation — — (2.6 ) — (2.6 ) Cash distributions to noncontrolling interests — — (31.9 ) — (31.9 ) Acquisition of additional interest in the Partnership — (4.2 ) — — (4.2 ) Other financing activities 0.7 — (0.3 ) — 0.4 Net increase (decrease) in advances from affiliates 5.4 (13.7 ) 8.3 — — Net cash provided by (used in) financing activities 4.9 (17.9 ) (51.5 ) — (64.5 ) Net increase in cash, cash equivalents and restricted cash — 19.6 5.9 — 25.5 Cash, cash equivalents and restricted cash at beginning of year — 103.6 16.6 — 120.2 Cash, cash equivalents and restricted cash at end of year $ — $ 123.2 $ 22.5 $ — $ 145.7 SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows Years Ended December 31, 2017 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income (loss) $ 122.4 $ 125.9 $ (89.4 ) $ (55.4 ) $ 103.5 Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities: Depreciation and amortization expense — 7.5 120.7 — 128.2 Deferred income tax (benefit) expense (22.8 ) (170.1 ) 105.7 — (87.2 ) Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.0 ) (0.8 ) — (1.8 ) Share-based compensation expense 4.7 — 0.1 — 4.8 Equity in (loss) earnings of subsidiaries (109.9 ) 54.5 — 55.4 — Loss on extinguishment of debt 0.4 — 20.0 — 20.4 Changes in working capital pertaining to operating activities (net of the effects of divestiture): Receivables — (4.9 ) (2.9 ) — (7.8 ) Inventories — (0.1 ) (18.4 ) — (18.5 ) Accounts payable — 3.0 8.7 — 11.7 Accrued liabilities (0.2 ) (1.3 ) 4.1 — 2.6 Deferred revenue — — (0.8 ) — (0.8 ) Interest payable (0.1 ) — (10.7 ) — (10.8 ) Income taxes (2.7 ) 16.3 (13.8 ) — (0.2 ) Other 1.3 — 3.1 — 4.4 Net cash (used in) provided by operating activities (6.9 ) 29.8 125.6 — 148.5 Cash Flows from Investing Activities: Capital expenditures — (4.1 ) (71.5 ) — (75.6 ) Return of Brazilian investment — — 20.5 — 20.5 Net cash used in investing activities — (4.1 ) (51.0 ) — (55.1 ) Cash Flows from Financing Activities: Proceeds from issuance of long-term debt — — 693.7 — 693.7 Repayment of long-term debt — — (644.9 ) — (644.9 ) Debt issuance costs (1.6 ) — (15.8 ) — (17.4 ) Proceeds from revolving facility — — 350.0 — 350.0 Repayment of revolving facility — — (392.0 ) — (392.0 ) Repayment of financing obligation — — (2.5 ) — (2.5 ) Cash distributions to noncontrolling interests — — (47.0 ) — (47.0 ) Acquisition of additional interest in the Partnership — (48.7 ) — — (48.7 ) Other financing activities 1.1 — — — 1.1 Net increase (decrease) in advances from affiliates 7.4 66.9 (74.3 ) — — Net cash provided by (used in) financing activities 6.9 18.2 (132.8 ) — (107.7 ) Net increase (decrease) in cash, cash equivalents and restricted cash — 43.9 (58.2 ) — (14.3 ) Cash, cash equivalents and restricted cash at beginning of year — 59.7 74.8 — 134.5 Cash, cash equivalents and restricted cash at end of year $ — $ 103.6 $ 16.6 $ — $ 120.2 SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows December 31, 2016 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income $ 14.4 $ 31.1 $ 85.0 $ (71.0 ) $ 59.5 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Depreciation and amortization expense — 9.2 105.0 — 114.2 Deferred income tax (benefit) expense (16.6 ) 8.7 11.0 — 3.1 Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.5 ) (1.1 ) — (2.6 ) Share-based compensation expense 6.5 — — — 6.5 Equity in loss of subsidiaries (19.7 ) (51.3 ) — 71.0 — Gain on extinguishment of debt — — (25.0 ) — (25.0 ) Loss on divestiture of business and impairments — — 14.7 — 14.7 Changes in working capital pertaining to operating activities (net of acquisitions): Receivables — (4.3 ) 8.0 — 3.7 Inventories — (3.7 ) 33.1 — 29.4 Accounts payable — 4.6 (5.4 ) — (0.8 ) Accrued liabilities 1.5 4.8 0.5 — 6.8 Deferred revenue — — 0.4 — 0.4 Interest payable 0.1 — (2.8 ) — (2.7 ) Income taxes (6.9 ) 28.2 (14.3 ) — 7.0 Other 2.5 8.9 (6.5 ) — 4.9 Net cash (used in) provided by operating activities (18.2 ) 34.7 202.6 — 219.1 Cash Flows from Investing Activities: Capital expenditures — (5.7 ) (58.0 ) — (63.7 ) Return of Brazilian investment — — 20.5 — 20.5 Divestiture of coal business — — (12.8 ) — (12.8 ) Other investing activities — — 2.1 — 2.1 Net cash used in investing activities — (5.7 ) (48.2 ) — (53.9 ) Cash Flows from Financing Activities: Repayment of long-term debt — — (66.1 ) — (66.1 ) Debt issuance costs — — (0.2 ) — (0.2 ) Proceeds from revolving facility — — 28.0 — 28.0 Repayment of revolving facility (60.4 ) — (38.0 ) — (98.4 ) Proceeds from financing obligation — — 16.2 — 16.2 Repayment of financing obligation — — (1.0 ) — (1.0 ) Cash distributions to noncontrolling interests — — (49.4 ) — (49.4 ) Other financing activities (0.3 ) (1.1 ) — — (1.4 ) Net increase (decrease) in advances from affiliates 78.9 (38.8 ) (40.1 ) — — Net cash provided by (used in) financing activities 18.2 (39.9 ) (150.6 ) — (172.3 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (10.9 ) 3.8 — (7.1 ) Cash, cash equivalents and restricted cash at beginning of year — 70.6 71.0 — 141.6 Cash, cash equivalents and restricted cash at end of year $ — $ 59.7 $ 74.8 $ — $ 134.5

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts could differ from these estimates.
Reclassifications	Reclassifications Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the current year presentation.
Revenue Recognition	Revenue Recognition The Company sells coke as well as steam and electricity and also provides mixing and/or handling services of coal and other aggregates. The Company also receives fees for operating the cokemaking plant in Brazil and for the licensing of its proprietary technology for use at this facility as well as reimbursement of substantially all of its operating costs. See Note 18 . Substantially all of the coke produced by the Company is sold pursuant to long-term contracts with its customers. The Company evaluates each of its contracts to determine whether the arrangement contains a lease under the applicable accounting standards. If the specific facts and circumstances indicate that it is remote that parties other than the contracted customer will take more than a minor amount of the coke that will be produced by the property, plant and equipment during the term of the coke supply agreement, and the price that the customer is paying for the coke is neither contractually fixed per unit nor equal to the current market price per unit at the time of delivery, then the long-term contract is deemed to contain a lease. The lease component of the price of coke represents the rental payment for the use of the property, plant and equipment, and all such payments are accounted for as contingent rentals as they are only earned by the Company when the coke is delivered and title passes to the customer. The total amount of revenue recognized by the Company for these contingent rentals represents less than 10 percent of consolidated sales and other operating revenues for each of the years ended December 31, 2018 , 2017 and 2016 . Upon adoption of Accounting Standard Codification ("ASC") 842, "Leases" , in 2019, these long-term contracts to sell coke will no longer be deemed to contain operating leases.
Cash Equivalents	Cash Equivalents The Company considers all highly liquid investments with a remaining maturity of three months or less at the time of purchase to be cash equivalents. These cash equivalents consist principally of certificates of deposit.
Inventories	Inventories Inventories are valued at the lower of cost or net realizable value. Cost is determined using the first-in, first-out method, except for the Company’s materials and supplies inventory, which are determined using the average-cost method. The Company utilizes the selling prices under its long-term coke supply contracts to record lower of cost or net realizable value inventory adjustments.
Properties, Plants and Equipment	Properties, Plants and Equipment Plants and equipment are depreciated on a straight-line basis over their estimated useful lives. Coke and energy plant, machinery and equipment are generally depreciated over 25 to 30 years. Logistics plant and equipment are generally depreciated over 15 to 35 years. Depreciation and amortization is excluded from cost of products sold and operating expenses and is presented separately on the Consolidated Statements of Income. Gains and losses on the disposal or retirement of fixed assets are reflected in earnings when the assets are sold or retired. Amounts incurred that extend an asset’s useful life, increase its productivity or add production capacity are capitalized. The Company accounts for changes in useful lives, when appropriate, as a change in estimate, with prospective application only. The Company capitalized interest of $3.2 million , $1.1 million , and $5.0 million in 2018 , 2017 and 2016 , respectively. Direct costs, such as outside labor, materials, internal payroll and benefits costs incurred during capital projects are capitalized; indirect costs are not capitalized. Normal repairs and maintenance costs are expensed as incurred.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. A long-lived asset, or group of assets, is considered to be impaired when the undiscounted net cash flows expected to be generated by the asset are less than its carrying amount. Such estimated future cash flows are highly subjective and are based on numerous assumptions about future operations and market conditions. The impairment recognized is the amount by which the carrying amount exceeds the fair market value of the impaired asset, or group of assets. It is also difficult to precisely estimate fair market value because quoted market prices for our long-lived assets may not be readily available. Therefore, fair market value is generally based on the present values of estimated future cash flows using discount rates commensurate with the risks associated with the assets being reviewed for impairment.
Goodwill and Other Intangibles	Goodwill and Other Intangibles Goodwill, which represents the excess of the purchase price over the fair value of net assets acquired, is tested 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. The Company performs its annual goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. The Company would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. See Note 8 . Intangible assets are primarily comprised of permits, customer contracts and customer relationships. Intangible assets are amortized over their useful lives in a manner that reflects the pattern in which the economic benefit of the intangible asset is consumed. Intangible assets are assessed for impairment when a triggering event occurs.
Investment in Brazilian Cokemaking Operations	Investment in Brazilian Cokemaking Operations On November 28, 2016, ArcelorMittal Brazil redeemed SunCoke’s indirectly held preferred and common equity interest in Sol Coqueria Tubarão S.A. ("Brazil Investment"), previously accounted for at cost, for consideration of $41.0 million . The Company received $20.5 million in cash at closing in 2016 and received the remaining $20.5 million in cash, plus interest of $0.2 million , in 2017. Starting in 2016, SunCoke receives $5.1 million in licensing fees per year, in addition to our per ton licensing fee, through 2023 related to the addition of certain patents to its existing intellectual property licensing agreement, which are currently in use by ArcelorMittal Brazil at the Brazil facility. The Company also extended the life of its patents with the Brazilian authorities through 2033, providing opportunity to extend the existing licensing agreement beyond 2023. Licensing fees are included in sales and other operating revenue on the Consolidated Statements of Income.
Income Taxes	Income Taxes Deferred tax asset and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those differences are projected to be recovered or settled. See Note 5 . The Company recognizes uncertain tax positions in its financial statements when minimum recognition threshold and measurement attributes are met in accordance with current accounting guidance.
Black Lung Benefit Liabilities	Black Lung Benefit Liabilities The Company has obligations related to coal workers’ pneumoconiosis, or black lung, benefits to certain of our 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 act as a self-insurer for both state and federal black lung benefits and adjust our liability each year based upon actuarial calculations of our expected future payments for these benefits.
Postretirement Benefit Plan Liabilities	Postretirement Benefit Plan Liabilities The postretirement benefit plans, which are frozen, are unfunded and the accumulated postretirement benefit obligation is fully recognized on the Consolidated Balance Sheets. Actuarial gains (losses) and prior service costs (benefits) which have not yet been recognized in net income are recognized as a credit (charge) to accumulated other comprehensive income (loss). The credit (charge) to accumulated other comprehensive income (loss), which is reflected net of related tax effects, is subsequently recognized in net income when amortized as a component of postretirement benefit plans expense included in interest expense, net on the Consolidated Statements of Income.
Asset Retirement Obligations	Asset Retirement Obligations The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The associated asset retirement costs are capitalized as part of the carrying amount of the asset and depreciated over its remaining estimated useful life. The Company’s asset retirement obligations primarily relate to costs associated with restoring land to its original state.
Shipping and Handling Costs	Shipping and Handling Costs Shipping and handling costs are included in cost of products sold and operating expenses on the Consolidated Statements of Income and are generally passed through to our customers. The Company has elected the practical expedient under ASC 606, "Revenue from Contracts with Customers", to account for shipping and handling activities as a promise to fulfill the transfer of coke.
Share-based Compensation	Share-Based Compensation We measure the cost of employee services in exchange for equity instrument awards and cash awards based on the grant-date fair value of the award. The cash awards and performance metrics of equity awards are remeasured on a quarterly basis. The market metrics of equity awards are not remeasured. The total cost is recognized over the requisite service period. Award forfeitures are accounted for as they occur. The costs of equity awards and cash awards were recorded to additional paid-in capital and accrued liabilities, respectively, on the Consolidated Balance Sheets.
Fair Value Measurements	Fair Value Measurements The Company determines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As required, the Company utilizes valuation techniques that maximize the use of observable inputs (levels 1 and 2) and minimize the use of unobservable inputs (level 3) within the fair value hierarchy included in current accounting guidance. Assets and liabilities are classified within the fair value hierarchy based on the lowest level (least observable) input that is significant to the measurement in its entirety.
Currency Transactions	Currency Translation The functional currency of the Company’s Brazilian operations is the Brazilian real. The Company’s Brazil operations translate its assets and liabilities into U.S. dollars at the current exchange rates in effect at the end of the fiscal period. The gains or losses that result from this process are shown as cumulative translation adjustments within accumulated other comprehensive loss in the Consolidated Balance Sheets. The revenue and expense accounts of foreign operations are translated into U.S. dollars at the average exchange rates during the period.
Recently Adopted Accounting Pronouncements and Recently Issued Pronouncements	Recently Adopted Accounting Pronouncements In May 2014, Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, “Revenue from Contracts with Customers (Topic 606),” which supersedes the revenue recognition requirements in “Revenue Recognition (Topic 605),” and requires entities to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company adopted this standard on January 1, 2018, using the modified retrospective method with no material impact on our revenue recognition model on an annual basis. See Note 18 . In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted cash.” The Company retrospectively adopted this ASU in the first quarter 2018 and modified the Company's cash flow presentation to include restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Historical restricted cash balances were related to cash withheld from the 2015 acquisition of CMT to fund the completion of certain expansion capital improvements, and the related immaterial impacts have been reclassified on the statement of cash flows for the years ended December 31, 2017 and 2016. The restricted cash balance was zero at both December 31, 2018 and December 31, 2017. In March 2017, the FASB issued ASU 2017-07, “Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” The Company adopted this ASU in the first quarter 2018 and retrospectively presented net periodic postretirement benefit cost in the income statement separately from the service cost component and outside a subtotal of income from operations. In conjunction with the adoption of this standard, expense of $1.3 million was reclassified from operating income and was recorded in interest expense, net on the Consolidated Statements of Income for both the years ended December 31, 2017 and 2016, respectively. See Note 10 . In February 2018, the FASB issued ASU 2018-02, “Income Statement-Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” The Company adopted this ASU in the first quarter 2018 and reclassified $1.1 million of deferred tax adjustments to accumulated other comprehensive income (loss) from retained earnings on the December 31, 2017 balance sheet for the tax effects resulting from the Tax Cuts and Jobs Act of 2017. Recently Issued Pronouncements In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." ASU 2016-02 requires leases to be recognized as assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. Subsequently, the FASB has issued various ASUs to provide further clarification around certain aspects of ASC 842, "Leases". This standard is effective for annual and interim periods in fiscal years beginning after December 15, 2018, with early adoption permitted. A multi-disciplined implementation team has gained an understanding of the accounting and disclosure provisions of the standard and analyzed t he impacts to our business, including the development of new accounting processes to account for our leases and support the required disclosures. We have implemented a technology tool to assist with the accounting and reporting requirements of this standard. While we are still finalizing the impact of adopting this standard, we expect that upon adoption the right-of-use assets and lease liabilities, such as land, the lease of our corporate office space and certain equipment rentals, will increase the reported assets and liabilities on our Consolidated Balance Sheets by approximately $5 million to $10 million. The Company adopted this standard on January 1, 2019, by applying the modified retrospective transition approach and electing not to adjust prior comparative periods.

Acquisition of Noncontrolling_2

Acquisition of Noncontrolling Interest (Tables)	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
Schedule of Changes in Ownership Interest	The following table summarizes the Company's purchases of outstanding Partnership common units in the open market: Years Ended December 31 2018 2017 (Dollars in millions) Units purchased 231,171 2,853,032 Cash paid $ 4.2 $ 48.7 Decrease in noncontrolling interest (1) $ 2.7 $ 29.6 Decrease in additional paid in capital (2) $ 1.2 $ 12.0 (1) Represents Partnership's net book value acquired by the Company. (2) Represents consideration paid in excess of the net book value of the noncontrolling interest acquired net of deferred tax adjustments of $0.3 million and $7.1 million for the years ended December 31, 2018 and 2017, respectively. The following table summarizes the effects of the changes in the Company's ownership interest in the Partnership on SunCoke's equity: Years Ended December 31, 2018 2017 (Dollars in millions) Net income attributable to SunCoke Energy, Inc $ 26.2 $ 122.4 Decrease in SunCoke Energy, Inc. equity for the purchase of additional interest in the Partnership (1.2 ) (12.0 ) Changes from net income attributable to SunCoke Energy, Inc and transfers to noncontrolling interest $ 25.0 $ 110.4

Customer Concentrations (Tables

Customer Concentrations (Tables)	12 Months Ended
	Dec. 31, 2018
Risks and Uncertainties [Abstract]
Schedules of Concentration of Risk, by Risk Factor	The table below shows sales to Murray and Foresight: Years ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue $ 62.5 $ 57.8 $ 53.5 Percent of Company sales and other operating revenue 4.3 % 4.3 % 4.4 % Percent of Logistics segment sales and other operating revenue, including intersegment sales 49.3 % 49.4 % 49.6 % The table below shows receivables due from Murray and Foresight: December 31, 2018 2017 (Dollars in millions) Murray and Foresight $ 3.2 $ 9.7 The table below shows receivables due from the Company's significant customers: December 31, 2018 2017 (Dollars in millions) AM USA and ArcelorMittal Brazil $ 34.3 $ 25.7 AK Steel $ 25.3 $ 13.2 U.S. Steel $ 5.2 $ 5.6 The table below shows sales to the Company's significant customers: Years ended December 31, 2018 2017 2016 Sales and other operating revenue Percent of Company sales and other operating revenue Sales and other operating revenue Percent of Company sales and other operating revenue Sales and other operating revenue Percent of Company sales and other operating revenue (Dollars in millions) AM USA and ArcelorMittal Brazil (1) $ 735.8 50.7 % $ 678.2 50.9 % $ 596.6 48.8 % AK Steel (2) $ 377.9 26.0 % $ 331.3 24.9 % $ 350.0 28.6 % U.S. Steel (3) $ 206.8 14.3 % $ 214.1 16.1 % $ 185.3 15.1 % (1) Represents revenues included in our Domestic Coke and Brazil Coke segments. (2) Represents revenues included in our Domestic Coke segment. (3) Represents revenues included in our Domestic Coke and Logistics segments.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Components of income before income tax expense	The components of income before income tax (benefit) expense and loss from equity method investment are as follows: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Domestic $ 39.3 $ 4.3 $ 52.5 Foreign 17.7 17.6 15.6 Total $ 57.0 $ 21.9 $ 68.1
Components of income tax expense	ncome tax expense (benefit) consisted of the following: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Current tax expense: U.S. federal $ 1.4 $ 1.7 $ 2.7 State 2.1 (1.0 ) (2.2 ) Foreign 4.5 4.9 5.0 Total current tax expense 8.0 5.6 5.5 Deferred tax expense: U.S. federal (3.1 ) (99.7 ) (1.5 ) State (0.3 ) 12.5 4.6 Total deferred tax (benefit) expense (3.4 ) (87.2 ) 3.1 Total $ 4.6 $ (81.6 ) $ 8.6
Reconciliation of income tax expense	The reconciliation of income tax expense at the U.S. statutory rate to income tax expense (benefit) is as follows: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Income tax expense at U.S. statutory rate $ 12.0 21.0 % $ 7.7 35.0 % $ 23.8 35.0 % Increase (reduction) in income taxes resulting from: Impact of Final Regulations (1) (1.4 ) (2.5 )% 64.2 293.2 % — — % Impact of Tax Legislation (2) (4.8 ) (8.4 )% (154.7 ) (706.4 )% — — % Income attributable to noncontrolling interests in partnerships (3) (3.9 ) (6.8 )% (5.4 ) (24.7 )% (15.6 ) (23.0 )% State and other income taxes, net of federal income tax effects 1.6 2.8 % 2.0 9.1 % 1.1 1.7 % Change in valuation allowance (4) 0.7 1.2 % 3.9 17.8 % 0.4 0.6 % Other 0.4 0.7 % 0.7 3.2 % (1.1 ) (1.6 )% Income tax (benefit) expense at effective tax rate $ 4.6 8.0 % $ (81.6 ) (372.8 )% $ 8.6 12.7 % (1) In January 2017, the Internal Revenue Service ("IRS") announced its decision to exclude cokemaking as a qualifying income generating activity in its final regulations (the "Final Regulations") issued under section 7704(d)(1)(E) of the Internal Revenue Code relating to the qualifying income exception for publicly traded partnerships. Subsequent to the 10-year transition period, certain cokemaking entities in the Partnership will become taxable as corporations. As a result, the Partnership recorded deferred income tax expense of $148.6 million to set up its initial deferred income tax liability during 2017, primarily related to differences in the book and tax basis of fixed assets, which are expected to exist at the end of the 10-year transition period when the cokemaking operations become taxable. However, the Company had previously recorded $84.4 million of the deferred income tax liability in its financial statements related to the Company's share of the deferred tax liability for the book and tax differences in its investment in the Partnership. As such, the Company's 2017 financial statements reflect the $64.2 million incremental impact from the Final Regulations solely attributable to the Partnership’s public unitholders, which was also recorded as an equal reduction to noncontrolling interest. In 2018, the Partnership recorded a deferred tax benefit of $3.6 million related to its changes in projected deferred tax liability associated with projected book and tax differences at the end of the 10-year transition period due to current period additions and changes in estimated useful lives of certain assets. The Company's 2018 financial statements reflect a $1.4 million benefit, which is solely attributable to the Partnership’s public unitholders and was also recorded as an equal reduction to noncontrolling interest. As a result, the Final Regulations have no impact to net income attributable to the Company. (2) On December 22, 2017, the Tax Legislation was enacted. The Tax Legislation significantly revised the U.S. corporate income tax structure, including lowering corporate income tax rates. In addition, the SEC staff released Staff Accounting Bulletin 118 on December 23, 2017, which provided for companies to record a provisional impact of the Tax Legislation during a measurement period, not to exceed one year, in situations where companies do not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under ASC 740, "Income Taxes", for certain income tax effects of the Tax Legislation for the reporting period which includes enactment. During 2017, SunCoke recorded a provisional net income tax benefit of $154.7 million , of which $125.0 million was attributable to the Company, for the impact of this Tax Legislation. These benefits were primarily due to the $169.0 million net benefit resulting from the remeasurement of U.S. deferred income tax liabilities and assets at the lower enacted corporate tax rates. During 2017, based on information available at the time, the Company recorded provisional income tax expense of $14.3 million for a valuation allowance against $19.0 million of foreign tax credit carryforwards that the Company believed would not be realized prior to their expiration as a result of the Tax Legislation. Based on an updated analysis of the foreign tax credit rules relating to the new Tax Legislation, the Company revised its estimate of the realizability of its foreign tax credits, resulting in a net $4.8 million benefit during the third quarter of 2018. There were no other significant changes to previous estimates and amounts recorded in 2017 relating to this Tax Legislation. (3) Excludes the impact of the Final Regulations on qualifying income discussed above. No income tax expense is reflected in the Consolidated Statements of Income for income attributable to noncontrolling interests in partnership entities. (4)
Tax effects of temporary differences that comprise the net deferred income tax liability	The tax effects of temporary differences that comprise the net deferred income tax liability from operations are as follows: December 31, 2018 2017 (Dollars in millions) Deferred tax assets: Retirement benefit liabilities $ 6.4 $ 7.1 Black lung benefit liabilities 11.3 11.6 Share-based compensation 6.4 6.1 Federal tax credit carryforward (1) 21.5 23.2 Foreign tax credit carryforward (2) 15.9 19.0 Federal net operating loss — 2.5 Section 163(j) interest limitation carryforward (3) 1.8 — State tax credit carryforward, net of federal income tax effects (4) 2.4 4.0 State net operating loss carryforward, net of federal income tax effects (5) 13.5 13.9 Other liabilities not yet deductible 4.9 4.3 Total deferred tax assets 84.1 91.7 Less valuation allowance (6) (20.7 ) (26.2 ) Deferred tax asset, net 63.4 65.5 Deferred tax liabilities: Properties, plants and equipment (111.5 ) (114.9 ) Investment in partnerships (206.6 ) (208.4 ) Total deferred tax liabilities (318.1 ) (323.3 ) Net deferred tax liability $ (254.7 ) $ (257.8 ) (1) Federal tax credit carryforward expires in 2032 through 2034. (2) Foreign tax credit carryforward expires in 2023 through 2028. (3) The Tax Legislation generally limits the deductibility of business interest expense to 30 percent of adjusted taxable income. This limitation resulted in a deferred tax asset as it is eligible for deduction in future taxable years and has no expiration. (4) State tax credit carryforward, net of federal income tax effects expires in 2019 through 2023. (5) State net operating loss carryforward, net of federal income tax effects expires in 2023 through 2038. (6) Primarily related to state tax credit and net operating loss carryforwards and the $9.9 million allowance against the foreign tax credit carryforward.

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Components of inventories	These components of inventories were as follows: December 31, 2018 2017 (Dollars in millions) Coal $ 59.9 $ 61.4 Coke 8.6 12.3 Materials, supplies and other 41.9 37.3 Total inventories $ 110.4 $ 111.0

Properties, Plants and Equipmen

Properties, Plants and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Components of net properties, plants and equipment	The components of net properties, plants and equipment were as follows: December 31, 2018 2017 (Dollars in millions) Coke and energy plant, machinery and equipment (1) $ 1,876.3 $ 1,812.0 Logistics plant, machinery and equipment 218.3 216.2 Land and land improvements 119.7 118.7 Construction-in-progress 72.7 51.9 Other 39.9 35.7 Gross investment, at cost 2,326.9 2,234.5 Less: accumulated depreciation (1) (855.8 ) (733.2 ) Total properties, plants and equipment, net $ 1,471.1 $ 1,501.3 (1) Includes assets, consisting mainly of coke and energy plant, machinery and equipment, with a gross investment totaling $1,416.2 million and $1,337.3 million and accumulated depreciation of $554.1 million and $475.8 million at December 31, 2018 and December 31, 2017 , respectively, which are subject to long-term contracts to sell coke and are deemed to contain operating leases. Upon adoption of ASC 842, "Leases", in 2019, these contracts will no longer be deemed to contain operating leases.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	December 31, 2018 and 2017 (Dollars in millions) Domestic Coke $ 3.4 Logistics 73.5 Total $ 76.9
Schedule of Finite-Lived Intangible Assets	The following table summarizes the components of gross and net intangible asset balances: December 31, 2018 December 31, 2017 Weighted - Average Remaining Amortization Years Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net (Dollars in millions) Customer contracts 4 $ 31.7 $ 17.7 $ 14.0 $ 31.7 $ 13.8 $ 17.9 Customer relationships 13 28.7 7.5 21.2 28.7 5.7 23.0 Permits 24 139.0 17.4 121.6 139.0 12.2 126.8 Trade name — 1.2 1.2 — 1.2 1.0 0.2 Total $ 200.6 $ 43.8 $ 156.8 $ 200.6 $ 32.7 $ 167.9
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Based on the carrying value of finite-lived intangible assets as of December 31, 2018 , we estimate amortization expense for each of the next five years as follows: (Dollars in millions) 2019 $ 10.9 2020 10.7 2021 10.3 2022 10.3 2023 7.0 Thereafter 107.6 Total $ 156.8

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2018
Asset Retirement Obligation [Abstract]
Reconciliation of changes in the asset retirement obligation	The following table provides a reconciliation of changes in the asset retirement obligation from operations during each period: (Dollars in millions) Balance at December 31, 2016 $ 13.9 Liabilities settled (0.7 ) Accretion expense (1) 1.0 Revisions in estimated cash flows (0.2 ) Balance at December 31, 2017 $ 14.0 Liabilities settled (0.4 ) Accretion expense (1) 0.9 Revisions in estimated cash flows $ 0.1 Balance at December 31, 2018 $ 14.6 (1) Included in cost of products sold and operating expenses on the Consolidated Statements of Income.

Retirement Benefits Plans (Tabl

Retirement Benefits Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Postretirement benefit plans (benefit) expense	Postretirement benefit plans expense consisted of the following components: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Interest cost on benefit obligations $ 1.0 $ 1.1 $ 1.3 Amortization of: Actuarial losses 0.6 0.9 0.7 Prior service benefit (0.7 ) (0.7 ) (0.7 ) Total expense $ 0.9 $ 1.3 $ 1.3
Discount rates used to determine benefit obligations for the plans	The following discount rates were used to determine the benefit obligation: December 31, 2018 2017 Discount rate 4.00 % 3.35 % The following assumptions were used to determine postretirement benefit plans expense: December 31, 2018 2017 2016 Discount Rate 3.35 % 3.65 % 3.80 %
Recognized components of other comprehensive income (loss)	The following amounts were recognized as components of other comprehensive income (loss) before related tax impacts: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Reclassifications to earnings of: Actuarial loss amortization $ 0.6 $ 0.9 $ 0.7 Prior service benefit amortization (0.7 ) (0.7 ) (0.7 ) Retirement benefit plan funded status adjustments: Actuarial gains (losses) 0.8 (1.1 ) (1.8 ) Prior service benefit (1) — — 1.5 $ 0.7 $ (0.9 ) $ (0.3 ) (1) Effective January 1, 2017, a plan change occurred resulting in Medicare-eligible disabled participants transitioning from a Company-sponsored group medical plan to a federal health care exchange plan. The Company provides a subsidy to these participants each year. The plan change resulted in a decrease in the benefit obligation of $1.5 million during 2016.
Components of changes in benefit obligations and fair value of plan assets	The following table sets forth the components of the changes in benefit obligations: Years Ended December 31, 2018 2017 (Dollars in millions) Benefit obligation at beginning of year $ 31.3 $ 32.3 Interest cost 1.0 1.1 Actuarial (gain)/loss (0.8 ) 1.1 Benefits paid (3.3 ) (3.2 ) Benefit obligation at end of year (1) $ 28.2 $ 31.3 (1) Represents retirement benefit liabilities, including current portion, on the Consolidated Balance Sheets. The current portion of retirement liabilities, which totaled $3.0 million and $3.1 million at December 31, 2018 and 2017 , respectively, is classified in accrued liabilities on the Consolidated Balance Sheets.
Cumulative amounts not recognized	The following table sets forth the cumulative amounts not yet recognized in net income: Years Ended December 31, 2018 2017 (Dollars in millions) Cumulative amounts not yet recognized in net income: Actuarial losses $ 10.4 $ 11.8 Prior service benefits (2.6 ) (3.4 ) Accumulated other comprehensive loss (before related tax benefit) $ 7.8 $ 8.4
Expected benefit payments	The expected benefit payments through 2028 for the postretirement benefit plan are as follows: Year ending December 31: (Dollars in millions) 2019 $ 3.0 2020 2.9 2021 2.8 2022 2.6 2023 2.4 2024 through 2028 9.5

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Accrued liabilities	Accrued liabilities consist of following: December 31, 2018 2017 (Dollars in millions) Accrued benefits $ 21.2 $ 21.3 Current portion of postretirement benefit obligation 3.0 3.1 Other taxes payable 9.1 10.5 Current portion of black lung liability 4.5 5.4 Accrued legal 4.2 5.6 Other 3.6 7.3 Total accrued liabilities $ 45.6 $ 53.2

Debt and Financing Obligation (

Debt and Financing Obligation (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Total debt and financing obligation consisted of the following: December 31, 2018 2017 (Dollars in millions) 7.500 percent senior notes, due 2025 ("Partnership Notes") $ 700.0 $ 700.0 7.625 percent senior notes, due 2019 ("2019 Notes") — 44.6 Term loan, due 2022 ("Term Loan") 43.9 — SunCoke's revolving credit facility, due 2022 ("Revolving Facility") — — Partnership's revolving credit facility, due 2022 ("Partnership Revolver") 105.0 130.0 5.82 percent financing obligation, due 2021 ("Partnership Financing Obligation") 10.1 12.7 Total borrowings $ 859.0 $ 887.3 Original issue discount (5.4 ) (5.9 ) Debt issuance costs (15.2 ) (17.7 ) Total debt and financing obligation $ 838.4 $ 863.7 Less: current portion of long-term debt and financing obligation 3.9 2.6 Total long-term debt and financing obligation $ 834.5 $ 861.1
Schedule of Maturities of Long-term Debt	As of December 31, 2018 , the combined aggregate amount of maturities for long-term borrowings for each of the next five years is as follows: (Dollars in millions) 2019 $ 3.9 2020 (1) 10.7 2021 3.4 2022 141.0 2023 — 2024-Thereafter 700.0 Total $ 859.0 (1) Assumes the Partnership Financing Obligation early buyout option is exercised in 2020.

Commitments And Contingent Li_2

Commitments And Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Aggregate amount of future minimum annual rentals applicable to noncancelable operating leases and related subleases	The aggregate amount of future minimum annual rental payments applicable to noncancelable operating leases is as follows: Minimum (Dollars in millions) Year ending December 31: 2019 $ 2.0 2020 1.1 2021 1.0 2022 0.5 2023 0.1 2024-Thereafter 0.7 Total $ 5.4
Schedule of black lung benefit liabilities	The following table summarizes discount rates utilized, active claims, and the total black lung liabilities: December 31, 2018 2017 Discount rate (1) 4.0 % 3.3 % Active claims 345 351 Black lung liability (dollars in millions) (2) $ 49.4 $ 50.3 (1) The discount rate is determined based on a portfolio of high-quality corporate bonds with maturities that are consistent with the estimated duration of our black lung obligations. A decrease of 25 basis points in the discount rate would have increased black lung expense by $1.1 million in 2018. (2) The current portion of the black lung liability was $4.5 million and $5.4 million at December 31, 2018 and 2017 , respectively, and was included in accrued liabilities on the Consolidated Balance Sheets. The following table summarizes annual black lung payments and expense: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Payments $ 6.3 $ 7.4 $ 7.8 Expense $ 5.4 $ 7.5 $ 8.1

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Components of accumulated other comprehensive (loss) income	The following tables set forth the changes in the balance of accumulated other comprehensive loss, net of tax, by component: Benefit Plans Currency Translation Adjustments Total (Dollars in millions) At December 31, 2016 $ (4.8 ) $ (14.2 ) $ (19.0 ) Other comprehensive loss before reclassifications — (0.5 ) (0.5 ) Amounts reclassified from accumulated other comprehensive loss 0.2 — 0.2 Retirement benefit plans funded status adjustment (0.8 ) — (0.8 ) Net current period other comprehensive loss (0.6 ) (0.5 ) (1.1 ) Cumulative effect from adoption of ASU 2018-02 (1) (1.1 ) — (1.1 ) At December 31, 2017 $ (6.5 ) $ (14.7 ) $ (21.2 ) Other comprehensive loss before reclassifications — (1.4 ) (1.4 ) Amounts reclassified from accumulated other comprehensive loss (0.1 ) — (0.1 ) Retirement benefit plans funded status adjustment 0.6 — 0.6 Recognition of accumulated currency translation loss upon sale of equity method investment (2) — 9.0 9.0 Net current period other comprehensive loss 0.5 7.6 8.1 At December 31, 2018 $ (6.0 ) $ (7.1 ) $ (13.1 ) (1) As a result of the Tax Legislation, the Company revalued its deferred tax asset for our postretirement benefit plan for the impact of lower income tax rates, the impact of which was reclassified from accumulated other comprehensive loss to retained earnings. (2) These accumulated currency translation losses were recognized into income as a result of the sale of our equity method investment in VISA SunCoke. The tax benefit associated with the Company's benefit plans as of December 31, 2018 and 2017 was $ 1.8 million and $1.9 million , respectively.
Impact of net income of reclassification adjustments	The increase (decrease) on net income due to reclassification adjustments from accumulated other comprehensive income were as follows (1) : December 31, 2018 2017 2016 (Dollars in millions) Recognition of accumulated currency translation loss upon sale of equity method investment $ (9.0 ) $ — $ — Amortization of benefit plans to net income: (2) Actuarial loss $ (0.6 ) $ (0.9 ) $ (0.7 ) Prior service benefit 0.7 0.7 0.7 Total, net of tax (3) (8.9 ) (0.2 ) — (1) Amounts in parentheses indicate debits to net income. (2) These accumulated other comprehensive (income) loss components are included in the computation of postretirement benefit plan expense (benefit) and included in interest expense, net on the Consolidated Statements of Income. See Note 10 . (3) The related tax cost (benefit) was zero for all years presented.

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
Summary of information with respect to common stock option awards and performance share units	The following table summarizes information with respect to common stock option awards outstanding as of December 31, 2018 and stock option activity during the fiscal year then ended: Number of Weighted Weighted Average Remaining Contractual Term (years) Aggregate Outstanding at December 31, 2017 3,146,115 $ 15.31 5.6 $ 2.8 Granted 78,447 $ 10.49 Exercised (127,107 ) $ 6.49 Forfeited (211,667 ) $ 17.07 Outstanding at December 31, 2018 2,885,788 $ 15.46 4.8 $ 2.1 Exercisable at December 31, 2018 2,546,059 $ 16.38 4.1 $ 0.4 Expected to vest at December 31, 2018 339,729 $ 8.59 8.2 $ 0.9 The Company grants performance share units ("PSUs"), which represent the right to receive shares of the Company's common stock, contingent upon the attainment of Company performance and market goals and continued employment. The Company granted the following PSUs during the years ended December 31, 2018 and 2017: Shares Fair Value per Share Grant Date Fair Value (Dollars in millions) 2018 grant (1) 96,389 $ 11.36 $ 1.1 2017 grant (2) 385,758 $ 11.61 $ 4.5 (1) The service period for the 2018 PSUs ends on December 31, 2020 and the awards will vest during the first quarter of 2021. (2) The Company granted 237,610 PSUs in February 2017, for which the service period will end on December 31, 2019, and 148,148 PSUs in December 2017, for which the service period will end on December 31, 2020. These awards will vest during the first quarter of 2020 and 2021, respectively. The Company granted the following stock options during the years ended December 31, 2018 , 2017 and 2016 , with an exercise price equal to the closing price of our common stock on the date of grant: Weighted Average Per Share No. of Shares Exercise Price Weighted Average Grant Date Fair Value Traditional stock options: 2018 grant 78,447 $ 10.49 $ 5.38 2017 grant 157,196 $ 10.29 $ 5.32 2016 March grant 90,925 $ 6.03 $ 2.78 2016 February grant 95,001 $ 3.80 $ 1.71 Performance based options: 2017 grant 80,595 $ 9.85 $ 5.17 2016 March grant 90,925 $ 6.03 $ 2.42 2016 February grant 58,448 $ 3.80 $ 1.06
Weighted-average assumptions	The weighted-average fair value of employee stock options granted during the years ended December 31, 2018 , 2017 and 2016 was based on using the following weighted-average assumptions: Years Ended December 31, 2018 2017 2016 Risk free interest rate 3 % 2 % 1 % Expected term 6 years 6 years 5 years Volatility 52 % 53 % 52 % Dividend yield — % — % — %
Summary of information with respect to RSUs	The following table summarizes information with respect to RSUs outstanding as of December 31, 2018 and RSU activity during the fiscal year then ended: Number of Weighted Nonvested at December 31, 2017 106,397 $ 13.53 Granted 32,128 $ 10.49 Vested (87,131 ) $ 14.27 Forfeited (4,181 ) $ 8.37 Nonvested at December 31, 2018 47,213 $ 10.29 The Company granted the following restricted stock units ("RSUs") during the years ended December 31, 2018 and 2017 : Shares Weighted Average Grant-Date Fair Value Grant Date Fair Value (Dollars in millions) 2018 grants 32,128 10.49 $ 0.3 2017 grants 22,628 $ 9.85 $ 0.2
Summary of information with respect to PSUs	The Company granted the following PSUs during the year ended December 31, 2016 : ROIC Portion (1) TSR Portion (2) Total Shares Fair Value per Share Shares Fair Value per Share Grant Date Fair Value (Dollars in millions) 2016 March grant (3) 67,167 $ 10.51 201,500 $ 6.35 $ 2.0 2016 February grant 105,210 $ 5.66 105,210 $ 5.81 $ 1.2 (1) The number of PSUs that ultimately vest will be determined by the Company's three -year average pre-tax return on capital for the Company's coke and logistics businesses. Additionally, only applicable to the 2016 grants, if at any time during the vesting period the closing price of the Company's common stock equals or exceeds $9.00 per share for any 15 trading days, which was met during 2016, the pre-tax return on capital portion of the award, as adjusted, will be multiplied by two. (2) The number of PSUs that ultimately vest will be determined by the Company's three -year total shareholder return ("TSR") as compared to the TSR of the companies making up the S&P 600. (3) The final vesting value of the TSR portion of this award cannot exceed $4.9 million . The following table summarizes information with respect to unearned PSUs outstanding as of December 31, 2018 and PSU activity during the fiscal year then ended: Number of Weighted Nonvested at December 31, 2017 782,781 $ 10.06 Granted 96,389 $ 11.36 Vested (1,710 ) $ 16.90 Forfeited (125,085 ) $ 17.59 Nonvested at December 31, 2018 752,375 $ 8.86
Schedule of unrecognized compensation cost	Below is a summary of the compensation expense, unrecognized compensation costs, the period for which the unrecognized compensation cost is expected to be recognized over and the estimated forfeiture rate for each award: Years ended December 31, 2018 2017 2016 2018 2017 2016 December 31, 2018 Compensation Expense (1) Net of tax Unrecognized Compensation Cost Recognition Period (Dollars in millions) (Dollars in millions) (Years) Equity Awards: Stock Options $ 0.5 $ 1.3 $ 2.1 $ 0.4 $ 0.8 $ 1.3 $ 0.5 1.6 RSUs 0.4 1.1 2.6 0.3 0.7 1.7 $ 0.3 1.7 PSUs 1.9 1.9 1.4 1.7 1.2 0.9 $ 2.6 1.9 Total equity awards $ 2.8 $ 4.3 $ 6.1 $ 2.4 $ 2.7 $ 3.9 Liability Awards: Cash RSUs $ 0.8 $ 1.0 $ 0.7 $ 0.6 $ 0.6 $ 0.5 $ 0.7 1.4 Cash incentive award 0.9 0.2 0.1 0.7 0.1 0.1 $ 0.9 1.8 Total liability awards $ 1.7 $ 1.2 $ 0.8 $ 1.3 $ 0.7 $ 0.6 (1) Compensation expense is recognized by the Company in selling, general and administrative expenses on the Consolidated Statements of Income.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of the weighted-average number of common shares used to compute basic earnings per share ("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 earnings per share to those used to compute diluted EPS: Years Ended December 31, 2018 2017 2016 (Shares in millions) Weighted-average number of common shares outstanding-basic 64.7 64.3 64.2 Add: effect of dilutive share-based compensation awards 0.8 0.9 0.2 Weighted-average number of shares-diluted 65.5 65.2 64.4
Schedule of antidilutive securities excluded from computation of earnings per share	The following table shows stock options, restricted stock units, and performance stock units that are excluded from the computation of diluted earnings per share as the shares would have been anti-dilutive: Years Ended December 31, 2018 2017 2016 (Shares in millions) Stock options 2.7 2.9 3.0 Restricted stock units — — 0.2 Performance stock units 0.1 0.1 0.2 Total 2.8 3.0 3.4

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Changed in Deferred Revenue	The following table provides changes in the Company's deferred revenue: 2018 2017 (Dollars in millions) Beginning balance at December 31, 2017 and 2016, respectively $ 1.7 $ 2.5 Reclassification of the beginning contract liabilities to revenue, as a result of performance obligation satisfied (1.4 ) (2.1 ) Billings in excess of services performed, not recognized as revenue 2.7 1.3 Ending balance at December 31, 2018 and 2017, respectively $ 3.0 $ 1.7
Disaggregation of Revenue	The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue: Cokemaking $ 1,250.5 $ 1,140.8 $ 1,038.2 Energy 49.7 53.2 54.3 Logistics 101.0 89.7 82.9 Operating and licensing fees 40.4 43.4 39.5 Other 9.3 4.4 8.4 Sales and other operating revenue $ 1,450.9 $ 1,331.5 $ 1,223.3

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Business segment information	The following table includes Adjusted EBITDA, which is the measure of segment profit or loss and liquidity reported to the chief operating decision maker for purposes of allocating resources to the segments and assessing their performance: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Sales and other operating revenue: Domestic Coke $ 1,308.3 $ 1,195.0 $ 1,097.6 Brazil Coke 40.4 43.4 39.5 Logistics 102.2 93.1 84.7 Logistics intersegment sales 24.5 23.8 23.2 Corporate and Other (1) — — 1.5 Corporate and Other intersegment sales (1) — — 22.0 Elimination of intersegment sales (24.5 ) (23.8 ) (45.2 ) Total sales and other operating revenue $ 1,450.9 $ 1,331.5 $ 1,223.3 Adjusted EBITDA Domestic Coke $ 207.9 $ 188.9 $ 193.9 Brazil Coke 18.4 18.2 16.2 Logistics 72.6 70.8 63.9 Corporate and Other (2) (35.7 ) (43.2 ) (57.0 ) Total Adjusted EBITDA $ 263.2 $ 234.7 $ 217.0 Depreciation and amortization expense: Domestic Coke (3) $ 114.4 $ 102.6 $ 84.0 Brazil Coke 0.7 0.7 0.7 Logistics 25.1 24.4 24.8 Corporate and Other 1.4 0.5 4.7 Total depreciation and amortization expense $ 141.6 $ 128.2 $ 114.2 Capital expenditures: Domestic Coke $ 95.1 $ 68.8 $ 44.6 Logistics 5.2 4.4 17.4 Corporate and Other — 2.4 1.7 Total capital expenditures $ 100.3 $ 75.6 $ 63.7 (1) Corporate and Other revenues are related to our legacy coal mining business, which was disposed in April 2016. (2) Corporate and Other includes the activity from our legacy coal mining business, which incurred Adjusted EBITDA losses of $9.8 million , $10.5 million , and $15.0 million for the years ended December 31, 2018, 2017 and 2016, respectively. (3) We revised the estimated useful lives of certain assets in our Domestic Coke segment, primarily as a result of plans to replace major components of certain heat recovery steam generators with upgraded materials and design, resulting in additional depreciation of $9.2 million , or $0.14 per common share, during the year ended December 31, 2018. The following table sets forth the Company’s segment assets: December 31, 2018 2017 (Dollars in millions) Segment assets Domestic Coke $ 1,446.5 $ 1,439.7 Brazil Coke 15.1 10.9 Logistics 463.0 491.9 Corporate and Other 120.0 112.8 Segment assets, excluding income tax receivable 2,044.6 2,055.3 Tax assets 0.7 4.8 Total assets $ 2,045.3 $ 2,060.1
Reconciliation of Adjusted EBITDA (unaudited) to net income	elow are reconciliations of Adjusted EBITDA to net income and Adjusted EBITDA to net cash provided by operating activities, which are its most directly comparable financial measures calculated and presented in accordance with GAAP: Years Ended December 31, 2018 2017 2016 (Dollars in millions) Net cash provided by operating activities $ 185.8 $ 148.5 $ 219.1 Subtract: Depreciation and amortization expense 141.6 128.2 114.2 Deferred income tax (benefit) expense (3.4 ) (87.2 ) 3.1 Loss (gain) on extinguishment of debt 0.3 20.4 (25.0 ) Loss on divestiture of business — — 14.7 Loss from equity method investment 5.4 — — Changes in working capital and other (5.1 ) (16.4 ) 52.6 Net income $ 47.0 $ 103.5 $ 59.5 Add: Depreciation and amortization expense 141.6 128.2 114.2 Interest expense, net (1) 61.4 60.6 53.5 Loss (gain) on extinguishment of debt 0.3 20.4 (25.0 ) Income tax expense (benefit) 4.6 (81.6 ) 8.6 Contingent consideration adjustments (2) 2.5 (1.7 ) (10.1 ) Transaction costs (3) 0.4 — — Expiration of land deposits and write-off of costs related to potential new cokemaking facility (4) — 5.3 1.9 Non-cash reversal of acquired contractual obligation (5) — — (0.7 ) Loss on divestiture of business — — 14.7 Coal rationalization costs (6) — — 0.4 Loss from equity method investment 5.4 — — Adjusted EBITDA $ 263.2 $ 234.7 $ 217.0 Subtract: Adjusted EBITDA attributable to noncontrolling interest (7) 82.0 86.4 86.6 Adjusted EBITDA attributable to SunCoke Energy, Inc. $ 181.2 $ 148.3 $ 130.4 (1) In conjunction with the adoption of ASU 2017-07, the non-service type expense associated with the postretirement benefit plans was excluded from operating income and recorded in interest expense, net on the Consolidated Statements of Income during the periods presented. Amounts in prior periods were immaterial, and therefore, were not reclassified in the reconciliation of Adjusted EBITDA to net income and net cash provided by operating activities. (2) Adjustments to the fair value of the contingent consideration in 2018, 2017 and 2016 were primarily the result of modifications to the volume forecast. See Note 17 . (3) Represents costs incurred in connection with the Simplification Transaction. (4) In 2014, we finalized the required permitting and engineering plan for a potential new cokemaking facility, however, the project was terminated. As a result, during 2017 and 2016, the Company wrote-off previously capitalized engineering costs and land deposits for a potential new cokemaking facility of $5.3 million and $1.9 million , respectively. These costs were included in selling, general and administrative expenses on the Consolidated Statements of Income. (5) In association with the acquisition of CMT, we assumed certain performance obligations under existing contracts and recorded liabilities related to such obligations. In 2016, the Partnership reversed the liability as we no longer had any obligations under the contracts. (6) Prior to the divestiture of our coal mining business, the Company incurred coal rationalization costs including employee severance, contract termination costs and other costs to idle mines during the execution of our coal rationalization plan. (7) Reflects noncontrolling interests in Indiana Harbor and the portion of the Partnership owned by public unitholders.

Selected Quarterly Data (unau_2

Selected Quarterly Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of quarterly financial information	2018 2017 First Second Third Fourth (1) First (2) Second (3) Third Fourth (1)(4) (Dollars in millions) Sales and other operating revenue $ 350.5 $ 367.0 $ 364.5 $ 368.9 $ 309.7 $ 323.2 $ 339.0 $ 359.6 Gross profit (5) $ 47.0 $ 52.3 $ 45.8 $ 39.7 $ 42.2 $ 32.9 $ 51.3 $ 56.8 Net income (loss) $ 13.0 $ 11.4 $ 17.1 $ 5.5 $ (57.7 ) $ (31.5 ) $ 18.8 $ 173.9 Less: Net income (loss) attributable to noncontrolling interests $ 4.3 $ 7.2 $ 5.6 $ 3.7 $ (58.7 ) $ (7.3 ) $ 7.2 $ 39.9 Net income (loss) attributable to SunCoke Energy, Inc. $ 8.7 $ 4.2 $ 11.5 $ 1.8 $ 1.0 $ (24.2 ) $ 11.6 $ 134.0 Earnings (loss) attributable to SunCoke Energy, Inc. per common share: Basic (6) $ 0.13 $ 0.06 $ 0.18 $ 0.03 $ 0.02 $ (0.38 ) $ 0.18 $ 2.08 Diluted (6) $ 0.13 $ 0.06 $ 0.18 $ 0.03 $ 0.02 $ (0.38 ) $ 0.18 $ 2.05 (1) The Partnership recognized deferred revenue from Logistics take-or-pay billings for minimum volume shortfalls of $16.4 million into revenue in the fourth quarter of 2017. As a result of the increase in tons handled throughout 2018, there were no shortfalls to be recognized during the fourth quarter. (2) The first quarter of 2017 reflects the net impact to the Company’s deferred tax expense of $64.2 million related to the IRS Final Regulations on qualifying income all of which was attributable to unitholders of the Partnership. See Note 5 . (3) During the second quarter of 2017, the Partnership incurred $20.2 million of losses in connection with debt refinancing. (4) During the fourth quarter of 2017, the Company recorded $154.7 million of tax benefits as a result of the new Tax Legislation, $125.0 million of which was attributable to the Company. See Note 5 . (5) Gross profit equals sales and other operating revenue less cost of products sold and operating expenses and depreciation and amortization. (6) Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

Supplemental Condensed Combin_2

Supplemental Condensed Combining and Consolidating Financial Information (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Statement of Income	SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2018 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 216.0 $ 1,239.5 $ (4.6 ) $ 1,450.9 Equity in earnings of subsidiaries 34.3 25.2 — (59.5 ) — Total revenues, net of equity in earnings of subsidiaries 34.3 241.2 1,239.5 (64.1 ) 1,450.9 Costs and operating expenses Cost of products sold and operating expenses — 165.7 963.4 (4.6 ) 1,124.5 Selling, general and administrative expenses 6.5 11.8 47.8 — 66.1 Depreciation and amortization expenses — 8.8 132.8 — 141.6 Total costs and operating expenses 6.5 186.3 1,144.0 (4.6 ) 1,332.2 Operating income 27.8 54.9 95.5 (59.5 ) 118.7 Interest (income) expense, net - affiliate — (6.0 ) 6.0 — — Interest expense (income), net 3.1 (1.6 ) 59.9 — 61.4 Total interest expense (income), net 3.1 (7.6 ) 65.9 — 61.4 Loss on extinguishment of debt 0.3 — — — 0.3 Income before income tax (benefit) expense 24.4 62.5 29.6 (59.5 ) 57.0 Income tax (benefit) expense (1.8 ) 12.1 (5.7 ) — 4.6 Loss from equity method investment — — 5.4 — 5.4 Net income 26.2 50.4 29.9 (59.5 ) 47.0 Less: Net income attributable to noncontrolling interests — — 20.8 — 20.8 Net income attributable to SunCoke Energy, Inc. $ 26.2 $ 50.4 $ 9.1 $ (59.5 ) $ 26.2 Comprehensive income $ 34.3 $ 50.6 $ 37.8 $ (67.6 ) $ 55.1 Less: Comprehensive income attributable to noncontrolling interests — — 20.8 — 20.8 Comprehensive income attributable to SunCoke Energy, Inc. $ 34.3 $ 50.6 $ 17.0 $ (67.6 ) $ 34.3 SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2017 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 209.6 $ 1,126.3 $ (4.4 ) $ 1,331.5 Equity in earnings (loss) of subsidiaries 109.9 (54.5 ) — (55.4 ) — Total revenues, net of equity in earnings (loss) of subsidiaries 109.9 155.1 1,126.3 (59.8 ) 1,331.5 Costs and operating expenses Cost of products sold and operating expenses — 156.6 867.9 (4.4 ) 1,020.1 Selling, general and administrative expenses 8.7 22.7 47.6 — 79.0 Depreciation and amortization expenses — 7.5 120.7 — 128.2 Total costs and operating expenses 8.7 186.8 1,036.2 (4.4 ) 1,227.3 Operating income (loss) 101.2 (31.7 ) 90.1 (55.4 ) 104.2 Interest (income) expense, net - affiliate — (7.5 ) 7.5 — — Interest expense, net 4.9 0.1 56.9 — 61.9 Total interest expense (income), net 4.9 (7.4 ) 64.4 — 61.9 Gain on extinguishment of debt 0.4 — 20.0 — 20.4 Income (loss) before income tax (benefit) expense 95.9 (24.3 ) 5.7 (55.4 ) 21.9 Income tax (benefit) expense (26.5 ) (150.2 ) 95.1 — (81.6 ) Net income (loss) 122.4 125.9 (89.4 ) (55.4 ) 103.5 Less: Net loss attributable to noncontrolling interests — — (18.9 ) — (18.9 ) Net income (loss) attributable to SunCoke Energ y, Inc. $ 122.4 $ 125.9 $ (70.5 ) $ (55.4 ) $ 122.4 Comprehensive income (loss) $ 121.3 $ 125.3 $ (91.0 ) $ (53.2 ) $ 102.4 Less: Comprehensive loss attributable to noncontrolling interests — — (18.9 ) — (18.9 ) Comprehensive income (loss) attributable to SunCoke Energ y, Inc. $ 121.3 $ 125.3 $ (72.1 ) $ (53.2 ) $ 121.3 SunCoke Energy, Inc. Condensed Consolidating Statement of Income Years Ended December 31, 2016 (Dollars in millions) Issuer Guarantor Non- Combining Total Revenues Sales and other operating revenue $ — $ 176.7 $ 1,050.5 $ (3.9 ) $ 1,223.3 Equity in earnings of subsidiaries 19.7 51.3 — (71.0 ) — Total revenues, net of equity in earnings of subsidiaries 19.7 228.0 1,050.5 (74.9 ) 1,223.3 Costs and operating expenses Cost of products sold and operating expenses — 130.7 779.1 (3.9 ) 905.9 Selling, general and administrative expenses 12.9 25.6 52.1 — 90.6 Depreciation and amortization expenses — 9.2 105.0 — 114.2 Loss on divestiture of business and impairments — — 14.7 — 14.7 Total costs and operating expenses 12.9 165.5 950.9 (3.9 ) 1,125.4 Operating income 6.8 62.5 99.6 (71.0 ) 97.9 Interest (income) expense, net - affiliate — (7.6 ) 7.6 — — Interest expense, net 6.0 0.3 48.5 — 54.8 Total interest expense (income), net 6.0 (7.3 ) 56.1 — 54.8 Gain on extinguishment of debt, net — — (25.0 ) — (25.0 ) Income before income tax (benefit) expense and loss (gain) from equity method investment 0.8 69.8 68.5 (71.0 ) 68.1 Income tax (benefit) expense (13.6 ) 38.7 (16.5 ) — 8.6 Net income 14.4 31.1 85.0 (71.0 ) 59.5 Less: Net income attributable to noncontrolling interests — — 45.1 — 45.1 Net income attributable to SunCoke Energy, Inc. $ 14.4 $ 31.1 $ 39.9 $ (71.0 ) $ 14.4 Comprehensive income $ 15.2 $ 30.8 $ 86.1 $ (71.8 ) $ 60.3 Less: Comprehensive income attributable to noncontrolling interests — — 45.1 — 45.1 Comprehensive income attributable to SunCoke Energy, Inc. $ 15.2 $ 30.8 $ 41.0 $ (71.8 ) $ 15.2
Condensed Consolidating Balance Sheet	SunCoke Energy, Inc. Condensed Consolidating Balance Sheet December 31, 2018 (Dollars in millions, except per share amounts) Issuer Guarantor Non- Combining Total Assets Cash and cash equivalents $ — $ 123.2 $ 22.5 $ — $ 145.7 Receivables — 13.3 62.1 — 75.4 Inventories — 10.6 99.8 — 110.4 Income tax receivable — — 96.1 (95.4 ) 0.7 Other current assets — 1.8 1.0 — 2.8 Advances to affiliates — 281.1 — (281.1 ) — Total current assets — 430.0 281.5 (376.5 ) 335.0 Notes receivable from affiliate — — 200.0 (200.0 ) — Properties, plants and equipment, net — 54.3 1,416.8 — 1,471.1 Goodwill — 3.4 73.5 — 76.9 Other intangibles assets, net — 1.1 155.7 — 156.8 Deferred income taxes 7.0 — — (7.0 ) — Deferred charges and other assets — 5.1 0.4 — 5.5 Total assets $ 7.0 $ 493.9 $ 2,127.9 $ (583.5 ) $ 2,045.3 Liabilities and Equity Advances from affiliate $ 167.3 $ — $ 113.8 $ (281.1 ) $ — Accounts payable — 14.7 100.3 — 115.0 Accrued liabilities 1.8 13.7 30.1 — 45.6 Deferred revenue — — 3.0 — 3.0 Current portion of long-term debt and financing 1.1 — 2.8 — 3.9 Interest payable 0.4 — 3.2 — 3.6 Income taxes payable 1.9 93.5 — (95.4 ) — Total current liabilities 172.5 121.9 253.2 (376.5 ) 171.1 Long term-debt and financing obligation 41.2 — 793.3 — 834.5 Payable to affiliate — 200.0 — (200.0 ) — Accrual for black lung benefits — 10.9 34.0 — 44.9 Retirement benefit liabilities — 12.2 13.0 — 25.2 Deferred income taxes — 194.9 66.8 (7.0 ) 254.7 Asset retirement obligations — — 14.6 — 14.6 Other deferred credits and liabilities 3.5 6.6 7.5 — 17.6 Total liabilities 217.2 546.5 1,182.4 (583.5 ) 1,362.6 Equity Preferred stock, $0.01 par value. Authorized 50,000,000 — — — — — Common stock, $0.01 par value. Authorized 0.7 — — — 0.7 Treasury stock, 7,477,657 shares at December 31, 2018 (140.7 ) — — (140.7 ) Additional paid-in capital 488.9 61.0 612.8 (673.9 ) 488.8 Accumulated other comprehensive loss (13.1 ) (2.0 ) (11.1 ) 13.1 (13.1 ) Retained earnings 127.5 526.1 124.2 (650.4 ) 127.4 Equity investment eliminations (673.5 ) (637.7 ) — 1,311.2 — Total SunCoke Energy, Inc. stockholders’ equity (210.2 ) (52.6 ) 725.9 — 463.1 Noncontrolling interests — — 219.6 — 219.6 Total equity (210.2 ) (52.6 ) 945.5 — 682.7 Total liabilities and equity $ 7.0 $ 493.9 $ 2,127.9 $ (583.5 ) $ 2,045.3 SunCoke Energy, Inc. Condensed Consolidating Balance Sheet December 31, 2017 (Dollars in millions, except per share amounts) Issuer Guarantor Non- Combining Total Assets Cash and cash equivalents $ — $ 103.6 $ 16.6 $ — $ 120.2 Receivables — 17.1 51.4 — 68.5 Inventories — 9.1 101.9 — 111.0 Income taxes receivable — — 88.1 (83.3 ) 4.8 Other current assets — 4.6 2.1 — 6.7 Advances to affiliate — 245.8 — (245.8 ) — Total current assets — 380.2 260.1 (329.1 ) 311.2 Notes receivable from affiliate — 89.0 300.0 (389.0 ) — Properties, plants and equipment, net — 59.8 1,441.5 — 1,501.3 Goodwill — 3.4 73.5 — 76.9 Other intangible assets, net — 1.7 166.2 — 167.9 Deferred income taxes 7.1 — — (7.1 ) — Deferred charges and other assets — 2.3 0.5 — 2.8 Total assets $ 7.1 $ 536.4 $ 2,241.8 $ (725.2 ) $ 2,060.1 Liabilities and Equity Advances from affiliate $ 162.2 $ — $ 83.6 $ (245.8 ) $ — Accounts payable — 16.4 99.1 — 115.5 Accrued liabilities 1.5 19.7 32.0 — 53.2 Deferred Revenue — — 1.7 — 1.7 Current portion of long-term debt and financing obligation — — 2.6 — 2.6 Interest payable 1.4 — 4.0 — 5.4 Income taxes payable 1.9 81.4 — (83.3 ) — Total current liabilities 167.0 117.5 223.0 (329.1 ) 178.4 Long-term debt and financing obligation 42.7 — 818.4 — 861.1 Payable to affiliate — 300.0 89.0 (389.0 ) — Accrual for black lung benefits — 11.8 33.1 — 44.9 Retirement benefit liabilities — 13.7 14.5 — 28.2 Deferred income taxes — 193.8 71.1 (7.1 ) 257.8 Asset retirement obligations — — 14.0 — 14.0 Other deferred credits and liabilities 3.7 6.4 6.0 — 16.1 Total liabilities 213.4 643.2 1,269.1 (725.2 ) 1,400.5 Equity Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued and outstanding shares at December 31, 2017 — — — — — Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,707,304 shares at December 31, 2017 0.7 — — — 0.7 Treasury stock, 7,477,657 shares at (140.7 ) — — — (140.7 ) Additional paid-in capital 486.2 141.0 641.9 (782.9 ) 486.2 Accumulated other comprehensive loss (21.2 ) (2.2 ) (19.0 ) 21.2 (21.2 ) Retained earnings 101.2 475.6 116.4 (592.0 ) 101.2 Equity investment eliminations (632.5 ) (721.2 ) — 1,353.7 — Total SunCoke Energy, Inc. stockholders’ equity (206.3 ) (106.8 ) 739.3 — 426.2 Noncontrolling interests — — 233.4 — 233.4 Total equity (206.3 ) (106.8 ) 972.7 — 659.6 Total liabilities and equity $ 7.1 $ 536.4 $ 2,241.8 $ (725.2 ) $ 2,060.1
Condensed Combining and Consolidating Statement of Cash Flows	SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows Years Ended December 31, 2018 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income (loss) $ 26.2 $ 50.4 $ 29.9 $ (59.5 ) $ 47.0 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Loss from equity method investment — — 5.4 — 5.4 Depreciation and amortization expense — 8.8 132.8 — 141.6 Deferred income tax (benefit) expense (0.2 ) 1.2 (4.4 ) — (3.4 ) Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.0 ) (1.4 ) — (2.4 ) Share-based compensation expense 3.1 — — — 3.1 Equity in loss of subsidiaries (34.3 ) (25.2 ) — 59.5 — Loss on extinguishment of debt 0.3 — — — 0.3 Changes in working capital pertaining to operating activities: Receivables — 3.8 (10.7 ) — (6.9 ) Inventories — (1.5 ) 2.1 — 0.6 Accounts payable — (1.6 ) 0.9 — (0.7 ) Accrued liabilities 0.4 (5.9 ) (1.8 ) — (7.3 ) Deferred revenue — — 1.3 — 1.3 Interest payable (1.0 ) — (0.8 ) — (1.8 ) Income taxes 0.3 12.2 (8.0 ) — 4.5 Other 0.3 (0.9 ) 5.1 — 4.5 Net cash (used in) provided by operating activities (4.9 ) 40.3 150.4 — 185.8 Cash Flows from Investing Activities: Capital expenditures — (2.8 ) (97.5 ) — (100.3 ) Sale of equity method investment — — 4.0 — 4.0 Other investing activities — — 0.5 — 0.5 Net cash used in investing activities — (2.8 ) (93.0 ) — (95.8 ) Cash Flows from Financing Activities: Proceeds from issuance of long-term debt 45.0 — — — 45.0 Repayment of long-term debt (45.7 ) — — — (45.7 ) Debt issuance costs (0.5 ) — — — (0.5 ) Proceeds from revolving facility — — 179.5 — 179.5 Repayment of revolving facility — — (204.5 ) — (204.5 ) Repayment of financing obligation — — (2.6 ) — (2.6 ) Cash distributions to noncontrolling interests — — (31.9 ) — (31.9 ) Acquisition of additional interest in the Partnership — (4.2 ) — — (4.2 ) Other financing activities 0.7 — (0.3 ) — 0.4 Net increase (decrease) in advances from affiliates 5.4 (13.7 ) 8.3 — — Net cash provided by (used in) financing activities 4.9 (17.9 ) (51.5 ) — (64.5 ) Net increase in cash, cash equivalents and restricted cash — 19.6 5.9 — 25.5 Cash, cash equivalents and restricted cash at beginning of year — 103.6 16.6 — 120.2 Cash, cash equivalents and restricted cash at end of year $ — $ 123.2 $ 22.5 $ — $ 145.7 SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows Years Ended December 31, 2017 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income (loss) $ 122.4 $ 125.9 $ (89.4 ) $ (55.4 ) $ 103.5 Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities: Depreciation and amortization expense — 7.5 120.7 — 128.2 Deferred income tax (benefit) expense (22.8 ) (170.1 ) 105.7 — (87.2 ) Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.0 ) (0.8 ) — (1.8 ) Share-based compensation expense 4.7 — 0.1 — 4.8 Equity in (loss) earnings of subsidiaries (109.9 ) 54.5 — 55.4 — Loss on extinguishment of debt 0.4 — 20.0 — 20.4 Changes in working capital pertaining to operating activities (net of the effects of divestiture): Receivables — (4.9 ) (2.9 ) — (7.8 ) Inventories — (0.1 ) (18.4 ) — (18.5 ) Accounts payable — 3.0 8.7 — 11.7 Accrued liabilities (0.2 ) (1.3 ) 4.1 — 2.6 Deferred revenue — — (0.8 ) — (0.8 ) Interest payable (0.1 ) — (10.7 ) — (10.8 ) Income taxes (2.7 ) 16.3 (13.8 ) — (0.2 ) Other 1.3 — 3.1 — 4.4 Net cash (used in) provided by operating activities (6.9 ) 29.8 125.6 — 148.5 Cash Flows from Investing Activities: Capital expenditures — (4.1 ) (71.5 ) — (75.6 ) Return of Brazilian investment — — 20.5 — 20.5 Net cash used in investing activities — (4.1 ) (51.0 ) — (55.1 ) Cash Flows from Financing Activities: Proceeds from issuance of long-term debt — — 693.7 — 693.7 Repayment of long-term debt — — (644.9 ) — (644.9 ) Debt issuance costs (1.6 ) — (15.8 ) — (17.4 ) Proceeds from revolving facility — — 350.0 — 350.0 Repayment of revolving facility — — (392.0 ) — (392.0 ) Repayment of financing obligation — — (2.5 ) — (2.5 ) Cash distributions to noncontrolling interests — — (47.0 ) — (47.0 ) Acquisition of additional interest in the Partnership — (48.7 ) — — (48.7 ) Other financing activities 1.1 — — — 1.1 Net increase (decrease) in advances from affiliates 7.4 66.9 (74.3 ) — — Net cash provided by (used in) financing activities 6.9 18.2 (132.8 ) — (107.7 ) Net increase (decrease) in cash, cash equivalents and restricted cash — 43.9 (58.2 ) — (14.3 ) Cash, cash equivalents and restricted cash at beginning of year — 59.7 74.8 — 134.5 Cash, cash equivalents and restricted cash at end of year $ — $ 103.6 $ 16.6 $ — $ 120.2 SunCoke Energy, Inc. Condensed Consolidating Statement of Cash Flows December 31, 2016 (Dollars in millions) Issuer Guarantor Non- Combining Total Cash Flows from Operating Activities: Net income $ 14.4 $ 31.1 $ 85.0 $ (71.0 ) $ 59.5 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Depreciation and amortization expense — 9.2 105.0 — 114.2 Deferred income tax (benefit) expense (16.6 ) 8.7 11.0 — 3.1 Gain on curtailment and payments in excess of expense for postretirement plan benefits — (1.5 ) (1.1 ) — (2.6 ) Share-based compensation expense 6.5 — — — 6.5 Equity in loss of subsidiaries (19.7 ) (51.3 ) — 71.0 — Gain on extinguishment of debt — — (25.0 ) — (25.0 ) Loss on divestiture of business and impairments — — 14.7 — 14.7 Changes in working capital pertaining to operating activities (net of acquisitions): Receivables — (4.3 ) 8.0 — 3.7 Inventories — (3.7 ) 33.1 — 29.4 Accounts payable — 4.6 (5.4 ) — (0.8 ) Accrued liabilities 1.5 4.8 0.5 — 6.8 Deferred revenue — — 0.4 — 0.4 Interest payable 0.1 — (2.8 ) — (2.7 ) Income taxes (6.9 ) 28.2 (14.3 ) — 7.0 Other 2.5 8.9 (6.5 ) — 4.9 Net cash (used in) provided by operating activities (18.2 ) 34.7 202.6 — 219.1 Cash Flows from Investing Activities: Capital expenditures — (5.7 ) (58.0 ) — (63.7 ) Return of Brazilian investment — — 20.5 — 20.5 Divestiture of coal business — — (12.8 ) — (12.8 ) Other investing activities — — 2.1 — 2.1 Net cash used in investing activities — (5.7 ) (48.2 ) — (53.9 ) Cash Flows from Financing Activities: Repayment of long-term debt — — (66.1 ) — (66.1 ) Debt issuance costs — — (0.2 ) — (0.2 ) Proceeds from revolving facility — — 28.0 — 28.0 Repayment of revolving facility (60.4 ) — (38.0 ) — (98.4 ) Proceeds from financing obligation — — 16.2 — 16.2 Repayment of financing obligation — — (1.0 ) — (1.0 ) Cash distributions to noncontrolling interests — — (49.4 ) — (49.4 ) Other financing activities (0.3 ) (1.1 ) — — (1.4 ) Net increase (decrease) in advances from affiliates 78.9 (38.8 ) (40.1 ) — — Net cash provided by (used in) financing activities 18.2 (39.9 ) (150.6 ) — (172.3 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (10.9 ) 3.8 — (7.1 ) Cash, cash equivalents and restricted cash at beginning of year — 70.6 71.0 — 141.6 Cash, cash equivalents and restricted cash at end of year $ — $ 59.7 $ 74.8 $ — $ 134.5

General and Basis of Presenta_2

General and Basis of Presentation (Details) $ in Millions	Jun. 27, 2018USD ($)	Apr. 30, 2016USD ($)	Dec. 31, 2017	Dec. 31, 2018USD ($)Cokemaking_facilityT	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Feb. 05, 2019
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Coke production experience, more than				55 years
Period that Suncoke constructed the only greenfield cokemaking facilities in the US				30 years
Sale of equity method investment				$ 4	$ 0	$ 0
Recognition of accumulated currency translation loss upon sale of equity method investment				9	0	0
Transaction costs				0.4	0	0
Loss from equity method investment				5.4	0	0
Divestiture of coal business				$ 0	$ 0	12.8
SunCoke Energy Partners, L.P. | Subsequent Event
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Common Stock, Conversion Per Share							1.40
Indiana Harbor
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Ownership percentage (as a percent)				14.80%
SunCoke Energy Partners, L.P.
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Ownership interest of general partnership (as a percent)				2.00%
Interest in partnership (as a percent)			60.40%
VISA SunCoke Limited
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Ownership percentage (as a percent)	49.00%
Public Unitholders
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Ownership percentage held by public unitholders				37.60%
VISA SunCoke Limited
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Sale of equity method investment	$ 4
Recognition of accumulated currency translation loss upon sale of equity method investment	$ 9
Transaction costs				$ 0.4
Loss from equity method investment				$ 5.4
Disposal Group, Held-for-sale, Not Discontinued Operations | Remaining Coal Mining Assets, Mineral Leases, Real Estate, and a Substantial Portion of Mining Reclamation Obligations | Coal Mining
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Divestiture of coal business		$ 12.8
Gain (Loss) on Divestiture of Business | Disposal Group, Held-for-sale, Not Discontinued Operations | Remaining Coal Mining Assets, Mineral Leases, Real Estate, and a Substantial Portion of Mining Reclamation Obligations | Coal Mining
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Gain (loss) on divestiture						$ (14.7)
United States
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Number of facilities | Cokemaking_facility				5
Cokemaking capacity (in tons) | T				4,200,000
Brazil
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Number of facilities | Cokemaking_facility				1
Cokemaking capacity (in tons) | T				1,700,000
Convent, Louisiana, East Chicago, Indiana, West Virginia
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Coal handling capacity (in tons), more than | T				40,000,000
Coal storage capacity (in tons) | T				3,000,000

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)Employee	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Nov. 28, 2016USD ($)
Revenue Recognition
Contingent rentals as a percent of combined sales, less than	10.00%	10.00%	10.00%
Property, Plant and Equipment
Interest costs capitalized	$ 3.2	$ 1.1	$ 5
Investment in Brazilian Cokemaking Operations
Cash at closing	0	20.5	20.5
Incremental licensing fee per year	$ 5.1
Labor Concentrations
Number of employees | Employee	895
Percentage of domestic employees	3.00%
Vitoria, Brazil
Labor Concentrations
Number of employees | Employee	285
Cokemaking Operations
Labor Concentrations
Percentage of domestic employees	40.00%
ArcelorMittal Brazil
Investment in Brazilian Cokemaking Operations
Cash at closing		20.5	$ 20.5
Investment interest		$ 0.2
ArcelorMittal Brazil | Brazil Investment
Investment in Brazilian Cokemaking Operations
Consideration transferred				$ 41
Coke and energy plant, machinery and equipment | Minimum
Property, Plant and Equipment
Useful life	25 years
Coke and energy plant, machinery and equipment | Maximum
Property, Plant and Equipment
Useful life	30 years
Logistics plant, machinery and equipment | Minimum
Property, Plant and Equipment
Useful life	15 years
Logistics plant, machinery and equipment | Maximum
Property, Plant and Equipment
Useful life	35 years

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Accounting Pronouncements (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets		$ 2,060,100,000			$ 2,045,300,000
Liabilities		1,400,500,000			1,362,600,000
ASU 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash		0			$ 0
ASU 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Expense		1,300,000	$ 1,300,000
ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax adjustments	$ 1,100,000	$ 1,100,000
AS 2016-02 | Minimum | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets				$ 5,000,000
Liabilities				5,000,000
AS 2016-02 | Maximum | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets				10,000,000
Liabilities				$ 10,000,000

Acquisition of Noncontrolling_3

Acquisition of Noncontrolling Interest (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsidiary, Sale of Stock [Line Items]
Cash paid									$ 4,200,000	$ 48,700,000	$ 0
Decrease in noncontrolling interest									4,200,000	48,700,000
Decrease in additional paid-in capital									1,200,000	12,000,000
Deferred tax adjustment									300,000	7,100,000
Change in Ownership Interest
Net income attributable to SunCoke Energy, Inc	$ 1,800,000	$ 11,500,000	$ 4,200,000	$ 8,700,000	$ 134,000,000	$ 11,600,000	$ (24,200,000)	$ 1,000,000	26,200,000	122,400,000	$ 14,400,000
Decrease in SunCoke Energy, Inc. equity for the purchase of additional interest in the Partnership									(1,200,000)	(12,000,000)
Changes from net income attributable to SunCoke Energy, Inc and transfers to noncontrolling interest									25,000,000	110,400,000
Public Unit Purchase Program
Subsidiary, Sale of Stock [Line Items]
Authorized purchase amount					$ 100,000,000					$ 100,000,000
Remaining balance	$ 47,100,000								$ 47,100,000
Units purchased (in shares)									231,171	2,853,032
Cash paid									$ 4,200,000	$ 48,700,000
Decrease in noncontrolling interest									2,700,000	29,600,000
Decrease in additional paid-in capital									1,200,000	12,000,000
Deferred tax adjustment									300,000	7,100,000
Change in Ownership Interest
Decrease in SunCoke Energy, Inc. equity for the purchase of additional interest in the Partnership									$ (1,200,000)	$ (12,000,000)

Customer Concentrations (Narrat

Customer Concentrations (Narrative) (Details) - Customer Concentration Risk T in Millions	12 Months Ended
	Dec. 31, 2018CustomerT
Concentration Risk [Line Items]
Quantity of coke sold to three primary customers (in tons) | T	4
Number of primary customers in U.S	3
Accounts Receivable
Concentration Risk [Line Items]
Number of primary customers in U.S	3

Customer Concentrations (Sales

Customer Concentrations (Sales and Receivables to Significant Customers) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Sales and other operating revenue	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
AM USA and ArcelorMittal Brazil | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Sales and other operating revenue									$ 735.8	$ 678.2	$ 596.6
Percent of Company sales and other operating revenue									50.70%	50.90%	48.80%
AM USA and ArcelorMittal Brazil | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Accounts receivable due	34.3				25.7				$ 34.3	$ 25.7
AK Steel | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Sales and other operating revenue									$ 377.9	$ 331.3	$ 350
Percent of Company sales and other operating revenue									26.00%	24.90%	28.60%
AK Steel | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Accounts receivable due	25.3				13.2				$ 25.3	$ 13.2
U.S. Steel | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Sales and other operating revenue									$ 206.8	$ 214.1	$ 185.3
Percent of Company sales and other operating revenue									14.30%	16.10%	15.10%
U.S. Steel | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Accounts receivable due	5.2				5.6				$ 5.2	$ 5.6
Foresight and Murray | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Sales and other operating revenue									$ 62.5	$ 57.8	$ 53.5
Percent of Company sales and other operating revenue									4.30%	4.30%	4.40%
Foresight and Murray | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Accounts receivable due	3.2				$ 9.7				$ 3.2	$ 9.7
Foresight and Murray | Accounts Receivable | Customer Concentration Risk | Logistics
Concentration Risk [Line Items]
Accounts receivable due	$ 0								$ 0

Income Taxes (Components of Inc

Income Taxes (Components of Income From Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
The components of income before income tax expense
Domestic	$ 39.3	$ 4.3	$ 52.5
Foreign	17.7	17.6	15.6
Total	$ 57	$ 21.9	$ 68.1

Income Taxes (Components of I_2

Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current tax expense:
U.S. federal	$ 1.4	$ 1.7	$ 2.7
State	2.1	(1)	(2.2)
Foreign	4.5	4.9	5
Total current tax expense	8	5.6	5.5
Deferred tax expense:
U.S. federal	(3.1)	(99.7)	(1.5)
State	(0.3)	12.5	4.6
Total deferred tax (benefit) expense	(3.4)	(87.2)	3.1
Income tax expense	$ 4.6	$ (81.6)	$ 8.6

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Income Tax Expense to US Statutory Rate) (Details) - USD ($)	3 Months Ended			12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of income tax expense
Income tax expense at U.S. statutory rate				$ 12,000,000	$ 7,700,000	$ 23,800,000
Impact of Final Regulations				(1,400,000)	64,200,000	0
Provisional net income tax benefit		$ 154,700,000		4,800,000	154,700,000	0
Income attributable to noncontrolling interests in partnerships				(3,900,000)	(5,400,000)	(15,600,000)
State and other income taxes, net of federal income tax effects				1,600,000	2,000,000	1,100,000
Change in valuation allowance				700,000	3,900,000	400,000
Other				400,000	700,000	(1,100,000)
Income tax expense (benefit)				$ 4,600,000	$ (81,600,000)	$ 8,600,000
Reconciliation of income tax expense (as a percent)
Income tax expense at U.S. statutory rate				21.00%	35.00%	35.00%
Impact of Final Regulations				(2.50%)	293.20%	0.00%
Impact of Tax Legislation				(8.40%)	(706.40%)	0.00%
Income attributable to noncontrolling interests in partnerships				(6.80%)	(24.70%)	(23.00%)
State and other income taxes, net of federal income tax effects				2.80%	9.10%	1.70%
Change in valuation allowance				1.20%	17.80%	0.60%
Other				0.70%	3.20%	(1.60%)
Total effective income tax expense				8.00%	(372.80%)	12.70%
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred income tax (benefit) expense				$ (3,400,000)	$ (87,200,000)	$ 3,100,000
Net deferred tax liability		257,800,000		254,700,000	257,800,000
Provisional net income tax benefit		154,700,000		4,800,000	154,700,000	$ 0
Remeasurement of deferred income tax liabilities and assets					169,000,000
Provisional income tax expense (benefit)				9,900,000	14,300,000
Valuation allowance					19,000,000
Benefit from foreign tax credits	$ (4,800,000)
Income tax expense attributable to noncontrolling interests				0
Suncoke Inc
Reconciliation of income tax expense
Provisional net income tax benefit		125,000,000			125,000,000
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provisional net income tax benefit		125,000,000			125,000,000
IRS
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred income tax (benefit) expense				3,600,000	148,600,000
Net deferred tax liability		$ 84,400,000			84,400,000
Deferred tax expense			$ 64,200,000	$ 1,400,000	$ 64,200,000

Income Taxes (Components of Net

Income Taxes (Components of Net Deferred Tax Liability) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Retirement benefit liabilities	$ 6.4	$ 7.1
Black lung benefit liabilities	11.3	11.6
Share-based compensation	6.4	6.1
Federal tax credit carryforward	21.5	23.2
Foreign tax credit carryforward	15.9	19
Federal net operating loss	0	2.5
Section 163(j) interest limitation carryforward	1.8	0
State tax credit carryforward, net of federal income tax effects	2.4	4
State net operating loss carryforward, net of federal income tax effects	13.5	13.9
Other liabilities not yet deductible	4.9	4.3
Total deferred tax assets	84.1	91.7
Less valuation allowance	(20.7)	(26.2)
Deferred tax asset, net	63.4	65.5
Deferred tax liabilities:
Properties, plants and equipment	(111.5)	(114.9)
Investment in partnerships	(206.6)	(208.4)
Total deferred tax liabilities	(318.1)	(323.3)
Net deferred tax liability	(254.7)	(257.8)
Provisional income tax expense (benefit)	$ 9.9	$ 14.3

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
State and foreign income tax returns subject to examination period (in years)	3 years
State and foreign income tax returns subject to examination period maximum (in years)	5 years
Period amended federal returns remain subject to examination	1 year
Uncertain tax positions	$ 0	$ 0
Interest and penalties	$ 0	$ 0	$ 0

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Components of inventories
Coal	$ 59.9	$ 61.4
Coke	8.6	12.3
Materials, supplies and other	41.9	37.3
Total inventories	$ 110.4	$ 111

Properties, Plants, and Equip_2

Properties, Plants, and Equipment, Net (Components) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gross investment, at cost	$ 2,326.9	$ 2,234.5
Less: Accumulated depreciation	(855.8)	(733.2)
Total properties, plants and equipment, net	1,471.1	1,501.3
Coke and energy plant, machinery and equipment
Property, Plant and Equipment [Line Items]
Gross investment, at cost	1,876.3	1,812
Less: Accumulated depreciation	(554.1)	(475.8)
Logistics plant, machinery and equipment
Property, Plant and Equipment [Line Items]
Gross investment, at cost	218.3	216.2
Land and land improvements
Property, Plant and Equipment [Line Items]
Gross investment, at cost	119.7	118.7
Construction-in-progress
Property, Plant and Equipment [Line Items]
Gross investment, at cost	72.7	51.9
Other
Property, Plant and Equipment [Line Items]
Gross investment, at cost	$ 39.9	$ 35.7

Properties, Plants, and Equip_3

Properties, Plants, and Equipment, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ 855.8	$ 733.2
Coke and energy plant, machinery and equipment
Property, Plant and Equipment [Line Items]
Coke and energy plant, machinery and equipment	1,416.2	1,337.3
Accumulated depreciation	$ 554.1	$ 475.8

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 76.9	$ 76.9
Domestic Coke
Goodwill [Line Items]
Goodwill	3.4	3.4
Logistics
Goodwill [Line Items]
Goodwill	$ 73.5	$ 73.5

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details) $ in Millions	Oct. 01, 2016	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Oct. 01, 2017
Goodwill [Line Items]
Total amortization expense		$ 11.1	$ 11.1	$ 11.2
Permits
Goodwill [Line Items]
Useful life		24 years
Permits | Convent Marine Terminal
Goodwill [Line Items]
Useful life		27 years
Remaining renewal term		2 years 4 months 24 days
Logistics
Goodwill [Line Items]
Fair value of reporting unit in excess of carrying value, percent					30.00%
Change in discount rate that would not impact goodwill impairment test	1.00%
Logistics | Discount Rate
Goodwill [Line Items]
Discount rate on discounted cash flow analysis					0.14

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Gross and Net Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 200.6	$ 200.6
Accumulated Amortization	43.8	32.7
Total	$ 156.8	167.9
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization (in years)	4 years
Gross Carrying Amount	$ 31.7	31.7
Accumulated Amortization	17.7	13.8
Total	$ 14	17.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization (in years)	13 years
Gross Carrying Amount	$ 28.7	28.7
Accumulated Amortization	7.5	5.7
Total	$ 21.2	23
Permits
Finite-Lived Intangible Assets [Line Items]
Weighted - Average Remaining Amortization (in years)	24 years
Gross Carrying Amount	$ 139	139
Accumulated Amortization	17.4	12.2
Total	121.6	126.8
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1.2	1.2
Accumulated Amortization	1.2	1
Total	$ 0	$ 0.2

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,019	$ 10.9
2,020	10.7
2,021	10.3
2,022	10.3
2,023	7
Thereafter	107.6
Total	$ 156.8	$ 167.9

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of changes in the asset retirement obligation
Beginning Balance	$ 14	$ 13.9
Liabilities settled	(0.4)	(0.7)
Accretion expense	0.9	1
Revisions in estimated cash flows	0.1	(0.2)
Ending Balance	$ 14.6	$ 14

Retirement Benefits Plans (Narr

Retirement Benefits Plans (Narrative) (Details) - USD ($) $ in Millions	Jan. 01, 2011	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Company's pretax income and the aggregate compensation levels of participating employees		$ 6.5	$ 6.4	$ 5.6
Postretirement benefit plans
Defined Benefit Plan Disclosure [Line Items]
Years of service, less than	10 years
Health care cost trend assumption increased health care cost trend rates (as a percent)		6.50%	6.50%
Health care cost trend assumption increased health care cost trend rates (as a percent)		5.00%

Retirement Benefits Plans (Post

Retirement Benefits Plans (Postretirement Benefit Plans (Benefit) Expense Components) (Details) - Postretirement benefit plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Interest cost on benefit obligations	$ 1	$ 1.1	$ 1.3
Amortization of:
Actuarial losses	0.6	0.9	0.7
Prior service benefit	(0.7)	(0.7)	(0.7)
Total expense	$ 0.9	$ 1.3	$ 1.3

Retirement Benefits Plans (Assu

Retirement Benefits Plans (Assumptions Used to Determine Defined Benefit Plan and Postretirement Benefit Plans Expense (Benefit) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Postretirement benefit plans
Defined Benefit Plan Disclosure [Line Items]
Discount Rate (as a percent)	3.35%	3.65%	3.80%

Retirement Benefits Plans (Amou

Retirement Benefits Plans (Amounts Recognized as Components of Other Comprehensive (Loss) Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement benefit plan funded status adjustments:
Actuarial gains (losses)	$ 0.1	$ (0.2)	$ 0
Total	(0.6)	0.8	0.2
Postretirement benefit plans
Reclassifications to earnings of:
Actuarial loss amortization	0.6	0.9	0.7
Prior service benefit amortization	(0.7)	(0.7)	(0.7)
Retirement benefit plan funded status adjustments:
Actuarial gains (losses)	0.8	(1.1)	(1.8)
Prior service (cost) benefit	0	0	1.5
Total	$ 0.7	$ (0.9)	$ (0.3)

Retirement Benefits Plans (Comp

Retirement Benefits Plans (Components of the Changes in Benefit Obligations and Fair Value of Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in Benefit Obligation
Current portion of retirement liabilities classified in accrued liabilities	$ 3	$ 3.1
Postretirement benefit plans
Change in Benefit Obligation
Benefit obligations at beginning of year	31.3	32.3
Interest cost	1	1.1	$ 1.3
Actuarial (gain)/loss	(0.8)	1.1
Benefits paid	(3.3)	(3.2)
Benefit obligations at end of year	28.2	31.3	32.3
Prior service (cost) benefit	$ 0	$ 0	$ 1.5

Retirement Benefits Plans (Cumu

Retirement Benefits Plans (Cumulative Amounts Not Yet Recognized in Net Income) (Details) - Postretirement benefit plans - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Cumulative amounts not yet recognized in net income:
Actuarial losses	$ 10.4	$ 11.8
Prior service benefits	(2.6)	(3.4)
Accumulated other comprehensive loss (before related tax benefit)	$ 7.8	$ 8.4

Retirement Benefits Plans (Expe

Retirement Benefits Plans (Expected Benefit Payments) (Details) - Postretirement benefit plans $ in Millions	Dec. 31, 2018USD ($)
Regulatory Liabilities [Line Items]
2,019	$ 3
2,020	2.9
2,021	2.8
2,022	2.6
2,023	2.4
2024 through 2028	$ 9.5

Retirement Benefits Plans (Disc

Retirement Benefits Plans (Discount Rate) (Details)	Dec. 31, 2018	Dec. 31, 2017
Postretirement benefit plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	4.00%	3.35%

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Accrued benefits	$ 21.2	$ 21.3
Current portion of postretirement benefit obligation	3	3.1
Other taxes payable	9.1	10.5
Current portion of black lung liability	4.5	5.4
Accrued legal	4.2	5.6
Other	3.6	7.3
Total accrued liabilities	$ 45.6	$ 53.2

Debt and Financing Obligation_2

Debt and Financing Obligation (Schedule of Debt) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total borrowings	$ 859,000,000	$ 887,300,000
Original issue discount	(5,400,000)	(5,900,000)
Debt issuance costs	(15,200,000)	(17,700,000)
Total debt and financing obligation	838,400,000	863,700,000
Current portion of long-term debt and financing obligation	3,900,000	2,600,000
Long-term debt and financing obligation	834,500,000	861,100,000
7.500 percent senior notes, due 2025 (Partnership Notes) | Senior notes
Debt Instrument [Line Items]
Total borrowings	$ 700,000,000	700,000,000
Interest rate on senior notes (as a percent)	7.50%
7.625 percent senior notes, due 2019 (2019 Notes) | Senior notes
Debt Instrument [Line Items]
Total borrowings	$ 0	44,600,000
Interest rate on senior notes (as a percent)	7.625%
Term loan, due 2022 (Term Loan) | Line of Credit
Debt Instrument [Line Items]
Total borrowings	$ 43,900,000	0
SunCoke's revolving credit facility, due 2022 (Revolving Facility) | Line of Credit | Revolving credit facility
Debt Instrument [Line Items]
Total borrowings	0	0
Partnership's revolving credit facility, due 2022 (Partnership Revolver) | Line of Credit | Revolving credit facility
Debt Instrument [Line Items]
Total borrowings	105,000,000	130,000,000
5.82 percent financing obligation, due 2021 (Partnership Financing Obligation) | Financing Obligation
Debt Instrument [Line Items]
Total borrowings	$ 10,100,000	$ 12,700,000
Interest rate on senior notes (as a percent)	5.82%

Debt and Financing Obligation_3

Debt and Financing Obligation (Redemption of 2019 Notes) (Details)	Jan. 11, 2018USD ($)
Senior notes | 7.625 percent senior notes, due 2019 (2019 Notes)
Debt Instrument [Line Items]
Debt redemption	$ 46,100,000
Accrued interest	1,500,000
Amortization of debt issuance costs	300,000
Line of Credit | Term loan, due 2022 (Term Loan)
Debt Instrument [Line Items]
Principal amount of term loan	45,000,000
Line of credit debt issuance costs, gross	$ 300,000

Debt and Financing Obligation_4

Debt and Financing Obligation (Partnership Notes) (Details) - SunCoke Energy Partners, L.P. - Senior notes - 7.500 percent senior notes, due 2025 (Partnership Notes)	12 Months Ended
	Dec. 31, 2018
Debt Instrument [Line Items]
Change of control percent	101.00%
Before June 15, 2020
Debt Instrument [Line Items]
Redemption percentage	35.00%
Percentage of principal amount	107.50%
Anytime prior to June 15, 2020
Debt Instrument [Line Items]
Percentage of principal amount	100.00%

Debt and Financing Obligation_5

Debt and Financing Obligation (Partnership Financing Obligation) (Details) - Integral Equipment and Mobile Equipment - SunCoke Energy Partners, L.P. - Domestic Coke and Coal Logistics	12 Months Ended
	Dec. 31, 2018
Sale Leaseback Transaction [Line Items]
Initial lease period	60 months
Buyout option period	48 months
Percent of original lease equipment cost	34.50%

Debt and Financing Obligation_6

Debt and Financing Obligation (Revolving Facility) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Outstanding balance	$ 859,000,000	$ 887,300,000
Revolving credit facility | Line of Credit | SunCoke's revolving credit facility, due 2022 (Revolving Facility)
Debt Instrument [Line Items]
Capacity	100,000,000
Letters of credit outstanding under revolving facility	23,900,000
Outstanding balance	0	$ 0
Remaining borrowing capacity	$ 76,100,000
Unused capacity commitment fee	0.40%
Basis spread on variable rate	1.75%
The weighted-average interest rate for borrowings outstanding under credit agreement (as a percent)			2.80%

Debt and Financing Obligation_7

Debt and Financing Obligation (Partnership Revolver) (Details) - USD ($)	Nov. 03, 2015	Dec. 31, 2017	Dec. 31, 2018	May 31, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Outstanding balance		$ 887,300,000	$ 859,000,000
Partnership's revolving credit facility, due 2022 (Partnership Revolver) | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Outstanding balance		130,000,000	105,000,000
SunCoke Energy Partners, L.P. | Partnership's revolving credit facility, due 2022 (Partnership Revolver) | Line of Credit | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
SunCoke Energy Partners, L.P. | Partnership's revolving credit facility, due 2022 (Partnership Revolver) | Line of Credit | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
SunCoke Energy Partners, L.P. | Partnership's revolving credit facility, due 2022 (Partnership Revolver) | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Principal amount of term loan			$ 200,000,000	$ 285,000,000
Letters of credit outstanding under revolving facility		1,900,000
Outstanding balance		105,000,000
Remaining letters of credit agreement amount		$ 178,100,000
Unused capacity commitment fee		0.40%
The weighted-average interest rate for borrowings outstanding under credit agreement (as a percent)		3.80%	4.80%		3.30%

Debt and Financing Obligation_8

Debt and Financing Obligation (Covenants) (Details)	Jun. 30, 2020	Dec. 31, 2018USD ($)
Credit Agreement and Partner Revolver
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		3.25
Minimum consolidated interest coverage ratio		2.75
Credit Agreement and Partner Revolver | SunCoke Energy Partners, L.P.
Line of Credit Facility [Line Items]
Cross default covenant threshold		$ 35,000,000
Line of Credit | Revolving credit facility | Partnership's revolving credit facility, due 2022 (Partnership Revolver) | SunCoke Energy Partners, L.P.
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		4.5
Minimum consolidated interest coverage ratio		2.5
Line of Credit | Revolving credit facility | Partnership's revolving credit facility, due 2022 (Partnership Revolver) | SunCoke Energy Partners, L.P. | Forecast
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio	4

Debt and Financing Obligation_9

Debt and Financing Obligation (Schedule of Long-Term Debt Maturity) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
2,019	$ 3.9
2,020	10.7
2,021	3.4
2,022	141
2,023	0
2024-Thereafter	700
Total debt	$ 859	$ 887.3

Commitments and Contingent Li_3

Commitments and Contingent Liabilities (Lease Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Aggregate amount of future minimum annual rentals applicable to noncancelable operating leases and related subleases
2,019	$ 2
2,020	1.1
2,021	1
2,022	0.5
2,023	0.1
2024-Thereafter	0.7
Total	5.4
Rental expense, net of sublease income	$ 9.8	$ 7.3	$ 8.7

Commitments and Contingent Li_4

Commitments and Contingent Liabilities (Legal Matters) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2018	Jun. 30, 2019	Dec. 31, 2018	Dec. 31, 2014	Dec. 31, 2016
EPA | Accrued Liabilities
Loss Contingencies [Line Items]
Environmental remediation expense	$ 2.5
Haverhill and Granite City
Loss Contingencies [Line Items]
Estimate possible loss					$ 2.2
Expected spending on environmental liability	150		$ 150
Cost of capital projects			138	$ 7
Funds retained fro environmental remediation project	$ 119		$ 20
Haverhill and Granite City | Forecast
Loss Contingencies [Line Items]
Funds retained fro environmental remediation project		$ 5

Commitments and Contingent Li_5

Commitments and Contingent Liabilities (Black Lung Benefit Liabilities) (Details) - Black Lung Benefit $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)claim	Dec. 31, 2017USD ($)claim	Dec. 31, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	4.00%	3.30%
Active claims | claim	345	351
Estimated liability	$ 49.4	$ 50.3
Increase in black lung expense	1.1
Current portion of black lung liability	4.5	5.4
Payments	6.3	7.4	$ 7.8
Expense	$ 5.4	$ 7.5	$ 8.1

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Beginning balance	$ 659.6	$ 659.6	$ 639.9	$ 622.8
Other comprehensive loss before reclassifications		(1.4)	(0.5)
Amounts reclassified from accumulated other comprehensive loss		(0.1)	0.2
Retirement benefit plans funded status adjustment		0.6	(0.8)	(0.2)
Recognition of accumulated currency translation loss upon sale of equity method investment		9	0	0
Net current period other comprehensive loss		8.1	(1.1)
Ending balance		682.7	659.6	639.9
ASU 2018-02
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Cumulative effect from adoption of ASU 2018-02	(1.1)		(1.1)
Benefit Plans
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Beginning balance	(6.5)	(6.5)	(4.8)
Other comprehensive loss before reclassifications		0	0
Amounts reclassified from accumulated other comprehensive loss		(0.1)	0.2
Retirement benefit plans funded status adjustment		0.6	(0.8)
Recognition of accumulated currency translation loss upon sale of equity method investment		0
Net current period other comprehensive loss		0.5	(0.6)
Ending balance		(6)	(6.5)	(4.8)
Tax benefit associated with benefit plans		1.8	1.9
Benefit Plans | ASU 2018-02
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Cumulative effect from adoption of ASU 2018-02			(1.1)
Currency Translation Adjustments
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Beginning balance	(14.7)	(14.7)	(14.2)
Other comprehensive loss before reclassifications		(1.4)	(0.5)
Amounts reclassified from accumulated other comprehensive loss		0	0
Retirement benefit plans funded status adjustment		0	0
Recognition of accumulated currency translation loss upon sale of equity method investment		9
Net current period other comprehensive loss		7.6	(0.5)
Ending balance		(7.1)	(14.7)	(14.2)
Currency Translation Adjustments | ASU 2018-02
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Cumulative effect from adoption of ASU 2018-02			0
Accumulated Other Comprehensive Loss
Components of accumulated other comprehensive (loss) income (net of related income taxes)
Beginning balance	$ (21.2)	(21.2)	(19)	(19.8)
Retirement benefit plans funded status adjustment		0.6	(0.8)	(0.2)
Recognition of accumulated currency translation loss upon sale of equity method investment		9
Ending balance		$ (13.1)	$ (21.2)	$ (19)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss Reclassification Adjustments From AOCI (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Recognition of accumulated currency translation loss upon sale of equity method investment	$ (9,000,000)	$ 0	$ 0
Income tax cost (benefit)	0	0	0
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Recognition of accumulated currency translation loss upon sale of equity method investment	0
Total, net of tax	(8,900,000)	(200,000)	0
Actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of benefit plans to net income	(600,000)	(900,000)	(700,000)
Prior service benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of benefit plans to net income	$ 700,000	$ 700,000	$ 700,000

Share-Based Compensation (Equit

Share-Based Compensation (Equity Classified Awards Narrative) (Details)	1 Months Ended		12 Months Ended
	Dec. 31, 2017shares	Feb. 28, 2017shares	Dec. 31, 2018USD ($)Installment$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Feb. 14, 2018shares	Jul. 13, 2011shares
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of stock options exercised | $			$ 800,000	$ 300,000	$ 0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual installment in which stock option exercisable | Installment			3
Period from grant date for annual installment (in years)			1 year
Shares granted (shares)			32,128	22,628	0
Total fair value of non-option award units vested | $			$ 1,200,000	$ 2,300,000	$ 3,700,000
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares)	148,148	237,610	96,389	385,758
Performance Share Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			0.00%
Performance Share Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			200.00%
SunCoke LTPEP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issuable (in shares)						6,000,000	1,600,000
Common stock issuable pursuant to new awards (in shares)						1,500,000	7,500,000
SunCoke LTPEP | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual installment in which stock option exercisable | Installment			3
Period from grant date for annual installment (in years)			1 year
Expiration period			10 years
SunCoke LTPEP | Performance Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing common stock price (USD per share) | $ / shares				$ 14.78	$ 9.50
Number of trading days					15 days
Measurement period					3 years
SunCoke LTPEP | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement period			3 years
SunCoke LTPEP | Performance Share Units | Pre-tax return of capital for Coke and Coal Logistics businesses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing common stock price (USD per share) | $ / shares			$ 9
Number of trading days			15 days
Measurement period			3 years
Percent of award allocation			50.00%
SunCoke LTPEP | Performance Share Units | Pre-tax return of capital for coke business
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement period			3 years
SunCoke LTPEP | Performance Share Units | Minimum | Pre-tax return of capital for coke business
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage			50.00%
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			0.00%
SunCoke LTPEP | Performance Share Units | Maximum | Pre-tax return of capital for coke business
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage			150.00%
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			250.00%

Share-Based Compensation (Stock

Share-Based Compensation (Stock Option and Performance Share Units Grants) (Details) - $ / shares	1 Months Ended		12 Months Ended
	Mar. 31, 2016	Feb. 29, 2016	Dec. 31, 2018	Dec. 31, 2017
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price (in USD per share)			$ 10.49
SunCoke LTPEP | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)	90,925	95,001	78,447	157,196
Weighted average exercise price (in USD per share)	$ 6.03	$ 3.80	$ 10.49	$ 10.29
Weighted-average fair value stock option (in dollars per share)	$ 2.78	$ 1.71	$ 5.38	$ 5.32
SunCoke LTPEP | Performance Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)	90,925	58,448		80,595
Weighted average exercise price (in USD per share)	$ 6.03	$ 3.80		$ 9.85
Weighted-average fair value stock option (in dollars per share)	$ 2.42	$ 1.06		$ 5.17

Share-Based Compensation (Assum

Share-Based Compensation (Assumptions Used to Calculate Value of Stock Options) (Details) - Stock Options	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest rate	3.00%	2.00%	1.00%
Expected term	6 years	6 years	5 years
Volatility	52.00%	53.00%	52.00%
Dividend yield	0.00%	0.00%	0.00%

Share-Based Compensation (Summa

Share-Based Compensation (Summary of Stock Option Activity) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Number of Options (in shares)
Outstanding at the beginning of period (shares)	3,146,115
Granted (shares)	78,447
Exercised (shares)	(127,107)
Forfeited (shares)	(211,667)
Outstanding at end of period (shares)	2,885,788	3,146,115
Exercisable at end of period (shares)	2,546,059
Expected to vest at end of period (shares)	339,729
Weighted Average Exercise Price (in dollars per share)
Outstanding at beginning of period (in USD per share)	$ 15.31
Granted (in USD per share)	10.49
Exercised (in USD per share)	6.49
Forfeited (in USD per share)	17.07
Outstanding at end of period (in USD per share)	15.46	$ 15.31
Exercisable at end of period (in USD per share)	16.38
Expected to vest at end of period (in USD per share)	$ 8.59
Weighted Average Remaining Contractual Term (years)
Weighted average remaining contractual term (in years)	4 years 9 months 18 days	5 years 7 months 6 days
Exercisable at end of period	4 years 1 month 6 days
Expected to vest at end of period	8 years 2 months 12 days
Aggregate Intrinsic Value (millions)
Aggregate intrinsic value	$ 2.1	$ 2.8
Exercisable at end of period	0.4
Expected to vest at end of period	$ 0.9

Share-Based Compensation (Restr

Share-Based Compensation (Restricted Stock Units and Performance Share Units Granted) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended				12 Months Ended
	Dec. 31, 2017	Feb. 28, 2017	Mar. 31, 2016	Feb. 29, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares)					32,128	22,628	0
Weighted Average Grant-Date Fair Value (in USD per share)					$ 10.49	$ 9.85
Grant Date Fair Value					$ 0.3	$ 0.2
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares)	148,148	237,610			96,389	385,758
Weighted Average Grant-Date Fair Value (in USD per share)					$ 11.36	$ 11.61
Grant Date Fair Value					$ 1.1	$ 4.5
Performance Share Units | SunCoke LTPEP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Date Fair Value			$ 2	$ 1.2
Performance Share Units | SunCoke LTPEP | ROIC Portion
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)			67,167	105,210
Weighted-average fair value stock option (in dollars per share)			$ 10.51	$ 5.66
Performance Share Units | SunCoke LTPEP | TSR Portion
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)			201,500	105,210
Weighted-average fair value stock option (in dollars per share)			$ 6.35	$ 5.81
Maximum award value					$ 4.9

Share-Based Compensation (Sum_2

Share-Based Compensation (Summary of RSUs and PSUs Outstanding) (Details) - $ / shares	1 Months Ended		12 Months Ended
	Dec. 31, 2017	Feb. 28, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock Units (RSUs)
Number of Units
Outstanding at beginning of period (shares)			106,397
Granted (shares)			32,128	22,628	0
Vested (shares)			(87,131)
Forfeited (shares)			(4,181)
Outstanding at end of period (shares)	106,397		47,213	106,397
Weighted Average Grant- Date Fair Value (in dollars per share)
Outstanding at beginning of period (in USD per share)			$ 13.53
Granted (in USD per share)			10.49	$ 9.85
Vested (in USD per share)			14.27
Forfeited (in USD per share)			8.37
Outstanding at end of period (in USD per share)	$ 13.53		$ 10.29	$ 13.53
Performance Share Units
Number of Units
Outstanding at beginning of period (shares)			782,781
Granted (shares)	148,148	237,610	96,389	385,758
Vested (shares)			(1,710)
Forfeited (shares)			(125,085)
Outstanding at end of period (shares)	782,781		752,375	782,781
Weighted Average Grant- Date Fair Value (in dollars per share)
Outstanding at beginning of period (in USD per share)			$ 10.06
Granted (in USD per share)			11.36	$ 11.61
Vested (in USD per share)			16.90
Forfeited (in USD per share)			17.59
Outstanding at end of period (in USD per share)	$ 10.06		$ 8.86	$ 10.06

Share-Based Compensation (Liabi

Share-Based Compensation (Liability Classified Awards Narrative) (Details) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2017shares	Feb. 28, 2017shares	Dec. 31, 2018USD ($)Installment$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares
Restricted Stock Units Settled in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares) | shares			108,522	98,364	198,668
Number of annual installment in which stock option exercisable | Installment			3
Period from grant date for annual installment (in years)			1 year
Granted (in USD per share)			$ 10.71	$ 9.82	$ 3.82
Closing price (USD per share)			$ 8.55
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares) | shares	148,148	237,610	96,389	385,758
Granted (in USD per share)			$ 11.36	$ 11.61
Performance Share Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			200.00%
Suncoke LTCIP | Cash Incentive Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value award | $			$ 1	$ 0.7	$ 0.9
Percent of award allocation			50.00%
Measurement period			3 years	3 years
Closing common stock price (USD per share)				$ 9
Number of trading days				15 days
Suncoke LTCIP | Cash Incentive Award | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage adjustment of award determined by pre-tax return on capital (as a percent)			25000.00%	200.00%
SunCoke LTPEP | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement period			3 years

Share-Based Compensation (Compe

Share-Based Compensation (Compensation Expense and Unrecognized Compensation Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 0.5
Recognition Period	1 year 7 months 6 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 0.3
Recognition Period	1 year 8 months 12 days
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 2.6
Recognition Period	1 year 10 months 24 days
Restricted Stock Units Settled in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 0.7
Recognition Period	1 year 4 months 24 days
Suncoke LTCIP | Cash Incentive Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 0.9
Recognition Period	1 year 9 months 18 days
Selling, General and Administrative Expenses | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 0.5	$ 1.3	$ 2.1
Net of tax	0.4	0.8	1.3
Selling, General and Administrative Expenses | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	0.4	1.1	2.6
Net of tax	0.3	0.7	1.7
Selling, General and Administrative Expenses | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1.9	1.9	1.4
Net of tax	1.7	1.2	0.9
Selling, General and Administrative Expenses | Equity Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	2.8	4.3	6.1
Net of tax	2.4	2.7	3.9
Selling, General and Administrative Expenses | Restricted Stock Units Settled in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	0.8	1	0.7
Net of tax	0.6	0.6	0.5
Selling, General and Administrative Expenses | Suncoke LTCIP | Cash Incentive Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	0.9	0.2	0.1
Net of tax	0.7	0.1	0.1
Selling, General and Administrative Expenses | Suncoke LTCIP | Liability Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1.7	1.2	0.8
Net of tax	$ 1.3	$ 0.7	$ 0.6

Share-Based Compensation (Sum_3

Share-Based Compensation (Summary of Share-Based Compensation Expense Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation expense	$ 0.3	$ 0.5	$ 0.4

Earnings Per Share - Weighted A

Earnings Per Share - Weighted Average Number of Shares (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Weighted-average number of common shares outstanding-basic	64.7	64.3	64.2
Add: effect of dilutive share-based compensation awards	0.8	0.9	0.2
Weighted-average number of shares-diluted	65.5	65.2	64.4

Earnings Per Share - Antidiluti

Earnings Per Share - Antidilutive Shares Excluded From EPS Calculation (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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)	2.8	3	3.4
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)	2.7	2.9	3
Restricted Stock Units (RSUs)
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	0	0.2
Performance Share 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)	0.1	0.1	0.2

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	$ (2.5)	$ 1.7	$ 10.1
Cost of Products Sold and Operating Expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	2.5	1.7	$ 6.4
Level 1 | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents measured at fair value	3.2	5.5
Fair Value, Inputs, Level 3 | SunCoke Energy Partners, L.P. | Convent Marine Terminal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 5	$ 2.5		$ 3.7

Fair Value Measurements (Certai

Fair Value Measurements (Certain Financial Assets and Liabilities not Measured at Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair value of long-term debt	$ 822.8	$ 919.7
Outstanding balance	$ 859	$ 887.3

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Narrative (Details) T in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)T
Cokemaking
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of facility capacity	90.00%
Expected term of agreement	6 years
Logistics
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected term of agreement	5 years
Capacity (in tons)	13
Performance obligation amount | $	$ 305
Logistics | Foresight and Murray
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Capacity (in tons)	15
Logistics | Foresight and Murray | CMT
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Capacity (in tons)	10

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Deferred Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Change in Contract with Customer, Liability [Roll Forward]
Beginning balance at December 31, 2017 and 2016, respectively	$ 1.7	$ 2.5
Reclassification of the beginning contract liabilities to revenue, as a result of performance obligation satisfied	(1.4)	(2.1)
Billings in excess of services performed, not recognized as revenue	2.7	1.3
Ending balance at December 31, 2018 and 2017, respectively	$ 3	$ 1.7

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Disaggregated Sales and Other Operating Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
Cokemaking
Disaggregation of Revenue [Line Items]
Sales and other operating revenue									1,250.5	1,140.8	1,038.2
Energy
Disaggregation of Revenue [Line Items]
Sales and other operating revenue									49.7	53.2	54.3
Logistics
Disaggregation of Revenue [Line Items]
Sales and other operating revenue									101	89.7	82.9
Operating and licensing fees
Disaggregation of Revenue [Line Items]
Sales and other operating revenue									40.4	43.4	39.5
Other
Disaggregation of Revenue [Line Items]
Sales and other operating revenue									$ 9.3	$ 4.4	$ 8.4

Business Segment Information -

Business Segment Information - Narrative (Details)	12 Months Ended
	Dec. 31, 2018segment
Segment Reporting [Abstract]
Number of reportable segments	3

Business Segment Information _2

Business Segment Information - Segment Profit or Loss (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
Adjusted EBITDA									263.2	234.7	217
Depreciation and amortization expense									141.6	128.2	114.2
Capital expenditures									100.3	75.6	63.7
Domestic Coke | Service Life
Segment Reporting Information [Line Items]
Depreciation and amortization expense									$ 9.2
Additional depreciation per common share (USD per share)									$ 0.14
Corporate and Other
Segment Reporting Information [Line Items]
Sales and other operating revenues									$ 0	0	1.5
Adjusted EBITDA									(35.7)	(43.2)	(57)
Depreciation and amortization expense									1.4	0.5	4.7
Capital expenditures									0	2.4	1.7
Coal Mining
Segment Reporting Information [Line Items]
Adjusted EBITDA									(9.8)	(10.5)	(15)
Operating Segments | Domestic Coke
Segment Reporting Information [Line Items]
Sales and other operating revenues									1,308.3	1,195	1,097.6
Adjusted EBITDA									207.9	188.9	193.9
Depreciation and amortization expense									114.4	102.6	84
Capital expenditures									95.1	68.8	44.6
Operating Segments | Brazil Coke
Segment Reporting Information [Line Items]
Sales and other operating revenues									40.4	43.4	39.5
Adjusted EBITDA									18.4	18.2	16.2
Depreciation and amortization expense									0.7	0.7	0.7
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Sales and other operating revenues									102.2	93.1	84.7
Adjusted EBITDA									72.6	70.8	63.9
Depreciation and amortization expense									25.1	24.4	24.8
Capital expenditures									5.2	4.4	17.4
Elimination of intersegment sales
Segment Reporting Information [Line Items]
Sales and other operating revenues									(24.5)	(23.8)	(45.2)
Elimination of intersegment sales | Logistics
Segment Reporting Information [Line Items]
Sales and other operating revenues									24.5	23.8	23.2
Corporate and Other intersegment sales
Segment Reporting Information [Line Items]
Sales and other operating revenues									$ 0	$ 0	$ 22

Business Segment Information _3

Business Segment Information - Segment Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Segment assets, excluding income tax receivable	$ 2,044.6	$ 2,055.3
Tax assets	0.7	4.8
Total assets	2,045.3	2,060.1
Operating Segments | Domestic Coke
Segment Reporting Information [Line Items]
Segment assets, excluding income tax receivable	1,446.5	1,439.7
Operating Segments | Brazil Coke
Segment Reporting Information [Line Items]
Segment assets, excluding income tax receivable	15.1	10.9
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Segment assets, excluding income tax receivable	463	491.9
Corporate and Other
Segment Reporting Information [Line Items]
Segment assets, excluding income tax receivable	$ 120	$ 112.8

Business Segment Information _4

Business Segment Information - Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Net cash provided by operating activities									$ 185.8	$ 148.5	$ 219.1
Subtract:
Depreciation and amortization expense									141.6	128.2	114.2
Deferred income tax expense									(3.4)	(87.2)	3.1
Loss (gain) on extinguishment of debt, net							$ 20.2		0.3	20.4	(25)
Loss on divestiture of business									0	0	14.7
Loss from equity method investment									5.4	0	0
Changes in working capital and other									(5.1)	(16.4)	52.6
Net income	$ 5.5	$ 17.1	$ 11.4	$ 13	$ 173.9	$ 18.8	(31.5)	$ (57.7)	47	103.5	59.5
Add:
Depreciation and amortization expense									141.6	128.2	114.2
Interest expense, net									61.4	60.6	53.5
Loss (gain) on extinguishment of debt, net							$ 20.2		0.3	20.4	(25)
Income tax expense (benefit)									4.6	(81.6)	8.6
Contingent consideration adjustments									2.5	(1.7)	(10.1)
Transaction costs									0.4	0	0
Expiration of land deposits and write-off of costs related to potential new cokemaking facility									0	5.3	1.9
Non-cash reversal of acquired contractual obligation									0	0	(0.7)
Coal rationalization costs									0	0	0.4
Adjustment to unconsolidated affiliate earnings									5.4	0	0
Adjusted EBITDA									263.2	234.7	217
Subtract: Adjusted EBITDA attributable to noncontrolling interest									82	86.4	86.6
Adjusted EBITDA attributable to SunCoke Energy, Inc.									$ 181.2	$ 148.3	$ 130.4

Selected Quarterly Data (unau_3

Selected Quarterly Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information
Sales and other operating revenue	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
Gross profit	39.7	45.8	52.3	47	56.8	51.3	32.9	42.2
Net income	5.5	17.1	11.4	13	173.9	18.8	(31.5)	(57.7)	47	103.5	59.5
Less: Net income (loss) attributable to noncontrolling interests	3.7	5.6	7.2	4.3	39.9	7.2	(7.3)	(58.7)	20.8	(18.9)	45.1
Net income attributable to SunCoke Energy, Inc.	$ 1.8	$ 11.5	$ 4.2	$ 8.7	$ 134	$ 11.6	$ (24.2)	$ 1	$ 26.2	$ 122.4	$ 14.4
Earnings (loss) attributable to SunCoke Energy, Inc. per common share:
Basic (in dollars per share)	$ 0.03	$ 0.18	$ 0.06	$ 0.13	$ 2.08	$ 0.18	$ (0.38)	$ 0.02	$ 0.40	$ 1.90	$ 0.22
Diluted (in dollars per share)	$ 0.03	$ 0.18	$ 0.06	$ 0.13	$ 2.05	$ 0.18	$ (0.38)	$ 0.02	$ 0.40	$ 1.88	$ 0.22
Loss (gain) on extinguishment of debt, net							$ 20.2		$ 0.3	$ 20.4	$ (25)
Provisional net income tax benefit					$ 154.7				4.8	154.7	$ 0
IRS
Earnings (loss) attributable to SunCoke Energy, Inc. per common share:
Deferred tax expense								$ 64.2	$ 1.4	64.2
Suncoke Inc
Earnings (loss) attributable to SunCoke Energy, Inc. per common share:
Provisional net income tax benefit					125					125
SunCoke Energy Partners, L.P. | Logistics
Earnings (loss) attributable to SunCoke Energy, Inc. per common share:
Deferred revenue					$ 16.4					$ 16.4

Supplemental Condensed Combin_3

Supplemental Condensed Combining and Consolidating Financial Information -Narrative (Details)	Dec. 31, 2017
Condensed Financial Information Disclosure [Abstract]
Percentage of net assets	25.00%

Supplemental Condensed Combin_4

Supplemental Condensed Combining and Consolidating Financial Information - Condensed Consolidating Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Sales and other operating revenue	$ 368.9	$ 364.5	$ 367	$ 350.5	$ 359.6	$ 339	$ 323.2	$ 309.7	$ 1,450.9	$ 1,331.5	$ 1,223.3
Equity in earnings of subsidiaries									0	0	0
Total revenues									1,450.9	1,331.5	1,223.3
Costs and operating expenses
Cost of products sold and operating expenses									1,124.5	1,020.1	905.9
Selling, general and administrative expenses									66.1	79	90.6
Depreciation and amortization expense									141.6	128.2	114.2
Loss on divestiture of business									0	0	14.7
Total costs and operating expenses									1,332.2	1,227.3	1,125.4
Operating income									118.7	104.2	97.9
Interest (income) expense, net - affiliate									0	0	0
Interest expense (income), net									61.4	61.9	54.8
Total interest expense (income), net									61.4	61.9	54.8
Loss (gain) on extinguishment of debt							20.2		0.3	20.4	(25)
Income before income tax expense (benefit) and loss from equity method investment									57	21.9	68.1
Income tax expense (benefit)									4.6	(81.6)	8.6
Loss from equity method investment									5.4	0	0
Net income	5.5	17.1	11.4	13	173.9	18.8	(31.5)	(57.7)	47	103.5	59.5
Less: Net income (loss) attributable to noncontrolling interests	3.7	5.6	7.2	4.3	39.9	7.2	(7.3)	(58.7)	20.8	(18.9)	45.1
Net income attributable to SunCoke Energy, Inc.	$ 1.8	$ 11.5	$ 4.2	$ 8.7	$ 134	$ 11.6	$ (24.2)	$ 1	26.2	122.4	14.4
Comprehensive income									55.1	102.4	60.3
Less: Comprehensive income (loss) attributable to noncontrolling interests									20.8	(18.9)	45.1
Comprehensive income attributable to SunCoke Energy, Inc.									34.3	121.3	15.2
Issuer
Costs and operating expenses
Loss on divestiture of business											0
Loss from equity method investment									0
Guarantor Subsidiaries
Costs and operating expenses
Loss on divestiture of business											0
Loss from equity method investment									0
Non- Guarantor Subsidiaries
Costs and operating expenses
Loss on divestiture of business											14.7
Loss from equity method investment									5.4
Reportable Legal Entities | Issuer
Revenues
Sales and other operating revenue									0	0	0
Equity in earnings of subsidiaries									34.3	109.9	19.7
Total revenues									34.3	109.9	19.7
Costs and operating expenses
Cost of products sold and operating expenses									0	0	0
Selling, general and administrative expenses									6.5	8.7	12.9
Depreciation and amortization expense									0	0	0
Loss on divestiture of business											0
Total costs and operating expenses									6.5	8.7	12.9
Operating income									27.8	101.2	6.8
Interest (income) expense, net - affiliate									0	0	0
Interest expense (income), net									3.1	4.9	6
Total interest expense (income), net									3.1	4.9	6
Loss (gain) on extinguishment of debt									0.3	0.4	0
Income before income tax expense (benefit) and loss from equity method investment									24.4	95.9	0.8
Income tax expense (benefit)									(1.8)	(26.5)	(13.6)
Loss from equity method investment									0
Net income									26.2	122.4	14.4
Less: Net income (loss) attributable to noncontrolling interests									0	0	0
Net income attributable to SunCoke Energy, Inc.									26.2	122.4	14.4
Comprehensive income									34.3	121.3	15.2
Less: Comprehensive income (loss) attributable to noncontrolling interests									0	0	0
Comprehensive income attributable to SunCoke Energy, Inc.									34.3	121.3	15.2
Reportable Legal Entities | Guarantor Subsidiaries
Revenues
Sales and other operating revenue									216	209.6	176.7
Equity in earnings of subsidiaries									25.2	(54.5)	51.3
Total revenues									241.2	155.1	228
Costs and operating expenses
Cost of products sold and operating expenses									165.7	156.6	130.7
Selling, general and administrative expenses									11.8	22.7	25.6
Depreciation and amortization expense									8.8	7.5	9.2
Loss on divestiture of business											0
Total costs and operating expenses									186.3	186.8	165.5
Operating income									54.9	(31.7)	62.5
Interest (income) expense, net - affiliate									(6)	(7.5)	(7.6)
Interest expense (income), net									(1.6)	0.1	0.3
Total interest expense (income), net									(7.6)	(7.4)	(7.3)
Loss (gain) on extinguishment of debt									0	0	0
Income before income tax expense (benefit) and loss from equity method investment									62.5	(24.3)	69.8
Income tax expense (benefit)									12.1	(150.2)	38.7
Loss from equity method investment									0
Net income									50.4	125.9	31.1
Less: Net income (loss) attributable to noncontrolling interests									0	0	0
Net income attributable to SunCoke Energy, Inc.									50.4	125.9	31.1
Comprehensive income									50.6	125.3	30.8
Less: Comprehensive income (loss) attributable to noncontrolling interests									0	0	0
Comprehensive income attributable to SunCoke Energy, Inc.									50.6	125.3	30.8
Reportable Legal Entities | Non- Guarantor Subsidiaries
Revenues
Sales and other operating revenue									1,239.5	1,126.3	1,050.5
Equity in earnings of subsidiaries									0	0	0
Total revenues									1,239.5	1,126.3	1,050.5
Costs and operating expenses
Cost of products sold and operating expenses									963.4	867.9	779.1
Selling, general and administrative expenses									47.8	47.6	52.1
Depreciation and amortization expense									132.8	120.7	105
Loss on divestiture of business											14.7
Total costs and operating expenses									1,144	1,036.2	950.9
Operating income									95.5	90.1	99.6
Interest (income) expense, net - affiliate									6	7.5	7.6
Interest expense (income), net									59.9	56.9	48.5
Total interest expense (income), net									65.9	64.4	56.1
Loss (gain) on extinguishment of debt									0	20	(25)
Income before income tax expense (benefit) and loss from equity method investment									29.6	5.7	68.5
Income tax expense (benefit)									(5.7)	95.1	(16.5)
Loss from equity method investment									5.4
Net income									29.9	(89.4)	85
Less: Net income (loss) attributable to noncontrolling interests									20.8	(18.9)	45.1
Net income attributable to SunCoke Energy, Inc.									9.1	(70.5)	39.9
Comprehensive income									37.8	(91)	86.1
Less: Comprehensive income (loss) attributable to noncontrolling interests									20.8	(18.9)	45.1
Comprehensive income attributable to SunCoke Energy, Inc.									17	(72.1)	41
Combining and Consolidating Adjustments
Revenues
Sales and other operating revenue									(4.6)	(4.4)	(3.9)
Equity in earnings of subsidiaries									(59.5)	(55.4)	(71)
Total revenues									(64.1)	(59.8)	(74.9)
Costs and operating expenses
Cost of products sold and operating expenses									(4.6)	(4.4)	(3.9)
Selling, general and administrative expenses									0	0	0
Depreciation and amortization expense									0	0	0
Loss on divestiture of business											0
Total costs and operating expenses									(4.6)	(4.4)	(3.9)
Operating income									(59.5)	(55.4)	(71)
Interest (income) expense, net - affiliate									0	0	0
Interest expense (income), net									0	0	0
Total interest expense (income), net									0	0	0
Loss (gain) on extinguishment of debt									0	0	0
Income before income tax expense (benefit) and loss from equity method investment									(59.5)	(55.4)	(71)
Income tax expense (benefit)									0	0	0
Loss from equity method investment									0
Net income									(59.5)	(55.4)	(71)
Less: Net income (loss) attributable to noncontrolling interests									0	0	0
Net income attributable to SunCoke Energy, Inc.									(59.5)	(55.4)	(71)
Comprehensive income									(67.6)	(53.2)	(71.8)
Less: Comprehensive income (loss) attributable to noncontrolling interests									0	0	0
Comprehensive income attributable to SunCoke Energy, Inc.									$ (67.6)	$ (53.2)	$ (71.8)

Supplemental Condensed Combin_5

Supplemental Condensed Combining and Consolidating Financial Information - Condensed Consolidating Balance Sheet (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 145.7	$ 120.2
Receivables	75.4	68.5
Inventories	110.4	111
Income tax receivable	0.7	4.8
Other current assets	2.8	6.7
Advances to affiliates	0	0
Total current assets	335	311.2
Notes receivable from affiliate	0	0
Properties, plants and equipment, net	1,471.1	1,501.3
Goodwill	76.9	76.9
Other intangible assets, net	156.8	167.9
Deferred income taxes	0	0
Deferred charges and other assets	5.5	2.8
Total assets	2,045.3	2,060.1
Liabilities and Equity
Advances from affiliate	0	0
Accounts payable	115	115.5
Accrued liabilities	45.6	53.2
Deferred revenue	3	1.7
Current portion of long-term debt and financing obligation	3.9	2.6
Interest payable	3.6	5.4
Income taxes payable	0	0
Total current liabilities	171.1	178.4
Long-term debt and financing obligation	834.5	861.1
Payable to affiliate	0	0
Accrual for black lung benefits	44.9	44.9
Retirement benefit liabilities	25.2	28.2
Deferred income taxes	254.7	257.8
Asset retirement obligations	14.6	14
Other deferred credits and liabilities	17.6	16.1
Total liabilities	1,362.6	1,400.5
Equity
Preferred stock	0	0
Common stock	0.7	0.7
Treasury stock	(140.7)	(140.7)
Additional paid-in capital	488.8	486.2
Accumulated other comprehensive income (loss)	(13.1)	(21.2)
Retained earnings (deficit)	127.4	101.2
Equity investment eliminations	0	0
Total SunCoke Energy, Inc. stockholders' equity	463.1	426.2
Noncontrolling interests	219.6	233.4
Total equity	682.7	659.6	$ 639.9	$ 622.8
Total liabilities and equity	$ 2,045.3	$ 2,060.1
Supplemental Condensed Consolidating Financial Information (Additional Textual) [Abstract]
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
Preferred stock, shares outstanding	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)	72,233,750	72,006,905
Treasury stock, shares (in shares)	7,477,657	7,477,657
Reportable Legal Entities | Issuer
Assets
Cash and cash equivalents	$ 0	$ 0
Receivables	0	0
Inventories	0	0
Income tax receivable	0	0
Other current assets	0	0
Advances to affiliates	0	0
Total current assets	0	0
Notes receivable from affiliate	0	0
Properties, plants and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Deferred income taxes	7	7.1
Deferred charges and other assets	0	0
Total assets	7	7.1
Liabilities and Equity
Advances from affiliate	167.3	162.2
Accounts payable	0	0
Accrued liabilities	1.8	1.5
Deferred revenue	0	0
Current portion of long-term debt and financing obligation	1.1	0
Interest payable	0.4	1.4
Income taxes payable	1.9	1.9
Total current liabilities	172.5	167
Long-term debt and financing obligation	41.2	42.7
Payable to affiliate	0	0
Accrual for black lung benefits	0	0
Retirement benefit liabilities	0	0
Deferred income taxes	0	0
Asset retirement obligations	0	0
Other deferred credits and liabilities	3.5	3.7
Total liabilities	217.2	213.4
Equity
Preferred stock	0	0
Common stock	0.7	0.7
Treasury stock	(140.7)	(140.7)
Additional paid-in capital	488.9	486.2
Accumulated other comprehensive income (loss)	(13.1)	(21.2)
Retained earnings (deficit)	127.5	101.2
Equity investment eliminations	(673.5)	(632.5)
Total SunCoke Energy, Inc. stockholders' equity	(210.2)	(206.3)
Noncontrolling interests	0	0
Total equity	(210.2)	(206.3)
Total liabilities and equity	7	7.1
Reportable Legal Entities | Guarantor Subsidiaries
Assets
Cash and cash equivalents	123.2	103.6
Receivables	13.3	17.1
Inventories	10.6	9.1
Income tax receivable	0	0
Other current assets	1.8	4.6
Advances to affiliates	281.1	245.8
Total current assets	430	380.2
Notes receivable from affiliate	0	89
Properties, plants and equipment, net	54.3	59.8
Goodwill	3.4	3.4
Other intangible assets, net	1.1	1.7
Deferred income taxes	0	0
Deferred charges and other assets	5.1	2.3
Total assets	493.9	536.4
Liabilities and Equity
Advances from affiliate	0	0
Accounts payable	14.7	16.4
Accrued liabilities	13.7	19.7
Deferred revenue	0	0
Current portion of long-term debt and financing obligation	0	0
Interest payable	0	0
Income taxes payable	93.5	81.4
Total current liabilities	121.9	117.5
Long-term debt and financing obligation	0	0
Payable to affiliate	200	300
Accrual for black lung benefits	10.9	11.8
Retirement benefit liabilities	12.2	13.7
Deferred income taxes	194.9	193.8
Asset retirement obligations	0	0
Other deferred credits and liabilities	6.6	6.4
Total liabilities	546.5	643.2
Equity
Preferred stock	0	0
Common stock	0	0
Treasury stock	0	0
Additional paid-in capital	61	141
Accumulated other comprehensive income (loss)	(2)	(2.2)
Retained earnings (deficit)	526.1	475.6
Equity investment eliminations	(637.7)	(721.2)
Total SunCoke Energy, Inc. stockholders' equity	(52.6)	(106.8)
Noncontrolling interests	0	0
Total equity	(52.6)	(106.8)
Total liabilities and equity	493.9	536.4
Reportable Legal Entities | Non- Guarantor Subsidiaries
Assets
Cash and cash equivalents	22.5	16.6
Receivables	62.1	51.4
Inventories	99.8	101.9
Income tax receivable	96.1	88.1
Other current assets	1	2.1
Advances to affiliates	0	0
Total current assets	281.5	260.1
Notes receivable from affiliate	200	300
Properties, plants and equipment, net	1,416.8	1,441.5
Goodwill	73.5	73.5
Other intangible assets, net	155.7	166.2
Deferred income taxes	0	0
Deferred charges and other assets	0.4	0.5
Total assets	2,127.9	2,241.8
Liabilities and Equity
Advances from affiliate	113.8	83.6
Accounts payable	100.3	99.1
Accrued liabilities	30.1	32
Deferred revenue	3	1.7
Current portion of long-term debt and financing obligation	2.8	2.6
Interest payable	3.2	4
Income taxes payable	0	0
Total current liabilities	253.2	223
Long-term debt and financing obligation	793.3	818.4
Payable to affiliate	0	89
Accrual for black lung benefits	34	33.1
Retirement benefit liabilities	13	14.5
Deferred income taxes	66.8	71.1
Asset retirement obligations	14.6	14
Other deferred credits and liabilities	7.5	6
Total liabilities	1,182.4	1,269.1
Equity
Preferred stock	0	0
Common stock	0	0
Treasury stock	0	0
Additional paid-in capital	612.8	641.9
Accumulated other comprehensive income (loss)	(11.1)	(19)
Retained earnings (deficit)	124.2	116.4
Equity investment eliminations	0	0
Total SunCoke Energy, Inc. stockholders' equity	725.9	739.3
Noncontrolling interests	219.6	233.4
Total equity	945.5	972.7
Total liabilities and equity	2,127.9	2,241.8
Combining and Consolidating Adjustments
Assets
Cash and cash equivalents	0	0
Receivables	0	0
Inventories	0	0
Income tax receivable	(95.4)	(83.3)
Other current assets	0	0
Advances to affiliates	(281.1)	(245.8)
Total current assets	(376.5)	(329.1)
Notes receivable from affiliate	(200)	(389)
Properties, plants and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Deferred income taxes	(7)	(7.1)
Deferred charges and other assets	0	0
Total assets	(583.5)	(725.2)
Liabilities and Equity
Advances from affiliate	(281.1)	(245.8)
Accounts payable	0	0
Accrued liabilities	0	0
Deferred revenue	0	0
Current portion of long-term debt and financing obligation	0	0
Interest payable	0	0
Income taxes payable	(95.4)	(83.3)
Total current liabilities	(376.5)	(329.1)
Long-term debt and financing obligation	0	0
Payable to affiliate	(200)	(389)
Accrual for black lung benefits	0	0
Retirement benefit liabilities	0	0
Deferred income taxes	(7)	(7.1)
Asset retirement obligations	0	0
Other deferred credits and liabilities	0	0
Total liabilities	(583.5)	(725.2)
Equity
Preferred stock	0	0
Common stock	0	0
Treasury stock		0
Additional paid-in capital	(673.9)	(782.9)
Accumulated other comprehensive income (loss)	13.1	21.2
Retained earnings (deficit)	(650.4)	(592)
Equity investment eliminations	1,311.2	1,353.7
Total SunCoke Energy, Inc. stockholders' equity	0	0
Noncontrolling interests	0	0
Total equity	0	0
Total liabilities and equity	$ (583.5)	$ (725.2)

Supplemental Condensed Combin_6

Supplemental Condensed Combining and Consolidating Financial Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 5.5	$ 17.1	$ 11.4	$ 13	$ 173.9	$ 18.8	$ (31.5)	$ (57.7)	$ 47	$ 103.5	$ 59.5
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									5.4	0	0
Depreciation and amortization expense									141.6	128.2	114.2
Deferred income tax (benefit) expense									(3.4)	(87.2)	3.1
Gain on curtailment and payments in excess of expense for postretirement plan benefits									(2.4)	(1.8)	(2.6)
Share-based compensation expense									3.1	4.8	6.5
Equity in loss of subsidiaries									0	0	0
Loss (gain) on extinguishment of debt							$ 20.2		0.3	20.4	(25)
Loss on divestiture of business									0	0	14.7
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables									(6.9)	(7.8)	3.7
Inventories									0.6	(18.5)	29.4
Accounts payable									(0.7)	11.7	(0.8)
Accrued liabilities									(7.3)	2.6	6.8
Deferred revenue									1.3	(0.8)	0.4
Interest payable									(1.8)	(10.8)	(2.7)
Income taxes									4.5	(0.2)	7
Other									4.5	4.4	4.9
Net cash provided by operating activities									185.8	148.5	219.1
Cash Flows from Investing Activities:
Capital expenditures									(100.3)	(75.6)	(63.7)
Sale of equity method investment									(4)
Return of Brazilian investment									0	20.5	20.5
Divestiture of coal business									0	0	(12.8)
Other investing activities									0.5	0	2.1
Net cash used in investing activities									(95.8)	(55.1)	(53.9)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt									45	693.7	0
Repayment of long-term debt									(45.7)	(644.9)	(66.1)
Debt issuance costs									(0.5)	(17.4)	(0.2)
Proceeds from revolving facility									179.5	350	28
Repayment of revolving facility									(204.5)	(392)	(98.4)
Proceeds from financing obligation									0	0	16.2
Repayment of financing obligation									(2.6)	(2.5)	(1)
Cash distributions to noncontrolling interests									(31.9)	(47)	(49.4)
Acquisition of additional interest in the Partnership									(4.2)	(48.7)
Other financing activities									0.4	1.1	(1.4)
Net increase (decrease) in advances from affiliates									0	0	0
Net cash used in financing activities									(64.5)	(107.7)	(172.3)
Net increase (decrease) in cash, cash equivalents and restricted cash									25.5	(14.3)	(7.1)
Cash, cash equivalents and restricted cash at beginning of year				120.2				134.5	120.2	134.5	141.6
Cash, cash equivalents and restricted cash at end of year	145.7				120.2				145.7	120.2	134.5
Issuer
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									0
Loss on divestiture of business											0
Guarantor Subsidiaries
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									0
Loss on divestiture of business											0
Non- Guarantor Subsidiaries
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									5.4
Loss on divestiture of business											14.7
Reportable Legal Entities | Issuer
Cash Flows from Operating Activities:
Net income									26.2	122.4	14.4
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									0
Depreciation and amortization expense									0	0	0
Deferred income tax (benefit) expense									(0.2)	(22.8)	(16.6)
Gain on curtailment and payments in excess of expense for postretirement plan benefits									0	0	0
Share-based compensation expense									3.1	4.7	6.5
Equity in loss of subsidiaries									(34.3)	(109.9)	(19.7)
Loss (gain) on extinguishment of debt									0.3	0.4	0
Loss on divestiture of business											0
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables									0	0	0
Inventories									0	0	0
Accounts payable									0	0	0
Accrued liabilities									0.4	(0.2)	1.5
Deferred revenue									0	0	0
Interest payable									(1)	(0.1)	0.1
Income taxes									0.3	(2.7)	(6.9)
Other									0.3	1.3	2.5
Net cash provided by operating activities									(4.9)	(6.9)	(18.2)
Cash Flows from Investing Activities:
Capital expenditures									0	0	0
Sale of equity method investment									0
Return of Brazilian investment										0	0
Divestiture of coal business											0
Other investing activities									0		0
Net cash used in investing activities									0	0	0
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt									45	0
Repayment of long-term debt									(45.7)	0	0
Debt issuance costs									(0.5)	(1.6)	0
Proceeds from revolving facility									0	0	0
Repayment of revolving facility									0	0	(60.4)
Proceeds from financing obligation											0
Repayment of financing obligation									0	0	0
Cash distributions to noncontrolling interests									0	0	0
Acquisition of additional interest in the Partnership									0	0
Other financing activities									0.7	1.1	(0.3)
Net increase (decrease) in advances from affiliates									5.4	7.4	78.9
Net cash used in financing activities									4.9	6.9	18.2
Net increase (decrease) in cash, cash equivalents and restricted cash									0	0	0
Cash, cash equivalents and restricted cash at beginning of year				0				0	0	0	0
Cash, cash equivalents and restricted cash at end of year	0				0				0	0	0
Reportable Legal Entities | Guarantor Subsidiaries
Cash Flows from Operating Activities:
Net income									50.4	125.9	31.1
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									0
Depreciation and amortization expense									8.8	7.5	9.2
Deferred income tax (benefit) expense									1.2	(170.1)	8.7
Gain on curtailment and payments in excess of expense for postretirement plan benefits									(1)	(1)	(1.5)
Share-based compensation expense									0	0	0
Equity in loss of subsidiaries									(25.2)	54.5	(51.3)
Loss (gain) on extinguishment of debt									0	0	0
Loss on divestiture of business											0
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables									3.8	(4.9)	(4.3)
Inventories									(1.5)	(0.1)	(3.7)
Accounts payable									(1.6)	3	4.6
Accrued liabilities									(5.9)	(1.3)	4.8
Deferred revenue									0	0	0
Interest payable									0	0	0
Income taxes									12.2	16.3	28.2
Other									(0.9)	0	8.9
Net cash provided by operating activities									40.3	29.8	34.7
Cash Flows from Investing Activities:
Capital expenditures									(2.8)	(4.1)	(5.7)
Sale of equity method investment									0
Return of Brazilian investment										0	0
Divestiture of coal business											0
Other investing activities									0		0
Net cash used in investing activities									(2.8)	(4.1)	(5.7)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt									0	0
Repayment of long-term debt									0	0	0
Debt issuance costs									0	0	0
Proceeds from revolving facility									0	0	0
Repayment of revolving facility									0	0	0
Proceeds from financing obligation											0
Repayment of financing obligation									0	0	0
Cash distributions to noncontrolling interests									0	0	0
Acquisition of additional interest in the Partnership									(4.2)	(48.7)
Other financing activities									0	0	(1.1)
Net increase (decrease) in advances from affiliates									(13.7)	66.9	(38.8)
Net cash used in financing activities									(17.9)	18.2	(39.9)
Net increase (decrease) in cash, cash equivalents and restricted cash									19.6	43.9	(10.9)
Cash, cash equivalents and restricted cash at beginning of year				103.6				59.7	103.6	59.7	70.6
Cash, cash equivalents and restricted cash at end of year	123.2				103.6				123.2	103.6	59.7
Reportable Legal Entities | Non- Guarantor Subsidiaries
Cash Flows from Operating Activities:
Net income									29.9	(89.4)	85
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									5.4
Depreciation and amortization expense									132.8	120.7	105
Deferred income tax (benefit) expense									(4.4)	105.7	11
Gain on curtailment and payments in excess of expense for postretirement plan benefits									(1.4)	(0.8)	(1.1)
Share-based compensation expense									0	0.1	0
Equity in loss of subsidiaries									0	0	0
Loss (gain) on extinguishment of debt									0	20	(25)
Loss on divestiture of business											14.7
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables									(10.7)	(2.9)	8
Inventories									2.1	(18.4)	33.1
Accounts payable									0.9	8.7	(5.4)
Accrued liabilities									(1.8)	4.1	0.5
Deferred revenue									1.3	(0.8)	0.4
Interest payable									(0.8)	(10.7)	(2.8)
Income taxes									(8)	(13.8)	(14.3)
Other									5.1	3.1	(6.5)
Net cash provided by operating activities									150.4	125.6	202.6
Cash Flows from Investing Activities:
Capital expenditures									(97.5)	(71.5)	(58)
Sale of equity method investment									(4)
Return of Brazilian investment										20.5	20.5
Divestiture of coal business											(12.8)
Other investing activities									0.5		2.1
Net cash used in investing activities									(93)	(51)	(48.2)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt									0	693.7
Repayment of long-term debt									0	(644.9)	(66.1)
Debt issuance costs									0	(15.8)	(0.2)
Proceeds from revolving facility									179.5	350	28
Repayment of revolving facility									(204.5)	(392)	(38)
Proceeds from financing obligation											16.2
Repayment of financing obligation									(2.6)	(2.5)	(1)
Cash distributions to noncontrolling interests									(31.9)	(47)	(49.4)
Acquisition of additional interest in the Partnership									0	0
Other financing activities									(0.3)	0	0
Net increase (decrease) in advances from affiliates									8.3	(74.3)	(40.1)
Net cash used in financing activities									(51.5)	(132.8)	(150.6)
Net increase (decrease) in cash, cash equivalents and restricted cash									5.9	(58.2)	3.8
Cash, cash equivalents and restricted cash at beginning of year				16.6				74.8	16.6	74.8	71
Cash, cash equivalents and restricted cash at end of year	22.5				16.6				22.5	16.6	74.8
Combining and Consolidating Adjustments
Cash Flows from Operating Activities:
Net income									(59.5)	(55.4)	(71)
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Loss from equity method investment									0
Depreciation and amortization expense									0	0	0
Deferred income tax (benefit) expense									0	0	0
Gain on curtailment and payments in excess of expense for postretirement plan benefits									0	0	0
Share-based compensation expense									0	0	0
Equity in loss of subsidiaries									59.5	55.4	71
Loss (gain) on extinguishment of debt									0	0	0
Loss on divestiture of business											0
Changes in working capital pertaining to operating activities (net of the effects of divestiture):
Receivables									0	0	0
Inventories									0	0	0
Accounts payable									0	0	0
Accrued liabilities									0	0	0
Deferred revenue									0	0	0
Interest payable									0	0	0
Income taxes									0	0	0
Other									0	0	0
Net cash provided by operating activities									0	0	0
Cash Flows from Investing Activities:
Capital expenditures									0	0	0
Sale of equity method investment									0
Return of Brazilian investment										0	0
Divestiture of coal business											0
Other investing activities									0		0
Net cash used in investing activities									0	0	0
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt									0	0
Repayment of long-term debt									0	0	0
Debt issuance costs									0	0	0
Proceeds from revolving facility									0	0	0
Repayment of revolving facility									0	0	0
Proceeds from financing obligation											0
Repayment of financing obligation									0	0	0
Cash distributions to noncontrolling interests									0	0	0
Acquisition of additional interest in the Partnership									0	0
Other financing activities									0	0	0
Net increase (decrease) in advances from affiliates									0	0	0
Net cash used in financing activities									0	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash									0	0	0
Cash, cash equivalents and restricted cash at beginning of year				$ 0				$ 0	0	0	0
Cash, cash equivalents and restricted cash at end of year	$ 0				$ 0				$ 0	$ 0	$ 0