$SXC
SunCoke Energy, Inc. Stock $sxc

$sxc Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000151470520000003 Filed on February 20, 2020

Income Statement

Concept	2019 Q4	2019 Q3	2019 Q2
Revenue	$397.2M	$404.3M	$407.5M
YoY Change	7.67%	10.92%	11.04%
Cost Of Revenue	$321.1M	$316.6M	$324.0M
YoY Change	11.53%	11.75%	14.61%
Gross Profit	$39.40M	$49.30M	$43.50M
YoY Change	-0.76%	7.64%	-16.83%
Gross Profit Margin	9.92%	12.19%	10.67%
Selling, General & Admin	$25.60M	$14.30M	$21.90M
YoY Change	51.48%	-8.92%	24.43%
% of Gross Profit	64.97%	29.01%	50.34%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$34.00M	$35.60M	$37.00M
YoY Change	-17.68%	0.56%	15.63%
% of Gross Profit	86.29%	72.21%	85.06%
Operating Expenses	$59.60M	$14.30M	$21.90M
YoY Change	2.41%	-8.92%	24.43%
Operating Profit	-$20.20M	-$212.4M	$21.60M
YoY Change	9.19%	-805.65%	-37.75%
Interest Expense	-$14.70M	$15.70M	$15.10M
YoY Change	1.38%	1.95%	-3.82%
% of Operating Profit			69.91%
Other Income/Expense, Net
YoY Change
Pretax Income	$1.800M	-$226.6M	$6.500M
YoY Change	-78.31%	-1641.5%	-65.79%
Income Tax	$2.600M	-$63.50M	$3.200M
% Of Pretax Income	144.44%		49.23%
Net Earnings	-$1.400M	-$163.0M	$2.300M
YoY Change	-177.78%	-1517.39%	-45.24%
Net Earnings / Revenue	-0.35%	-40.32%	0.56%
Basic Earnings Per Share	-$0.02	-$1.81	$0.03
Diluted Earnings Per Share	-$0.02	-$1.81	$0.03
COMMON SHARES
Basic Shares Outstanding	86.76M shares	89.90M shares	65.90M shares
Diluted Shares Outstanding		89.90M shares	66.10M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$97.10M	$93.70M	$102.2M
YoY Change	-33.36%	-44.36%	-28.53%
Cash & Equivalents	$97.10M	$93.70M	$102.2M
Short-Term Investments
Other Short-Term Assets	$2.500M	$4.200M	$4.900M
YoY Change	-10.71%	-20.75%	-48.42%
Inventory	$147.0M	$157.0M	$175.7M
Prepaid Expenses
Receivables	$59.50M	$62.70M	$98.90M
Other Receivables	$2.200M	$3.100M	$3.200M
Total Short-Term Assets	$308.3M	$320.7M	$384.9M
YoY Change	-7.97%	-13.3%	8.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.390B	$1.390B	$1.455B
YoY Change	-5.5%	-6.67%	-2.22%
Goodwill	$3.400M	$3.400M	$76.90M
YoY Change	-95.58%	-95.58%	0.0%
Intangibles	$34.70M	$35.40M	$151.4M
YoY Change	-77.87%	-77.82%	-6.72%
Long-Term Investments
YoY Change
Other Assets	$17.20M	$17.20M	$14.40M
YoY Change	212.73%	473.33%	380.0%
Total Long-Term Assets	$1.446B	$1.446B	$1.698B
YoY Change	-15.48%	-16.36%	-1.88%
TOTAL ASSETS
Total Short-Term Assets	$308.3M	$320.7M	$384.9M
Total Long-Term Assets	$1.446B	$1.446B	$1.698B
Total Assets	$1.754B	$1.766B	$2.082B
YoY Change	-14.25%	-15.82%	-0.09%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$142.4M	$119.8M	$137.2M
YoY Change	23.83%	-22.66%	1.78%
Accrued Expenses	$47.30M	$46.10M	$49.90M
YoY Change	3.73%	0.88%	12.39%
Deferred Revenue	$300.0K	$2.100M	$13.50M
YoY Change	-90.0%	-19.23%	321.88%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.900M	$2.900M	$5.100M
YoY Change	-25.64%	-25.64%	34.21%
Total Short-Term Liabilities	$194.8M	$185.3M	$209.6M
YoY Change	13.85%	-17.2%	10.14%
LONG-TERM LIABILITIES
Long-Term Debt	$780.0M	$780.0M	$828.0M
YoY Change	-6.53%	-6.55%	-3.72%
Other Long-Term Liabilities	$23.60M	$23.10M	$25.30M
YoY Change	34.09%	37.5%	52.41%
Total Long-Term Liabilities	$803.6M	$803.1M	$853.3M
YoY Change	-5.69%	-5.68%	-2.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$194.8M	$185.3M	$209.6M
Total Long-Term Liabilities	$803.6M	$803.1M	$853.3M
Total Liabilities	$1.235B	$1.219B	$1.360B
YoY Change	-9.34%	-13.86%	-3.7%
SHAREHOLDERS EQUITY
Retained Earnings	-$30.10M	-$23.50M	$139.5M
YoY Change	-123.63%	-118.71%	22.26%
Common Stock	$1.000M	$1.000M	$1.000M
YoY Change	42.86%	42.86%	42.86%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$177.0M	$153.9M	$140.7M
YoY Change	25.8%	9.38%	0.0%
Treasury Stock Shares	13.78M shares	9.544M shares	7.478M shares
Shareholders Equity	$491.6M	$520.6M	$696.5M
YoY Change
Total Liabilities & Shareholders Equity	$1.754B	$1.766B	$2.082B
YoY Change	-14.25%	-15.82%	-0.09%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2019 Q2
OPERATING ACTIVITIES
Net Income	-$1.400M	-$163.0M	$2.300M
YoY Change	-177.78%	-1517.39%	-45.24%
Depreciation, Depletion And Amortization	$34.00M	$35.60M	$37.00M
YoY Change	-17.68%	0.56%	15.63%
Cash From Operating Activities	$61.40M	$84.90M	$300.0K
YoY Change	303.95%	-0.47%	-98.93%
INVESTING ACTIVITIES
Capital Expenditures	-$28.60M	$28.40M	$32.20M
YoY Change	-3.38%	5.19%	14.18%
Acquisitions
YoY Change
Other Investing Activities	$100.0K	$0.00	$200.0K
YoY Change	-50.0%		-95.35%
Cash From Investing Activities	-$28.50M	-$28.40M	-$32.00M
YoY Change	-3.06%	4.8%	33.89%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-29.50M	-65.00M	-10.00M
YoY Change	247.06%	98.17%	23.46%
NET CHANGE
Cash From Operating Activities	61.40M	84.90M	300.0K
Cash From Investing Activities	-28.50M	-28.40M	-32.00M
Cash From Financing Activities	-29.50M	-65.00M	-10.00M
Net Change In Cash	3.400M	-8.500M	-41.70M
YoY Change	-114.98%	-109.96%	942.5%
FREE CASH FLOW
Cash From Operating Activities	$61.40M	$84.90M	$300.0K
Capital Expenditures	-$28.60M	$28.40M	$32.20M
Free Cash Flow	$90.00M	$56.50M	-$31.90M
YoY Change	100.89%	-3.09%	15850.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76800000	shares
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	47000000.0	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-100000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	200000	USD
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.88
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001514705
CY2017	sxc	Operating Leases Income Statement Maximum Lease Revenue OperatingLeasesIncomeStatementMaximumLeaseRevenue	0.10
CY2018	sxc	Operating Leases Income Statement Maximum Lease Revenue OperatingLeasesIncomeStatementMaximumLeaseRevenue	0.10
CY2019	sxc	State And Foreign Income Tax Returns Subject To Examination Period Maximum StateAndForeignIncomeTaxReturnsSubjectToExaminationPeriodMaximum	P5Y
CY2019	sxc	State And Foreign Income Tax Returns Subject To Examination Period Minimum StateAndForeignIncomeTaxReturnsSubjectToExaminationPeriodMinimum	P3Y
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	72233750	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	98047389	shares
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-600000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	76900000	USD
CY2017	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	1100000	USD
CY2018	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	3200000	USD
CY2019	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	2300000	USD
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-300000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	200000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-300000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	0	USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65500000	shares
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1000000	USD
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	4300000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	300000	USD
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	7477657	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	13783182	shares
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-35243
CY2019	dei	Entity Registrant Name EntityRegistrantName	SUNCOKE ENERGY, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	90-0640593
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1011 Warrenville Road
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 600
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Lisle
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60532
CY2019	dei	City Area Code CityAreaCode	630
CY2019	dei	Local Phone Number LocalPhoneNumber	824-1000
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2019	dei	Trading Symbol TradingSymbol	SXC
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65200000	shares
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	799367077	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	83738638	shares
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1600300000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1450900000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1331500000	USD
CY2019	sxc	Cost Of Goods Sold And Operating Expenses CostOfGoodsSoldAndOperatingExpenses	1277600000	USD
CY2018	sxc	Cost Of Goods Sold And Operating Expenses CostOfGoodsSoldAndOperatingExpenses	1124500000	USD
CY2017	sxc	Cost Of Goods Sold And Operating Expenses CostOfGoodsSoldAndOperatingExpenses	1020100000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	75800000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	66100000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1744600000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	1332200000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	1227300000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-144300000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	118700000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	104200000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	79000000.0	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143800000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	141600000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	128200000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	247400000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-60300000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-61400000	USD
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-61900000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1500000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-300000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-20400000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-203100000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	57000000.0	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	21900000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4600000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-81600000	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2018	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-5400000	USD
CY2017	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2018	us-gaap	Profit Loss ProfitLoss	47000000.0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76800000	shares
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3900000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64700000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64300000	shares
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.98
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	20800000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-18900000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-152300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	26200000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	122400000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.98
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.40
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.40
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	14600000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	23600000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17600000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	1235400000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	1362600000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1390200000	USD
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CY2018Q4	us-gaap	Common Stock Value CommonStockValue	700000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3400000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	76900000	USD
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CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17200000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5500000	USD
CY2019Q4	us-gaap	Assets Assets	1753800000	USD
CY2018Q4	us-gaap	Assets Assets	2045300000	USD
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CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	115000000.0	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	47000000.0	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	45600000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	300000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	3000000.0	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2900000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	3900000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2200000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	3600000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	194800000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	171100000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	780000000.0	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	834500000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	800000	USD
CY2019Q4	sxc	Accrual For Black Lung Benefits AccrualForBlackLungBenefits	50500000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-600000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1400000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-9000000.0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-149700000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	55100000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	102400000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3900000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	20800000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-18900000	USD
CY2018Q4	sxc	Accrual For Black Lung Benefits AccrualForBlackLungBenefits	44900000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	24500000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	25200000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	147600000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	254700000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	14400000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-153600000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	34300000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	121300000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	97100000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	145700000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	59500000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	75400000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	147000000.0	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	110400000	USD
CY2019Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	2200000	USD
CY2018Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	700000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	2500000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	2800000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	308300000	USD
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	141600000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	128200000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	177000000.0	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	140700000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	712100000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	488800000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-14400000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13100000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-30100000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	127400000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	491600000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-63100000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	143800000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	47000000.0	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	247400000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	463100000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	26800000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	219600000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	518400000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	682700000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1753800000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2045300000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	204500000	USD
CY2018	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	4200000	USD
CY2017	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	48700000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	36300000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	5100000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3400000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-87200000	USD
CY2019	sxc	Paymentsin Excessof Expensefor Retirement Plans PaymentsinExcessofExpenseforRetirementPlans	1900000	USD
CY2018	sxc	Paymentsin Excessof Expensefor Retirement Plans PaymentsinExcessofExpenseforRetirementPlans	2400000	USD
CY2017	sxc	Paymentsin Excessof Expensefor Retirement Plans PaymentsinExcessofExpenseforRetirementPlans	1800000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4500000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3100000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4800000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-7900000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	400000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1500000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-300000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-20400000	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	644900000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1100000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2100000	USD
CY2018	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-5400000	USD
CY2017	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-15900000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6900000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7800000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	36600000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-600000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	18500000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	23500000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-700000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	11700000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	300000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-7300000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	500000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	17400000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2600000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-2700000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	392000000.0	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1300000	USD
CY2017	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-800000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-1400000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-1800000	USD
CY2019	sxc	Repaymentsof Sale Leaseback Financing Obligation RepaymentsofSaleLeasebackFinancingObligation	2900000	USD
CY2017	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-10800000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	1500000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-4500000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	200000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	3600000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	4500000	USD
CY2018	sxc	Repaymentsof Sale Leaseback Financing Obligation RepaymentsofSaleLeasebackFinancingObligation	2600000	USD
CY2017	sxc	Repaymentsof Sale Leaseback Financing Obligation RepaymentsofSaleLeasebackFinancingObligation	2500000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	14200000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	4400000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	408600000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	181900000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	179500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	185800000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	148500000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	110100000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	100300000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	75600000	USD
CY2019	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	0	USD
CY2018	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	0	USD
CY2017	us-gaap	Proceeds From Sale Of Investment Projects ProceedsFromSaleOfInvestmentProjects	20500000	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	31900000	USD
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	47000000.0	USD
CY2019	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	0	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	4000000.0	USD
CY2017	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-300000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-500000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	350000000.0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	370300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-109800000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-95800000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55100000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	45000000.0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	693700000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	90500000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	45700000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	659600000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-120700000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4200000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-64500000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-107700000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-48600000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	25500000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-14300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	145700000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120200000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	134500000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	47000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	100000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	97100000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	145700000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120200000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	58200000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	59600000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	67900000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9500000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3700000	USD
CY2018	sxc	Adjustmentsto Additional Paidin Capital Adjustmentsto Deferred Tax Liabilities AdjustmentstoAdditionalPaidinCapitalAdjustmentstoDeferredTaxLiabilities	300000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-9000000.0	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5800000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	639900000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-200000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	800000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-500000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	47000000.0	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4800000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1100000	USD
CY2017	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	48700000	USD
CY2017	sxc	Adjustmentsto Additional Paidin Capital Adjustmentsto Deferred Tax Liabilities AdjustmentstoAdditionalPaidinCapitalAdjustmentstoDeferredTaxLiabilities	7100000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	659600000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	682700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-600000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1400000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	682700000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	31900000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3100000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2100000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1000000.0	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4300000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4500000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4900000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8400000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.003
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	700000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-600000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4500000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1700000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	36300000	USD
CY2019	us-gaap	Dividends Dividends	5200000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	14200000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019	sxc	Adjustments To Additional Paid In Capital Transaction Costs AdjustmentsToAdditionalPaidInCapitalTransactionCosts	5400000	USD
CY2019	sxc	Adjustmentsto Additional Paidin Capital Adjustmentsto Deferred Tax Liabilities AdjustmentstoAdditionalPaidinCapitalAdjustmentstoDeferredTaxLiabilities	43700000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	518400000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5600000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-99700000	USD
CY2019	sxc	Coke Production Experience CokeProductionExperience	P55Y
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-23800000	USD
CY2019	sxc	Cokemaking Facilities Periodof Existence CokemakingFacilitiesPeriodofExistence	P30Y
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-300000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8000000.0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-39300000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3100000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:8px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;padding-top:8px;text-indent:48px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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.</span></div>
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2300000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3200000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1100000	USD
CY2019	sxc	Income Tax Reconciliation Impact Of Final Regulations IncomeTaxReconciliationImpactOfFinalRegulations	0	USD
CY2019	sxc	Effective Income Tax Rate Reconciliation Impact Of Final Regulations EffectiveIncomeTaxRateReconciliationImpactOfFinalRegulations	0
CY2018	sxc	Income Tax Reconciliation Impact Of Final Regulations IncomeTaxReconciliationImpactOfFinalRegulations	-1400000	USD
CY2018	sxc	Effective Income Tax Rate Reconciliation Impact Of Final Regulations EffectiveIncomeTaxRateReconciliationImpactOfFinalRegulations	-0.025
CY2017	sxc	Income Tax Reconciliation Impact Of Final Regulations IncomeTaxReconciliationImpactOfFinalRegulations	64200000	USD
CY2017	sxc	Effective Income Tax Rate Reconciliation Impact Of Final Regulations EffectiveIncomeTaxRateReconciliationImpactOfFinalRegulations	2.932
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-4800000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.084
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	12500000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-63100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	17600000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3400000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-87200000	USD
CY2019Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	895	Employee
CY2019Q4	sxc	Percent Number Of Domestic Employees PercentNumberOfDomesticEmployees	0.03
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-203100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4600000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-81600000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-154700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	57000000.0	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-152300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	26200000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	122400000	USD
CY2019	sxc	Increase Decrease In Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Additional Interest Issued To Parent IncreaseDecreaseInConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesAdditionalInterestIssuedToParent	-182500000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-42700000	USD
CY2018	sxc	Increase Decrease In Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Additional Interest Issued To Parent IncreaseDecreaseInConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesAdditionalInterestIssuedToParent	1200000	USD
CY2017	sxc	Increase Decrease In Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Additional Interest Issued To Parent IncreaseDecreaseInConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesAdditionalInterestIssuedToParent	12000000.0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	300000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1400000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21900000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	30200000	USD
CY2018	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	25000000.0	USD
CY2017	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	110400000	USD
CY2019	sxc	Annual Licensing Fees Received AnnualLicensingFeesReceived	5100000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-7.064
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-218600000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	39300000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	4300000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	15500000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	17700000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	12000000.0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1700000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3800000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	7700000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	3300000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	-0.017
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2019	sxc	Tax Increase Due To Income Attributable To Noncontrolling Interest TaxIncreaseDueToIncomeAttributableToNoncontrollingInterest	-600000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2017	sxc	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Increase Decreasein Tax Credit Carryforward Valuation Allowance Dueto Changein Estimateof Realization TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateIncreaseDecreaseinTaxCreditCarryforwardValuationAllowanceDuetoChangeinEstimateofRealization	19000000.0	USD
CY2018Q3	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	-4800000	USD
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	0	USD
CY2019Q4	sxc	Deferred Tax Assets Retirement Benefit Liabilities DeferredTaxAssetsRetirementBenefitLiabilities	6400000	USD
CY2018Q4	sxc	Deferred Tax Assets Retirement Benefit Liabilities DeferredTaxAssetsRetirementBenefitLiabilities	6400000	USD
CY2019Q4	sxc	Deferred Tax Assets Black Lung Benefit Liabilities DeferredTaxAssetsBlackLungBenefitLiabilities	12800000	USD
CY2018Q4	sxc	Deferred Tax Assets Black Lung Benefit Liabilities DeferredTaxAssetsBlackLungBenefitLiabilities	11300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6400000	USD
CY2019Q4	sxc	Deferred Tax Assets Nonconventional Fuel Credit Carryforward DeferredTaxAssetsNonconventionalFuelCreditCarryforward	20500000	USD
CY2018Q4	sxc	Deferred Tax Assets Nonconventional Fuel Credit Carryforward DeferredTaxAssetsNonconventionalFuelCreditCarryforward	21500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	14400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	15900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	0	USD
CY2019Q4	sxc	Deferred Tax Assets Business Interest Tax Carryforwards DeferredTaxAssetsBusinessInterestTaxCarryforwards	5700000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	700000	USD
CY2018Q4	sxc	Deferred Tax Assets Business Interest Tax Carryforwards DeferredTaxAssetsBusinessInterestTaxCarryforwards	1800000	USD
CY2019Q4	sxc	Deferred Tax Assets State Tax Credit Carryforward Net Of Federal Income Tax Effects DeferredTaxAssetsStateTaxCreditCarryforwardNetOfFederalIncomeTaxEffects	1100000	USD
CY2018Q4	sxc	Deferred Tax Assets State Tax Credit Carryforward Net Of Federal Income Tax Effects DeferredTaxAssetsStateTaxCreditCarryforwardNetOfFederalIncomeTaxEffects	2400000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.012
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3900000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.178
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-300000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	400000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.007
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4600000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.080
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	13600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	13500000	USD
CY2019Q4	sxc	Deferred Tax Assets Other Liabilities Not Yet Deductible DeferredTaxAssetsOtherLiabilitiesNotYetDeductible	4400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20700000	USD
CY2018Q4	sxc	Deferred Tax Assets Other Liabilities Not Yet Deductible DeferredTaxAssetsOtherLiabilitiesNotYetDeductible	4900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	85200000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	84100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20900000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.032
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54700000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-81600000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-3.728
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-154700000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	169000000.0	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	14300000	USD
CY2018	sxc	Tax Increase Due To Income Attributable To Noncontrolling Interest TaxIncreaseDueToIncomeAttributableToNoncontrollingInterest	-3900000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.068
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.269
CY2017	sxc	Tax Increase Due To Income Attributable To Noncontrolling Interest TaxIncreaseDueToIncomeAttributableToNoncontrollingInterest	-5400000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.247
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-15000000.0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.074
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1600000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.028
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2000000.0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.091
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	600000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.003
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	64300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	63400000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17900000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	111500000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	194000000.0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	206600000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	211900000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	318100000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	147600000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	254700000	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	11400000	USD
CY2019	sxc	Income Tax Examination Period For Examination IncomeTaxExaminationPeriodForExamination	P1Y
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	94400000	USD
CY2018Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	59900000	USD
CY2019Q4	sxc	Inventory Coke InventoryCoke	8100000	USD
CY2018Q4	sxc	Inventory Coke InventoryCoke	8600000	USD
CY2019Q4	sxc	Inventory Materials Supplies And Other InventoryMaterialsSuppliesAndOther	44500000	USD
CY2018Q4	sxc	Inventory Materials Supplies And Other InventoryMaterialsSuppliesAndOther	41900000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	147000000.0	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	110400000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2293900000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	903700000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2326900000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	855800000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1390200000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1471100000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	76900000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	73500000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	46100000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	11400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	34700000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	199400000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	42600000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	156800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8800000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11100000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11100000	USD
CY2019Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	21700000	USD
CY2018Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	21200000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent	2900000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2000000.0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2000000.0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2000000.0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1800000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	24500000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent	3000000.0	USD
CY2019Q4	sxc	Accrued Other Taxes Payable AccruedOtherTaxesPayable	9900000	USD
CY2018Q4	sxc	Accrued Other Taxes Payable AccruedOtherTaxesPayable	9100000	USD
CY2019Q4	sxc	Accrualfor Black Lung Benefits Current AccrualforBlackLungBenefitsCurrent	4600000	USD
CY2018Q4	sxc	Accrualfor Black Lung Benefits Current AccrualforBlackLungBenefitsCurrent	4500000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	34700000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	14600000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	14000000.0	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1200000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	400000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1000000.0	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	900000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	900000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	100000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	15300000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7900000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7800000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	47000000.0	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	14600000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	900000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	45600000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent	2900000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent	3000000.0	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6500000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6400000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	5400000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	800500000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	859000000.0	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	4300000	USD
CY2019Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	13300000	USD
CY2018Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	15200000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	782900000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	838400000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2900000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	3900000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	780000000.0	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	834500000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2900000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4300000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	143300000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	650000000.0	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	800500000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4300000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	2400000	USD
CY2019	us-gaap	Lease Cost LeaseCost	11700000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	12400000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1900000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	9800000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	11700000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y10M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.048
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	3900000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	7900000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2200000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1700000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	14100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2400000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	11700000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2000000.0	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1100000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1000000.0	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	700000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	5400000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	500000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	100000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	9800000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	7300000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-1400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-9000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-9000000.0	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3000000.0	USD
CY2017Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1700000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3000000.0	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1400000	USD
CY2019	sxc	Contractwith Customer Liability Billings In Excess Of Services Performed ContractwithCustomerLiabilityBillingsInExcessOfServicesPerformed	300000	USD
CY2018	sxc	Contractwith Customer Liability Billings In Excess Of Services Performed ContractwithCustomerLiabilityBillingsInExcessOfServicesPerformed	2700000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	300000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3000000.0	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76800000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64700000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64300000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	800000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	900000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76800000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65500000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65200000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3500000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2800000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3000000.0	shares
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	776100000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	822800000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	800500000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	859000000.0	USD
CY2019	sxc	Adjusted Ebitda AdjustedEBITDA	247900000	USD
CY2018	sxc	Adjusted Ebitda AdjustedEBITDA	263200000	USD
CY2017	sxc	Adjusted Ebitda AdjustedEBITDA	234700000	USD
CY2019	sxc	Adjusted Ebitda Portion Attributableto Noncontrolling Interests AdjustedEBITDAPortionAttributabletoNoncontrollingInterests	40700000	USD
CY2018	sxc	Adjusted Ebitda Portion Attributableto Noncontrolling Interests AdjustedEBITDAPortionAttributabletoNoncontrollingInterests	82000000.0	USD
CY2017	sxc	Adjusted Ebitda Portion Attributableto Noncontrolling Interests AdjustedEBITDAPortionAttributabletoNoncontrollingInterests	86400000	USD
CY2019	sxc	Adjusted Ebitda Excluding Portion Attributableto Noncontrolling Interests AdjustedEBITDAExcludingPortionAttributabletoNoncontrollingInterests	207200000	USD
CY2018	sxc	Adjusted Ebitda Excluding Portion Attributableto Noncontrolling Interests AdjustedEBITDAExcludingPortionAttributabletoNoncontrollingInterests	181200000	USD
CY2017	sxc	Adjusted Ebitda Excluding Portion Attributableto Noncontrolling Interests AdjustedEBITDAExcludingPortionAttributabletoNoncontrollingInterests	148300000	USD
CY2017	sxc	Capitalized Costsand Land Deposits CapitalizedCostsandLandDeposits	5300000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	391300000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	407500000	USD
CY2018Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3700000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	9800000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	404300000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	397200000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	350500000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	367000000.0	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	364500000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	368900000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	46700000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	43500000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	49300000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	39400000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	47000000.0	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	52300000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	45800000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	39700000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	12200000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	3300000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	-163100000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1600300000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1450900000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1331500000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1600300000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1450900000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1331500000	USD
CY2019	sxc	Adjusted Ebitda AdjustedEBITDA	247900000	USD
CY2018	sxc	Adjusted Ebitda AdjustedEBITDA	263200000	USD
CY2017	sxc	Adjusted Ebitda AdjustedEBITDA	234700000	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	143800000	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	143800000	USD
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	141600000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	128200000	USD
CY2019	us-gaap	Interest Expense InterestExpense	60300000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-800000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	13000000.0	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	11400000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	17100000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	5500000	USD
CY2018	us-gaap	Interest Expense InterestExpense	61400000	USD
CY2017	us-gaap	Interest Expense InterestExpense	60600000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1500000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-300000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-20400000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	2300000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	8700000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-163000000.0	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-1400000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2400000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1000000.0	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4600000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-81600000	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-4200000	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	2500000	USD
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	141600000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	128200000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	110100000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	100300000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	75600000	USD
CY2019Q4	sxc	Assets Excluding Income Tax Receivable AssetsExcludingIncomeTaxReceivable	1751600000	USD
CY2018Q4	sxc	Assets Excluding Income Tax Receivable AssetsExcludingIncomeTaxReceivable	2044600000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2200000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	700000	USD
CY2019Q4	us-gaap	Assets Assets	1753800000	USD
CY2018Q4	us-gaap	Assets Assets	2045300000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	47000000.0	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	247400000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-1700000	USD
CY2019	sxc	Equity Method Investment Transaction Costs EquityMethodInvestmentTransactionCosts	5200000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	600000	USD
CY2018Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4300000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7200000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5600000	USD
CY2018	sxc	Equity Method Investment Transaction Costs EquityMethodInvestmentTransactionCosts	400000	USD
CY2017	sxc	Equity Method Investment Transaction Costs EquityMethodInvestmentTransactionCosts	0	USD
CY2019	sxc	Capitalized Costsand Land Deposits CapitalizedCostsandLandDeposits	0	USD
CY2018	sxc	Capitalized Costsand Land Deposits CapitalizedCostsandLandDeposits	0	USD
CY2017	sxc	Capitalized Costsand Land Deposits CapitalizedCostsandLandDeposits	5300000	USD
CY2019	sxc	Adjustmentto Income Lossfrom Equity Method Investments AdjustmenttoIncomeLossfromEquityMethodInvestments	0	USD
CY2018	sxc	Adjustmentto Income Lossfrom Equity Method Investments AdjustmenttoIncomeLossfromEquityMethodInvestments	-5400000	USD
CY2017	sxc	Adjustmentto Income Lossfrom Equity Method Investments AdjustmenttoIncomeLossfromEquityMethodInvestments	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-54700000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-148400000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3900000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-152300000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-149700000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3900000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1600300000	USD
CY2019	sxc	Equity In Earnings Loss Of Subsidiaries EquityInEarningsLossOfSubsidiaries	0	USD
CY2019	sxc	Cost Of Goods Sold And Operating Expenses CostOfGoodsSoldAndOperatingExpenses	1277600000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	75800000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143800000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	247400000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1744600000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-144300000	USD
CY2019	sxc	Interest Income Cost Affiliate InterestIncomeCostAffiliate	0	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-60300000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-60300000	USD
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1500000	USD
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.81
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2018Q4	sxc	Partnership Agreement Percentageof Net Assets PartnershipAgreementPercentageofNetAssets	0.25
CY2019	us-gaap	Revenues Revenues	1600300000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	4200000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-203100000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	11500000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	1800000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.81
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2019Q4	us-gaap	Liabilities Liabilities	1235400000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	491600000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	26800000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	115000000.0	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	0	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	142400000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	171100000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4500000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	834500000	USD
CY2018Q4	sxc	Payable To Affiliate PayableToAffiliate	0	USD
CY2018Q4	sxc	Accrual For Black Lung Benefits AccrualForBlackLungBenefits	44900000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-153600000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	25200000	USD
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CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	145700000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	103500000	USD
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Files In Submission

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$SXC
SunCoke Energy, Inc. Stock $sxc

2019 Q4 Form 10-K Financial Statement

#000151470520000003 Filed on February 20, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SXC SunCoke Energy, Inc. Stock $sxc

2019 Q4 Form 10-K Financial Statement

#000151470520000003 Filed on February 20, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SXC
SunCoke Energy, Inc. Stock $sxc