Interest in Partnership

No definition available.

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Period Type:	instant

- Definition

Limited Liability Company (LLC) or Limited Partnership (LP), Ownership Interest, Public

+ References

No definition available.

+ Details

Name:	sxc_LimitedLiabilityCompanyLLCorLimitedPartnershipLPOwnershipInterestPublic
Namespace Prefix:	sxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of facilities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=sxc_VisaSuncokeLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

General (Details) - Cokemaking_facility	3 Months Ended
General (Details) - Cokemaking_facility	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Facilities	5
Segment Reporting Information [Line Items]
Ownership percentage	100.00%
Ownership interest of general partnership (as a percent)	2.00%
Interest in partnership (as a percent)	53.90%
Ownership interest, public (as a percent)	44.10%
VISA SunCoke Limited
Segment Reporting Information [Line Items]
Ownership percentage		0.00%	49.00%