XML 63 R50.htm IDEA: XBRL DOCUMENT
v3.25.2

Revenue from Contracts with Customers - Narrative (Details) T in Millions, $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2025 USD ($) performance_obligation T
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Number of performance obligations in handling and mixing services | performance_obligation | 2
Cokemaking |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Unsatisfied performance obligations capacity (in tons) | T | 17.8
Average remaining term | 9 years
Logistics |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Average remaining term | 3 years
Performance obligation amount | $ | $ 47.5

X
- Definition Number Of Performance Obligations In Handling And Mixing Services + References No definition available. + Details
Name: | sxc_NumberOfPerformanceObligationsInHandlingAndMixingServices
Namespace Prefix: | sxc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Revenue, Remaining Performance Obligation, Average Remaining Term + References No definition available. + Details
Name: | sxc_RevenueRemainingPerformanceObligationAverageRemainingTerm
Namespace Prefix: | sxc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue, Unsatisfied Performance Obligation, Capacity + References No definition available. + Details
Name: | sxc_RevenueUnsatisfiedPerformanceObligationCapacity
Namespace Prefix: | sxc_
Data Type: | dtr-types:weightItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -SubTopic 10 -Topic 606 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=sxc_CokeSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=sxc_CoalLogisticsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |