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Debt and Financing Obligations (Covenants) (Details) - Credit Agreement and Partner Revolver | Dec. 31, 2022 USD ($)
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Line of Credit Facility [Line Items] |
Maximum consolidated leverage ratio | 4.50
Minimum consolidated interest coverage ratio | 2.50
SunCoke Energy Partners, L.P. |
Line of Credit Facility [Line Items] |
Cross default covenant threshold | $ 35,000,000

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- Definition Debt Instrument, Covenant, Cross Default, Threshold + References No definition available. + Details
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Namespace Prefix: | sxc_
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Balance Type: | credit
Period Type: | instant

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- Definition Debt Instrument, Covenant, Interest Coverage Ratio, Minimum + References No definition available. + Details
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Namespace Prefix: | sxc_
Data Type: | xbrli:pureItemType
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- Definition Debt Instrument, Covenant, Leverage Ratio, Maximum + References No definition available. + Details
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Namespace Prefix: | sxc_
Data Type: | xbrli:pureItemType
Balance Type: | na
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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
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |