Subsequent Events (Details) - Subsequent Event - USD ($) $ in Millions	Jul. 25, 2025	Jul. 28, 2025
Subsequent Events
Settlement of outstanding obligation	$ 40.0
11.0% July 2026, Notes
Subsequent Events
Debt instrument, repurchase amount		$ 80.0
Calumet Shreveport Refining, LLC
Subsequent Events
Purchase price of assets sold and leased back	$ 120.0
Lease agreement term	7 years
Monthly rent	$ 1.8
Cost of capital (in %)	10.75%
Repurchase term	6 years
Repurchase price	$ 42.0

Amount of proceeds from sale and lease back transaction used for settlement of obligations during the period.

No definition available.

Name:	clmt_ProceedsFromSaleAndLeaseBackUsedForSettlementOfObligations
Namespace Prefix:	clmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The purchase price of the assets sold and leased back to the seller.

+ References

No definition available.

+ Details

Name:	clmt_PurchasePriceOfAssetsSoldAndLeasedBack
Namespace Prefix:	clmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the percentage of cost of capital relating to rental payments made under sale and leaseback transaction.

+ References

No definition available.

+ Details

Name:	clmt_SaleLeasebackTransactionCostOfCapitalPercentage
Namespace Prefix:	clmt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of monthly rental payment to be made under the sale and leaseback transaction.

+ References

No definition available.

+ Details

Name:	clmt_SaleLeasebackTransactionMonthlyRentalPayment
Namespace Prefix:	clmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Term for repurchasing the asset sold under sale and leaseback transaction in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	clmt_SaleLeasebackTransactionRepurchaseOptionTerm
Namespace Prefix:	clmt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of consideration for repurchasing the asset sold under sale and leaseback transaction.

+ References

No definition available.

+ Details

Name:	clmt_SaleLeasebackTransactionRepurchasePrice
Namespace Prefix:	clmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lease term for sale and leaseback transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479741/842-40-50-2

+ Details

Name:	us-gaap_SaleLeasebackTransactionLeaseTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Period Type: