Asset financing arrangement

No definition available.

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

- Definition

Number of warrants or rights issued.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

MRL asset financing arrangement

+ References

No definition available.

+ Details

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

- Definition

MRL revolving credit agreement

+ References

No definition available.

+ Details

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

- Definition

MRL Term Loan Credit Agreement

+ References

No definition available.

+ Details

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

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

+ Details

Name:	us-gaap_LinesOfCreditFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates.

+ References

+ Details

Name:	us-gaap_LoansPayableFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Subparagraph (SX 210.5-02(22))
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Balance Type:	credit
Period Type:	instant

- Details

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Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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- Details

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Fair Value Measurements - Carrying Value (Details) - USD ($) $ / shares in Units, $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Jul. 10, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Class of warrants issued	2,000,000	2,000,000	2,000,000
Exercise price			$ 20
MRL term loan credit agreement		$ 73.7
MRL asset financing arrangements		368.1
Shreveport terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	$ 118.5	42.1
Montana terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	26.7	30.4
Montana refinery asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	143.5	108.7
Fair Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notes payable, fair value disclosure	1,080.8	1,218.3
Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
MRL revolving credit agreement		0.0
MRL term loan credit agreement		73.7
MRL asset financing arrangements		368.1
Finance leases and other obligations	2.1	2.9
Fair Value \| Level 3 \| Revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Revolving credit facility	167.6	286.6
Fair Value \| Level 3 \| Borrowings under the DOE Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions
DOE Loan	805.5	0.0
Fair Value \| Level 3 \| Shreveport terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	118.5	42.1
Fair Value \| Level 3 \| Montana terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	26.7	30.4
Fair Value \| Level 3 \| Montana refinery asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	143.5	108.7
Carrying Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notes payable, fair value disclosure	1,064.7	1,196.7
Carrying Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
MRL revolving credit agreement		(0.3)
MRL term loan credit agreement		71.4
MRL asset financing arrangements		365.4
Finance leases and other obligations	2.1	2.9
Carrying Value \| Level 3 \| Revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Revolving credit facility	165.6	283.6
Carrying Value \| Level 3 \| Borrowings under the DOE Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions
DOE Loan	785.4
Carrying Value \| Level 3 \| Shreveport terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	115.9	41.6
Carrying Value \| Level 3 \| Montana terminal asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	26.6	30.2
Carrying Value \| Level 3 \| Montana refinery asset financing arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Asset financing arrangement	$ 142.3	$ 108.7