Consecutive Quarters, Margin Reduction Threshold

No definition available.

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- Definition

Customary letter of credit fee, including a fronting fee per annum on the stated amount of each outstanding letter of credit.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt instrument percentage of discount price.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Effective Date, Margin Reduction Threshold

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Fixed charge coverage ratio.

+ References

No definition available.

+ Details

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

- Definition

Fixed Charge Coverage Ratio, Margin Reduction Threshold

+ References

No definition available.

+ Details

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Namespace Prefix:	clmt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Incremental Uncommitted Expansion Feature

+ References

No definition available.

+ Details

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

- Definition

Letter of credit sublimit percentage.

+ References

No definition available.

+ Details

Name:	clmt_LetterOfCreditSublimitPercentage
Namespace Prefix:	clmt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Long term debt.

+ References

No definition available.

+ Details

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

- Definition

Non cash debt extinguishment costs.

+ References

No definition available.

+ Details

Name:	clmt_NonCashDebtExtinguishmentCosts
Namespace Prefix:	clmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

TexStar Capital Lease Obligation

+ References

No definition available.

+ Details

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

- Definition

TexStar Contract Period Term

+ References

No definition available.

+ Details

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

- Definition

Amount of accumulated amortization of debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentFrequencyOfPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentIssuanceDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- 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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCovenantTerms
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=clmt_FILORevolverMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=clmt_NotesDueJanuaryTwoThousandTwentyOneatFixedRatedElevenPointFivePercentageInterestPaymentsMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_SeniorNotesMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	clmt_InterestRateMarginOnRevolvingCreditFacilityAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	clmt_InterestRateMarginOnRevolvingCreditFacilityAxis=us-gaap_PrimeRateMember
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Period Type:

- Details

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- Details

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Long-Term Debt - Narrative (Details) $ in Millions		3 Months Ended	6 Months Ended
Long-Term Debt - Narrative (Details) $ in Millions	Apr. 20, 2016 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Apr. 09, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Accumulated Amortization, Deferred Finance Costs		$ 21.1	$ 21.1		$ 21.8
Long-Term Debt (Textual) [Abstract]
Extinguishment of Debt, Amount		58.2	58.8
Non Cash Debt Extinguishment Costs		11.6
Senior secured revolving credit facility		600.0	600.0
TexStar Capital Lease Obligation		38.1	$ 38.1
TexStar Contract Period Term			20 years
FILO Revolver
Long-Term Debt (Textual) [Abstract]
Senior secured revolving credit facility		25.0	$ 25.0
Notes Due January 2021 at Fixed Rated 11.5% Interest Payments
Long-Term Debt (Textual) [Abstract]
Date senior notes issued and sold	Apr. 20, 2016
Senior notes, aggregate principal amount issued and sold	$ 400.0
Maturity date	Jan. 15, 2021
Debt instrument percent discount price of par	98.273%
Frequency of interest payment	semiannually
Debt Issuance Costs, Net				$ 58.2
Senior Notes \| Maximum
Long-Term Debt (Textual) [Abstract]
Fixed charge coverage ratio			1.6
Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Maturity date			Feb. 28, 2023
Frequency of interest payment			quarterly
Senior secured revolving credit facility					900.0
Incremental uncommitted expansion feature		500.0	$ 500.0
Customary letter of credit fee, including a fronting fee per annum on the stated amount of each outstanding letter of credit			0.125%
Outstanding borrowings		0.1	$ 0.1		0.2
Outstanding standby letters of credit		$ 30.8	$ 30.8		$ 67.3
Financial covenant			if the availability of loans under the revolving credit facility falls below the sum of the amount of FILO Loans outstanding plus the greater of (i) 10% of the Borrowing Base (as defined in the revolving credit facility agreement) and (ii) $35 million (which amount is subject to increase in proportion to revolving commitment increases), the Company will be required to maintain as of the end of each fiscal quarter a Fixed Charge Coverage Ratio (as defined in the revolving credit facility agreement) of at least 1.0 to 1.0.
Revolving Credit Facility \| Maximum
Long-Term Debt (Textual) [Abstract]
Letter of Credit Sublimit		90.00%	90.00%		90.00%
Basis points			25.00%
Unutilized commitments fee to the lender under the revolving credit facility			0.375%
Revolving Credit Facility \| Minimum
Long-Term Debt (Textual) [Abstract]
Fixed Charge Coverage Ratio, Margin Reduction Threshold			550.00%
Consecutive Quarters, Margin Reduction Threshold		4	4
Effective Date, Margin Reduction Threshold			Aug. 23, 2018
Unutilized commitments fee to the lender under the revolving credit facility			0.25%
London Interbank Offered Rate (LIBOR) \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			250.00%
London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			150.00%
Prime Rate \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			150.00%
Prime Rate \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			50.00%
Quarterly Average Availability Percentage, Range 1 \| London Interbank Offered Rate (LIBOR) \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			2.50%
Quarterly Average Availability Percentage, Range 1 \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			1.50%
Quarterly Average Availability Percentage, Range 1 \| Prime Rate \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			1.50%
Quarterly Average Availability Percentage, Range 1 \| Prime Rate \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			0.50%
Quarterly Average Availability Percentage, Range 2 \| London Interbank Offered Rate (LIBOR) \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			2.75%
Quarterly Average Availability Percentage, Range 2 \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			1.75%
Quarterly Average Availability Percentage, Range 2 \| Prime Rate \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			1.75%
Quarterly Average Availability Percentage, Range 2 \| Prime Rate \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			0.75%
Quarterly Average Availabiity Percentage, Range 3 \| London Interbank Offered Rate (LIBOR) \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			3.00%
Quarterly Average Availabiity Percentage, Range 3 \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			2.00%
Quarterly Average Availabiity Percentage, Range 3 \| Prime Rate \| FILO Revolver
Long-Term Debt (Textual) [Abstract]
Basis points			2.00%
Quarterly Average Availabiity Percentage, Range 3 \| Prime Rate \| Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Basis points			1.00%