Call Premium On Debt Redemption

No definition available.

Name:	cmlp_CallPremiumOnDebtRedemption
Namespace Prefix:	cmlp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Consolidated EBITDA to consolidated interest expense (as defined in the Credit Agreement)

+ References

No definition available.

+ Details

Name:	cmlp_ConsolidatedEbitdaToConsolidatedInterestExpense
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Consolidated Leverage Ratio Maximum

+ References

No definition available.

+ Details

Name:	cmlp_ConsolidatedLeverageRatioMaximum
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Imputed Interest

+ References

No definition available.

+ Details

Name:	cmlp_DebtInstrumentImputedInterest
Namespace Prefix:	cmlp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest Coverage Ratio, Minimum

+ References

No definition available.

+ Details

Name:	cmlp_InterestCoverageRatioMinimum
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Restricted Net Assets Under Debt Agreements

+ References

No definition available.

+ Details

Name:	cmlp_RestrictedNetAssetsUnderDebtAgreements
Namespace Prefix:	cmlp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Senior Secured Leverage Ratio

+ References

No definition available.

+ Details

Name:	cmlp_SeniorSecuredLeverageRatio
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Senior Secured Leverage Ratio, maximum

+ References

No definition available.

+ Details

Name:	cmlp_SeniorSecuredLeverageRatiomaximum
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Total funded debt to consolidated EBITDA (as defined in the Credit Agreement)

+ References

No definition available.

+ Details

Name:	cmlp_TotalFundedDebtToConsolidatedEbitda
Namespace Prefix:	cmlp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- 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 of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ 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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

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

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

+ Details

Name:	us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

High end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeHigherFixedInterestRateRange
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Low end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLowerFixedInterestRateRange
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cash distribution paid to unit-holder of limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

+ Details

Name:	us-gaap_EarlyRepaymentOfSeniorDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Gain (loss) incurred in hedging activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

+ Details

Name:	us-gaap_GainLossOnOilAndGasHedgingActivity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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

- Definition

The amount of cash paid for interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

+ Details

Name:	us-gaap_InterestPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Reference 1: 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

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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

+ Details

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

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- 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

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

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: 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

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

Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

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

- Definition

Weighted average interest rate of long-term debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

+ Details

Name:	us-gaap_NumberOfInterestRateDerivativesHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: 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(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: 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

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

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_FinancialGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=cmlp_CrestwoodEquityPartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeByNatureAxis=cmlp_InterestRateSwapMaturing2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=cmlp_RevolvingLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=cmlp_CrestwoodMidstreamCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=cmlp_CrestwoodMidstreamRevolverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=cmlp_FederalFundsRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=cmlp_CEQPCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=cmlp_CrestwoodMidstreamRevolverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_CEQPCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeByNatureAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cmlp_ContractsScenarioAxis=cmlp_CreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cmlp_ContractsScenarioAxis=cmlp_AmendedAndRestatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cmlp_DebtInstrumentsBasisInterestRateAxis=cmlp_LondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_CrestwoodMidstreamCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_CrestwoodMidstreamRevolverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_SeniorNotes2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_SeniorNotes2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_SeniorNotes2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_SeniorNotes2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cmlp_ObligationsUnderNoncompetitionAgreementsAndNotesToFormerOwnersOfBusinessesAcquiredMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt (Narrative) (Detail)																1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
Long-Term Debt (Narrative) (Detail)	Feb. 12, 2016 USD ($)	Nov. 13, 2015 USD ($)	Aug. 14, 2015 USD ($)	May. 15, 2015 USD ($)	Apr. 08, 2015 USD ($)	Feb. 13, 2015 USD ($)	Nov. 14, 2014 USD ($)	Aug. 14, 2014 USD ($)	May. 15, 2014 USD ($)	Feb. 14, 2014 USD ($)	Nov. 14, 2013 USD ($)	Aug. 14, 2013 USD ($)	Aug. 09, 2013 USD ($)	May. 10, 2013 USD ($)	Feb. 12, 2013 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Feb. 28, 2015 USD ($) swap_agreement
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt																				$ 18,900,000	$ 0	$ 0
Gain (Loss) on Hedging Activity																				500,000	2,700,000	1,700,000
Distribution Made to Limited Partner, Cash Distributions Paid			$ 74,300,000	$ 74,300,000		$ 74,300,000	$ 74,100,000	$ 74,100,000	$ 74,200,000	$ 74,100,000	$ 69,500,000	$ 34,300,000	$ 27,400,000	$ 27,400,000	$ 21,000,000		$ 97,200,000	$ 26,600,000		$ 222,900,000	296,500,000	179,600,000
Senior Secured Leverage Ratio, maximum																	3.75			3.75
Senior Secured Leverage Ratio																	1.48			1.37
Early Repayment of Senior Debt																				$ 13,600,000	0	0
Senior notes																				$ 0	350,000,000
Financial Guarantee [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																				7.50%
Guarantor Obligations, Maximum Exposure, Undiscounted																				$ 497,000,000
Crestwood Equity Partners LP
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt																				20,000,000	0	0
Distribution Made to Limited Partner, Cash Distributions Paid	$ 95,600,000	$ 94,300,000	$ 25,700,000	$ 25,700,000		$ 25,800,000	$ 25,600,000	$ 25,600,000	$ 25,700,000	$ 25,600,000	$ 25,000,000	$ 22,300,000				$ 378,300,000			$ 378,300,000	171,500,000	102,500,000	47,300,000
Early Repayment of Senior Debt																				(13,600,000)	0	$ 0
Senior notes																				$ 0	11,400,000
Interest Rate Swap Maturing 2016
Debt Instrument [Line Items]
Fixed rate, range low end																				0.84%
Fixed rate, range high end																				2.35%
Revolving Loan Facility
Debt Instrument [Line Items]
Credit agreement outstanding carrying value																				$ 1,500,000,000	1,000,000,000
Senior Notes \| Crestwood Equity Partners LP
Debt Instrument [Line Items]
Restricted net assets																				2,981,600,000
Minimum \| Crestwood Midstream Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Amount																				0.0030
Maximum \| Crestwood Midstream Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Amount																				$ 0.0050
Revolving Credit Facility \| Crestwood Midstream Revolver \| Federal Funds Rate
Debt Instrument [Line Items]
Variable interest rate																				0.50%
Revolving Credit Facility \| Crestwood Midstream Revolver \| Eurodollar [Member]
Debt Instrument [Line Items]
Variable interest rate																				1.00%
Revolving Credit Facility \| Minimum \| Crestwood Midstream Revolver \| Eurodollar [Member]
Debt Instrument [Line Items]
Variable interest rate																				0.75%
Revolving Credit Facility \| Minimum \| Crestwood Midstream Credit Facility \| Eurodollar [Member]
Debt Instrument [Line Items]
Variable interest rate																				1.75%
Revolving Credit Facility \| Maximum \| Crestwood Midstream Revolver \| Eurodollar [Member]
Debt Instrument [Line Items]
Variable interest rate																				1.75%
Revolving Credit Facility \| Maximum \| Crestwood Midstream Credit Facility \| Eurodollar [Member]
Debt Instrument [Line Items]
Variable interest rate																				2.75%
CEQP Credit Facility
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt																900,000				$ 200,000
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt																			$ 1,800,000
CEQP Credit Facility \| Interest Rate Swap [Member]
Debt Instrument [Line Items]
Number of interest rate derivatives held \| swap_agreement																							5
Aggregate notional amount, cash flow hedges																							$ 175,000,000
CEQP Credit Facility \| Revolving Credit Facility \| Credit Agreement
Debt Instrument [Line Items]
Letters of credit outstanding																					56,700,000
CEQP Credit Facility \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Credit agreement outstanding carrying value																				0	$ 369,000,000
CEQP Credit Facility \| Revolving Credit Facility \| Line of Credit \| Amended And Restated
Debt Instrument [Line Items]
Credit agreement outstanding carrying value																				495,000,000
CEQP Credit Facility \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate																					2.91%
CEQP Credit Facility \| Revolving Credit Facility \| Minimum \| London Interbank Offered Rate
Debt Instrument [Line Items]
Weighted average interest rate																					3.02%
CEQP Credit Facility \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate																					5.00%
Crestwood Midstream Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity																				350,000,000
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit agreement outstanding carrying value																	$ 1,000,000,000			$ 1,000,000,000
Consolidated Leverage Ratio Maximum																	5.50			5.50
Crestwood Midstream Revolver \| Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding																	$ 60,700,000			$ 62,200,000	$ 15,100,000
Debt, Weighted Average Interest Rate																	2.96%			2.70%	2.86%
Credit agreement outstanding carrying value																	$ 762,800,000			$ 735,000,000	$ 555,000,000
Debt Instrument, Unused Borrowing Capacity, Amount																	$ 268,200,000			$ 399,000,000
Interest Coverage Ratio Minimum																	2.50			2.50
Total funded debt to consolidated EBITDA																	4.98			4.75
Consolidated EBITDA to consolidated interest expense																	3.77			3.99
Crestwood Midstream Revolver \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Proceeds from Issuance of Debt					$ 315,000,000											$ 720,000,000
Crestwood Midstream Revolver \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate																	2.94%			2.70%	2.66%
Crestwood Midstream Revolver \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate																	5.00%			5.00%	4.75%
Crestwood Midstream Revolver \| Bridge Loan
Debt Instrument [Line Items]
Credit agreement outstanding carrying value																				$ 25,000,000
Senior Notes 2019
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt																				(17,100,000)
Senior notes																				0	$ 351,000,000
Senior Notes 2019 \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt																				$ 350,000,000
Debt Instrument, Interest Rate, Stated Percentage																				7.75%
Early Repayment of Senior Debt					364,100,000
Interest Paid					500,000
Call Premium On Debt Redemption					$ 13,600,000
Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes																	$ 503,200,000			$ 503,300,000	504,000,000
Senior Notes, 2020 \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt																				$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage																				6.00%
Senior notes																	500,000,000			$ 500,000,000	500,000,000
Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes																	600,000,000			600,000,000	600,000,000
Senior Notes, 2022 \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt																				$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage																				6.125%
Senior notes																	600,000,000			$ 600,000,000	600,000,000
Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes																	700,000,000			700,000,000	0
Senior Notes, 2023 \| Senior Notes
Debt Instrument [Line Items]
Proceeds from Issuance of Debt																	$ 688,300,000			$ 688,300,000
Debt Instrument, Interest Rate, Stated Percentage																	6.25%			6.25%
Senior notes																	$ 700,000,000			$ 700,000,000	0
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired
Debt Instrument [Line Items]
Total payments due																				6,600,000	6,500,000
Obligations under noncompete agreements, unamortized discount																				1,300,000	1,200,000
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired \| Crestwood Equity Partners LP
Debt Instrument [Line Items]
Total payments due																				6,800,000	$ 7,400,000
Obligations under noncompete agreements, unamortized discount																				$ 1,300,000
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired \| Minimum
Debt Instrument [Line Items]
Inputed interest																				5.02%
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired \| Minimum \| Crestwood Equity Partners LP
Debt Instrument [Line Items]
Inputed interest																				5.02%
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired \| Maximum
Debt Instrument [Line Items]
Inputed interest																				8.00%
Obligations Under Noncompetition Agreements And Notes To Former Owners Of Businesses Acquired \| Maximum \| Crestwood Equity Partners LP
Debt Instrument [Line Items]
Inputed interest																				8.00%