Related Party Transaction, (Income) Expenses from Transactions with Related Party

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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+ Details

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

- Definition

Amount of receivables arising from transactions with related parties due within 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
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-Subparagraph (SX 210.5-02.3(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	debit
Period Type:	instant

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

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

- Definition

Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

+ References

No definition available.

+ Details

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

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
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+ Details

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Balance Type:	credit
Period Type:	duration

- Details

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Balance Type:
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- 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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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	$ 0.5	$ 0.7	$ 1.4	$ 2.1
General and administrative expenses at CEQP charged from Crestwood Holdings, net(4)	6.6	1.8	16.4	3.5
Affiliated Entity
Related Party Transaction [Line Items]
Related party receivables	9.8		9.8		$ 5.6
Gathering and processing revenues at CEQP and CMLP	0.5	0.7	1.4	2.1
Gathering and processing costs of product/services sold at CEQP and CMLP(1)	3.7	5.0	11.8	13.7
General and administrative expenses charged by CEQP to CMLP, net(3)	4.4	2.7	14.8	9.6
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable at CEQP	9.7		9.7		2.5
Crestwood Equity Partners LP
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transaction, (Income) Expenses from Transactions with Related Party	(0.2)	(0.5)	(0.4)	(0.6)
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	0.5	0.7	1.4	2.1
Crestwood Midstream Partners LP \| Affiliated Entity
Related Party Transaction [Line Items]
General and administrative expenses charged by CEQP to CMLP, net(3)	0.8	0.8	2.3	2.3
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable at CEQP	7.2		7.2		$ 0.0
Crestwood LTIP \| Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense	5.2	3.5	17.1	11.9
Crestwood LTIP \| Crestwood Holdings
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense	1.1	0.6	1.9	1.5
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged from Crestwood Holdings, net(4)	2.0	1.0	6.5	1.3
Tres Palacios Holdings LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged from Crestwood Holdings, net(4)	0.8	$ 0.8	2.6	$ 2.2
Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged from Crestwood Holdings, net(4)	3.7		7.0
Jackalope Gas Gathering Services, L.L.C.
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged from Crestwood Holdings, net(4)	$ 0.1		$ 0.3