Crestwood Equity Partners (CEQP+) 10-Q 6 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	May. 02, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Trading Symbol	CEQP
Entity Registrant Name	Crestwood Equity Partners LP
Entity Central Index Key	1,136,352
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		69,041,047
Crestwood Midstream Partners LP
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Entity Registrant Name	Crestwood Midstream Partners LP
Entity Central Index Key	1,304,464
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Assets
Cash	$ 1.1	$ 0.5
Accounts receivable	209.6	236.5
Inventory	26.6	44.5
Assets from price risk management activities	14.4	32.6
Prepaid expenses and other current assets	20.7	21.7
Total current assets	272.4	335.8
Property, plant and equipment	3,765.7	3,747.7
Less: accumulated depreciation and depletion	462.7	436.9
Property, plant and equipment, net	3,303	3,310.8
Intangible assets	975.8	975.8
Less: accumulated amortization	225.6	206.6
Intangible assets, net	750.2	769.2
Goodwill	975.8	1,085.5
Investment in unconsolidated affiliates (Note 4)	260.6	254.3
Other assets	8	7.2
Total assets	5,570	5,762.8
Current liabilities:
Accounts payable	119.1	144.1
Accrued expenses and other liabilities (Note 3)	96.8	105.6
Liabilities from price risk management activities	7.3	7.4
Current portion of long-term debt (Note 7)	0.9	1.1
Total current liabilities	224.1	258.2
Long-term debt, less current portion (Note 7)	2,530.8	2,501.8
Other long-term liabilities	48.2	47.5
Deferred income taxes	$ 8.3	$ 8.4
Commitments and contingencies (Note 10)
Partners’ capital (Note 9):
Crestwood Equity Partners LP partners’ capital (69,478,525 and 68,555,305 common and subordinated units issued and outstanding at March 31, 2016 and December 31, 2015)	$ 2,035.6	$ 2,227.6
Preferred units (62,122,562 and 60,718,245 units issued and outstanding at March 31, 2016 and December 31, 2015)	537.4	535.8
Total company partners’ capital	2,573	2,763.4
Interest of non-controlling partners in subsidiaries	185.6	183.5
Total partners’ capital	2,758.6	2,946.9
Total liabilities and partners’ capital	5,570	5,762.8
Crestwood Midstream Partners LP
Assets
Cash	0.8	0.1
Accounts receivable	209.6	236.5
Inventory	26.6	44.5
Assets from price risk management activities	14.4	32.6
Prepaid expenses and other current assets	18.9	19.9
Total current assets	270.3	333.6
Property, plant and equipment	4,095.7	4,077.7
Less: accumulated depreciation and depletion	581.3	552
Property, plant and equipment, net	3,514.4	3,525.7
Intangible assets	959.3	959.3
Less: accumulated amortization	216	197.9
Intangible assets, net	743.3	761.4
Goodwill	975.8	1,085.5
Investment in unconsolidated affiliates (Note 4)	260.6	254.3
Other assets	3	3.1
Total assets	5,767.4	5,963.6
Current liabilities:
Accounts payable	116.5	141.4
Accrued expenses and other liabilities (Note 3)	94.6	103.3
Liabilities from price risk management activities	7.3	7.4
Current portion of long-term debt (Note 7)	0.9	0.9
Total current liabilities	219.3	253
Long-term debt, less current portion (Note 7)	2,530.8	2,501.8
Other long-term liabilities	44.1	43.3
Deferred income taxes	0.6	0.4
Partners’ capital (Note 9):
Total company partners’ capital	2,787	2,981.6
Interest of non-controlling partners in subsidiaries	185.6	183.5
Total partners’ capital	2,972.6	3,165.1
Total liabilities and partners’ capital	$ 5,767.4	$ 5,963.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Limited Partners' Capital Account, Units Issued	69,478,525	68,555,305
Limited Partners' Capital Account, Units Outstanding	69,478,525	68,555,305
Preferred Units, Issued	62,122,562	60,718,245
Preferred Units, Outstanding	62,122,562	60,718,245

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Gathering and processing	$ 162.5	$ 260.9
Marketing, supply and logistics	206.5	277.2
Total product revenue	369	538.1
Gathering and processing	75.7	88.4
Storage and transportation	59.4	67.6
Marketing, supply and logistics	31.2	36.4
Related party (Note 13)	0.7	1
Total services revenues	167	193.4
Total revenues	536	731.5
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	175.4	258.2
Marketing, supply and logistics	166	242.2
Related party (Note 11)	4.3	8.3
Total product costs	345.7	508.7
Gathering and processing	0.1	0.2
Storage and transportation	2.9	5.3
Marketing, supply and logistics	14.7	15.5
Total service costs	17.7	21
Total costs of products/services sold	363.4	529.7
Expenses:
Operations and maintenance	41.8	50.6
General and administrative	23	27.5
Depreciation, amortization and accretion	62.3	74.2
Total Expenses	127.1	152.3
Loss on long-lived assets, net	0	(1)
Goodwill impairment	(109.7)	0
Operating income (loss)	(64.2)	48.5
Earnings from unconsolidated affiliates, net	6.5	3.4
Interest and debt expense, net	(36.1)	(33.6)
Other income, net	0.1	0.2
Income (loss) before income taxes	(93.7)	18.5
Provision for income taxes	0	0.4
Net income (loss)	(93.7)	18.1
Net Income (Loss) Attributable to Noncontrolling Interest	5.9	9.8
Net income (loss) attributable to parent	(99.6)	8.3
Net income (loss) attributable to preferred unit holders	1.6	0
Net income (loss) attributable to partners	(101.2)	8.3
Subordinated unitholders' interest in net income	0	0.2
Common unitholders' interest in net income (loss)	$ (101.2)	$ 8.1
Net income (loss) per limited partner unit:
Basic (in dollars per share)	$ (1.47)	$ 0.44
Diluted (in dollars per share)	$ (1.47)	$ 0.44
Weighted-average limited partners’ units outstanding (in thousands):
Basic (units)	68,912	18,280
Dilutive units (units)	0	439
Diluted (units)	68,912	18,719
Crestwood Midstream Partners LP
Revenues:
Gathering and processing	$ 162.5	$ 260.9
Marketing, supply and logistics	206.5	277.2
Total product revenue	369	538.1
Gathering and processing	75.7	88.4
Storage and transportation	59.4	67.6
Marketing, supply and logistics	31.2	36.4
Related party (Note 13)	0.7	1
Total services revenues	167	193.4
Total revenues	536	731.5
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	175.4	258.2
Marketing, supply and logistics	166	242.2
Related party (Note 11)	4.3	8.3
Total product costs	345.7	508.7
Gathering and processing	0.1	0.2
Storage and transportation	2.9	5.3
Marketing, supply and logistics	14.7	15.5
Total service costs	17.7	21
Total costs of products/services sold	363.4	529.7
Expenses:
Operations and maintenance	41.7	50.6
General and administrative	22.2	25.6
Depreciation, amortization and accretion	64.9	68.8
Total Expenses	128.8	145
Loss on long-lived assets, net	0	(0.8)
Goodwill impairment	(109.7)	0
Operating income (loss)	(65.9)	56
Earnings from unconsolidated affiliates, net	6.5	3.4
Interest and debt expense, net	(36.1)	(29.9)
Income (loss) before income taxes	(95.5)	29.5
Provision for income taxes	(0.2)	0.4
Net income (loss)	(95.3)	29.1
Net Income (Loss) Attributable to Noncontrolling Interest	5.9	5.6
Net income (loss) attributable to parent	(101.2)	23.5
Net income (loss) attributable to preferred unit holders	0	9.2
Net income (loss) attributable to partners	$ (101.2)	$ 14.3

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (93.7)	$ 18.1
Change in fair value of Suburban Propane Partners, L.P. units	0.8	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(92.9)	18.1
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	5.9	9.8
Comprehensive income (loss) attributable to Crestwood Equity Partners LP	$ (98.8)	$ 8.3

Consolidated Statement of Partn

Consolidated Statement of Partners' Capital - USD ($) $ in Millions	Total	Preferred Units	Common unit	Non-Controlling Partners	Partners' Capital	Crestwood Midstream Partners LP	Crestwood Midstream Partners LPCommon unit	Crestwood Midstream Partners LPNon-Controlling Partners	Crestwood Midstream Partners LPPartners' Capital	Common Units	Subordinated Units
Common Unit, Outstanding										68,200,000	400,000
Preferred Units, Outstanding	60,718,245
Preferred Stock Dividends, Shares	1,400,000
Balance at December 31, 2015 at Dec. 31, 2015	$ 2,763.4	$ 535.8	$ 2,227.6	$ 183.5	$ 2,946.9	$ 2,981.6	$ 2,981.6	$ 183.5	$ 3,165.1
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		0	(95.6)	(3.8)	(99.4)	101	(97.2)	(3.8)	(101)
Change in fair value of Suburban Propane Partners, L.P. units	0.8	0	0.8	0	0.8
Unit-based compensation charges		0	4.5	0	4.5		4.5	0	4.5
Partners' Capital Account, Units, Unit-based Compensation										900,000
Taxes paid for unit-based compensation vesting		0	(0.6)	0	(0.6)		(0.6)	0	(0.6)
Other		0	0.1	0	0.1		(0.1)	0	(0.1)
Net income (loss) attributable to parent	(99.6)					(101.2)	(101.2)
Net income (loss) attributable to preferred unit holders	1.6	1.6				0
Net income (loss) attributable to partners	(101.2)		(101.2)			(101.2)
Net Income (Loss) Attributable to Noncontrolling Interest	5.9			5.9		5.9		5.9
Net income (loss)	(93.7)				(93.7)	(95.3)			(95.3)
Balance at March 31, 2016 at Mar. 31, 2016	$ 2,573	$ 537.4	$ 2,035.6	$ 185.6	$ 2,758.6	$ 2,787	$ 2,787	$ 185.6	$ 2,972.6
Common Unit, Outstanding										69,100,000	400,000
Preferred Units, Outstanding	62,122,562

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net income (loss)	$ (93.7)	$ 18.1
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	62.3	74.2
Amortization of debt-related deferred costs, discounts and premiums	1.7	2.1
Market adjustment on interest rate swaps	0	(0.3)
Unit-based compensation charges	4.5	5.8
Loss on long-lived assets, net	0	1
Goodwill impairment	109.7	0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(0.8)	(3.4)
Deferred income taxes	(0.1)	(0.9)
Other	0.1	0.4
Changes in operating assets and liabilities	50.6	59.6
Net cash provided by operating activities	134.3	156.6
Investing activities
Purchases of property, plant and equipment	(55.6)	(47.4)
Investment in unconsolidated affiliates	(5.5)	(18.1)
Proceeds from sale of assets	0.8	0.5
Other	0	(0.2)
Net cash used in investing activities	(60.3)	(65.2)
Financing activities
Proceeds from the issuance of long-term debt	313.5	1,252.7
Principal payments on long-term debt	(286.2)	(1,169.9)
Payments on capital leases	(0.5)	(0.7)
Payments for debt-related deferred costs	(0.1)	(11.1)
Distributions to partners	95.6	25.8
Distributions paid to non-controlling partners	(3.8)	(74.3)
Taxes paid for unit-based compensation vesting	(0.6)	(3.1)
Other	(0.1)	(0.3)
Net cash used in financing activities	(73.4)	(32.5)
Net change in cash	0.6	58.9
Cash at beginning of period	0.5
Cash at end of period	1.1	67.7
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	(9.7)	(9.1)
Crestwood Midstream Partners LP
Operating activities
Net income (loss)	(95.3)	29.1
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	64.9	68.8
Amortization of debt-related deferred costs, discounts and premiums	1.7	1.9
Unit-based compensation charges	4.5	5.2
Loss on long-lived assets, net	0	0.8
Goodwill impairment	109.7	0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(0.8)	(3.4)
Deferred income taxes	0.2	0.1
Other	0.1	0
Changes in operating assets and liabilities	50.7	3.2
Net cash provided by operating activities	135.7	105.7
Investing activities
Purchases of property, plant and equipment	(55.6)	(47.4)
Investment in unconsolidated affiliates	(5.5)	(17.9)
Proceeds from sale of assets	0.8	0.5
Other	0	(0.2)
Net cash used in investing activities	(60.3)	(65)
Financing activities
Proceeds from the issuance of long-term debt	313.5	1,114.6
Principal payments on long-term debt	(286)	(970.4)
Payments on capital leases	(0.5)	(0.7)
Payments for debt-related deferred costs	(0.1)	(11.1)
Distributions to partners	(101)	(111.4)
Distributions to partners	101	111.4
Distributions paid to non-controlling partners	0	0
Taxes paid for unit-based compensation vesting	(0.6)	(1.7)
Other	0	(0.2)
Net cash used in financing activities	(74.7)	19.1
Net change in cash	0.7	59.8
Cash at beginning of period	0.1	7.6
Cash at end of period	0.8	67.4
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	$ (9.7)	$ (9.1)

Organization and Business Descr

Organization and Business Description	3 Months Ended
	Mar. 31, 2016
Disclosure Partnership Organization And Basis Of Presentation Narrative [Abstract]
Organization and Business Description	Business Description The accompanying notes to the consolidated financial statements apply to Crestwood Equity Partners LP and Crestwood Midstream Partners LP, unless otherwise indicated. References in this report to “we,” “us,” “our,” “ours,” “our company,” the “partnership,” the “Company,” "Crestwood Equity," “CEQP,” and similar terms refer to either Crestwood Equity Partners LP itself or Crestwood Equity Partners and its consolidated subsidiaries, as the context requires. Unless otherwise indicated, references to "Crestwood Midstream" and "CMLP" refer to Crestwood Midstream Partners LP and its consolidated subsidiaries. The accompanying consolidated financial statements and related notes should be read in conjunction with our 2015 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 29, 2016. The financial information as of March 31, 2016 , and for the three months ended March 31, 2016 and 2015 , is unaudited. The consolidated balance sheets as of December 31, 2015 , were derived from the audited balance sheets filed in our 2015 Annual Report on Form 10-K. Organization Crestwood Equity is a publicly-traded (NYSE: CEQP) Delaware limited partnership that develops, acquires, owns or controls, and operates primarily fee-based assets and operations within the energy midstream sector. We provide broad-ranging infrastructure solutions across the value chain to service premier liquids-rich natural gas and crude oil shale plays across the United States. We own and operate a diversified portfolio of crude oil and natural gas gathering, processing, storage and transportation assets and connect fundamental energy supply with energy demand across North America. Crestwood Equity is a holding company and all of its consolidated operating assets are owned by or through its wholly-owned subsidiary, Crestwood Midstream, a Delaware limited partnership. Description of Business In conjunction with the Simplification Merger (as defined in Note 2), we modified our segments and our financial statements to reflect three operating and reporting segments: (i) gathering and processing operations; (ii) storage and transportation operations; and (iii) marketing, supply and logistics operations (formerly NGL and crude services operations). Consequently, the results of our Arrow operations are now reflected in our gathering and processing operations for all periods presented and our COLT and Powder River Basin Industrial Complex, LLC (PRBIC) operations are now reflected in our storage and transportation operations for all periods presented. These respective operations were previously included in our NGL and crude services operations. For a further description of our operating and reporting segments, see our 2015 Annual Report on Form 10-K.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and include the accounts of all consolidated subsidiaries after the elimination of all intercompany accounts and transactions. In management’s opinion, all necessary adjustments to fairly present our results of operations, financial position and cash flows for the periods presented have been made and all such adjustments are of a normal and recurring nature. Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been omitted pursuant to the rules and regulations of the SEC. In May 2015, CEQP, Crestwood Midstream and certain of their affiliates entered into a definitive agreement under which Crestwood Midstream would merge with a wholly-owned subsidiary of CEQP, with Crestwood Midstream surviving as a wholly-owned subsidiary of CEQP (the Simplification Merger). In conjunction with the closing of the Simplification Merger on September 30, 2015, Crestwood Equity contributed 100% of its interest in Crestwood Operations LLC (Crestwood Operations) to Crestwood Midstream. As a result of this equity transaction, Crestwood Midstream controls the operating and financial decisions of Crestwood Operations. Crestwood Midstream accounted for this transaction as a reorganization of entities under common control and the accounting standards related to such transactions requires Crestwood Midstream to retroactively adjust Crestwood Midstream's historical results to reflect the operations of Crestwood Operations as being acquired on June 19, 2013, the date in which Crestwood Midstream and Crestwood Operations came under common control. Prior to the Simplification Merger, Crestwood Equity consolidated the results of Crestwood Operations in its financial statements and as such, this transaction had no impact on its historical financial statements. Beginning in the third quarter of 2015, we changed our income statement to classify the revenues associated with the products to which we take title as product revenues in our consolidated statement of operations. As such, we reclassified our historical consolidated statement of operations for three months ended March 31, 2015 to reflect this change. We classify all other revenues as service revenues in our consolidated statement of operations. Significant Accounting Policies There were no material changes in our significant accounting policies from those described in our 2015 Annual Report on Form 10-K. Below is an update of our accounting policies related to Property, Plant and Equipment and Goodwill. Property, Plant and Equipment Property, plant and equipment is recorded at its original cost of construction or, upon acquisition, at the fair value of the assets acquired. The accounting predecessor of Crestwood Equity acquired the accounting predecessor of Crestwood Midstream in October 2010, and accordingly recorded its acquisition of Crestwood Midstream's property, plant and equipment related to its gathering and processing assets in the Barnett Shale at fair value on that date. The resulting increase to Crestwood Midstream's property, plant and equipment was not pushed down by Crestwood Equity to Crestwood Midstream's balance sheet, as permitted by GAAP. We evaluate our long-lived assets for impairment whenever events or changes in circumstances indicate that the amount of an asset may not be recoverable. If such events or changes in circumstances are present, a loss is recognized if the carrying value of the asset is in excess of the sum of the undiscounted cash flows expected to result from the use of the asset and its eventual disposition. During 2015, Crestwood Equity recorded a $354.4 million impairment of its property, plant and equipment related to its gathering and processing assets in the Barnett Shale. Crestwood Midstream did not record an impairment of its property, plant and equipment related to its gathering and processing assets in the Barnett Shale as the sum of the undiscounted cash flows expected to result from the use of the assets and their eventual disposition exceeded the carrying value of the property, plant and equipment by over 30% as of March 31, 2016 and December 31, 2015. As a result, Crestwood Midstream's property, plant and equipment exceeds Crestwood Equity's property, plant and equipment related to its gathering and processing assets in the Barnett Shale as of March 31, 2016 and December 31, 2015. Goodwill Our goodwill represents the excess of the amount we paid for a business over the fair value of the net identifiable assets acquired. We evaluate goodwill for impairment annually on December 31, and whenever events indicate that it is more likely than not that the fair value of a reporting unit could be less than its carrying amount. This evaluation requires us to compare the fair value of each of our reporting units to its carrying value (including goodwill). If the fair value exceeds the carrying amount, goodwill of the reporting unit is not considered impaired. We estimate the fair value of our reporting units based on a number of factors, including discount rates, projected cash flows, and the potential value we would receive if we sold the reporting unit. We also compare the total fair value of our reporting units to our overall enterprise value, which considers the market value for our common and preferred units. Estimating projected cash flows requires us to make certain assumptions as it relates to the future operating performance of each of our reporting units (which includes assumptions, among others, about estimating future operating margins and related future growth in those margins, contracting efforts and the cost and timing of facility expansions) and assumptions related to our customers, such as their future capital and operating plans and their financial condition. When considering operating performance, various factors are considered such as current and changing economic conditions and the commodity price environment, among others. Due to the imprecise nature of these projections and assumptions, actual results can and often do, differ from our estimates. If the assumptions embodied in the projections prove inaccurate, we could incur a future impairment charge. In addition, the use of the income approach to determine the fair value of our reporting units (see further discussion of the use of the income approach below) could result in a different fair value if we had utilized a market approach, or a combination thereof. We acquired substantially all of our reporting units in 2013, 2012 and 2011, which required us to record the assets, liabilities and goodwill of each of those reporting units at fair value on the date they were acquired. As a result, any level of decrease in the forecasted cash flows of these businesses or increases in the discount rates utilized to value those businesses from their respective acquisition dates would likely result in the fair value of the reporting unit falling below the carrying value of the reporting unit, and could result in an assessment of whether that reporting unit's goodwill is impaired. Commodity prices have continued to decline since 2014, and that decline has adversely impacted forecasted cash flows, discount rates and stock/unit prices for most companies in the midstream industry, including us. In particular, due to the significant, sustained decrease in the market price of our common units from January 1, 2016 to March 31, 2016, we evaluated the carrying value of our reporting units and determined it was more likely than not that the goodwill associated with several of our reporting units was impaired as of March 31, 2016 . As a result of further analysis of the fair value of our reporting units, we recorded goodwill impairments on several of our reporting units during the three months ended March 31, 2016 . The following table summarizes the goodwill of our various reporting units (in millions): Goodwill at December 31, 2015 Goodwill Impairments during the Three Months Ended Goodwill at March 31, 2016 March 31, 2016 Gathering and Processing Marcellus $ 8.6 $ 8.6 $ — Arrow 45.9 — 45.9 Storage and Transportation Northeast Storage and Transportation 726.3 — 726.3 COLT 44.9 13.7 31.2 Marketing, Supply and Logistics Supply and Logistics 167.2 65.5 101.7 Storage and Terminals 50.5 14.1 36.4 US Salt 12.6 — 12.6 Trucking 29.5 7.8 21.7 Total $ 1,085.5 $ 109.7 $ 975.8 The goodwill impairments recorded during three months ended March 31, 2016 primarily resulted from increasing the discount rates utilized in determining the fair value of the reporting units considering the significant, sustained decrease in the market price of our common units and the continued decrease in commodity prices and its impact on the midstream industry and our customers. Our COLT, Supply and Logistics, Storage and Terminals and Trucking reporting units also experienced impairments during 2015 based on the impact that the prolonged low commodity price environment is expected to have on the demand for future services provided by these operations. Despite increases in the operating results of these reporting units from 2013 to 2015, in light of our modified expectations, we revised our cash flow forecasts for these operations at December 31, 2015 in light of our current view that these operations will not grow as fast or as significantly in the future as originally forecasted in 2013 when the assets were acquired. The remaining goodwill related to these reporting units represents the fair value of the goodwill as of March 31, 2016 , which is a Level 3 fair value measurement. We utilized the income approach to determine the fair value of our reporting units given the limited availability of comparable market-based transactions as of March 31, 2016 and December 31, 2015, and we utilized discount rates ranging from 10% to 19% in applying the income approach to determine the fair value of our reporting units with goodwill as of March 31, 2016 . We also used the market approach to validate the fair value of our Northeast Storage and Transportation reporting unit given the value to be received related to the anticipated Stagecoach joint venture transaction further described in Note 14. Deferred Financing Costs Deferred financing costs represent costs associated with obtaining long-term financing and are amortized over the term of the related debt using a method which approximates the effective interest method and has a weighted average life of six years. Effective January 1, 2016, we adopted the provisions of Accounting Standards Update (ASU) 2015-03, Interest - Imputation of Interest (Subtopic 835-30), which requires us to classify our net deferred financing costs of $39.2 million and $40.9 million as a reduction of long-term debt on our consolidated balance sheets at March 31, 2016 and December 31, 2015 . Such costs were previously reflected as intangible assets on our consolidated balance sheets. Consolidations Effective 1, 2016, we adopted the provisions of ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis , which provides additional guidance on the consolidation of limited partnerships and on the evaluation of variable interest entities. The adoption of this accounting standard did not have a material impact on our consolidated financial statements. New Accounting Pronouncements Issued But Not Yet Adopted As of March 31, 2016 , the following accounting standards had not yet been adopted by us: In May 2014, the Financial Accounting Standards Board (FASB) issued ASU 2014-09, Revenue from Contracts with Customers, which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance. We expect to adopt the provisions of this standard effective January 1, 2018 and are currently evaluating the impact that this standard will have on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which revises the accounting for leases by requiring certain leases to be recognized as assets and liabilities on the balance sheet, and requiring companies to disclose additional information about their leasing arrangements. We expect to adopt the provisions of this standard effective January 1, 2019 and are currently evaluating the impact that this standard will have on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718):Improvements to Employee Share-Based Payment Accounting , which is intended to improve the accounting for employee share-based payments. The ASU simplifies several aspects of the accounting for share-based payment award transactions, including the classification of awards as either equity or liabilities and presentation on the statement of cash flows. We expect to adopt the provisions of this standard effective January 1, 2017 and are currently evaluating the impact that this standard may have on our consolidated financial statements.

Certain Balance Sheet Informati

Certain Balance Sheet Information	3 Months Ended
	Mar. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Certain Balance Sheet Information	Certain Balance Sheet Information Accrued expenses and other liabilities consisted of the following at March 31, 2016 and December 31, 2015 ( in millions ): CEQP CMLP March 31, December 31, March 31, December 31, 2016 2015 2016 2015 Accrued expenses $ 30.7 $ 46.4 $ 29.0 $ 44.1 Accrued property taxes 5.4 4.8 5.4 4.8 Accrued product purchases payable 1.4 1.5 1.4 1.5 Tax payable 1.3 0.5 0.8 0.5 Interest payable 35.6 26.2 35.6 26.2 Accrued additions to property, plant and equipment 5.3 10.4 5.3 10.4 Capital leases 1.4 1.6 1.4 1.6 Deferred revenue 15.7 14.2 15.7 14.2 Total accrued expenses and other liabilities $ 96.8 $ 105.6 $ 94.6 $ 103.3

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	3 Months Ended
	Mar. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Net Investments and Earnings Our net investments in and earnings from our unconsolidated affiliates are as follows ( in millions, unless otherwise stated ): Ownership Percentage Investment Earnings from Unconsolidated Affiliates March 31, March 31, December 31, Three Months Ended March 31, 2016 2016 2015 2016 2015 Jackalope Gas Gathering Services, L.L.C. (1) 50.00 % (4) $ 202.4 $ 202.4 $ 5.1 $ 2.5 Tres Palacios Holdings LLC (2) 50.01 % 43.1 36.8 0.8 0.9 Powder River Basin Industrial Complex, LLC (3) 50.01 % 15.1 15.1 0.6 — Total $ 260.6 $ 254.3 $ 6.5 $ 3.4 (1) As of March 31, 2016 , our equity in the underlying net assets of Jackalope Gas Gathering Services, L.L.C. (Jackalope) exceeded our investment balance by approximately $0.9 million . We amortize this amount over 20 years, which represents the life of Jackalope’s gathering agreement with Chesapeake Energy Corporation (Chesapeake), and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of less than $0.1 million and $0.8 million for the three months ended March 31, 2016 and 2015 . Our Jackalope investment is included in our gathering and processing segment. (2) As of March 31, 2016 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $28.8 million . We amortize this amount over the life of the Tres Palacios Gas Storage LLC (Tres Palacios) sublease agreement, and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of $0.3 million during each of the three months ended March 31, 2016 and 2015 . Our Tres Holdings investment is included in our storage and transportation segment. (3) As of March 31, 2016 , our equity in the underlying net assets of PRBIC exceeded our investment balance by approximately $23.0 million . We amortize this amount over the life of PRBIC's property, plant and equipment and its agreement with Chesapeake, and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of approximately $0.4 million for the three months ended March 31, 2016 . Our PRBIC investment is included in our storage and transportation segment. (4) Excludes non-controlling interests related to our investment in Jackalope. See Note 9 for a further discussion of our non-controlling interest related to our investment in Jackalope. Distributions and Contributions Jackalope. Jackalope is required, within 30 days following the end of each quarter, to make quarterly distributions of its available cash to its members based on their respective ownership percentage. During the three months ended March 31, 2016 , we received cash distributions of approximately $5.1 million from Jackalope. During the three months ended March 31, 2015 , Jackalope did not make any distributions to its members. In May 2016, we received a cash distribution of approximately $7.0 million from Jackalope. During the three months ended March 31, 2015 , we contributed approximately $8.8 million to Jackalope. Tres Holdings. Tres Holdings is required, within 30 days following the end of each quarter, to make quarterly distributions of its available cash (as defined in its limited liability company agreement) to its members based on their respective ownership percentage. During the three months ended March 31, 2016 and 2015 , Tres Holdings did not make any distributions to its members. In April 2016, we received a cash distribution of approximately $4.1 million from Tres Holdings. During the three months ended March 31, 2016 and 2015 , we contributed approximately $5.5 million and $5.7 million to Tres Holdings. PRBIC. PRBIC is required to make quarterly distributions of its available cash to its members based on their respective ownership percentage. During the three months ended March 31, 2016 and 2015 , we received cash distributions of approximately $0.6 million and $0.3 million from PRBIC. During the three months ended March 31, 2015 , we contributed approximately $3.7 million to PRBIC.

Risk Management

Risk Management	3 Months Ended
	Mar. 31, 2016
Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]
Risk Management	Risk Management We are exposed to certain market risks related to our ongoing business operations. These risks include exposure to changing commodity prices. We utilize derivative instruments to manage our exposure to fluctuations in commodity prices, which is discussed below. Additional information related to our derivatives is discussed in Note 6 . Commodity Derivative Instruments and Price Risk Management Risk Management Activities We sell NGLs to energy related businesses and may use a variety of financial and other instruments including forward contracts involving physical delivery of NGLs, heating oil and crude oil. We periodically enter into offsetting positions to economically hedge against the exposure our customer contracts create. Certain of these contracts and positions are derivative instruments. We do not designate any of our commodity-based derivatives as hedging instruments for accounting purposes. Our commodity-based derivatives are reflected at fair value in the consolidated balance sheets, and changes in the fair value of these derivatives that impact the consolidated statements of operations are reflected in costs of product/services sold. During the three months ended March 31, 2016 and 2015 , the impact to the statement of operations related to our commodity-based derivatives reflected in costs of product/services sold was a gain of $1.2 million and a loss of $2.9 million . We attempt to balance our contractual portfolio in terms of notional amounts and timing of performance and delivery obligations. This balance in the contractual portfolio significantly reduces the volatility in costs of product/services sold related to these instruments. Commodity Price and Credit Risk Notional Amounts and Terms The notional amounts and terms of our derivative financial instruments include the following at March 31, 2016 and December 31, 2015 ( in millions ): March 31, 2016 December 31, 2015 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, crude and heating oil ( barrels ) 10.6 11.9 9.1 10.9 Notional amounts reflect the volume of transactions, but do not represent the amounts exchanged by the parties to the financial instruments. Accordingly, notional amounts do not reflect our monetary exposure to market or credit risks. All contracts subject to price risk had a maturity of 36 months or less; however, 81% of the contracted volumes will be delivered or settled within 12 months . Credit Risk Inherent in our contractual portfolio are certain credit risks. Credit risk is the risk of loss from nonperformance by suppliers, customers or financial counterparties to a contract. We take an active role in managing credit risk and have established control procedures, which are reviewed on an ongoing basis. We attempt to minimize credit risk exposure through credit policies and periodic monitoring procedures as well as through customer deposits, letters of credit and entering into netting agreements that allow for offsetting counterparty receivable and payable balances for certain financial transactions, as deemed appropriate. The counterparties associated with our assets from price risk management activities as of March 31, 2016 and December 31, 2015 were energy marketers and propane retailers, resellers and dealers. Certain of our derivative instruments have credit limits that require us to post collateral. The amount of collateral required to be posted is a function of the net liability position of the derivative as well as our established credit limit with the respective counterparty. If our credit rating were to change, the counterparties could require us to post additional collateral. The amount of additional collateral that would be required to be posted would vary depending on the extent of change in our credit rating as well as the requirements of the individual counterparty. The aggregate fair value of all commodity derivative instruments with credit-risk-related contingent features that were in a liability position at March 31, 2016 and December 31, 2015 was $3.8 million and $3.3 million . At March 31, 2016 , we posted $0.3 million of collateral in the normal course of business. We did not post collateral at December 31, 2015 for our commodity derivative instruments with credit-risk-related contingent features. In addition, at March 31, 2016 and December 31, 2015 , we had a New York Mercantile Exchange (NYMEX) related net derivative liability position of $3.1 million and $20.8 million , for which we posted $9.5 million and $26.7 million of cash collateral in the normal course of business. At March 31, 2016 and December 31, 2015 , we also received collateral of $7.1 million and $16.8 million in the normal course of business. All collateral amounts have been netted against the asset or liability with the respective counterparty and are reflected in our consolidated balance sheets as assets and liabilities from price risk management activities.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Fair Value Measurements	Fair Value Measurements The accounting standards for fair value measurement establish a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy are as follows: • Level 1—Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and US government treasury securities. • Level 2—Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date. Level 2 includes those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace. Instruments in this category include non-exchange-traded derivatives such as over the counter (OTC) forwards, options and physical exchanges. • Level 3—Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. Cash and Cash Equivalents, Accounts Receivable and Accounts Payable As of March 31, 2016 and December 31, 2015 , the carrying amounts of cash, accounts receivable and accounts payable represent fair value based on the short-term nature of these instruments. Credit Facility The fair value of the amount outstanding under our CMLP credit facility approximates its carrying amount as of March 31, 2016 and December 31, 2015 , due primarily to the variable nature of the interest rate of the instrument, which is considered a Level 2 fair value measurement. Senior Notes We estimate the fair value of our senior notes primarily based on quoted market prices for the same or similar issuances (representing a Level 2 fair value measurement). The following table reflects the carrying value and fair value of our CMLP senior notes ( in millions ): March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Crestwood Midstream 2020 Senior Notes $ 503.2 $ 399.8 $ 503.3 $ 382.3 Crestwood Midstream 2022 Senior Notes $ 600.0 $ 446.0 $ 600.0 $ 437.4 Crestwood Midstream 2023 Senior Notes $ 700.0 $ 519.8 $ 700.0 $ 491.8 Financial Assets and Liabilities As of March 31, 2016 and December 31, 2015 , we held certain assets and liabilities that are required to be measured at fair value on a recurring basis, which include our derivative instruments related to heating oil, crude oil, and NGLs. Our derivative instruments consist of forwards, swaps, futures, physical exchanges and options. Certain of our derivative instruments are traded on the NYMEX. These instruments have been categorized as Level 1. Our derivative instruments also include OTC contracts, which are not traded on a public exchange. The fair values of these derivative instruments are determined based on inputs that are readily available in public markets or can be derived from information available in publicly quoted markets. These instruments have been categorized as Level 2. Our OTC options are valued based on the Black Scholes option pricing model that considers time value and volatility of the underlying commodity. The inputs utilized in the model are based on publicly available information as well as broker quotes. These options have been categorized as Level 2. Our financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels. The following tables set forth by level within the fair value hierarchy, our financial instruments that were accounted for at fair value on a recurring basis at March 31, 2016 and December 31, 2015 ( in millions ): March 31, 2016 Fair Value of Derivatives Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Recorded in Balance Sheet Assets Assets from price risk management $ 0.4 $ 32.2 $ — $ 32.6 $ (19.7 ) $ 1.5 $ 14.4 Suburban Propane Partners, L.P. units (2) 4.2 — — 4.2 — — 4.2 Total assets at fair value $ 4.6 $ 32.2 $ — $ 36.8 $ (19.7 ) $ 1.5 $ 18.6 Liabilities Liabilities from price risk management $ 0.2 $ 26.6 $ — $ 26.8 $ (19.7 ) $ 0.2 $ 7.3 Total liabilities at fair value $ 0.2 $ 26.6 $ — $ 26.8 $ (19.7 ) $ 0.2 $ 7.3 December 31, 2015 Fair Value of Derivatives Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Recorded in Balance Sheet Assets Assets from price risk management $ 0.5 $ 57.8 $ — $ 58.3 $ (13.7 ) $ (12.0 ) $ 32.6 Suburban Propane Partners, L.P. units (2) 3.4 — — 3.4 — — 3.4 Total assets at fair value $ 3.9 $ 57.8 $ — $ 61.7 $ (13.7 ) $ (12.0 ) $ 36.0 Liabilities Liabilities from price risk management $ 0.2 $ 41.3 $ — $ 41.5 $ (13.7 ) $ (20.4 ) $ 7.4 Total liabilities at fair value $ 0.2 $ 41.3 $ — $ 41.5 $ (13.7 ) $ (20.4 ) $ 7.4 (1) Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions as well as cash collateral held or placed with the same counterparties. (2) Amount is reflected in other assets on CEQP's consolidated balance sheets.

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2016
Text Block [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following at March 31, 2016 and December 31, 2015 ( in millions ): March 31, December 31, Credit Facility $ 762.8 $ 735.0 2020 Senior Notes 500.0 500.0 Fair value adjustment of 2020 Senior Notes 3.2 3.3 2022 Senior Notes 600.0 600.0 2023 Senior Notes 700.0 700.0 Other 4.9 5.3 Less: deferred financing costs, net 39.2 40.9 Total Crestwood Midstream debt 2,531.7 2,502.7 Other — 0.2 Total Crestwood Equity debt 2,531.7 2,502.9 Less: current portion 0.9 1.1 Total long-term debt, less current portion $ 2,530.8 $ 2,501.8 Crestwood Midstream Credit Facility At March 31, 2016 , Crestwood Midstream had $268.2 million of available capacity under its credit facility considering the most restrictive debt covenants in its credit agreement. At March 31, 2016 and December 31, 2015 , Crestwood Midstream's outstanding standby letters of credit were $60.7 million and $62.2 million . Borrowings under the CMLP credit facility accrue interest at prime or Eurodollar based rates plus applicable spreads, which resulted in interest rates between 2.94% and 5.00% at March 31, 2016 and 2.70% and 5.00% at December 31, 2015. The weighted-average interest rate as of March 31, 2016 and December 31, 2015 was 2.96% and 2.70% . Crestwood Midstream is required under its credit agreement to maintain a net debt to consolidated EBITDA ratio (as defined in its credit agreement) of not more than 5.50 to 1.0, a consolidated EBITDA to consolidated interest expense ratio (as defined in its credit agreement) of not less than 2.50 to 1.0, and a senior secured leverage ratio (as defined in its credit agreement) of not more than 3.75 to 1.0. At March 31, 2016 , the net debt to consolidated EBITDA was approximately 4.98 to 1.0, the consolidated EBITDA to consolidated interest expense was approximately 3.77 to 1.0, and the senior secured leverage ratio was 1.48 to 1.0. Crestwood Midstream Senior Notes On March 7, 2016, Crestwood Midstream filed a registration statement with the SEC under which it plans to offer to exchange $700.0 million of its 6.25% unsecured Senior Notes due 2023 (2023 Senior Notes) for any and all outstanding notes. The terms of the exchange notes are substantially identical to the terms of the 2023 Senior Notes, except that the exchange notes will be freely tradable. Crestwood Midstream issued the 2023 Senior Notes in March 2015. The net proceeds from this offering of approximately $688.3 million were used to pay down borrowings under the Crestwood Midstream $1.0 billion credit facility and for Crestwood Midstream’s general partnership purposes. At March 31, 2016 , Crestwood Midstream was in compliance with all of its debt covenants applicable to the CMLP credit facility and its senior notes.

Earnings Per Limited Partner Un

Earnings Per Limited Partner Unit	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Limited Partner Unit	Earnings Per Limited Partner Unit Our net income (loss) attributable to Crestwood Equity Partners is allocated to the subordinated and limited partner unitholders based on their ownership percentage after giving effect to net income attributable to the Class A preferred units. We calculate basic net income per limited partner unit using the two-class method. Diluted net income per limited partner unit is computed using the treasury stock method, which considers the impact to net income attributable to Crestwood Equity Partners and limited partner units from the potential issuance of limited partner units. We exclude potentially dilutive securities from the determination of diluted earnings per unit (as well as their related income statement impacts) when their impact on net income attributable to Crestwood Equity Partners per limited partner unit is anti-dilutive. During the three months ended March 31, 2016 , we excluded a weighted-average of 6,212,256 common units (representing preferred units), a weighted-average of 438,789 common units (representing subordinated units), and a weighted-average of 19,262,780 common units (representing Crestwood Niobrara's preferred units). See Note 9 for additional information regarding the potential conversion of our preferred units and Crestwood Niobrara's preferred units to common units. There were no units excluded from our dilutive earnings per unit as we did not have any anti-dilutive units for the three months ended March 31, 2015.

Partners' Capital

Partners' Capital	3 Months Ended
	Mar. 31, 2016
Statement of Partners' Capital [Abstract]
Partners' Capital	Partners’ Capital Distributions Crestwood Equity Limited Partners. A summary of CEQP's limited partner quarterly cash distributions for the three months ended March 31, 2016 and 2015 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2016 February 5, 2016 February 12, 2016 $ 1.375 $ 95.6 2015 February 6, 2015 February 13, 2015 $ 1.375 $ 25.8 On April 21, 2016 , we declared a distribution of $0.60 per limited partner unit to be paid on May 13, 2016 , to unitholders of record on May 6, 2016 with respect to the first quarter of 2016 . Preferred Unit Holders . In conjunction with the closing of the Simplification Merger, the CMLP Class A Preferred Units were exchanged for new preferred units of the Company (the Preferred Units) with substantially similar terms and conditions to those of the CMLP Preferred Units. We are required to make quarterly distributions to our preferred unitholders. On February 12, 2016, we issued 1,404,317 Preferred Units to our preferred unitholders for the quarter ended December 31, 2015 in lieu of paying a cash distribution of $12.8 million . On April 21, 2016 , the board of directors of our general partner authorized the issuance of 1,436,797 Preferred Units to our preferred unit holders for the quarter ended March 31, 2016 in lieu of paying a cash distribution of $13.1 million . Crestwood Midstream Prior to the Simplification Merger, the Company indirectly owned a non-economic general partnership interest in Crestwood Midstream and 100% of its incentive distribution rights (IDRs). Crestwood Midstream was also a publicly-traded limited partnership with common units listed on the NYSE. However, as a result of Crestwood Midstream's completion of the Simplification Merger on September 30, 2015, its common units ceased to be listed on the NYSE, the IDRs were eliminated and Crestwood Midstream became a wholly-owned subsidiary of the Company. During the three months ended March 31, 2016 and 2015 , Crestwood Midstream made distributions of $97.2 million and $26.6 million to Crestwood Equity. During the three months ended March 31, 2015 , Crestwood Midstream paid a cash distribution to its general partner (representing IDRs and distributions related to common units held by the general partner) of approximately $10.5 million . Limited Partners . The following table presents quarterly cash distributions paid to Crestwood Midstream's limited partners (excluding distributions paid to its general partner on its common units held) during the three months ended March 31, 2015 . Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) February 6, 2015 February 13, 2015 $ 0.41 $ 74.3 Non-Controlling Partners Crestwood Midstream Class A Preferred Units As discussed, in conjunction with the closing of the Simplification Merger, the CMLP Class A Preferred Units were exchanged for new preferred units of Crestwood Equity. Prior to the Simplification Merger, Crestwood Equity classified the CMLP Class A Preferred Units as a component of Interest of Non-Controlling Partners on its consolidated balance sheet. Crestwood Niobrara Preferred Interest Crestwood Niobrara issued a preferred interest to a subsidiary of General Electric Capital Corporation and GE Structured Finance, Inc. (collectively, GE) in conjunction with the acquisition of its investment in Jackalope, which is reflected as non-controlling interest in our consolidated financial statements. Net Income (Loss) Attributable to Non-Controlling Partners The components of net income (loss) attributable to non-controlling partners for the three months ended March 31, 2016 and 2015 , are as follows (in millions) : Three Months Ended March 31, 2016 2015 Crestwood Niobrara preferred interests $ 5.9 $ 5.6 CMLP net income attributable to non-controlling partners 5.9 5.6 Crestwood Midstream limited partner interests — (5.0 ) Crestwood Midstream Class A preferred units — 9.2 CEQP net income attributable to non-controlling partners $ 5.9 $ 9.8 Distributions to Non-Controlling Partners Crestwood Midstream Limited Partners. As discussed above, Crestwood Midstream paid cash distributions to its limited partners (excluding distributions to its general partner and distributions on the limited partner units that were owned by Crestwood Equity) of $74.3 million during the three months ended March 31, 2015 . Crestwood Midstream Class A Preferred Unit Holders . During the three months ended March 31, 2015 , Crestwood Midstream issued 414,325 Class A Preferred Units to its preferred unit holders for the quarter ended December 31, 2014 in lieu of paying a cash distribution of $10.4 million . Crestwood Niobrara Preferred Unit Holders. During the three months ended March 31, 2016 , Crestwood Niobrara paid cash distributions of $3.8 million to GE. During the three months ended March 31, 2015 , Crestwood Niobrara issued 3,680,570 preferred units to GE in lieu of paying a cash distribution for the quarter ended December 31, 2014. Beginning with the distribution for the first quarter of 2015, Crestwood Niobrara no longer had the option to pay distributions to GE by issuing additional preferred units in lieu of paying a cash distribution. In April 2016, Crestwood Niobrara paid a cash distribution of $3.8 million to GE for the quarter ended March 31, 2016 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings Canadian Class Action Lawsuit. Prior to the completion of our acquisition of Arrow Midstream Holdings, LLC (Arrow) on November 8, 2013, a train transporting over 50,000 barrels of crude oil produced in North Dakota derailed in Lac Megantic, Quebec, Canada on July 6, 2013. The derailment resulted in the death of 47 people, injured numerous others, and caused severe damage to property and the environment. In October 2013, certain individuals suffering harm in the derailment filed a motion to certify a class action lawsuit in the Superior Court for the District of Megantic, Province of Quebec, Canada, on behalf of all persons suffering loss in the derailment (the Class Action Suit). In March 2014, the plaintiffs filed their fourth amended motion to name Arrow and numerous other energy companies as additional defendants in the class action lawsuit. The plaintiffs alleged, among other things, that Arrow (i) was a producer of the crude oil being transported on the derailed train, (ii) was negligent in failing to properly classify the crude delivered to the trucks that hauled the crude to the rail loading terminal, and (iii) owed a duty to the petitioners to ensure the safe transportation of the crude being transported. The motion to authorize the class action and motions in opposition were heard by the Court in June 2014. In June 2015, the Superior Court determined that the Class Action Suit proceeding should be allowed to proceed against certain respondents that have not contributed to the global settlement described below. Because Arrow is a contributing party to the global settlement, the Class Action Suit against Arrow has been stayed pending finalization of the global settlement plan in the United States and Canadian bankruptcy proceedings described below. One of the defendants in the lawsuit, Montreal Main & Atlantic Railway (MM&A), filed bankruptcy actions in the U.S. Bankruptcy Court for the District of Maine and in the Canadian Bankruptcy Court. The bankruptcy trustees in the proceedings approached the respondents in the Class Action Suit (including Arrow) to contribute monetary damages to a global settlement for all claims, including any potential environmental damages, related to the Lac Megantic derailment. During the first quarter of 2015, Crestwood Midstream agreed to contribute to the global settlement in exchange for a release from all claims related to the derailment, including the Class Action Suit. In June 2015, the creditors in the Canadian bankruptcy proceeding voted unanimously in favor of the global settlement. The Canadian bankruptcy court approved the bankruptcy plan (including the global settlement) on July 13, 2015, and the United States bankruptcy court approved a modified version of the bankruptcy plan (including the global settlement) on October 9, 2015. Consistent with the modified plan approved in the US bankruptcy proceeding, the Canadian bankruptcy court also approved a modified bankruptcy plan on October 9, 2015. The US and Canadian bankruptcy proceedings were finalized in December 2015 and the funding of the settlement was complete. Crestwood Midstream's contribution to the global settlement, in addition to associated legal fees, is fully covered by insurance, and since the global settlement is finalized, Arrow should not be exposed to additional damages relating to the derailment. Additional lawsuits related to the derailment were filed and are pending in United States courts. However, all of lawsuits have been stayed as a result of the automatic stay arising from MM&A's United States bankruptcy proceeding. Arrow has been named as a defendant in 39 lawsuits pending in three different courts; however, we expect these lawsuits to be dismissed with prejudice upon disbursement of funds to the victims. An order of dismissal has been signed by the judge. If an appeal of the order of dismissal is not filed by May 6, 2016, these cases will be dismissed. Based on Crestwood Midstream's contribution to the global settlement and since the global settlement was approved by both bankruptcy courts, we do not anticipate any material loss in this matter after considering insurance. Simplification Merger Lawsuits . On May 20, 2015, Lawrence G. Farber, a purported unitholder of Crestwood Midstream, filed a complaint in the Southern District of the United States, Houston Division, as a putative class action on behalf of Crestwood Midstream's unitholders, entitled Lawrence G. Farber, individually and on behalf of all others similarly situated v. Crestwood Midstream Partners LP, Crestwood Midstream GP LLC, Robert G. Phillips, Alvin Bledsoe, Michael G. France, Philip D. Gettig, Warren H. Gfellar, David Lumpkins, John J. Sherman, David Wood, Crestwood Equity Partners LP, Crestwood Equity GP LLC, CEQP ST Sub LLC, MGP GP, LLC, Crestwood Midstream Holdings LP, and Crestwood Gas Services GP LLC . This complaint alleges, among other things, that Crestwood Midstream's general partner breached its fiduciary duties, certain individual defendants breached their fiduciary duties of loyalty and due care, and that other defendants aided and abetted such breaches. On July 21, 2015, Isaac Aron, another purported unitholder of the Crestwood Midstream, filed a complaint in the Southern District of the United States, Houston Division, as a putative class action on behalf of Crestwood Midstream's unitholders, entitled Isaac Aron, individually and on behalf of all others similarly situated vs. Robert G. Phillps, Alvin Bledsoe, Michael G. France, Philip D. Getting, Warren H. Gfeller, David Lumpkins, John J. Sherman, David Wood, Crestwood Midstream Partners, LP Crestwood Midstream Holdings LP, Crestwood Midstream GP LLC, Crestwood Gas Services GP, LLC, Crestwood Equity Partners LP, Crestwood Equity GP LLC, CEQP ST Sub LLC and MGP GP, LLC. The complaint alleges, among other things, that Crestwood Midstream's general partner and certain individual defendants violated Sections 14(a) and 20(a) of the Securities Exchange Act of 1934 and Rule 14a-9 by filing an alleged incomplete and misleading Form S-4 Registration Statement with the SEC. On August 12, 2015, the defendants filed a motion to consolidate the Farber and Aron cases, which the court granted on September 4, 2015. Farber subsequently dismissed his claims against all the defendants on September 16, 2015. Aron filed a motion for temporary restraining order and requested an expedited preliminary injunction hearing, which had been scheduled for September 23, 2015. On September 22, 2015, however, the parties entered into a memorandum of understanding (MOU) with respect to a proposed settlement of the Aron lawsuit. The settlement contemplated by the MOU is subject to a number of conditions, including notice to the class, limited confirmatory discovery and final court approval of the settlement. The defendants expect the court to approve the final settlement during the first half of 2016. The anticipated settlement of the MOU has not and will not have a material impact to our consolidated financial statements. Property Taxes. Tres Palacios filed a lawsuit in Matagorda County for tax years 2011, 2012 and 2013 alleging that the Matagorda County Appraisal District (MCAD) assessed taxable value above the fair market value and on an unequal and non-uniform basis compared to other properties. In conjunction with its sale of Tres Palacios to Tres Holdings, Crestwood Equity retained liability for certain tax matters, including this litigation. In January 2015, Crestwood Equity received a refund related to the 2011 tax year at the conclusion of the litigation related to that tax year. For the 2012 and 2013 tax years, the MCAD asserted a taxable value that would result in property taxes of approximately $7 million for each of those years, while Tres Palacios asserted a taxable value that would result in property taxes of less than $2 million in each year. Tres Palacios paid approximately $8.6 million to Matagorda County in total for those two tax years. A bench trial was held in October 2015 related to the 2012 and 2013 tax years and the trial court has not issued a decision on those years. These lawsuits remain pending and the outcome is not yet determined. General. We are periodically involved in litigation proceedings. If we determine that a negative outcome is probable and the amount of loss is reasonably estimable, then we accrue the estimated amount. The results of litigation proceedings cannot be predicted with certainty. We could incur judgments, enter into settlements or revise our expectations regarding the outcome of certain matters, and such developments could have a material adverse effect on our results of operations or cash flows in the period in which the amounts are paid and/or accrued. As of March 31, 2016 and December 31, 2015 , both CEQP and CMLP had less than $0.1 million accrued for outstanding legal matters. Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures for which we can estimate will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Any loss estimates are inherently subjective, based on currently available information, and are subject to management's judgment and various assumptions. Due to the inherently subjective nature of these estimates and the uncertainty and unpredictability surrounding the outcome of legal proceedings, actual results may differ materially from any amounts that have been accrued. Regulatory Compliance In the ordinary course of our business, we are subject to various laws and regulations. In the opinion of our management, compliance with current laws and regulations will not have a material effect on its results of operations, cash flows or financial condition. Environmental Compliance During 2014, we experienced three releases totaling approximately 28,000 barrels of produced water on our Arrow water gathering system located on the Fort Berthold Indian Reservation in North Dakota. We immediately notified the National Response Center, the Three Affiliated Tribes and numerous other regulatory authorities, and thereafter contained and cleaned up the releases completely and placed the impacted segments of these water lines back into service. In May 2015, we experienced a release of approximately 5,200 barrels of produced water on our Arrow water gathering system, immediately notified numerous regulatory authorities and other third parties, and thereafter contained and cleaned up the releases. We will continue our remediation efforts to ensure the impacted lands are restored to their prior state. We believe these releases are insurable events under our policies, and we have notified our carriers of these events. We have not recorded an insurance receivable as of March 31, 2016 . We may potentially be subject to fines and penalties as a result of the water releases. In October 2014, we received data requests from the Environmental Protection Agency (EPA) related to the 2014 water releases and we responded to the requests during the first half of 2015. In April 2015, the EPA issued a Notice of Potential Violation (NOPV) under the Clean Water Act relating to the 2014 water releases. We responded to the NOPV in May 2015, and have commenced settlement discussions with the EPA concerning the NOPV. On March 3, 2015, we received a grand jury subpoena from the United States Attorney’s Office in Bismarck, North Dakota, seeking documents and information relating to the largest of the three 2014 water releases, and we provided the requested information during the second quarter of 2015. In August 2015, we received a notice of violation from the Three Affiliated Tribes' Environmental Division related to our 2014 produced water releases on the Fort Berthold Indian Reservation. The notice of violation imposes fines and requests reimbursements exceeding $1.1 million ; however, the notice of violation was stayed on September 15, 2015, upon our posting of a performance bond for the amount contemplated by the notice and pending the outcome of ongoing settlement discussions with the regulatory agencies asserting jurisdiction over the 2014 produced water releases. We cannot predict what the outcome of these investigations will be. Our operations are subject to stringent and complex laws and regulations pertaining to health, safety, and the environment. We are subject to laws and regulations at the federal, state and local levels that relate to air and water quality, hazardous and solid waste management and disposal and other environmental matters. The cost of planning, designing, constructing and operating our facilities must incorporate compliance with environmental laws and regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures. At March 31, 2016 and December 31, 2015 , our accrual of approximately $1.7 million was primarily related to the Arrow water releases described above, which is based on our undiscounted estimate of amounts we will spend on compliance with environmental and other regulations, and any associated fines or penalties. We estimate that our potential liability for reasonably possible outcomes related to our environmental exposures (including the Arrow water releases described above) could range from approximately $1.7 million to $3.5 million . Self-Insurance We utilize third-party insurance subject to varying retention levels of self-insurance, which management considers prudent. Such self-insurance relates to losses and liabilities primarily associated with medical claims, workers' compensation claims and general, product, vehicle and environmental liability. At March 31, 2016 and December 31, 2015 , CEQP's self-insurance reserves were $17.8 million and $ 17.2 million . We estimate that $11.3 million of this balance will be paid subsequent to March 31, 2017. As such, CEQP has classified $11.3 million in other long-term liabilities on its consolidated balance sheet at March 31, 2016 . At March 31, 2016 and December 31, 2015 , CMLP's self insurance reserves were $12.3 million and $11.4 million . CMLP estimates that $7.1 million of this balance will be paid subsequent to March 31, 2017. As such, CMLP has classified $7.1 million in other long-term liabilities on its consolidated balance sheet at March 31, 2016 .

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions CEQP and CMLP enter into transactions with their affiliates within the ordinary course of business and the services are based on the same terms as non-affiliates, including gas gathering and processing services under long-term contracts, product purchases and various operating agreements. The following table shows revenues, costs of product/services sold, general and administrative expenses and reimbursements of expenses from our affiliates for the three months ended March 31, 2016 and 2015 ( in millions ): Three Months Ended March 31, 2016 2015 Gathering and processing revenues at CEQP and CMLP $ 0.7 $ 1.0 Gathering and processing costs of product/services sold at CEQP and CMLP (1) $ 4.3 $ 8.3 Operations and maintenance expenses charged at CEQP and CMLP $ 0.7 $ 0.9 General and administrative expenses charged by CEQP to CMLP, net (2) $ 3.7 $ 17.4 General and administrative expenses charged by CEQP to Crestwood Holdings, net (3) $ 0.1 $ 0.1 (1) Represents natural gas purchases from Sabine Oil and Gas Corporation. (2) Includes $4.5 million and $2.2 million of net unit-based compensation charges allocated from CEQP to CMLP for three months ended March 31, 2016 and 2015 . In addition, prior to the completion of the Simplification Merger, CEQP allocated general and administrative costs to CMLP. In conjunction with the Simplification Merger, CMLP shares common management, general and administrative and overhead costs with CEQP. During the three months ended March 31, 2016 , CMLP allocated $0.8 million of general and administrative costs to CEQP. (3) Includes less than $0.1 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three months ended 2016 . The following table shows accounts receivable and accounts payable from our affiliates as of March 31, 2016 and December 31, 2015 ( in millions ): CEQP CMLP March 31, 2016 December 31, 2015 March 31, 2016 December 31, 2015 Accounts receivable $ 1.1 $ 1.7 $ 1.1 $ 1.7 Accounts payable $ 3.8 $ 4.0 $ 1.3 $ 1.5

Segments

Segments	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Segments	Segments Financial Information As discussed in Note 1, on September 30, 2015, the Company contributed 100% of its interest in Crestwood Operations to Crestwood Midstream and as a result, we modified our segments and our financial statements to reflect three operating and reportable segments: (i) gathering and processing operations; (ii) storage and transportation operations; and (iii) marketing, supply and logistics operations (formerly NGL and crude services operations). Consequently, the results of our Arrow operations are now reflected in our gathering and processing operations for all periods presented and our COLT and PRBIC operations are now reflected in our storage and transportation operations for all periods presented. These respective operations were previously included in our NGL and crude services operations. Our corporate operations include all general and administrative expenses that are not allocated to our reportable segments. For a further description of our operating and reporting segments, see Note 1. We assess the performance of our operating segments based on EBITDA, a non-GAAP financial measure, which is defined as income before income taxes, plus debt-related costs (net interest and debt expense) and depreciation, amortization and accretion expense. Below is a reconciliation of CEQP's net income to EBITDA ( in millions ): Three Months Ended March 31, 2016 2015 Net income (loss) $ (93.7 ) $ 18.1 Add: Interest and debt expense, net 36.1 33.6 Provision for income taxes — 0.4 Depreciation, amortization and accretion 62.3 74.2 EBITDA $ 4.7 $ 126.3 The following tables summarize CEQP's reportable segment data for the three months ended March 31, 2016 and 2015 ( in millions ). Included in earnings from unconsolidated affiliates below was approximately $2.6 million and $3.1 million of depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the three months ended March 31, 2016 and 2015 , respectively. Three Months Ended March 31, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 238.9 $ 59.4 $ 237.7 $ — $ 536.0 Intersegment revenues 20.5 0.4 (20.9 ) — — Costs of product/services sold 179.8 2.9 180.7 — 363.4 Operations and maintenance expense 17.8 7.2 16.8 — 41.8 General and administrative expense — — — 23.0 23.0 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 5.1 1.4 — — 6.5 Other income, net — — — 0.1 0.1 EBITDA $ 58.3 $ 37.4 $ (68.1 ) $ (22.9 ) $ 4.7 Goodwill $ 45.9 $ 757.5 $ 172.4 $ — $ 975.8 Total assets $ 2,321.2 $ 2,185.7 $ 924.4 $ 138.7 $ 5,570.0 Purchases of property, plant and equipment $ 44.3 $ 3.3 $ 7.1 $ 0.9 $ 55.6 Three Months Ended March 31, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 350.3 $ 67.6 $ 313.6 $ — $ 731.5 Intersegment revenues 10.1 — (10.1 ) — — Costs of product/services sold 266.7 5.3 257.7 — 529.7 Operations and maintenance expense 24.1 6.4 20.1 — 50.6 General and administrative expense — — — 27.5 27.5 Loss on long-lived assets (0.3 ) (0.7 ) — — (1.0 ) Earnings from unconsolidated affiliates, net 2.5 0.9 — — 3.4 Other income, net — — — 0.2 0.2 EBITDA $ 71.8 $ 56.1 $ 25.7 $ (27.3 ) $ 126.3 Purchases of property, plant and equipment $ 36.2 $ 4.1 $ 6.9 $ 0.2 $ 47.4 Below is a reconciliation of CMLP's net income to EBITDA ( in millions ): Three Months Ended March 31, 2016 2015 Net income (loss) $ (95.3 ) $ 29.1 Add: Interest and debt expense, net 36.1 29.9 Provision (benefit) for income taxes (0.2 ) 0.4 Depreciation, amortization and accretion 64.9 68.8 EBITDA $ 5.5 $ 128.2 The following tables summarize CMLP's reportable segment data for the three months ended March 31, 2016 and 2015 ( in millions ). Included in earnings from unconsolidated affiliates below was approximately $2.6 million and $3.1 million of depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the years ended March 31, 2016 and 2015 , respectively. Three Months Ended March 31, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 238.9 $ 59.4 $ 237.7 $ — $ 536.0 Intersegment revenues 20.5 0.4 (20.9 ) — — Costs of product/services sold 179.8 2.9 180.7 — 363.4 Operations and maintenance expense 17.8 7.1 16.8 — 41.7 General and administrative expense — — — 22.2 22.2 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 5.1 1.4 — — 6.5 EBITDA $ 58.3 $ 37.5 $ (68.1 ) $ (22.2 ) $ 5.5 Goodwill $ 45.9 $ 757.5 $ 172.4 $ — $ 975.8 Total assets $ 2,534.1 $ 2,185.0 $ 924.4 $ 123.9 $ 5,767.4 Purchases of property, plant and equipment $ 44.3 $ 3.3 $ 7.1 $ 0.9 $ 55.6 Three Months Ended March 31, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 350.3 $ 67.6 $ 313.6 $ — $ 731.5 Intersegment revenues 10.1 — (10.1 ) — — Costs of product/services sold 266.7 5.3 257.7 — 529.7 Operations and maintenance expense 24.1 6.4 20.1 — 50.6 General and administrative expense — — — 25.6 25.6 Loss on long-lived assets (0.3 ) (0.5 ) — — (0.8 ) Earnings from unconsolidated affiliates, net 2.5 0.9 — — 3.4 EBITDA $ 71.8 $ 56.3 $ 25.7 $ (25.6 ) $ 128.2 Purchases of property, plant and equipment $ 36.2 $ 4.1 $ 6.9 $ 0.2 $ 47.4

Condensed Consolidating Financi

Condensed Consolidating Financial Information	3 Months Ended
	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information Crestwood Midstream is a holding company and own no operating assets and have no significant operations independent of its subsidiaries (Parent). Obligations under Crestwood Midstream's senior notes and its credit facility are jointly and severally guaranteed by substantially all of its subsidiaries, except for Crestwood Niobrara, PRBIC and Tres Holdings and their respective subsidiaries (collectively, Non-Guarantor Subsidiaries). Crestwood Midstream Finance Corp., the co-issuer of its senior notes, is Crestwood Midstream's 100% owned subsidiary and has no material assets, operations, revenues or cash flows other than those related to its service as co-issuer of the Crestwood Midstream senior notes. The tables below present condensed consolidating financial statements for Crestwood Midstream as parent on a stand-alone, unconsolidated basis, and Crestwood Midstream's combined guarantor and combined non-guarantor subsidiaries as of March 31, 2016 and December 31, 2015 , and for the three months ended March 31, 2016 and 2015 . The financial information may not necessarily be indicative of the results of operations, cash flows or financial position had the subsidiaries operated as independent entities. Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.8 $ — $ — $ — $ 0.8 Accounts receivable — 209.1 0.5 — 209.6 Inventory — 26.6 — — 26.6 Other current assets — 33.3 — — 33.3 Total current assets 0.8 269.0 0.5 — 270.3 Property, plant and equipment, net — 3,514.4 — — 3,514.4 Goodwill and intangible assets, net — 1,719.1 — — 1,719.1 Investment in consolidated affiliates 5,350.2 — — (5,350.2 ) — Investment in unconsolidated affiliates — — 260.6 — 260.6 Other assets — 3.0 — — 3.0 Total assets $ 5,351.0 $ 5,505.5 $ 261.1 $ (5,350.2 ) $ 5,767.4 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 116.5 $ — $ — $ 116.5 Other current liabilities 35.8 67.0 — — 102.8 Total current liabilities 35.8 183.5 — — 219.3 Long-term liabilities: Long-term debt, less current portion 2,528.2 2.6 — — 2,530.8 Other long-term liabilities — 44.1 — — 44.1 Deferred income taxes — 0.6 — — 0.6 Partners' capital 2,787.0 5,274.7 75.5 (5,350.2 ) 2,787.0 Interest of non-controlling partners in subsidiaries — — 185.6 — 185.6 Total partners' capital 2,787.0 5,274.7 261.1 (5,350.2 ) 2,972.6 Total liabilities and partners' capital $ 5,351.0 $ 5,505.5 $ 261.1 $ (5,350.2 ) $ 5,767.4 Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet December 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.1 $ — $ — $ — $ 0.1 Accounts receivable — 236.0 0.5 — 236.5 Inventory — 44.5 — — 44.5 Other current assets — 52.5 — — 52.5 Total current assets 0.1 333.0 0.5 — 333.6 Property, plant and equipment, net — 3,525.7 — — 3,525.7 Goodwill and intangible assets, net — 1,846.9 — — 1,846.9 Investment in consolidated affiliates 5,506.8 — — (5,506.8 ) — Investment in unconsolidated affiliates — — 254.3 — 254.3 Other assets — 3.1 — — 3.1 Total assets $ 5,506.9 $ 5,708.7 $ 254.8 $ (5,506.8 ) $ 5,963.6 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 141.3 $ 0.1 $ — $ 141.4 Other current liabilities 26.4 85.2 — — 111.6 Total current liabilities 26.4 226.5 0.1 — 253.0 Long-term liabilities: Long-term debt, less current portion 2,498.9 2.9 — — 2,501.8 Other long-term liabilities — 43.3 — — 43.3 Deferred income taxes — 0.4 — — 0.4 Partners' capital 2,981.6 5,435.6 71.2 (5,506.8 ) 2,981.6 Interest of non-controlling partners in subsidiaries — — 183.5 — 183.5 Total partners' capital 2,981.6 5,435.6 254.7 (5,506.8 ) 3,165.1 Total liabilities and partners' capital $ 5,506.9 $ 5,708.7 $ 254.8 $ (5,506.8 ) $ 5,963.6 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 536.0 $ — $ — $ 536.0 Costs of product/services sold — 363.4 — — 363.4 Expenses: Operations and maintenance — 41.7 — — 41.7 General and administrative 17.7 4.5 — — 22.2 Depreciation, amortization and accretion — 64.9 — — 64.9 17.7 111.1 — — 128.8 Other operating expense: Goodwill impairment — (109.7 ) — — (109.7 ) Operating loss (17.7 ) (48.2 ) — — (65.9 ) Earnings from unconsolidated affiliates, net — — 6.5 — 6.5 Interest and debt expense, net (36.1 ) — — — (36.1 ) Equity in net income (loss) of subsidiary (41.5 ) — — 41.5 — Income (loss) before income taxes (95.3 ) (48.2 ) 6.5 41.5 (95.5 ) Benefit for income taxes — (0.2 ) — — (0.2 ) Net income (loss) (95.3 ) (48.0 ) 6.5 41.5 (95.3 ) Net income attributable to non-controlling partners in subsidiaries — — 5.9 — 5.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ (95.3 ) $ (48.0 ) $ 0.6 $ 41.5 $ (101.2 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended March 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 731.5 $ — $ — $ 731.5 Costs of product/services sold — 529.7 — — 529.7 Expenses: Operations and maintenance — 50.6 — — 50.6 General and administrative 13.4 12.2 — — 25.6 Depreciation, amortization and accretion 0.2 68.6 — — 68.8 13.6 131.4 — — 145.0 Other operating expense: Loss on long-lived assets, net — (0.8 ) — — (0.8 ) Operating income (loss) (13.6 ) 69.6 — — 56.0 Earnings from unconsolidated affiliates, net — — 3.4 — 3.4 Interest and debt expense, net (29.9 ) — — — (29.9 ) Equity in net income (loss) of subsidiary 72.6 — — (72.6 ) — Income (loss) before income taxes 29.1 69.6 3.4 (72.6 ) 29.5 Provision for income taxes — 0.4 — — 0.4 Net income (loss) 29.1 69.2 3.4 (72.6 ) 29.1 Net income attributable to non-controlling partners in subsidiaries — — 5.6 — 5.6 Net income (loss) attributable to Crestwood Midstream Partners LP 29.1 69.2 (2.2 ) (72.6 ) 23.5 Net income attributable to Class A preferred units 9.2 — — — 9.2 Net income (loss) attributable to partners $ 19.9 $ 69.2 $ (2.2 ) $ (72.6 ) $ 14.3 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (42.7 ) $ 172.8 $ 5.6 $ — $ 135.7 Cash flows from investing activities: Purchases of property, plant and equipment (0.9 ) (54.7 ) — — (55.6 ) Investment in unconsolidated affiliates — — (5.5 ) — (5.5 ) Proceeds from the sale of assets — 0.8 — — 0.8 Capital contributions to consolidated affiliates (3.7 ) — — 3.7 — Net cash provided by (used in) investing activities (4.6 ) (53.9 ) (5.5 ) 3.7 (60.3 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 313.5 — — — 313.5 Principal payments on long-term debt (286.0 ) — — — (286.0 ) Payments on capital leases — (0.5 ) — — (0.5 ) Payments for debt-related deferred costs (0.1 ) — — — (0.1 ) Distributions paid (97.2 ) — (3.8 ) — (101.0 ) Contributions from parent — — 3.7 (3.7 ) — Taxes paid for unit-based compensation vesting — (0.6 ) — — (0.6 ) Change in intercompany balances 117.8 (117.8 ) — — — Net cash provided by (used in) financing activities 48.0 (118.9 ) (0.1 ) (3.7 ) (74.7 ) Net change in cash 0.7 — — — 0.7 Cash at beginning of period 0.1 — — — 0.1 Cash at end of period $ 0.8 $ — $ — $ — $ 0.8 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (54.8 ) $ 160.5 $ — $ — $ 105.7 Cash flows from investing activities: Purchases of property, plant and equipment (0.1 ) (47.3 ) — — (47.4 ) Investment in unconsolidated affiliates — — (17.9 ) — (17.9 ) Proceeds from the sale of assets — 0.5 — — 0.5 Capital contributions to consolidated affiliates (17.9 ) — — 17.9 — Other — (0.2 ) — — (0.2 ) Net cash provided by (used in) investing activities (18.0 ) (47.0 ) (17.9 ) 17.9 (65.0 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,114.6 — — — 1,114.6 Principal payments on long-term debt (970.4 ) — — — (970.4 ) Payments on capital leases (0.5 ) (0.2 ) — — (0.7 ) Payments for debt-related deferred costs (11.1 ) — — — (11.1 ) Distributions paid (111.4 ) — — — (111.4 ) Contributions from parent — — 17.9 (17.9 ) — Taxes paid for unit-based compensation vesting — (1.7 ) — — (1.7 ) Change in intercompany balances 51.8 (51.8 ) — — — Other (0.2 ) — — — (0.2 ) Net cash provided by (used in) financing activities 72.8 (53.7 ) 17.9 (17.9 ) 19.1 Net change in cash — 59.8 — — 59.8 Cash at beginning of period — 7.6 — — 7.6 Cash at end of period $ — $ 67.4 $ — $ — $ 67.4

Subsequent Events (Notes)

Subsequent Events (Notes)	3 Months Ended
	Mar. 31, 2016
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Events In April 2016, our wholly-owned subsidiary, Crestwood Pipeline and Storage Northeast LLC (Crestwood Northeast) and Con Edison Gas Pipeline and Storage Northeast, LLC (CEGP), a wholly owned subsidiary of Consolidated Edison, Inc. (Con Edison), entered into a definitive agreement to form a joint venture (the Stagecoach JV) to own and further develop our existing natural gas pipeline and storage business located in southern New York and northern Pennsylvania (the NE S&T assets). Subject to the terms and conditions of the contribution agreement (including customary closing conditions and purchase price adjustments), we will contribute to Stagecoach Gas Services LLC (Stagecoach Gas) the entities owning the NE S&T assets, CEGP will contribute $975 million to Stagecoach Gas in exchange for a 50% equity interest in Stagecoach Gas, and Stagecoach Gas will distribute to Crestwood Northeast the net cash proceeds received from CEGP. The Stagecoach JV transaction is expected to be substantially completed in the second quarter of 2016. In conjunction with our entry into the contribution agreement with CEGP, Crestwood Midstream amended its credit facility in April 2016 to, among other things, (i) facilitate the closing of the joint venture and make investments in the joint venture thereafter, and (ii) implement our liability management plan with the net cash proceeds received from Stagecoach Gas, including the repurchase of Crestwood Midstream’s senior notes with borrowings under its credit facility. The operative terms of the amendment will become effective contemporaneously with the closing of the joint venture. The impact of the transactions discussed above have not been reflected in this Quarterly Report on Form 10-Q as of and for the three months ended March 31, 2016 . Detailed descriptions of the contribution agreement and resulting joint venture, as well as the amendment to Crestwood Midstream's credit facility, are contained in the Form 8-K filed by each of Crestwood Midstream and Crestwood Equity with the SEC on April 22, 2015.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies There were no material changes in our significant accounting policies from those described in our 2015 Annual Report on Form 10-K.
New Accounting Pronouncements Issued But Not Yet Adopted	New Accounting Pronouncements Issued But Not Yet Adopted As of March 31, 2016 , the following accounting standards had not yet been adopted by us: In May 2014, the Financial Accounting Standards Board (FASB) issued ASU 2014-09, Revenue from Contracts with Customers, which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance. We expect to adopt the provisions of this standard effective January 1, 2018 and are currently evaluating the impact that this standard will have on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which revises the accounting for leases by requiring certain leases to be recognized as assets and liabilities on the balance sheet, and requiring companies to disclose additional information about their leasing arrangements. We expect to adopt the provisions of this standard effective January 1, 2019 and are currently evaluating the impact that this standard will have on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718):Improvements to Employee Share-Based Payment Accounting , which is intended to improve the accounting for employee share-based payments. The ASU simplifies several aspects of the accounting for share-based payment award transactions, including the classification of awards as either equity or liabilities and presentation on the statement of cash flows. We expect to adopt the provisions of this standard effective January 1, 2017 and are currently evaluating the impact that this standard may have on our consolidated financial statements.

Basis of Presentation and Sum23

Basis of Presentation and Summary of Significant Accounting Policies Goodwill (Tables)	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill at December 31, 2015 Goodwill Impairments during the Three Months Ended Goodwill at March 31, 2016 March 31, 2016 Gathering and Processing Marcellus $ 8.6 $ 8.6 $ — Arrow 45.9 — 45.9 Storage and Transportation Northeast Storage and Transportation 726.3 — 726.3 COLT 44.9 13.7 31.2 Marketing, Supply and Logistics Supply and Logistics 167.2 65.5 101.7 Storage and Terminals 50.5 14.1 36.4 US Salt 12.6 — 12.6 Trucking 29.5 7.8 21.7 Total $ 1,085.5 $ 109.7 $ 975.8

Certain Balance Sheet Informa24

Certain Balance Sheet Information (Tables)	3 Months Ended
	Mar. 31, 2016
Balance Sheet Related Disclosures [Abstract]
Schedule of Accrued Liabilities	Accrued expenses and other liabilities consisted of the following at March 31, 2016 and December 31, 2015 ( in millions ): CEQP CMLP March 31, December 31, March 31, December 31, 2016 2015 2016 2015 Accrued expenses $ 30.7 $ 46.4 $ 29.0 $ 44.1 Accrued property taxes 5.4 4.8 5.4 4.8 Accrued product purchases payable 1.4 1.5 1.4 1.5 Tax payable 1.3 0.5 0.8 0.5 Interest payable 35.6 26.2 35.6 26.2 Accrued additions to property, plant and equipment 5.3 10.4 5.3 10.4 Capital leases 1.4 1.6 1.4 1.6 Deferred revenue 15.7 14.2 15.7 14.2 Total accrued expenses and other liabilities $ 96.8 $ 105.6 $ 94.6 $ 103.3

Investments in Unconsolidated25

Investments in Unconsolidated Affiliates (Tables)	3 Months Ended
	Mar. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Our net investments in and earnings from our unconsolidated affiliates are as follows ( in millions, unless otherwise stated ): Ownership Percentage Investment Earnings from Unconsolidated Affiliates March 31, March 31, December 31, Three Months Ended March 31, 2016 2016 2015 2016 2015 Jackalope Gas Gathering Services, L.L.C. (1) 50.00 % (4) $ 202.4 $ 202.4 $ 5.1 $ 2.5 Tres Palacios Holdings LLC (2) 50.01 % 43.1 36.8 0.8 0.9 Powder River Basin Industrial Complex, LLC (3) 50.01 % 15.1 15.1 0.6 — Total $ 260.6 $ 254.3 $ 6.5 $ 3.4 (1) As of March 31, 2016 , our equity in the underlying net assets of Jackalope Gas Gathering Services, L.L.C. (Jackalope) exceeded our investment balance by approximately $0.9 million . We amortize this amount over 20 years, which represents the life of Jackalope’s gathering agreement with Chesapeake Energy Corporation (Chesapeake), and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of less than $0.1 million and $0.8 million for the three months ended March 31, 2016 and 2015 . Our Jackalope investment is included in our gathering and processing segment. (2) As of March 31, 2016 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $28.8 million . We amortize this amount over the life of the Tres Palacios Gas Storage LLC (Tres Palacios) sublease agreement, and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of $0.3 million during each of the three months ended March 31, 2016 and 2015 . Our Tres Holdings investment is included in our storage and transportation segment. (3) As of March 31, 2016 , our equity in the underlying net assets of PRBIC exceeded our investment balance by approximately $23.0 million . We amortize this amount over the life of PRBIC's property, plant and equipment and its agreement with Chesapeake, and we reflect the amortization as an increase in our earnings from unconsolidated affiliates. We recorded amortization of approximately $0.4 million for the three months ended March 31, 2016 . Our PRBIC investment is included in our storage and transportation segment. (4) Excludes non-controlling interests related to our investment in Jackalope. See Note 9 for a further discussion of our non-controlling interest related to our investment in Jackalope.

Risk Management (Tables)

Risk Management (Tables)	3 Months Ended
	Mar. 31, 2016
Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]
Notional Amounts And Terms Of Company's Derivative Financial Instruments	The notional amounts and terms of our derivative financial instruments include the following at March 31, 2016 and December 31, 2015 ( in millions ): March 31, 2016 December 31, 2015 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, crude and heating oil ( barrels ) 10.6 11.9 9.1 10.9

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	We estimate the fair value of our senior notes primarily based on quoted market prices for the same or similar issuances (representing a Level 2 fair value measurement). The following table reflects the carrying value and fair value of our CMLP senior notes ( in millions ): March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Crestwood Midstream 2020 Senior Notes $ 503.2 $ 399.8 $ 503.3 $ 382.3 Crestwood Midstream 2022 Senior Notes $ 600.0 $ 446.0 $ 600.0 $ 437.4 Crestwood Midstream 2023 Senior Notes $ 700.0 $ 519.8 $ 700.0 $ 491.8
Assets And Liabilities Measured At Fair Value On Recurring Basis	The following tables set forth by level within the fair value hierarchy, our financial instruments that were accounted for at fair value on a recurring basis at March 31, 2016 and December 31, 2015 ( in millions ): March 31, 2016 Fair Value of Derivatives Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Recorded in Balance Sheet Assets Assets from price risk management $ 0.4 $ 32.2 $ — $ 32.6 $ (19.7 ) $ 1.5 $ 14.4 Suburban Propane Partners, L.P. units (2) 4.2 — — 4.2 — — 4.2 Total assets at fair value $ 4.6 $ 32.2 $ — $ 36.8 $ (19.7 ) $ 1.5 $ 18.6 Liabilities Liabilities from price risk management $ 0.2 $ 26.6 $ — $ 26.8 $ (19.7 ) $ 0.2 $ 7.3 Total liabilities at fair value $ 0.2 $ 26.6 $ — $ 26.8 $ (19.7 ) $ 0.2 $ 7.3 December 31, 2015 Fair Value of Derivatives Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Recorded in Balance Sheet Assets Assets from price risk management $ 0.5 $ 57.8 $ — $ 58.3 $ (13.7 ) $ (12.0 ) $ 32.6 Suburban Propane Partners, L.P. units (2) 3.4 — — 3.4 — — 3.4 Total assets at fair value $ 3.9 $ 57.8 $ — $ 61.7 $ (13.7 ) $ (12.0 ) $ 36.0 Liabilities Liabilities from price risk management $ 0.2 $ 41.3 $ — $ 41.5 $ (13.7 ) $ (20.4 ) $ 7.4 Total liabilities at fair value $ 0.2 $ 41.3 $ — $ 41.5 $ (13.7 ) $ (20.4 ) $ 7.4 (1) Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions as well as cash collateral held or placed with the same counterparties. (2) Amount is reflected in other assets on CEQP's consolidated balance sheets.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2016
Text Block [Abstract]
Components Of Long-Term Debt	Long-term debt consisted of the following at March 31, 2016 and December 31, 2015 ( in millions ): March 31, December 31, Credit Facility $ 762.8 $ 735.0 2020 Senior Notes 500.0 500.0 Fair value adjustment of 2020 Senior Notes 3.2 3.3 2022 Senior Notes 600.0 600.0 2023 Senior Notes 700.0 700.0 Other 4.9 5.3 Less: deferred financing costs, net 39.2 40.9 Total Crestwood Midstream debt 2,531.7 2,502.7 Other — 0.2 Total Crestwood Equity debt 2,531.7 2,502.9 Less: current portion 0.9 1.1 Total long-term debt, less current portion $ 2,530.8 $ 2,501.8

Partners' Capital (Tables)

Partners' Capital (Tables)	3 Months Ended
	Mar. 31, 2016
Distribution Made to Limited Partner [Line Items]
Schedule of Distributions Made to Members or Limited Partners, by Distribution	A summary of CEQP's limited partner quarterly cash distributions for the three months ended March 31, 2016 and 2015 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2016 February 5, 2016 February 12, 2016 $ 1.375 $ 95.6 2015 February 6, 2015 February 13, 2015 $ 1.375 $ 25.8
Components of Net Income (Loss) Attributable to Non-Controlling Partners	The components of net income (loss) attributable to non-controlling partners for the three months ended March 31, 2016 and 2015 , are as follows (in millions) : Three Months Ended March 31, 2016 2015 Crestwood Niobrara preferred interests $ 5.9 $ 5.6 CMLP net income attributable to non-controlling partners 5.9 5.6 Crestwood Midstream limited partner interests — (5.0 ) Crestwood Midstream Class A preferred units — 9.2 CEQP net income attributable to non-controlling partners $ 5.9 $ 9.8
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Schedule of Distributions Made to Members or Limited Partners, by Distribution	The following table presents quarterly cash distributions paid to Crestwood Midstream's limited partners (excluding distributions paid to its general partner on its common units held) during the three months ended March 31, 2015 . Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) February 6, 2015 February 13, 2015 $ 0.41 $ 74.3

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2016
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table shows revenues, costs of product/services sold, general and administrative expenses and reimbursements of expenses from our affiliates for the three months ended March 31, 2016 and 2015 ( in millions ): Three Months Ended March 31, 2016 2015 Gathering and processing revenues at CEQP and CMLP $ 0.7 $ 1.0 Gathering and processing costs of product/services sold at CEQP and CMLP (1) $ 4.3 $ 8.3 Operations and maintenance expenses charged at CEQP and CMLP $ 0.7 $ 0.9 General and administrative expenses charged by CEQP to CMLP, net (2) $ 3.7 $ 17.4 General and administrative expenses charged by CEQP to Crestwood Holdings, net (3) $ 0.1 $ 0.1 (1) Represents natural gas purchases from Sabine Oil and Gas Corporation. (2) Includes $4.5 million and $2.2 million of net unit-based compensation charges allocated from CEQP to CMLP for three months ended March 31, 2016 and 2015 . In addition, prior to the completion of the Simplification Merger, CEQP allocated general and administrative costs to CMLP. In conjunction with the Simplification Merger, CMLP shares common management, general and administrative and overhead costs with CEQP. During the three months ended March 31, 2016 , CMLP allocated $0.8 million of general and administrative costs to CEQP. (3) Includes less than $0.1 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three months ended 2016 .
Schedule of Related Party Receivables and Payables	The following table shows accounts receivable and accounts payable from our affiliates as of March 31, 2016 and December 31, 2015 ( in millions ): CEQP CMLP March 31, 2016 December 31, 2015 March 31, 2016 December 31, 2015 Accounts receivable $ 1.1 $ 1.7 $ 1.1 $ 1.7 Accounts payable $ 3.8 $ 4.0 $ 1.3 $ 1.5

Segments (Tables)

Segments (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting, Other Significant Reconciling Item [Line Items]
Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization	Below is a reconciliation of CEQP's net income to EBITDA ( in millions ): Three Months Ended March 31, 2016 2015 Net income (loss) $ (93.7 ) $ 18.1 Add: Interest and debt expense, net 36.1 33.6 Provision for income taxes — 0.4 Depreciation, amortization and accretion 62.3 74.2 EBITDA $ 4.7 $ 126.3
Summary Of Segment Information	Three Months Ended March 31, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 238.9 $ 59.4 $ 237.7 $ — $ 536.0 Intersegment revenues 20.5 0.4 (20.9 ) — — Costs of product/services sold 179.8 2.9 180.7 — 363.4 Operations and maintenance expense 17.8 7.2 16.8 — 41.8 General and administrative expense — — — 23.0 23.0 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 5.1 1.4 — — 6.5 Other income, net — — — 0.1 0.1 EBITDA $ 58.3 $ 37.4 $ (68.1 ) $ (22.9 ) $ 4.7 Goodwill $ 45.9 $ 757.5 $ 172.4 $ — $ 975.8 Total assets $ 2,321.2 $ 2,185.7 $ 924.4 $ 138.7 $ 5,570.0 Purchases of property, plant and equipment $ 44.3 $ 3.3 $ 7.1 $ 0.9 $ 55.6 Three Months Ended March 31, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 350.3 $ 67.6 $ 313.6 $ — $ 731.5 Intersegment revenues 10.1 — (10.1 ) — — Costs of product/services sold 266.7 5.3 257.7 — 529.7 Operations and maintenance expense 24.1 6.4 20.1 — 50.6 General and administrative expense — — — 27.5 27.5 Loss on long-lived assets (0.3 ) (0.7 ) — — (1.0 ) Earnings from unconsolidated affiliates, net 2.5 0.9 — — 3.4 Other income, net — — — 0.2 0.2 EBITDA $ 71.8 $ 56.1 $ 25.7 $ (27.3 ) $ 126.3 Purchases of property, plant and equipment $ 36.2 $ 4.1 $ 6.9 $ 0.2 $ 47.4
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization	Below is a reconciliation of CMLP's net income to EBITDA ( in millions ): Three Months Ended March 31, 2016 2015 Net income (loss) $ (95.3 ) $ 29.1 Add: Interest and debt expense, net 36.1 29.9 Provision (benefit) for income taxes (0.2 ) 0.4 Depreciation, amortization and accretion 64.9 68.8 EBITDA $ 5.5 $ 128.2
Summary Of Segment Information	Three Months Ended March 31, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 238.9 $ 59.4 $ 237.7 $ — $ 536.0 Intersegment revenues 20.5 0.4 (20.9 ) — — Costs of product/services sold 179.8 2.9 180.7 — 363.4 Operations and maintenance expense 17.8 7.1 16.8 — 41.7 General and administrative expense — — — 22.2 22.2 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 5.1 1.4 — — 6.5 EBITDA $ 58.3 $ 37.5 $ (68.1 ) $ (22.2 ) $ 5.5 Goodwill $ 45.9 $ 757.5 $ 172.4 $ — $ 975.8 Total assets $ 2,534.1 $ 2,185.0 $ 924.4 $ 123.9 $ 5,767.4 Purchases of property, plant and equipment $ 44.3 $ 3.3 $ 7.1 $ 0.9 $ 55.6 Three Months Ended March 31, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 350.3 $ 67.6 $ 313.6 $ — $ 731.5 Intersegment revenues 10.1 — (10.1 ) — — Costs of product/services sold 266.7 5.3 257.7 — 529.7 Operations and maintenance expense 24.1 6.4 20.1 — 50.6 General and administrative expense — — — 25.6 25.6 Loss on long-lived assets (0.3 ) (0.5 ) — — (0.8 ) Earnings from unconsolidated affiliates, net 2.5 0.9 — — 3.4 EBITDA $ 71.8 $ 56.3 $ 25.7 $ (25.6 ) $ 128.2 Purchases of property, plant and equipment $ 36.2 $ 4.1 $ 6.9 $ 0.2 $ 47.4

Condensed Consolidating Finan32

Condensed Consolidating Financial Information (Tables)	3 Months Ended
	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet	Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.8 $ — $ — $ — $ 0.8 Accounts receivable — 209.1 0.5 — 209.6 Inventory — 26.6 — — 26.6 Other current assets — 33.3 — — 33.3 Total current assets 0.8 269.0 0.5 — 270.3 Property, plant and equipment, net — 3,514.4 — — 3,514.4 Goodwill and intangible assets, net — 1,719.1 — — 1,719.1 Investment in consolidated affiliates 5,350.2 — — (5,350.2 ) — Investment in unconsolidated affiliates — — 260.6 — 260.6 Other assets — 3.0 — — 3.0 Total assets $ 5,351.0 $ 5,505.5 $ 261.1 $ (5,350.2 ) $ 5,767.4 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 116.5 $ — $ — $ 116.5 Other current liabilities 35.8 67.0 — — 102.8 Total current liabilities 35.8 183.5 — — 219.3 Long-term liabilities: Long-term debt, less current portion 2,528.2 2.6 — — 2,530.8 Other long-term liabilities — 44.1 — — 44.1 Deferred income taxes — 0.6 — — 0.6 Partners' capital 2,787.0 5,274.7 75.5 (5,350.2 ) 2,787.0 Interest of non-controlling partners in subsidiaries — — 185.6 — 185.6 Total partners' capital 2,787.0 5,274.7 261.1 (5,350.2 ) 2,972.6 Total liabilities and partners' capital $ 5,351.0 $ 5,505.5 $ 261.1 $ (5,350.2 ) $ 5,767.4 Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet December 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.1 $ — $ — $ — $ 0.1 Accounts receivable — 236.0 0.5 — 236.5 Inventory — 44.5 — — 44.5 Other current assets — 52.5 — — 52.5 Total current assets 0.1 333.0 0.5 — 333.6 Property, plant and equipment, net — 3,525.7 — — 3,525.7 Goodwill and intangible assets, net — 1,846.9 — — 1,846.9 Investment in consolidated affiliates 5,506.8 — — (5,506.8 ) — Investment in unconsolidated affiliates — — 254.3 — 254.3 Other assets — 3.1 — — 3.1 Total assets $ 5,506.9 $ 5,708.7 $ 254.8 $ (5,506.8 ) $ 5,963.6 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 141.3 $ 0.1 $ — $ 141.4 Other current liabilities 26.4 85.2 — — 111.6 Total current liabilities 26.4 226.5 0.1 — 253.0 Long-term liabilities: Long-term debt, less current portion 2,498.9 2.9 — — 2,501.8 Other long-term liabilities — 43.3 — — 43.3 Deferred income taxes — 0.4 — — 0.4 Partners' capital 2,981.6 5,435.6 71.2 (5,506.8 ) 2,981.6 Interest of non-controlling partners in subsidiaries — — 183.5 — 183.5 Total partners' capital 2,981.6 5,435.6 254.7 (5,506.8 ) 3,165.1 Total liabilities and partners' capital $ 5,506.9 $ 5,708.7 $ 254.8 $ (5,506.8 ) $ 5,963.6
Condensed Income Statement	Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended March 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 731.5 $ — $ — $ 731.5 Costs of product/services sold — 529.7 — — 529.7 Expenses: Operations and maintenance — 50.6 — — 50.6 General and administrative 13.4 12.2 — — 25.6 Depreciation, amortization and accretion 0.2 68.6 — — 68.8 13.6 131.4 — — 145.0 Other operating expense: Loss on long-lived assets, net — (0.8 ) — — (0.8 ) Operating income (loss) (13.6 ) 69.6 — — 56.0 Earnings from unconsolidated affiliates, net — — 3.4 — 3.4 Interest and debt expense, net (29.9 ) — — — (29.9 ) Equity in net income (loss) of subsidiary 72.6 — — (72.6 ) — Income (loss) before income taxes 29.1 69.6 3.4 (72.6 ) 29.5 Provision for income taxes — 0.4 — — 0.4 Net income (loss) 29.1 69.2 3.4 (72.6 ) 29.1 Net income attributable to non-controlling partners in subsidiaries — — 5.6 — 5.6 Net income (loss) attributable to Crestwood Midstream Partners LP 29.1 69.2 (2.2 ) (72.6 ) 23.5 Net income attributable to Class A preferred units 9.2 — — — 9.2 Net income (loss) attributable to partners $ 19.9 $ 69.2 $ (2.2 ) $ (72.6 ) $ 14.3 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 536.0 $ — $ — $ 536.0 Costs of product/services sold — 363.4 — — 363.4 Expenses: Operations and maintenance — 41.7 — — 41.7 General and administrative 17.7 4.5 — — 22.2 Depreciation, amortization and accretion — 64.9 — — 64.9 17.7 111.1 — — 128.8 Other operating expense: Goodwill impairment — (109.7 ) — — (109.7 ) Operating loss (17.7 ) (48.2 ) — — (65.9 ) Earnings from unconsolidated affiliates, net — — 6.5 — 6.5 Interest and debt expense, net (36.1 ) — — — (36.1 ) Equity in net income (loss) of subsidiary (41.5 ) — — 41.5 — Income (loss) before income taxes (95.3 ) (48.2 ) 6.5 41.5 (95.5 ) Benefit for income taxes — (0.2 ) — — (0.2 ) Net income (loss) (95.3 ) (48.0 ) 6.5 41.5 (95.3 ) Net income attributable to non-controlling partners in subsidiaries — — 5.9 — 5.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ (95.3 ) $ (48.0 ) $ 0.6 $ 41.5 $ (101.2 )
Condensed Cash Flow Statement	Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (42.7 ) $ 172.8 $ 5.6 $ — $ 135.7 Cash flows from investing activities: Purchases of property, plant and equipment (0.9 ) (54.7 ) — — (55.6 ) Investment in unconsolidated affiliates — — (5.5 ) — (5.5 ) Proceeds from the sale of assets — 0.8 — — 0.8 Capital contributions to consolidated affiliates (3.7 ) — — 3.7 — Net cash provided by (used in) investing activities (4.6 ) (53.9 ) (5.5 ) 3.7 (60.3 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 313.5 — — — 313.5 Principal payments on long-term debt (286.0 ) — — — (286.0 ) Payments on capital leases — (0.5 ) — — (0.5 ) Payments for debt-related deferred costs (0.1 ) — — — (0.1 ) Distributions paid (97.2 ) — (3.8 ) — (101.0 ) Contributions from parent — — 3.7 (3.7 ) — Taxes paid for unit-based compensation vesting — (0.6 ) — — (0.6 ) Change in intercompany balances 117.8 (117.8 ) — — — Net cash provided by (used in) financing activities 48.0 (118.9 ) (0.1 ) (3.7 ) (74.7 ) Net change in cash 0.7 — — — 0.7 Cash at beginning of period 0.1 — — — 0.1 Cash at end of period $ 0.8 $ — $ — $ — $ 0.8 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Three Months Ended March 31, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (54.8 ) $ 160.5 $ — $ — $ 105.7 Cash flows from investing activities: Purchases of property, plant and equipment (0.1 ) (47.3 ) — — (47.4 ) Investment in unconsolidated affiliates — — (17.9 ) — (17.9 ) Proceeds from the sale of assets — 0.5 — — 0.5 Capital contributions to consolidated affiliates (17.9 ) — — 17.9 — Other — (0.2 ) — — (0.2 ) Net cash provided by (used in) investing activities (18.0 ) (47.0 ) (17.9 ) 17.9 (65.0 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,114.6 — — — 1,114.6 Principal payments on long-term debt (970.4 ) — — — (970.4 ) Payments on capital leases (0.5 ) (0.2 ) — — (0.7 ) Payments for debt-related deferred costs (11.1 ) — — — (11.1 ) Distributions paid (111.4 ) — — — (111.4 ) Contributions from parent — — 17.9 (17.9 ) — Taxes paid for unit-based compensation vesting — (1.7 ) — — (1.7 ) Change in intercompany balances 51.8 (51.8 ) — — — Other (0.2 ) — — — (0.2 ) Net cash provided by (used in) financing activities 72.8 (53.7 ) 17.9 (17.9 ) 19.1 Net change in cash — 59.8 — — 59.8 Cash at beginning of period — 7.6 — — 7.6 Cash at end of period $ — $ 67.4 $ — $ — $ 67.4

Organization and Business Des33

Organization and Business Description (Narrative) (Detail)	3 Months Ended
	Mar. 31, 2016segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Operating Segments	3

Basis of Presentation and Sum34

Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Summary Of Significant Accounting Policies [Line Items]
Impaired Assets to be Disposed of by Method Other than Sale, Amount of Impairment Loss			$ 354.4
Percentage Disposition Exceeded Carrying Value Of Property Plant And Equipment	0.00%		0.00%
Deferred Finance Costs, Net	$ 39.2		$ 40.9
Goodwill [Roll Forward]
Goodwill at December 31, 2015	1,085.5
Goodwill impairment	109.7	$ 0
Goodwill at March 31, 2016	975.8		1,085.5
Marcellus
Goodwill [Roll Forward]
Goodwill at December 31, 2015	8.6
Goodwill impairment	8.6
Goodwill at March 31, 2016	0		8.6
Arrow
Goodwill [Roll Forward]
Goodwill at December 31, 2015	45.9
Goodwill impairment	0
Goodwill at March 31, 2016	45.9		45.9
Northeast Storage and Transportation
Goodwill [Roll Forward]
Goodwill at December 31, 2015	726.3
Goodwill impairment	0
Goodwill at March 31, 2016	726.3		726.3
COLT
Goodwill [Roll Forward]
Goodwill at December 31, 2015	44.9
Goodwill impairment	13.7
Goodwill at March 31, 2016	31.2		44.9
Supply and Logistics
Goodwill [Roll Forward]
Goodwill at December 31, 2015	167.2
Goodwill impairment	65.5
Goodwill at March 31, 2016	101.7		167.2
Storage and Terminals
Goodwill [Roll Forward]
Goodwill at December 31, 2015	50.5
Goodwill impairment	14.1
Goodwill at March 31, 2016	36.4		50.5
US Salt
Goodwill [Roll Forward]
Goodwill at December 31, 2015	12.6
Goodwill impairment	0
Goodwill at March 31, 2016	12.6		12.6
Trucking
Goodwill [Roll Forward]
Goodwill at December 31, 2015	29.5
Goodwill impairment	7.8
Goodwill at March 31, 2016	$ 21.7		$ 29.5
Minimum
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate	10.00%
Maximum
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate	19.00%

Certain Balance Sheet Informa35

Certain Balance Sheet Information (Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	$ 30.7	$ 46.4
Accrued property taxes	5.4	4.8
Accrued product purchases payable	1.4	1.5
Tax payable	1.3	0.5
Interest payable	35.6	26.2
Accrued additions to property, plant and equipment	5.3	10.4
Capital leases	1.4	1.6
Deferred revenue	15.7	14.2
Total accrued expenses and other liabilities	96.8	105.6
Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	29	44.1
Accrued property taxes	5.4	4.8
Accrued product purchases payable	1.4	1.5
Tax payable	0.8	0.5
Interest payable	35.6	26.2
Accrued additions to property, plant and equipment	5.3	10.4
Capital leases	1.4	1.6
Deferred revenue	15.7	14.2
Total accrued expenses and other liabilities	$ 94.6	$ 103.3

Investments in Unconsolidated36

Investments in Unconsolidated Affiliates (Net Investments In and Earnings (Loss) from Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Investment	$ 260.6		$ 254.3
Earnings from unconsolidated affiliates, net	6.5	$ 3.4
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 5.1
Ownership Percentage	50.00%
Investment	$ 202.4		202.4
Earnings from unconsolidated affiliates, net	5.1	2.5
Difference between carrying amount and underlying equity	0.9
Amortization	$ 0.1	0.8
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.01%
Investment	$ 43.1		36.8
Earnings from unconsolidated affiliates, net	0.8	0.9
Difference between carrying amount and underlying equity	28.8
Amortization	0.3	0.3
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 0.6	0.3
Ownership Percentage	50.01%
Investment	$ 15.1		$ 15.1
Earnings from unconsolidated affiliates, net	0.6	$ 0
Difference between carrying amount and underlying equity	23
Amortization	$ 0.4

Investments in Unconsolidated37

Investments in Unconsolidated Affiliates Narrative (Details) - USD ($) $ in Millions	May. 05, 2016	Apr. 30, 2016	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments			$ 5.5	$ 18.1
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments			5.1
Amortization			0.1	0.8
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments			5.5	5.7
Amortization			0.3	0.3
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments			0.6	0.3
Payments to acquire equity method investments				3.7
Amortization			$ 0.4
Crestwood Niobrara LLC | Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments				$ 8.8
Subsequent Event | Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 7
Subsequent Event | Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		$ 4.1

Risk Management (Notional Amoun

Risk Management (Notional Amounts and Terms of Company's Derivative Financial Instruments) (Details) - Propane Crude And Heating Oil - bbl bbl in Millions	Mar. 31, 2016	Dec. 31, 2015
Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount	10.6	9.1
Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount	11.9	10.9

Risk Management (Narrative) (De

Risk Management (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Derivative [Line Items]
Collateral posted for commodity derivative instruments	$ 7.1		$ 16.8
Price Risk Contracts | Maximum
Derivative [Line Items]
Remaining maturity	36 months
Percent of contracts expiring in the next twelve months	81.00%
Commodity contract
Derivative [Line Items]
Gain (loss) on derivative instruments not designated as hedging	$ 1.2	$ 2.9
Collateral posted for commodity derivative instruments	0.3
Commodity contract with credit contingent features
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	3.8		3.3
NYMEX Derivative Liability
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	3.1		20.8
NYMEX Margin Deposit
Derivative [Line Items]
NYMEX margin deposits	$ 9.5		$ 26.7

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Carrying Values and Estimated Fair Values of Senior Notes) (Details) - Crestwood Midstream Partners LP - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Senior Notes, 2020
Debt Instrument [Line Items]
Carrying amount	$ 503.2	$ 503.3
Fair value	399.8	382.3
Senior Notes, 2022
Debt Instrument [Line Items]
Carrying amount	600	600
Fair value	446	437.4
Senior Notes, 2023
Debt Instrument [Line Items]
Carrying amount	700	700
Fair value	$ 519.8	$ 491.8

Fair Value Measurements (Assets

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	$ 32.6	$ 58.3
SPH units	4.2	3.4
Assets, Fair Value Disclosure, Excluding Netting Adjustments	36.8	61.7
Netting agreements	(19.7)	(13.7)
Derivative Asset, Fair Value of Collateral	1.5	(12)
Assets from price risk management, total	14.4	32.6
Total assets at fair value	18.6	36
Liabilities from price risk management	26.8	41.5
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	26.8	41.5
Netting agreements	(19.7)	(13.7)
Derivative Liability, Fair Value of Collateral	0.2	(20.4)
Liabilities from price risk management, total	7.3	7.4
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	0.4	0.5
SPH units	4.2	3.4
Assets, Fair Value Disclosure, Excluding Netting Adjustments	4.6	3.9
Liabilities from price risk management	0.2	0.2
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	0.2	0.2
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	32.2	57.8
SPH units	0	0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	32.2	57.8
Liabilities from price risk management	26.6	41.3
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	26.6	41.3
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	0	0
SPH units	0	0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	0	0
Liabilities from price risk management	0	0
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	$ 0	$ 0

Long-Term Debt (Components Of L

Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Other	$ 0	$ 0.2
Deferred Finance Costs, Net	39.2	40.9
Total debt	2,531.7	2,502.9
Less: current portion	0.9	1.1
Total long-term debt, less current portion	2,530.8	2,501.8
Senior Notes | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes	500	500
Senior Notes | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes	600	600
Senior Notes | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes	700	700
Fair value adjustment of 2020 Senior Notes | Senior Notes, 2020
Debt Instrument [Line Items]
Fair value adjustment	3.2	3.3
Other
Debt Instrument [Line Items]
Other	4.9	5.3
Revolving Credit Facility | Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit agreement outstanding carrying value	762.8	735
Crestwood Midstream Partners LP
Debt Instrument [Line Items]
Total debt	2,531.7	2,502.7
Less: current portion	0.9	0.9
Total long-term debt, less current portion	2,530.8	2,501.8
Crestwood Midstream Partners LP | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes	503.2	503.3
Crestwood Midstream Partners LP | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes	600	600
Crestwood Midstream Partners LP | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes	$ 700	$ 700

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Detail) $ in Millions	Feb. 12, 2016USD ($)	Feb. 13, 2015USD ($)	Feb. 14, 2014USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid	$ 95.6	$ 25.8		$ 97.2	$ 26.6
Senior Secured Leverage Ratio				1.48
Repayments of Long-term Debt				$ 286.2	1,169.9
Senior Secured Leverage Ratio, maximum				3.75
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit agreement outstanding carrying value				$ 1,000
Consolidated Leverage Ratio Maximum				5.50
Crestwood Midstream Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding				$ 60.7		$ 62.2
Debt Instrument, Unused Borrowing Capacity, Amount				268.2
Credit agreement outstanding carrying value				$ 762.8		$ 735
Total Funded Debt to Consolidated Ebitda				4.98
Consolidated Ebitda To Consolidated Interest Expense				3.77
Debt, Weighted Average Interest Rate				2.96%		2.70%
Interest Coverage Ratio Minimum				2.50
Crestwood Midstream Revolver | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate				2.94%		2.70%
Crestwood Midstream Revolver | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate				5.00%		5.00%
Senior Notes, 2020 | Senior Notes
Debt Instrument [Line Items]
Senior notes				$ 500		$ 500
Senior Notes, 2022 | Senior Notes
Debt Instrument [Line Items]
Senior notes				600		600
Senior Notes, 2023 | Senior Notes
Debt Instrument [Line Items]
Senior notes				$ 700		700
Debt Instrument, Interest Rate, Stated Percentage				6.25%
Crestwood Midstream Partners LP | Senior Notes, 2023 | Senior Notes
Debt Instrument [Line Items]
Long-term Debt				$ 700
Proceeds from Issuance of Debt				688.3
Crestwood Midstream Partners LP
Debt Instrument [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid			$ 74.3
Repayments of Long-term Debt				286	$ 970.4
Crestwood Midstream Partners LP | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes				503.2		503.3
Crestwood Midstream Partners LP | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes				600		600
Crestwood Midstream Partners LP | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes				$ 700		$ 700

Earnings Per Limited Partner 44

Earnings Per Limited Partner Unit (Details)	3 Months Ended
	Mar. 31, 2016shares
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	6,212,256
Preferred Units | Crestwood Niobrara LLC
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	19,262,780
Subordinated Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	438,789

Partners' Capital (Schedule of

Partners' Capital (Schedule of Partners' Capital Account, Distriubtions) (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 12, 2016	Feb. 05, 2016	Feb. 13, 2015	Feb. 06, 2015	Feb. 14, 2014	Feb. 07, 2014	Mar. 31, 2016	Mar. 31, 2015
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Date of Record		Feb. 5, 2016		Feb. 6, 2015
Distribution Made to Limited Partner, Distribution Date	Feb. 12, 2016		Feb. 13, 2015
Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit	$ 1.375		$ 1.375
Distribution Made to Limited Partner, Cash Distributions Paid	$ 95.6		$ 25.8				$ 97.2	$ 26.6
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Date of Record						Feb. 6, 2015
Distribution Made to Limited Partner, Distribution Date					Feb. 13, 2015
Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit					$ 0.41
Distribution Made to Limited Partner, Cash Distributions Paid					$ 74.3

Partners' Capital (Components o

Partners' Capital (Components of Net Income (Loss) Attributable to Non-Controlling Interests) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	$ 5.9	$ 9.8
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	5.9	5.6
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	5.9	5.6
Preferred Units, Class A | Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	0	9.2
Limited Partner [Member] | Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	$ 0	$ (5)

Partners' Capital (Narrative) (

Partners' Capital (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 21, 2016	Feb. 12, 2016	Feb. 05, 2016	Feb. 13, 2015	Feb. 06, 2015	Feb. 14, 2014	Feb. 07, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distribution Date		Feb. 12, 2016		Feb. 13, 2015
Distribution Made to Limited Partner, Date of Record			Feb. 5, 2016		Feb. 6, 2015
Incentive Distribution, Distribution								$ 95.6	$ 25.8
Limited Partners' Capital Account, Distribution Amount									10.5
Preferred Stock Dividends, Shares		1,404,317						1,400,000
Net Income (Loss) Attributable to Noncontrolling Interest								$ 5.9	9.8
Dividends, Paid-in-kind		$ 12.8						13.1
Payments of Ordinary Dividends, Noncontrolling Interest								3.8	74.3
Distribution Made to Limited Partner, Cash Distributions Paid		$ 95.6		$ 25.8				$ 97.2	26.6
Preferred Units, Issued								62,122,562		60,718,245
Crestwood Equity Partners LP
Distribution Made to Limited Partner [Line Items]
Incentive Distribution Rights, Ownership Percentage								100.00%
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distribution Date						Feb. 13, 2015
Distribution Made to Limited Partner, Date of Record							Feb. 6, 2015
Incentive Distribution, Distribution								$ 101	$ 111.4
Preferred Stock Dividends, Shares									414,325
Net Income (Loss) Attributable to Noncontrolling Interest								5.9	$ 5.6
Dividends, Paid-in-kind									10.4
Payments of Ordinary Dividends, Noncontrolling Interest								0	0
Distribution Made to Limited Partner, Cash Distributions Paid						$ 74.3
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest								5.9	5.6
Payments of Ordinary Dividends, Noncontrolling Interest								3.8
Non-Controlling Partners
Distribution Made to Limited Partner [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest								5.9
Non-Controlling Partners | Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest								$ 5.9
Preferred Units | Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Unit Distribution								3,680,570
Subsequent Event
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distribution Date	May 13, 2016
Distribution Made to Limited Partner, Date of Record	May 6, 2016
Preferred Stock Dividends, Shares	1,436,797
Cash Distribution
Distribution Made to Limited Partner [Line Items]
Limited Partners' Capital Account, Distribution Amount									$ 74.3
Cash Distribution | Subsequent Event
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0.6

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Nov. 08, 2013bblpeople
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	$ 17.8	$ 17.2
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	11.3
Loss Contingency, Estimate of Possible Loss	7
Payments for Other Taxes	8.6
Loss Contingency Accrual, at Carrying Value		0.1
Arrow Acquisition Class Action Lawsuit
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Loss Contingency, Loss of Life, Number | people			47
Minimum | Arrow Acquisition Class Action Lawsuit
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Barrels of Oil Equivalents Spilled | bbl			50,000
Tres Palacios Holdings LLC
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Loss Contingency, Estimate of Possible Loss	2
Crestwood Midstream Partners LP
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	12.3	$ 11.4
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	$ 7.1

Commitments and Contingencies E

Commitments and Contingencies Environmental Compliance (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016USD ($)	Dec. 31, 2014Release	Dec. 31, 2015bbl	Sep. 15, 2015USD ($)	May. 06, 2015bbl
Site Contingency [Line Items]
Loss Contingency, Range of Possible Loss, Maximum				$ 1.1
Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure, Number of Releases of Produced Water | Release		3
Site Contingency, Loss Exposure, Release of Produced Water | bbl			28,000		5,200
Accrual for Environmental Loss Contingencies	$ 1.7
Site Contingency, Loss Exposure in Excess of Accrual, Low Estimate	1.7
Site Contingency, Loss Exposure in Excess of Accrual, High Estimate	$ 3.5

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	$ 0.7	$ 1
General and administrative expenses charged by CEQP to Crestwood Holdings, net(3)	0.7	0.9
Affiliated Entity
Related Party Transaction [Line Items]
Related party receivables	1.1		$ 1.7
Gathering and processing revenues at CEQP and CMLP	0.7	1
Gathering and processing costs of product/services sold at CEQP and CMLP(1)	4.3	8.3
General and administrative expenses charged by CEQP to CMLP, net(2)	3.7	17.4
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable	3.8		4
Crestwood Equity Partners LP
Related Party Transaction [Line Items]
General and administrative expenses charged by CEQP to Crestwood Holdings, net(3)	0.1	0.1
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	0.7	1
Crestwood Midstream Partners LP | Affiliated Entity
Related Party Transaction [Line Items]
Related party receivables	1.1		1.7
General and administrative expenses charged by CEQP to CMLP, net(2)	0.8
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable	1.3		$ 1.5
Crestwood LTIP | Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense	4.5	$ 2.2
Crestwood LTIP | Crestwood Holdings [Member]
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense	$ 0.1

Segments (Reconciliation of Net

Segments (Reconciliation of Net Income (Loss) to EBITDA) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)segment	Mar. 31, 2015USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of Operating Segments | segment	3
Net income (loss)	$ (93.7)	$ 18.1
Interest and debt expense, net	36.1	33.6
Provision for income taxes	0	(0.4)
Depreciation, amortization and accretion	62.3	74.2
EBITDA	4.7	126.3
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss)	(95.3)	29.1
Interest and debt expense, net	36.1	29.9
Provision for income taxes	0.2	(0.4)
Depreciation, amortization and accretion	64.9	68.8
EBITDA	$ 5.5	$ 128.2

Segments (Summary Of Segment In

Segments (Summary Of Segment Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)segment	Mar. 31, 2015USD ($)	Dec. 31, 2015USD ($)
Interest and debt expense, net	$ 36.1	$ 33.6
Number of Operating Segments | segment	3
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	$ 536	731.5
Intersegment Revenues	0	0
Costs of product/services sold	363.4	529.7
Operations and maintenance	41.8	50.6
General and administrative	23	27.5
Goodwill impairment	(109.7)	0
Loss on long-lived assets, net	0	(1)
Earnings from unconsolidated affiliates, net	6.5	3.4
Other income, net	0.1	0.2
EBITDA	4.7	126.3
Goodwill	975.8		$ 1,085.5
Total assets	5,570		5,762.8
Cash expenditures for property, plant and equipment	55.6	47.4
Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	238.9	350.3
Intersegment Revenues	20.5	10.1
Costs of product/services sold	179.8	266.7
Operations and maintenance	17.8	24.1
General and administrative	0	0
Goodwill impairment	(8.6)
Loss on long-lived assets, net		(0.3)
Earnings from unconsolidated affiliates, net	5.1	2.5
Other income, net	0	0
EBITDA	58.3	71.8
Goodwill	45.9
Total assets	2,321.2
Cash expenditures for property, plant and equipment	44.3	36.2
Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	59.4	67.6
Intersegment Revenues	0.4	0
Costs of product/services sold	2.9	5.3
Operations and maintenance	7.2	6.4
General and administrative	0	0
Goodwill impairment	(13.7)
Loss on long-lived assets, net		(0.7)
Earnings from unconsolidated affiliates, net	1.4	0.9
Other income, net	0	0
EBITDA	37.4	56.1
Goodwill	757.5
Total assets	2,185.7
Cash expenditures for property, plant and equipment	3.3	4.1
Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	237.7	313.6
Intersegment Revenues	(20.9)	(10.1)
Costs of product/services sold	180.7	257.7
Operations and maintenance	16.8	20.1
General and administrative	0	0
Goodwill impairment	(87.4)
Loss on long-lived assets, net		0
Earnings from unconsolidated affiliates, net	0	0
Other income, net	0	0
EBITDA	(68.1)	25.7
Goodwill	172.4
Total assets	924.4
Cash expenditures for property, plant and equipment	7.1	6.9
Corporate
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0	0
Intersegment Revenues	0	0
Costs of product/services sold	0	0
Operations and maintenance	0	0
General and administrative	23	27.5
Goodwill impairment	0
Loss on long-lived assets, net		0
Earnings from unconsolidated affiliates, net	0	0
Other income, net	0.1	0.2
EBITDA	(22.9)	(27.3)
Goodwill	0
Total assets	138.7
Cash expenditures for property, plant and equipment	0.9	0.2
Crestwood Midstream Partners LP
Interest and debt expense, net	36.1	29.9
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	536	731.5
Intersegment Revenues	0	0
Costs of product/services sold	363.4	529.7
Operations and maintenance	41.7	50.6
General and administrative	22.2	25.6
Goodwill impairment	(109.7)	0
Loss on long-lived assets, net	0	(0.8)
Earnings from unconsolidated affiliates, net	6.5	3.4
EBITDA	5.5	128.2
Goodwill	975.8		1,085.5
Total assets	5,767.4		$ 5,963.6
Cash expenditures for property, plant and equipment	55.6	47.4
Crestwood Midstream Partners LP | Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	238.9	350.3
Intersegment Revenues	20.5	10.1
Costs of product/services sold	179.8	266.7
Operations and maintenance	17.8	24.1
General and administrative	0	0
Goodwill impairment	(8.6)
Loss on long-lived assets, net		(0.3)
Earnings from unconsolidated affiliates, net	5.1	2.5
EBITDA	58.3	71.8
Goodwill	45.9
Total assets	2,534.1
Cash expenditures for property, plant and equipment	44.3	36.2
Crestwood Midstream Partners LP | Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	59.4	67.6
Intersegment Revenues	0.4	0
Costs of product/services sold	2.9	5.3
Operations and maintenance	7.1	6.4
General and administrative	0	0
Goodwill impairment	(13.7)
Loss on long-lived assets, net		(0.5)
Earnings from unconsolidated affiliates, net	1.4	0.9
EBITDA	37.5	56.3
Goodwill	757.5
Total assets	2,185
Cash expenditures for property, plant and equipment	3.3	4.1
Crestwood Midstream Partners LP | Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	237.7	313.6
Intersegment Revenues	(20.9)	(10.1)
Costs of product/services sold	180.7	257.7
Operations and maintenance	16.8	20.1
General and administrative	0	0
Goodwill impairment	(87.4)
Loss on long-lived assets, net		0
Earnings from unconsolidated affiliates, net	0	0
EBITDA	(68.1)	25.7
Goodwill	172.4
Total assets	924.4
Cash expenditures for property, plant and equipment	7.1	6.9
Crestwood Midstream Partners LP | Corporate
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0	0
Intersegment Revenues	0	0
Costs of product/services sold	0	0
Operations and maintenance	0	0
General and administrative	22.2	25.6
Goodwill impairment	0
Loss on long-lived assets, net		0
Earnings from unconsolidated affiliates, net	0	0
EBITDA	(22.2)	(25.6)
Goodwill	0
Total assets	123.9
Cash expenditures for property, plant and equipment	$ 0.9	$ 0.2

Segments (Narrative) (Details)

Segments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Crestwood Equity Partners LP
Segment Reporting Information [Line Items]
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments	$ 2.6	$ 3.1
Crestwood Midstream Partners LP
Segment Reporting Information [Line Items]
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments	$ 2.6	$ 3.1

Condensed Consolidating Finan54

Condensed Consolidating Financial Information (Balance Sheet) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Current assets:
Cash	$ 1.1	$ 0.5	$ 67.7		$ 8.8
Accounts receivable	209.6	236.5
Inventory	26.6	44.5
Total current assets	272.4	335.8
Property, plant and equipment, net	3,303	3,310.8
Investment	260.6	254.3
Other assets	8	7.2
Total assets	5,570	5,762.8
Current liabilities:
Accounts payable	119.1	144.1
Total current liabilities	224.1	258.2
Long-term liabilities:
Long-term debt, less current portion (Note 7)	2,530.8	2,501.8
Other long-term liabilities	48.2	47.5
Deferred income taxes	8.3	8.4
Total partners’ capital	2,758.6	2,946.9
Total liabilities and partners’ capital	5,570	5,762.8
Crestwood Midstream Partners LP
Current assets:
Cash	0.8	0.1	67.4	$ 7.6	$ 7.6
Accounts receivable	209.6	236.5
Inventory	26.6	44.5
Other	33.3	52.5
Total current assets	270.3	333.6
Property, plant and equipment, net	3,514.4	3,525.7
Intangible Assets, Net (Including Goodwill)	1,719.1	1,846.9
Investment in consolidated affiliates	0	0
Investment	260.6	254.3
Other assets	3	3.1
Total assets	5,767.4	5,963.6
Current liabilities:
Accounts payable	116.5	141.4
Total current liabilities	102.8	111.6
Total current liabilities	219.3	253
Long-term liabilities:
Long-term debt, less current portion (Note 7)	2,530.8	2,501.8
Other long-term liabilities	44.1	43.3
Deferred income taxes	0.6	0.4
Partners' capital	2,787	2,981.6
Interest of non-controlling partners in subsidiary	185.6	183.5
Total partners’ capital	2,972.6	3,165.1
Total liabilities and partners’ capital	5,767.4	5,963.6
Crestwood Midstream Partners LP | Parent Company
Current assets:
Cash	0.8	0.1	0	0
Accounts receivable	0	0
Inventory	0	0
Other	0	0
Total current assets	0.8	0.1
Property, plant and equipment, net	0	0
Intangible Assets, Net (Including Goodwill)	0	0
Investment in consolidated affiliates	5,350.2	5,506.8
Investment	0	0
Other assets	0	0
Total assets	5,351	5,506.9
Current liabilities:
Accounts payable	0	0
Total current liabilities	35.8	26.4
Total current liabilities	35.8	26.4
Long-term liabilities:
Long-term debt, less current portion (Note 7)	2,528.2	2,498.9
Other long-term liabilities	0	0
Deferred income taxes	0	0
Partners' capital	2,787	2,981.6
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	2,787	2,981.6
Total liabilities and partners’ capital	5,351	5,506.9
Crestwood Midstream Partners LP | Guarantor Subsidiaries
Current assets:
Cash	0	0	67.4	7.6
Accounts receivable	209.1	236
Inventory	26.6	44.5
Other	33.3	52.5
Total current assets	269	333
Property, plant and equipment, net	3,514.4	3,525.7
Intangible Assets, Net (Including Goodwill)	1,719.1	1,846.9
Investment in consolidated affiliates	0	0
Investment	0	0
Other assets	3	3.1
Total assets	5,505.5	5,708.7
Current liabilities:
Accounts payable	116.5	141.3
Total current liabilities	67	85.2
Total current liabilities	183.5	226.5
Long-term liabilities:
Long-term debt, less current portion (Note 7)	2.6	2.9
Other long-term liabilities	44.1	43.3
Deferred income taxes	0.6	0.4
Partners' capital	5,274.7	5,435.6
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	5,274.7	5,435.6
Total liabilities and partners’ capital	5,505.5	5,708.7
Crestwood Midstream Partners LP | Non-Guarantor Subsidiaries
Current assets:
Cash	0	0	0	0
Accounts receivable	0.5	0.5
Inventory	0	0
Other	0	0
Total current assets	0.5	0.5
Property, plant and equipment, net	0	0
Intangible Assets, Net (Including Goodwill)	0	0
Investment in consolidated affiliates	0	0
Investment	260.6	254.3
Other assets	0	0
Total assets	261.1	254.8
Current liabilities:
Accounts payable	0	0.1
Total current liabilities	0	0
Total current liabilities	0	0.1
Long-term liabilities:
Long-term debt, less current portion (Note 7)	0	0
Other long-term liabilities	0	0
Deferred income taxes	0	0
Partners' capital	75.5	71.2
Interest of non-controlling partners in subsidiary	185.6	183.5
Total partners’ capital	261.1	254.7
Total liabilities and partners’ capital	261.1	254.8
Crestwood Midstream Partners LP | Eliminations
Current assets:
Cash	0	0	$ 0	$ 0
Accounts receivable	0	0
Inventory	0	0
Other	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Intangible Assets, Net (Including Goodwill)	0	0
Investment in consolidated affiliates	(5,350.2)	(5,506.8)
Investment	0	0
Other assets	0	0
Total assets	(5,350.2)	(5,506.8)
Current liabilities:
Accounts payable	0	0
Total current liabilities	0	0
Total current liabilities	0	0
Long-term liabilities:
Long-term debt, less current portion (Note 7)	0	0
Other long-term liabilities	0	0
Deferred income taxes	0	0
Partners' capital	(5,350.2)	(5,506.8)
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	(5,350.2)	(5,506.8)
Total liabilities and partners’ capital	$ (5,350.2)	$ (5,506.8)

Condensed Consolidating Finan55

Condensed Consolidating Financial Information (Statements Of Operations) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues	$ 536	$ 731.5
Total costs of products/services sold	363.4	529.7
Expenses:
Operations and maintenance	41.8	50.6
General and administrative	23	27.5
Depreciation, amortization and accretion	62.3	74.2
Goodwill impairment	(109.7)	0
Operating income (loss)	(64.2)	48.5
Earnings from unconsolidated affiliates, net	6.5	3.4
Interest and debt expense, net	(36.1)	(33.6)
Loss before income taxes	(93.7)	18.5
Provision for income taxes	0	0.4
Net income (loss)	(93.7)	18.1
Net income attributable to non-controlling partners in subsidiaries	5.9	9.8
Net income (loss) attributable to parent	(99.6)	8.3
Net income (loss) attributable to preferred unit holders	1.6	0
Net income (loss) attributable to partners	(101.2)	8.3
Crestwood Midstream Partners LP
Revenues	536	731.5
Total costs of products/services sold	363.4	529.7
Expenses:
Operations and maintenance	41.7	50.6
General and administrative	22.2	25.6
Depreciation, amortization and accretion	64.9	68.8
Costs and Expenses	128.8	145
Loss on long-lived assets, net		(0.8)
Goodwill impairment	(109.7)	0
Operating income (loss)	(65.9)	56
Earnings from unconsolidated affiliates, net	6.5	3.4
Interest and debt expense, net	(36.1)	(29.9)
Loss from unconsolidated affiliates	0	0
Loss before income taxes	(95.5)	29.5
Provision for income taxes	(0.2)	0.4
Net income (loss)	(95.3)	29.1
Net income attributable to non-controlling partners in subsidiaries	5.9	5.6
Net income (loss) attributable to parent	(101.2)	23.5
Net income (loss) attributable to preferred unit holders	0	9.2
Net income (loss) attributable to partners	(101.2)	14.3
Crestwood Midstream Partners LP | Parent Company
Revenues	0	0
Total costs of products/services sold	0	0
Expenses:
Operations and maintenance	0	0
General and administrative	17.7	13.4
Depreciation, amortization and accretion	0	0.2
Costs and Expenses	17.7	13.6
Loss on long-lived assets, net		0
Goodwill impairment	0
Operating income (loss)	(17.7)	(13.6)
Earnings from unconsolidated affiliates, net	0	0
Interest and debt expense, net	(36.1)	(29.9)
Loss from unconsolidated affiliates	(41.5)	72.6
Loss before income taxes	(95.3)	29.1
Provision for income taxes	0	0
Net income (loss)	(95.3)	29.1
Net income attributable to non-controlling partners in subsidiaries	0	0
Net income (loss) attributable to parent	(95.3)	29.1
Net income (loss) attributable to preferred unit holders		9.2
Net income (loss) attributable to partners		19.9
Crestwood Midstream Partners LP | Guarantor Subsidiaries
Revenues	536	731.5
Total costs of products/services sold	363.4	529.7
Expenses:
Operations and maintenance	41.7	50.6
General and administrative	4.5	12.2
Depreciation, amortization and accretion	64.9	68.6
Costs and Expenses	111.1	131.4
Loss on long-lived assets, net		(0.8)
Goodwill impairment	(109.7)
Operating income (loss)	(48.2)	69.6
Earnings from unconsolidated affiliates, net	0	0
Interest and debt expense, net	0	0
Loss from unconsolidated affiliates	0	0
Loss before income taxes	(48.2)	69.6
Provision for income taxes	(0.2)	0.4
Net income (loss)	(48)	69.2
Net income attributable to non-controlling partners in subsidiaries	0	0
Net income (loss) attributable to parent	(48)	69.2
Net income (loss) attributable to preferred unit holders		0
Net income (loss) attributable to partners		69.2
Crestwood Midstream Partners LP | Non-Guarantor Subsidiaries
Revenues	0	0
Total costs of products/services sold	0	0
Expenses:
Operations and maintenance	0	0
General and administrative	0	0
Depreciation, amortization and accretion	0	0
Costs and Expenses	0	0
Loss on long-lived assets, net		0
Goodwill impairment	0
Operating income (loss)	0	0
Earnings from unconsolidated affiliates, net	6.5	3.4
Interest and debt expense, net	0	0
Loss from unconsolidated affiliates	0	0
Loss before income taxes	6.5	3.4
Provision for income taxes	0	0
Net income (loss)	6.5	3.4
Net income attributable to non-controlling partners in subsidiaries	5.9	5.6
Net income (loss) attributable to parent	0.6	(2.2)
Net income (loss) attributable to preferred unit holders		0
Net income (loss) attributable to partners		(2.2)
Crestwood Midstream Partners LP | Eliminations
Revenues	0	0
Total costs of products/services sold	0	0
Expenses:
Operations and maintenance	0	0
General and administrative	0	0
Depreciation, amortization and accretion	0	0
Costs and Expenses	0	0
Loss on long-lived assets, net		0
Goodwill impairment	0
Operating income (loss)	0	0
Earnings from unconsolidated affiliates, net	0	0
Interest and debt expense, net	0	0
Loss from unconsolidated affiliates	41.5	(72.6)
Loss before income taxes	41.5	(72.6)
Provision for income taxes	0	0
Net income (loss)	41.5	(72.6)
Net income attributable to non-controlling partners in subsidiaries	0	0
Net income (loss) attributable to parent	$ 41.5	(72.6)
Net income (loss) attributable to preferred unit holders		0
Net income (loss) attributable to partners		$ (72.6)

Condensed Consolidating Finan56

Condensed Consolidating Financial Information (Statements Of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities	$ 134.3	$ 156.6
Cash flows from investing activities:
Purchases of property, plant and equipment	(55.6)	(47.4)
Investment in unconsolidated affiliates	(5.5)	(18.1)
Proceeds from sale of assets	0.8	0.5
Payments for (Proceeds from) Other Investing Activities	0	(0.2)
Net cash used in investing activities	(60.3)	(65.2)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	313.5	1,252.7
Principal payments on long-term debt	(286.2)	(1,169.9)
Payments on capital leases	(0.5)	(0.7)
Payments for debt-related deferred costs	(0.1)	(11.1)
Distributions to partners	(95.6)	(25.8)
Distributions paid to non-controlling partners	(3.8)	(74.3)
Taxes paid for unit-based compensation vesting	(0.6)	(3.1)
Other	(0.1)	(0.3)
Net cash provided by (used in) financing activities	(73.4)	(32.5)
Net change in cash	0.6	58.9
Cash at beginning of period	0.5
Cash at end of period	1.1	67.7
Crestwood Midstream Partners LP
Cash flows from operating activities	135.7	105.7
Cash flows from investing activities:
Purchases of property, plant and equipment	(55.6)	(47.4)
Investment in unconsolidated affiliates	(5.5)	(17.9)
Proceeds from sale of assets	0.8	0.5
Capital contributions to consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities	0	(0.2)
Net cash used in investing activities	(60.3)	(65)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	313.5	1,114.6
Principal payments on long-term debt	(286)	(970.4)
Payments on capital leases	(0.5)	(0.7)
Payments for debt-related deferred costs	(0.1)	(11.1)
Distributions to partners	(101)	(111.4)
Distributions paid to non-controlling partners	0	0
Taxes paid for unit-based compensation vesting	(0.6)	(1.7)
Change in intercompany balances	0	0
Other	0	(0.2)
Net cash provided by (used in) financing activities	(74.7)	19.1
Net change in cash	0.7	59.8
Cash at beginning of period	0.1	7.6
Cash at end of period	0.8	67.4
Crestwood Midstream Partners LP | Parent Company
Cash flows from operating activities	(42.7)	(54.8)
Cash flows from investing activities:
Purchases of property, plant and equipment	(0.9)	(0.1)
Investment in unconsolidated affiliates	0	0
Proceeds from sale of assets	0	0
Capital contributions to consolidated affiliates	(3.7)	(17.9)
Payments for (Proceeds from) Other Investing Activities		0
Net cash used in investing activities	(4.6)	(18)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	313.5	1,114.6
Principal payments on long-term debt	(286)	(970.4)
Payments on capital leases	0	(0.5)
Payments for debt-related deferred costs	(0.1)	(11.1)
Distributions to partners	(97.2)	(111.4)
Distributions paid to non-controlling partners	0	0
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	117.8	51.8
Other		(0.2)
Net cash provided by (used in) financing activities	48	72.8
Net change in cash	0.7	0
Cash at beginning of period	0.1	0
Cash at end of period	0.8	0
Crestwood Midstream Partners LP | Guarantor Subsidiaries
Cash flows from operating activities	172.8	160.5
Cash flows from investing activities:
Purchases of property, plant and equipment	(54.7)	(47.3)
Investment in unconsolidated affiliates	0	0
Proceeds from sale of assets	0.8	0.5
Capital contributions to consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities		(0.2)
Net cash used in investing activities	(53.9)	(47)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Principal payments on long-term debt	0	0
Payments on capital leases	(0.5)	(0.2)
Payments for debt-related deferred costs	0	0
Distributions to partners	0	0
Distributions paid to non-controlling partners	0	0
Taxes paid for unit-based compensation vesting	(0.6)	(1.7)
Change in intercompany balances	(117.8)	(51.8)
Other		0
Net cash provided by (used in) financing activities	(118.9)	(53.7)
Net change in cash	0	59.8
Cash at beginning of period	0	7.6
Cash at end of period	0	67.4
Crestwood Midstream Partners LP | Non-Guarantor Subsidiaries
Cash flows from operating activities	5.6	0
Cash flows from investing activities:
Purchases of property, plant and equipment	0	0
Investment in unconsolidated affiliates	(5.5)	(17.9)
Proceeds from sale of assets	0	0
Capital contributions to consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities		0
Net cash used in investing activities	(5.5)	(17.9)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Principal payments on long-term debt	0	0
Payments on capital leases	0	0
Payments for debt-related deferred costs	0	0
Distributions to partners	(3.8)	0
Distributions paid to non-controlling partners	3.7	17.9
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	0	0
Other		0
Net cash provided by (used in) financing activities	(0.1)	17.9
Net change in cash	0	0
Cash at beginning of period	0	0
Cash at end of period	0	0
Crestwood Midstream Partners LP | Eliminations
Cash flows from operating activities	0	0
Cash flows from investing activities:
Purchases of property, plant and equipment	0	0
Investment in unconsolidated affiliates	0	0
Proceeds from sale of assets	0	0
Capital contributions to consolidated affiliates	3.7	17.9
Payments for (Proceeds from) Other Investing Activities		0
Net cash used in investing activities	3.7	17.9
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Principal payments on long-term debt	0	0
Payments on capital leases	0	0
Payments for debt-related deferred costs	0	0
Distributions to partners	0	0
Distributions paid to non-controlling partners	(3.7)	(17.9)
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	0	0
Other		0
Net cash provided by (used in) financing activities	(3.7)	(17.9)
Net change in cash	0	0
Cash at beginning of period	0	0
Cash at end of period	$ 0	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2016	Mar. 31, 2016	Mar. 31, 2015
Subsequent Event [Line Items]
Proceeds from sale of assets		$ 0.8	$ 0.5
Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of assets	$ 975
CEGP | Subsequent Event
Subsequent Event [Line Items]
Ownership Percentage	50.00%