Crestwood Equity Partners (CEQP+) 10-Q 4 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 29, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
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		69,054,059
Crestwood Midstream Partners LP
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
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	Jun. 30, 2016	Dec. 31, 2015
Assets
Cash	$ 0.9	$ 0.5
Accounts receivable	247.5	236.5
Inventory	43.5	44.5
Assets from price risk management activities	9.5	32.6
Assets Held-for-sale, Not Part of Disposal Group, Current	55	0
Prepaid expenses and other current assets	10.9	21.7
Total current assets	367.3	335.8
Property, plant and equipment	2,538.9	3,747.7
Less: accumulated depreciation and depletion	390.9	436.9
Property, plant and equipment, net	2,148	3,310.8
Intangible assets	946.8	975.8
Less: accumulated amortization	225	206.6
Intangible assets, net	721.8	769.2
Goodwill	249.5	1,085.5
Investment in unconsolidated affiliates (Note 4)	1,099.1	254.3
Other assets	7.7	7.2
Total assets	4,593.4	5,762.8
Current liabilities:
Accounts payable	164.5	144.1
Accrued expenses and other liabilities (Note 3)	101.2	105.6
Liabilities from price risk management activities	10.9	7.4
Current portion of long-term debt (Note 7)	0.9	1.1
Total current liabilities	277.5	258.2
Long-term debt, less current portion (Note 7)	1,581.6	2,501.8
Other long-term liabilities	45.1	47.5
Deferred income taxes	7.8	8.4
Commitments and contingencies (Note 10)
Partners’ capital (Note 9):
Crestwood Equity Partners LP partners’ capital (69,487,799 and 68,555,305 common and subordinated units issued and outstanding at June 30, 2016 and December 31, 2015)	1,948.1	2,227.6
Preferred units (63,559,359 and 60,718,245 units issued and outstanding at June 30, 2016 and December 31, 2015)	545.5	535.8
Total company partners’ capital	2,493.6	2,763.4
Interest of non-controlling partners in subsidiaries	187.8	183.5
Total partners’ capital	2,681.4	2,946.9
Total liabilities and partners’ capital	4,593.4	5,762.8
Crestwood Midstream Partners LP
Assets
Cash	0.2	0.1
Accounts receivable	244.3	236.5
Inventory	43.5	44.5
Assets from price risk management activities	9.5	32.6
Assets Held-for-sale, Not Part of Disposal Group, Current	55	0
Prepaid expenses and other current assets	10.3	19.9
Total current assets	362.8	333.6
Property, plant and equipment	2,869	4,077.7
Less: accumulated depreciation and depletion	513.1	552
Property, plant and equipment, net	2,355.9	3,525.7
Intangible assets	930.3	959.3
Less: accumulated amortization	214.6	197.9
Intangible assets, net	715.7	761.4
Goodwill	249.5	1,085.5
Investment in unconsolidated affiliates (Note 4)	1,099.1	254.3
Other assets	2.9	3.1
Total assets	4,785.9	5,963.6
Current liabilities:
Accounts payable	161.8	141.4
Accrued expenses and other liabilities (Note 3)	94.5	103.3
Liabilities from price risk management activities	10.9	7.4
Current portion of long-term debt (Note 7)	0.9	0.9
Total current liabilities	268.1	253
Long-term debt, less current portion (Note 7)	1,581.6	2,501.8
Other long-term liabilities	40.9	43.3
Deferred income taxes	0.7	0.4
Partners’ capital (Note 9):
Total company partners’ capital	2,706.8	2,981.6
Interest of non-controlling partners in subsidiaries	187.8	183.5
Total partners’ capital	2,894.6	3,165.1
Total liabilities and partners’ capital	$ 4,785.9	$ 5,963.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Limited Partners' Capital Account, Units Issued	69,487,799	68,555,305
Limited Partners' Capital Account, Units Outstanding	69,487,799	68,555,305
Preferred Units, Issued	63,559,359	60,718,245
Preferred Units, Outstanding	63,559,359	60,718,245

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Gathering and processing	$ 199.1	$ 263.3	$ 361.6	$ 524.2
Marketing, supply and logistics	257.4	196.5	463.9	473.7
Total product revenue	456.5	459.8	825.5	997.9
Gathering and processing	69.7	82.4	145.4	170.8
Storage and transportation	53.8	68.5	113.2	136.1
Marketing, supply and logistics	21.2	29.7	52.4	66.1
Related party (Note 13)	0.7	1.1	1.4	2.1
Total services revenues	145.4	181.7	312.4	375.1
Total revenues	601.9	641.5	1,137.9	1,373
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	221.9	285.3	397.3	543.5
Marketing, supply and logistics	210	147.1	376	389.3
Related party (Note 11)	4.4	7.7	8.7	16
Total product costs	436.3	440.1	782	948.8
Gathering and processing	0	0.1	0.1	0.3
Storage and transportation	1.9	5.3	4.8	10.6
Marketing, supply and logistics	11.8	14	26.5	29.5
Total service costs	13.7	19.4	31.4	40.4
Total costs of products/services sold	450	459.5	813.4	989.2
Expenses:
Operations and maintenance	45	43.9	86.8	94.5
General and administrative	28.9	30.6	51.9	58.1
Depreciation, amortization and accretion	64.4	74.8	126.7	149
Total Expenses	138.3	149.3	265.4	301.6
Loss on long-lived assets, net	(32.7)	(0.6)	(32.7)	(1.6)
Goodwill impairment	0	(281)	(109.7)	(281)
Operating loss	(19.1)	(248.9)	(83.3)	(200.4)
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Interest and debt expense, net	(34.3)	(35.4)	(70.4)	(69)
Gains (Losses) on Extinguishment of Debt	10	(17.1)	10	(17.1)
Other income, net	0.1	0.1	0.2	0.3
Loss before income taxes	(37.1)	(296.3)	(130.8)	(277.8)
Provision (benefit) for income taxes	0	(0.3)	0	0.1
Net loss	(37.1)	(296)	(130.8)	(277.9)
Net Income (Loss) Attributable to Noncontrolling Interest	6	(256)	11.9	(246.2)
Net income (loss) attributable to parent	(43.1)	(40)	(142.7)	(31.7)
Net income (loss) attributable to preferred unit holders	8.1	0	9.7	0
Net loss attributable to partners	(51.2)	(40)	(152.4)	(31.7)
Subordinated unitholders' interest in net loss	0	(0.9)	0	(0.7)
Common unitholders' interest in net loss	$ (51.2)	$ (39.1)	$ (152.4)	$ (31)
Net loss per limited partner unit:
Basic (in dollars per share)	$ (0.74)	$ (2.14)	$ (2.21)	$ (1.69)
Diluted (in dollars per share)	$ (0.74)	$ (2.14)	$ (2.21)	$ (1.70)
Weighted-average limited partners’ units outstanding (in thousands):
Basic (units)	69,044	18,284	68,978	18,282
Dilutive units (units)	0	439	0	439
Diluted (units)	69,044	18,723	68,978	18,721
Crestwood Midstream Partners LP
Revenues:
Gathering and processing	$ 199.1	$ 263.3	$ 361.6	$ 524.2
Marketing, supply and logistics	257.4	196.5	463.9	473.7
Total product revenue	456.5	459.8	825.5	997.9
Gathering and processing	69.7	82.4	145.4	170.8
Storage and transportation	53.8	68.5	113.2	136.1
Marketing, supply and logistics	21.2	29.7	52.4	66.1
Related party (Note 13)	0.7	1.1	1.4	2.1
Total services revenues	145.4	181.7	312.4	375.1
Total revenues	601.9	641.5	1,137.9	1,373
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	221.9	285.3	397.3	543.5
Marketing, supply and logistics	210	147.1	376	389.3
Related party (Note 11)	4.4	7.7	8.7	16
Total product costs	436.3	440.1	782	948.8
Gathering and processing	0	0.1	0.1	0.3
Storage and transportation	1.9	5.3	4.8	10.6
Marketing, supply and logistics	11.8	14	26.5	29.5
Total service costs	13.7	19.4	31.4	40.4
Total costs of products/services sold	450	459.5	813.4	989.2
Expenses:
Operations and maintenance	41.4	43.9	83.1	94.5
General and administrative	28	27.3	50.2	52.9
Depreciation, amortization and accretion	67.1	69.5	132	138.3
Total Expenses	136.5	140.7	265.3	285.7
Loss on long-lived assets, net	(32.7)	(0.7)	(32.7)	(1.5)
Goodwill impairment	0	(68.6)	(109.7)	(68.6)
Operating loss	(17.3)	(28)	(83.2)	28
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Interest and debt expense, net	(34.3)	(32.6)	(70.4)	(62.5)
Gains (Losses) on Extinguishment of Debt	10	(17.1)	10	(17.1)
Loss before income taxes	(35.4)	(72.7)	(130.9)	(43.2)
Provision (benefit) for income taxes	0.2	0.1	0	0.5
Net loss	(35.6)	(72.8)	(130.9)	(43.7)
Net Income (Loss) Attributable to Noncontrolling Interest	6	5.7	11.9	11.3
Net income (loss) attributable to parent	(41.6)	(78.5)	(142.8)	(55)
Net income (loss) attributable to preferred unit holders	0	7.5	0	16.7
Net loss attributable to partners	$ (41.6)	$ (86)	$ (142.8)	$ (71.7)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (37.1)	$ (296)	$ (130.8)	$ (277.9)
Change in fair value of Suburban Propane Partners, L.P. units	0.5	(0.4)	1.3	(0.4)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(36.6)	(296.4)	(129.5)	(278.3)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	6	(256)	11.9	(246.2)
Comprehensive loss attributable to Crestwood Equity Partners LP	$ (42.6)	$ (40.4)	$ (141.4)	$ (32.1)

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	Preferred Units	Subordinated Units
Common Unit, Outstanding										68,200,000		400,000
Preferred Units, Outstanding	60,718,245										60,700,000
Preferred Stock Dividends, Shares	2,841,114										2,800,000
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	(137)	(7.6)	(144.6)	148.2	(140.6)	(7.6)	(148.2)
Change in fair value of Suburban Propane Partners, L.P. units	1.3	0	1.3	0	1.3
Unit-based compensation charges		0	9.3	0	9.3		9.3	0	9.3
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 preferred unit holders	9.7	9.7				0
Net loss attributable to partners	(152.4)		(152.4)			(142.8)
Net Income (Loss) Attributable to Noncontrolling Interest	11.9			11.9		11.9
Net loss	(130.8)				(130.8)	(130.9)	(142.8)		(130.9)
Balance at June 30, 2016 at Jun. 30, 2016	$ 2,493.6	$ 545.5	$ 1,948.1	$ 187.8	$ 2,681.4	$ 2,706.8	$ 2,706.8	$ 187.8	$ 2,894.6
Common Unit, Outstanding										69,100,000		400,000
Preferred Units, Outstanding	63,559,359										63,500,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities
Net loss	$ (130.8)	$ (277.9)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and accretion	126.7	149
Amortization of debt-related deferred costs, discounts and premiums	3.4	4.4
Market adjustment on interest rate swaps	0	(0.5)
Unit-based compensation charges	9.3	11.7
Loss on long-lived assets, net	32.7	1.6
Gains (Losses) on Extinguishment of Debt	(10)	17.1
Goodwill impairment	109.7	281
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(0.8)	(2.1)
Deferred income taxes	(0.6)	(1.6)
Other	0.1	0.4
Changes in operating assets and liabilities	53.3	28
Net cash provided by operating activities	193	211.1
Investing activities
Purchases of property, plant and equipment	(76.2)	(83.5)
Investment in unconsolidated affiliates	(5.5)	(28)
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital	5.5	1
Net proceeds from sale of assets	942	2.1
Net cash provided by (used in) investing activities	865.8	(108.4)
Financing activities
Proceeds from the issuance of long-term debt	1,078.8	2,154.6
Principal payments on long-term debt	(1,987.7)	(2,030.6)
Payments on capital leases	(0.9)	(1.2)
Payments for debt-related deferred costs	(3.3)	(11.7)
Distributions to partners	137	51.5
Distributions paid to non-controlling partners	(7.6)	(152.4)
Taxes paid for unit-based compensation vesting	(0.6)	(3.7)
Other	(0.1)	(0.1)
Net cash used in financing activities	(1,058.4)	(110.2)
Net change in cash	0.4	(7.5)
Cash at beginning of period	0.5
Cash at end of period	0.9	1.3
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	(11.9)	(11.3)
Crestwood Midstream Partners LP
Early Repayment of Senior Debt	0	(13.6)
Operating activities
Net loss	(130.9)	(43.7)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and accretion	132	138.3
Amortization of debt-related deferred costs, discounts and premiums	3.4	3.9
Unit-based compensation charges	9.3	10.5
Loss on long-lived assets, net	32.7	1.5
Gains (Losses) on Extinguishment of Debt	(10)	17.1
Goodwill impairment	109.7	68.6
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(0.8)	(2.1)
Deferred income taxes	0.2	0.3
Other	0.1	0.2
Changes in operating assets and liabilities	50.3	8.9
Net cash provided by operating activities	196	203.5
Investing activities
Purchases of property, plant and equipment	(76.2)	(83.5)
Investment in unconsolidated affiliates	(5.5)	(27.8)
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital	5.5	1
Net proceeds from sale of assets	942	2.1
Net cash provided by (used in) investing activities	865.8	(108.2)
Financing activities
Proceeds from the issuance of long-term debt	1,078.8	1,865.1
Principal payments on long-term debt	(1,987.5)	(1,713.2)
Payments on capital leases	(0.9)	(1.2)
Payments for debt-related deferred costs	(3.3)	(11.7)
Distributions to partners	(148.2)	(225.2)
Distributions to partners	148.2	225.2
Distributions paid to non-controlling partners	0	0
Taxes paid for unit-based compensation vesting	(0.6)	(2.1)
Other	0	(0.2)
Net cash used in financing activities	(1,061.7)	(102.1)
Net change in cash	0.1	(6.8)
Cash at beginning of period	0.1	7.6
Cash at end of period	0.2	0.8
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	$ (11.9)	$ (11.3)

Organization and Business Descr

Organization and Business Description	6 Months Ended
	Jun. 30, 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 June 30, 2016 , and for the three and six months ended June 30, 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	6 Months Ended
	Jun. 30, 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 statements of operations for the three and six months ended June 30, 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 certain of our accounting policies. Principles of Consolidation We consolidate entities when we have the ability to control or direct the operating and financial decisions of the entity or when we have a significant interest in the entity that give us the ability to direct the activities that are significant to that entity. The determination to consolidate or apply the equity method of accounting to an entity can also require us to evaluate whether the entity is considered a variable interest entity. This evaluation, along with the determination of our ability to control, direct or exert significant influence over an entity involves the use of judgment. We apply the equity method of accounting where we can exert significant influence over, but do not control or direct the policies, decisions or activities of an entity. We use the cost method of accounting where we are unable to exert significant influence over the entity. 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, Stagecoach Gas Services LLC (Stagecoach Gas), 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) and our 37.5 mile intrastate natural gas pipeline located in New York which is owned by Crestwood Pipeline East LLC (Pipeline East). On June 3, 2016, we contributed to Stagecoach Gas the entities owning the NE S&T assets, CEGP contributed $945 million to Stagecoach Gas in exchange for a 50% equity interest in Stagecoach Gas, and Stagecoach Gas distributed to Crestwood Northeast the net cash proceeds received from CEGP. Our NE S&T assets were previously included in our storage and transportation segment. Effective June 3, 2016, we deconsolidated the NE S&T assets as a result of the contribution of these assets to Stagecoach Gas as described above and began accounting for our 50% equity interest in Stagecoach Gas under the equity method of accounting and recorded our Pipeline East assets as assets held for sale as of June 30, 2016. See Notes 3 and 4 for a further discussion of our investment in Stagecoach Gas and our assets held for sale. The deconsolidation of our NE S&T assets resulted in a decrease of $1,094.6 million in property, plant and equipment, net, $8.5 million of intangible assets, net and $10.9 million of other assets and liabilities, net as of June 30, 2016 . For a discussion of decreases in goodwill associated with the joint venture transactions, see " Goodwill " below. 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 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 June 30, 2016 and December 31, 2015. Assets Held for Sale We classify assets (or groups of assets) to be disposed of as held for sale when specific criteria have been met. Assets classified as held for sale are recorded at the lower of the carrying value or the estimated fair value less cost to sell of those assets . We cease depreciation and amortization of the assets in the period they are considered held for sale. 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 during the first quarter of 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 first quarter of 2016. We did not record any goodwill impairments during the three months ended June 30, 2016 . The following table summarizes the goodwill of our various reporting units (in millions): Goodwill at Goodwill Impairments during the Six Months Ended Deconsolidation of NE S&T Assets at Goodwill at December 31, 2015 June 30, 2016 June 30, 2016 June 30, 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 $ 726.3 $ 249.5 The goodwill impairments recorded during the first quarter of 2016 primarily resulted from increasing the discount rates utilized in determining the fair value of the reporting units for certain of those 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 represented the fair value of the goodwill, 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. During the three months ended June 30, 2015 , Crestwood Midstream recorded goodwill impairments of $8.3 million , $28.4 million and $31.9 million related to its Fayetteville, West Coast and Watkins Glen reporting units, respectively. The impairment of the Fayetteville and West Coast goodwill primarily resulted from increasing the discount rate utilized in determining the fair value of the reporting units from 9% to 10% , considering the decrease in commodity prices and its impact on the midstream industry and Crestwood Midstream's customers in those areas. The impairment of the Watkins Glen goodwill primarily resulted from increasing the discount rate utilized in determining the fair value of the reporting unit from 10.5% to 13.3% and delays and uncertainties in the permitting of the proposed storage facility. In addition to the above goodwill impairments recorded during the three months ended June 30, 2015 , Crestwood Equity recorded a goodwill impairment of its Barnett reporting unit of approximately $212.4 million . The impairment primarily resulted from increasing the discount rate utilized in determining the fair value of the reporting unit from 9% to 11% , considering the recent actions of its primary customer in the Barnett Shale, Quicksilver, related to its filing for protection under Chapter 11 of the U.S. Bankruptcy Code in March 2015. 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 $37.6 million and $40.9 million as a reduction of long-term debt on our consolidated balance sheets at June 30, 2016 and December 31, 2015 . Such costs were previously reflected as intangible assets on our consolidated balance sheets. New Accounting Pronouncements Issued But Not Yet Adopted As of June 30, 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 method by which we will adopt the standard and 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	6 Months Ended
	Jun. 30, 2016
Balance Sheet Related Disclosures [Abstract]
Certain Balance Sheet Information	Certain Balance Sheet Information Assets Held for Sale In conjunction with the contribution agreement related to Stagecoach Gas, we agreed to contribute our wholly-owned subsidiary, Pipeline East, to Stagecoach Gas, CEGP has agreed to contribute approximately $30 million to Stagecoach Gas, and Stagecoach Gas will distribute to us the net cash proceeds received from CEGP. We classified the property, plant and equipment and goodwill to be contributed to Stagecoach Gas as assets held for sale on our consolidated balance sheet at their fair value at June 30, 2016. The fair value is based on the consideration to be received from the contribution of Pipeline East to Stagecoach Gas and the forecasted discounted cash flows to be received from our investment in Stagecoach Gas, which is a Level 3 fair value measurement. The sale is contingent upon New York State regulatory approval and satisfaction of certain other closing conditions, which we believe is probable at June 30, 2016. Accrued Expenses and Other Liabilities Accrued expenses and other liabilities consisted of the following at June 30, 2016 and December 31, 2015 ( in millions ): CEQP CMLP June 30, December 31, June 30, December 31, 2016 2015 2016 2015 Accrued expenses $ 35.5 $ 46.4 $ 33.8 $ 44.1 Accrued property taxes 12.3 4.8 7.3 4.8 Accrued product purchases payable 2.8 1.5 2.8 1.5 Tax payable 0.6 0.5 0.6 0.5 Interest payable 23.2 26.2 23.2 26.2 Accrued additions to property, plant and equipment 2.9 10.4 2.9 10.4 Capital leases 1.3 1.6 1.3 1.6 Deferred revenue 22.6 14.2 22.6 14.2 Total accrued expenses and other liabilities $ 101.2 $ 105.6 $ 94.5 $ 103.3

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	6 Months Ended
	Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Stagecoach Gas Services LLC. In April 2016, Crestwood Northeast and CEGP entered into a definitive agreement to form the Stagecoach JV to own and further develop our NE S&T assets. Pursuant to the contribution agreement, we contributed to Stagecoach Gas the entities owning the NE S&T assets, CEGP contributed $945 million to Stagecoach Gas in exchange for a 50% equity interest in Stagecoach Gas, and Stagecoach Gas distributed to Crestwood Northeast the cash proceeds received (net of approximately $3 million of cash transferred to the joint venture) from CEGP. Effective June 3, 2016, we deconsolidated the NE S&T assets as a result of this transaction and began accounting for our 50% equity interest in Stagecoach Gas under the equity method of accounting, and we reflected our investment at $844 million , which represented the fair value of our proportionate share of the assets at June 3, 2016 and is based on the forecasted discounted cash flows of the investment (which is a Level 3 fair value measurement). We recognized a loss on the deconsolidation of the NE S&T assets of approximately $32.9 million . See our 2015 Annual Report on Form 10-K for a description of our NE S&T assets. 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 (Loss) from Unconsolidated Affiliates June 30, June 30, December 31, Three Months Ended June 30, Six Months Ended June 30, 2016 2016 2015 2016 2015 2016 2015 Stagecoach Gas Services LLC (1) 50.00 % $ 846.3 $ — $ 2.3 $ — $ 2.3 $ — Jackalope Gas Gathering Services, L.L.C. (2) 50.00 % (3) 201.3 202.4 5.9 1.1 11.0 3.6 Tres Palacios Holdings LLC (4) 50.01 % 36.7 36.8 (2.3 ) 0.6 (1.5 ) 1.5 Powder River Basin Industrial Complex, LLC (5) 50.01 % 14.8 15.1 0.3 3.3 0.9 3.3 Total $ 1,099.1 $ 254.3 $ 6.2 $ 5.0 $ 12.7 $ 8.4 (1) As of June 30, 2016 , our equity in the underlying net assets of Stagecoach Gas exceeded our investment balance by approximately $50.8 million . Our Stagecoach Gas investment is included in our storage and transportation segment. (2) As of June 30, 2016 , our equity in the underlying net assets of Jackalope Gas Gathering Services, L.L.C. (Jackalope) exceeded our investment balance by approximately $0.8 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 for both the three and six months ended June 30, 2016 and $0.7 million and $1.5 million for the three and six months ended June 30, 2015 . Our Jackalope investment is included in our gathering and processing segment. (3) 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. (4) As of June 30, 2016 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $28.5 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 for the three months ended June 30, 2016 and 2015 , and $0.6 million for the six months ended June 30, 2016 and 2015 . Our Tres Holdings investment is included in our storage and transportation segment. (5) As of June 30, 2016 , our equity in the underlying net assets of PRBIC exceeded our investment balance by approximately $22.6 million . We amortize a portion of 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. Approximately $10.6 million of this excess amount relates to goodwill and, as such, is not subject to amortization. We recorded amortization of approximately $0.4 million and $0.8 million for the three and six months ended June 30, 2016 . During the three and six months ended June 30, 2015, we recorded additional equity earnings of approximately $3.2 million related to a gain associated with the adjustment of our member's capital account by our equity investee. Our PRBIC investment is included in our storage and transportation segment. Distributions and Contributions Stagecoach Gas. Stagecoach Gas is required, within 30 days following the end of each quarter, to distribute 65% and 35% of its available cash (as defined in its limited liability company agreement) to CEQP and us, respectively. Because our ownership and distribution percentages differ, we determine the equity earnings from Stagecoach Gas using the Hypothetical Liquidation at Book Value (HLBV) method. Under the HLBV method, a calculation is prepared at each balance sheet date to determine the amount that we would receive if Stagecoach Gas were to liquidate all of its assets, as valued in accordance with GAAP, and distribute that cash to the members. The difference between the calculated liquidation distribution amounts at the beginning and the end of the reporting period, after adjusting for capital contributions and distributions, is our share of the earnings or losses from the equity investment for the period, which approximates how earnings are allocated under the terms of the limited liability company agreement. In July 2016, we received a cash distribution of approximately $3.7 million from Stagecoach Gas. 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 six months ended June 30, 2016 and 2015 , we received cash distributions of approximately $12.1 million and $4.5 million from Jackalope. During the six months ended June 30, 2015 , we contributed approximately $17.9 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 six months ended June 30, 2016 and 2015 , we received cash distributions of approximately $4.1 million and $2.1 million from Tres Holdings. In July 2016, we received a cash distribution of approximately $2.1 million from Tres Holdings. During the six months ended June 30, 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 six months ended June 30, 2016 and 2015 , we received cash distributions of approximately $1.2 million and $0.7 million from PRBIC. In July 2016, we received a cash distribution of approximately $0.4 million from PRBIC. During the six months ended June 30, 2015 , we contributed approximately $4.2 million to PRBIC.

Risk Management

Risk Management	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2016 , the impact to the statement of operations related to our commodity-based derivatives reflected in costs of product/services sold was a gain of $1.3 million and $2.0 million . During the three and six months ended June 30, 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 $2.9 million and $5.3 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 June 30, 2016 and December 31, 2015 ( in millions ): June 30, 2016 December 31, 2015 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, crude and heating oil ( barrels ) 12.4 13.8 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 34 months or less; however, 82% 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 June 30, 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 June 30, 2016 and December 31, 2015 was $5.5 million and $3.3 million . At June 30, 2016 and December 31, 2015 , we posted less than $0.1 million of collateral for our commodity derivative instruments with credit-risk-related contingent features. In addition, at June 30, 2016 and December 31, 2015 , we had a New York Mercantile Exchange (NYMEX) related net derivative liability position of $9.3 million and $20.8 million , for which we posted $6.1 million and $26.7 million of cash collateral in the normal course of business. At June 30, 2016 and December 31, 2015 , we also received collateral of $5.0 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	6 Months Ended
	Jun. 30, 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 June 30, 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 June 30, 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 ): June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Crestwood Midstream 2020 Senior Notes $ 340.8 $ 319.9 $ 503.3 $ 382.3 Crestwood Midstream 2022 Senior Notes $ 436.4 $ 400.8 $ 600.0 $ 437.4 Crestwood Midstream 2023 Senior Notes $ 700.0 $ 645.8 $ 700.0 $ 491.8 Financial Assets and Liabilities As of June 30, 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 June 30, 2016 and December 31, 2015 ( in millions ): June 30, 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 $ 0.2 $ 44.0 $ — $ 44.2 $ (28.9 ) $ (5.8 ) $ 9.5 Suburban Propane Partners, L.P. units (2) 4.7 — — 4.7 — — 4.7 Total assets at fair value $ 4.9 $ 44.0 $ — $ 48.9 $ (28.9 ) $ (5.8 ) $ 14.2 Liabilities Liabilities from price risk management $ 0.2 $ 37.5 $ — $ 37.7 $ (28.9 ) $ 2.1 $ 10.9 Total liabilities at fair value $ 0.2 $ 37.5 $ — $ 37.7 $ (28.9 ) $ 2.1 $ 10.9 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	6 Months Ended
	Jun. 30, 2016
Text Block [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following at June 30, 2016 and December 31, 2015 ( in millions ): June 30, December 31, Credit Facility $ 139.0 $ 735.0 2020 Senior Notes 338.8 500.0 Fair value adjustment of 2020 Senior Notes 2.0 3.3 2022 Senior Notes 436.4 600.0 2023 Senior Notes 700.0 700.0 Other 3.9 5.3 Less: deferred financing costs, net 37.6 40.9 Total Crestwood Midstream debt 1,582.5 2,502.7 Other — 0.2 Total Crestwood Equity debt 1,582.5 2,502.9 Less: current portion 0.9 1.1 Total long-term debt, less current portion $ 1,581.6 $ 2,501.8 Crestwood Midstream Credit Facility In conjunction with the contribution agreement with CEGP, Crestwood Midstream amended its credit facility during the second quarter of 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 the borrowings under its credit facility. At June 30, 2016 , Crestwood Midstream had $613.9 million of available capacity under its credit facility considering the most restrictive debt covenants in its credit agreement. At June 30, 2016 and December 31, 2015 , Crestwood Midstream's outstanding standby letters of credit were $62.1 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 3.21% and 5.25% at June 30, 2016 and 2.70% and 5.00% at December 31, 2015. The weighted-average interest rate as of June 30, 2016 and December 31, 2015 was 3.30% 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 June 30, 2016 , the net debt to consolidated EBITDA was approximately 3.99 to 1.0, the consolidated EBITDA to consolidated interest expense was approximately 3.82 to 1.0, and the senior secured leverage ratio was 0.34 to 1.0. Crestwood Midstream Senior Notes In June 2016, Crestwood Midstream paid approximately $312.9 million to purchase and cancel approximately $161.2 million and $163.6 million of the principal amounts outstanding under its 2020 Senior Notes and 2022 Senior Notes, respectively, utilizing a portion of the proceeds received from Stagecoach Gas, as further discussed in Note 2. Crestwood Midstream recognized a gain on extinguishment of debt of approximately $10.0 million in conjunction with the early tender of these notes. Crestwood Midstream also paid $4.5 million and $2.6 million of accrued interest on the 2020 Senior Notes and 2022 Senior Notes, respectively, on the date they were tendered. In March 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% 2023 Senior Notes for any and all outstanding notes. The exchange offer was declared effective by the SEC on June 15, 2016 and closed on July 13, 2016. The terms of the exchange notes are substantially identical to the terms of the 2023 Senior Notes, except that the exchange notes are freely tradable. Crestwood Midstream issued the 2023 Senior Notes in March 2015. The net proceeds from the original offering of approximately $688.3 million were used to pay down borrowings under Crestwood Midstream's credit facility and for general partnership purposes. At June 30, 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	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2016 , we excluded a weighted-average of 6,355,936 and 6,284,885 common units (representing preferred units), a weighted-average of 438,789 common units in both periods (representing subordinated units), and a weighted-average of 8,438,849 common units in both periods (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 and six months ended June 30, 2015 .

Partners' Capital

Partners' Capital	6 Months Ended
	Jun. 30, 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 six months ended June 30, 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 May 6, 2016 May 13, 2016 0.60 41.4 $ 137.0 2015 February 6, 2015 February 13, 2015 $ 1.375 $ 25.8 May 8, 2015 May 15, 2015 1.375 25.7 $ 51.5 On July 21, 2016 , we declared a distribution of $0.60 per limited partner unit to be paid on August 12, 2016 , to unitholders of record on August 5, 2016 with respect to the second 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. During the six months ended June 30, 2016 , we issued 2,841,114 Preferred Units to our preferred unitholders in lieu of paying cash distributions of $25.9 million . On July 21, 2016 , the board of directors of our general partner authorized the issuance of 1,470,029 Preferred Units to our preferred unit holders for the quarter ended June 30, 2016 in lieu of paying a cash distribution of $13.4 million . On June 9, 2016, Crestwood Equity filed a shelf registration statement with the SEC under which holders of the Preferred Units may sell the common units into which the Preferred Units are convertible. The registration statement became effective on June 15, 2016. Crestwood Equity registered 7,290,552 common units under the registration statement. 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 six months ended June 30, 2016 and 2015 , Crestwood Midstream paid cash distributions of $140.6 million and $51.9 million to Crestwood Equity. During the six months ended June 30, 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 $20.9 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 six months ended June 30, 2015 . Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) February 6, 2015 February 13, 2015 $ 0.41 $ 74.3 May 8, 2015 May 15, 2015 0.41 74.3 $ 148.6 Non-Controlling Partners Crestwood Midstream Class A Preferred Units As discussed above, 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 and six months ended June 30, 2016 and 2015 , are as follows (in millions) : Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Crestwood Niobrara preferred interests $ 6.0 $ 5.7 $ 11.9 $ 11.3 CMLP net income attributable to non-controlling partners 6.0 5.7 11.9 11.3 Crestwood Midstream limited partner interests — (269.2 ) — (274.2 ) Crestwood Midstream Class A preferred units — 7.5 — 16.7 CEQP net income (loss) attributable to non-controlling partners $ 6.0 $ (256.0 ) $ 11.9 $ (246.2 ) 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 $148.6 million during the six months ended June 30, 2015 . Crestwood Midstream Class A Preferred Unit Holders . During the six months ended June 30, 2015 , Crestwood Midstream issued 838,228 Class A Preferred Units to its preferred unit holders in lieu of paying cash distributions of $21.0 million . Crestwood Niobrara Preferred Unit Holders. During the six months ended June 30, 2016 and 2015 , Crestwood Niobrara paid cash distributions of $7.6 million and $3.8 million to GE. In July 2016, Crestwood Niobrara paid a cash distribution of $3.8 million to GE for the quarter ended June 30, 2016 .

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 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 was 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. 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. The Canadian and United States bankruptcy courts approved the bankruptcy plan (including the global settlement which was funded in December 2015). 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 in United States courts but were stayed as a result of the automatic stay arising from MM&A's United States bankruptcy proceeding. Arrow was named as a defendant in 39 lawsuits pending in three different courts; however, these lawsuits were dismissed with prejudice upon disbursement of funds to the victims. The settlement of the bankruptcy proceedings and the dismissals of the Class Action Suit and United States lawsuits did not have a material impact on our consolidated results of operations 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. A hearing is scheduled for October 7, 2016 regarding the plaintiff's motion to approve the settlement. 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. In June 2016, the court issued a final judgment on the 2012 and 2013 property tax years which resulted in Crestwood Equity recording additional net property taxes (including interest and penalties) of approximately $3.5 million during the three months ended June 30, 2016 . Crestwood Equity has filed a motion for a new trial. 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 June 30, 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 June 30, 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 June 30, 2016 and December 31, 2015 , our accrual of approximately $2.6 million and $1.7 million 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 $2.6 million to $4.9 million at June 30, 2016. 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 June 30, 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 June 30, 2017. As such, CEQP has classified $11.3 million in other long-term liabilities on its consolidated balance sheet at June 30, 2016 . At June 30, 2016 and December 31, 2015 , CMLP's self insurance reserves were $12.4 million and $11.4 million . CMLP estimates that $7.1 million of this balance will be paid subsequent to June 30, 2017. As such, CMLP has classified $7.1 million in other long-term liabilities on its consolidated balance sheet at June 30, 2016 .

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 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. In May 2016, Crestwood Midstream Operations, LLC (Crestwood Midstream Operations), our wholly-owned subsidiary and Stagecoach Gas entered into a management agreement under which Crestwood Midstream Operations will provide the management and operating services required by Stagecoach Gas' facilities. The initial term of the agreement will expire in May 2021, and is automatically extended for three-year periods unless otherwise terminated pursuant to the terms of the agreement. During the three and six months ended June 30, 2016 , we charged Stagecoach Gas $0.3 million under this agreement, which is reflected as operations and maintenance expenses charged by CEQP and CMLP in the table below. The following table shows revenues, costs of product/services sold, general and administrative expenses and reimbursements of expenses from our affiliates for the three and six months ended June 30, 2016 and 2015 ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Gathering and processing revenues at CEQP and CMLP $ 0.7 $ 1.1 $ 1.4 $ 2.1 Gathering and processing costs of product/services sold at CEQP and CMLP (1) $ 4.4 $ 7.7 $ 8.7 $ 16.0 Operations and maintenance expenses charged by CEQP and CMLP $ 1.0 $ 0.7 $ 1.7 $ 1.6 General and administrative expenses charged by CEQP to CMLP, net (2) $ 3.2 $ 14.4 $ 6.9 $ 31.8 General and administrative expenses charged by (from) CEQP to Crestwood Holdings, net (3) $ (0.2 ) $ 0.1 $ (0.1 ) $ 0.2 (1) Represents natural gas purchases from Sabine Oil and Gas Corporation. (2) Includes $3.9 million and $8.4 million of net unit-based compensation charges allocated from CEQP to CMLP for the three and six months ended June 30, 2016 and $2.2 million and $4.4 million for the three and six months ended June 30, 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 and six months ended June 30, 2016 , CMLP allocated $0.7 million and $1.5 million of general and administrative costs to CEQP. (3) Includes $0.9 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three and six months ended 2016 . The following table shows accounts receivable and accounts payable from our affiliates as of June 30, 2016 and December 31, 2015 ( in millions ): CEQP CMLP June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 Accounts receivable $ 2.1 $ 1.7 $ 2.1 $ 1.7 Accounts payable $ 6.3 $ 4.0 $ 3.8 $ 1.5

Segments

Segments	6 Months Ended
	Jun. 30, 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 gain or loss on modification/extinguishment of debt) and depreciation, amortization and accretion expense. Below is a reconciliation of CEQP's net loss to EBITDA ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Net loss $ (37.1 ) $ (296.0 ) $ (130.8 ) $ (277.9 ) Add: Interest and debt expense, net 34.3 35.4 70.4 69.0 (Gain) loss on modification/extinguishment of debt (10.0 ) 17.1 (10.0 ) 17.1 Provision (benefit) for income taxes — (0.3 ) — 0.1 Depreciation, amortization and accretion 64.4 74.8 126.7 149.0 EBITDA $ 51.6 $ (169.0 ) $ 56.3 $ (42.7 ) The following tables summarize CEQP's reportable segment data for the three and six months ended June 30, 2016 and 2015 ( in millions ). Included in earnings from unconsolidated affiliates below was approximately $4.4 million and $0.7 million of depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the three months ended June 30, 2016 and 2015 and $7.0 million and $3.8 million for the six months ended June 30, 2016 and 2015 . Three Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 269.5 $ 53.8 $ 278.6 $ — $ 601.9 Intersegment revenues 30.6 1.1 (31.7 ) — — Costs of product/services sold 226.3 1.9 221.8 — 450.0 Operations and maintenance expense 20.9 8.5 15.6 — 45.0 General and administrative expense — — — 28.9 28.9 Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 5.9 0.3 — — 6.2 Other income, net — — — 0.1 0.1 EBITDA $ 58.8 $ 12.1 $ 9.5 $ (28.8 ) $ 51.6 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,394.1 $ 1,191.2 $ 974.8 $ 33.3 $ 4,593.4 Purchases of property, plant and equipment $ 4.2 $ 11.6 $ 4.7 $ 0.1 $ 20.6 Three Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 346.8 $ 68.5 $ 226.2 $ — $ 641.5 Intersegment revenues 33.8 — (33.8 ) — — Costs of product/services sold 293.1 5.3 161.1 — 459.5 Operations and maintenance expense 22.3 5.9 15.7 — 43.9 General and administrative expense — — — 30.6 30.6 Loss on long-lived assets (0.6 ) — — — (0.6 ) Goodwill impairment (220.7 ) — (60.3 ) — (281.0 ) Earnings from unconsolidated affiliates, net 1.1 3.9 — — 5.0 Other income, net — — — 0.1 0.1 EBITDA $ (155.0 ) $ 61.2 $ (44.7 ) $ (30.5 ) $ (169.0 ) Purchases of property, plant and equipment $ 28.4 $ 3.9 $ 3.6 $ 0.2 $ 36.1 Six Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 508.4 $ 113.2 $ 516.3 $ — $ 1,137.9 Intersegment revenues 51.1 1.5 (52.6 ) — — Costs of product/services sold 406.1 4.8 402.5 — 813.4 Operations and maintenance expense 38.7 15.7 32.4 — 86.8 General and administrative expense — — — 51.9 51.9 Loss on long-lived assets — (32.7 ) — — (32.7 ) Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 11.0 1.7 — — 12.7 Other income, net — — — 0.2 0.2 EBITDA $ 117.1 $ 49.5 $ (58.6 ) $ (51.7 ) $ 56.3 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,394.1 $ 1,191.2 $ 974.8 $ 33.3 $ 4,593.4 Purchases of property, plant and equipment $ 48.5 $ 14.9 $ 11.8 $ 1.0 $ 76.2 Six Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 697.1 $ 136.1 $ 539.8 $ — $ 1,373.0 Intersegment revenues 43.9 — (43.9 ) — — Costs of product/services sold 559.8 10.6 418.8 — 989.2 Operations and maintenance expense 46.4 12.3 35.8 — 94.5 General and administrative expense — — — 58.1 58.1 Goodwill impairment (220.7 ) — (60.3 ) — (281.0 ) Loss on long-lived assets (0.9 ) (0.7 ) — — (1.6 ) Earnings from unconsolidated affiliates, net 3.6 4.8 — — 8.4 Other income, net — — — 0.3 0.3 EBITDA $ (83.2 ) $ 117.3 $ (19.0 ) $ (57.8 ) $ (42.7 ) Purchases of property, plant and equipment $ 64.6 $ 8.0 $ 10.5 $ 0.4 $ 83.5 Below is a reconciliation of CMLP's net loss to EBITDA ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Net loss $ (35.6 ) $ (72.8 ) $ (130.9 ) $ (43.7 ) Add: Interest and debt expense, net 34.3 32.6 70.4 62.5 (Gain) loss on modification/extinguishment of debt (10.0 ) 17.1 (10.0 ) 17.1 Provision for income taxes 0.2 0.1 — 0.5 Depreciation, amortization and accretion 67.1 69.5 132.0 138.3 EBITDA $ 56.0 $ 46.5 $ 61.5 $ 174.7 The following tables summarize CMLP's reportable segment data for the three and six months ended June 30, 2016 and 2015 ( in millions ). Included in earnings from unconsolidated affiliates below was approximately $4.4 million and $0.7 million of depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the three months ended June 30, 2016 and 2015 and $7.0 million and $3.8 million for the six months ended June 30, 2016 and 2015 . Three Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 269.5 $ 53.8 $ 278.6 $ — $ 601.9 Intersegment revenues 30.6 1.1 (31.7 ) — — Costs of product/services sold 226.3 1.9 221.8 — 450.0 Operations and maintenance expense 20.9 4.9 15.6 — 41.4 General and administrative expense — — — 28.0 28.0 Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 5.9 0.3 — — 6.2 EBITDA $ 58.8 $ 15.7 $ 9.5 $ (28.0 ) $ 56.0 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,603.3 $ 1,188.9 $ 974.8 $ 18.9 $ 4,785.9 Purchases of property, plant and equipment $ 4.2 $ 11.6 $ 4.7 $ 0.1 $ 20.6 Three Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 346.8 $ 68.5 $ 226.2 $ — $ 641.5 Intersegment revenues 33.8 — (33.8 ) — — Costs of product/services sold 293.1 5.3 161.1 — 459.5 Operations and maintenance expense 22.3 5.9 15.7 — 43.9 General and administrative expense — — — 27.3 27.3 Goodwill impairment (8.3 ) — (60.3 ) — (68.6 ) Loss on long-lived assets (0.6 ) (0.1 ) — — (0.7 ) Earnings from unconsolidated affiliates, net 1.1 3.9 — — 5.0 EBITDA $ 57.4 $ 61.1 $ (44.7 ) $ (27.3 ) $ 46.5 Purchases of property, plant and equipment $ 28.4 $ 3.9 $ 3.6 $ 0.2 $ 36.1 Six Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 508.4 $ 113.2 $ 516.3 $ — $ 1,137.9 Intersegment revenues 51.1 1.5 (52.6 ) — — Costs of product/services sold 406.1 4.8 402.5 — 813.4 Operations and maintenance expense 38.7 12.0 32.4 — 83.1 General and administrative expense — — — 50.2 50.2 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 11.0 1.7 — — 12.7 EBITDA $ 117.1 $ 53.2 $ (58.6 ) $ (50.2 ) $ 61.5 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,603.3 $ 1,188.9 $ 974.8 $ 18.9 $ 4,785.9 Purchases of property, plant and equipment $ 48.5 $ 14.9 $ 11.8 $ 1.0 $ 76.2 Six Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 697.1 $ 136.1 $ 539.8 $ — $ 1,373.0 Intersegment revenues 43.9 — (43.9 ) — — Costs of product/services sold 559.8 10.6 418.8 — 989.2 Operations and maintenance expense 46.4 12.3 35.8 — 94.5 General and administrative expense — — — 52.9 52.9 Goodwill impairment (8.3 ) — (60.3 ) — (68.6 ) Loss on long-lived assets (0.9 ) (0.6 ) — — (1.5 ) Earnings from unconsolidated affiliates, net 3.6 4.8 — — 8.4 EBITDA $ 129.2 $ 117.4 $ (19.0 ) $ (52.9 ) $ 174.7 Purchases of property, plant and equipment $ 64.6 $ 8.0 $ 10.5 $ 0.4 $ 83.5

Condensed Consolidating Financi

Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information Crestwood Midstream is a holding company (Parent) and owns no operating assets and has no significant operations independent of its subsidiaries. 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 Delaware Basin LLC, Crestwood Niobrara, Crestwood Northeast, 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 June 30, 2016 and December 31, 2015 , and for the three and six months ended June 30, 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 June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.2 $ — $ — $ — $ 0.2 Accounts receivable — 242.4 1.9 — 244.3 Inventory — 43.5 — — 43.5 Assets held for sale — 55.0 — — 55.0 Other current assets — 19.8 — — 19.8 Total current assets 0.2 360.7 1.9 — 362.8 Property, plant and equipment, net — 2,355.9 — — 2,355.9 Goodwill and intangible assets, net — 965.2 — — 965.2 Investment in consolidated affiliates 4,310.1 — — (4,310.1 ) — Investment in unconsolidated affiliates — — 1,099.1 — 1,099.1 Other assets — 2.9 — — 2.9 Total assets $ 4,310.3 $ 3,684.7 $ 1,101.0 $ (4,310.1 ) $ 4,785.9 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 161.8 $ — $ — $ 161.8 Other current liabilities 23.4 82.9 — — 106.3 Total current liabilities 23.4 244.7 — — 268.1 Long-term liabilities: Long-term debt, less current portion 1,580.1 1.5 — — 1,581.6 Other long-term liabilities — 40.9 — — 40.9 Deferred income taxes — 0.7 — — 0.7 Partners' capital 2,706.8 3,396.9 913.2 (4,310.1 ) 2,706.8 Interest of non-controlling partners in subsidiaries — — 187.8 — 187.8 Total partners' capital 2,706.8 3,396.9 1,101.0 (4,310.1 ) 2,894.6 Total liabilities and partners' capital $ 4,310.3 $ 3,684.7 $ 1,101.0 $ (4,310.1 ) $ 4,785.9 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 June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 601.9 $ — $ — $ 601.9 Costs of product/services sold — 450.0 — — 450.0 Expenses: Operations and maintenance — 41.4 — — 41.4 General and administrative 23.2 4.8 — — 28.0 Depreciation, amortization and accretion — 67.1 — — 67.1 23.2 113.3 — — 136.5 Other operating expense: Loss on long-lived assets, net — (32.7 ) — — (32.7 ) Goodwill impairment — — — — — Operating income (loss) (23.2 ) 5.9 — — (17.3 ) Earnings from unconsolidated affiliates, net — — 6.2 — 6.2 Interest and debt expense, net (34.3 ) — — — (34.3 ) Gain on modification/extinguishment of debt 10.0 — — — 10.0 Equity in net income (loss) of subsidiary 11.9 — — (11.9 ) — Income (loss) before income taxes (35.6 ) 5.9 6.2 (11.9 ) (35.4 ) Provision for income taxes — 0.2 — — 0.2 Net income (loss) (35.6 ) 5.7 6.2 (11.9 ) (35.6 ) Net income attributable to non-controlling partners in subsidiaries — — 6.0 — 6.0 Net income (loss) attributable to Crestwood Midstream Partners LP $ (35.6 ) $ 5.7 $ 0.2 $ (11.9 ) $ (41.6 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 641.5 $ — $ — $ 641.5 Costs of product/services sold — 459.5 — — 459.5 Expenses: Operations and maintenance — 43.9 — — 43.9 General and administrative 16.4 10.9 — — 27.3 Depreciation, amortization and accretion 0.9 68.6 — — 69.5 17.3 123.4 — — 140.7 Other operating expense: Loss on long-lived assets, net — (0.7 ) — — (0.7 ) Goodwill Impairment — (68.6 ) — — (68.6 ) Operating loss (17.3 ) (10.7 ) — — (28.0 ) Earnings from unconsolidated affiliates, net — — 5.0 — 5.0 Interest and debt expense, net (32.6 ) — — — (32.6 ) Loss on modification/extinguishment of debt (17.1 ) — — — (17.1 ) Equity in net income (loss) of subsidiary (5.8 ) — — 5.8 — Income (loss) before income taxes (72.8 ) (10.7 ) 5.0 5.8 (72.7 ) Provision for income taxes — 0.1 — — 0.1 Net income (loss) (72.8 ) (10.8 ) 5.0 5.8 (72.8 ) Net income attributable to non-controlling partners in subsidiaries — — 5.7 — 5.7 Net income (loss) attributable to Crestwood Midstream Partners LP (72.8 ) (10.8 ) (0.7 ) 5.8 (78.5 ) Net income attributable to Class A preferred units 7.5 — — — 7.5 Net income (loss) attributable to partners $ (80.3 ) $ (10.8 ) $ (0.7 ) $ 5.8 $ (86.0 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Six Months Ended June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 1,137.9 $ — $ — $ 1,137.9 Costs of product/services sold — 813.4 — — 813.4 Expenses: Operations and maintenance — 83.1 — — 83.1 General and administrative 40.9 9.3 — — 50.2 Depreciation, amortization and accretion — 132.0 — — 132.0 40.9 224.4 — — 265.3 Other operating expense: Loss on long-lived assets, net — (32.7 ) — — (32.7 ) Goodwill impairment — (109.7 ) — — (109.7 ) Operating loss (40.9 ) (42.3 ) — — (83.2 ) Earnings from unconsolidated affiliates, net — — 12.7 — 12.7 Interest and debt expense, net (70.4 ) — — — (70.4 ) Gain on modification/extinguishment of debt 10.0 — — — 10.0 Equity in net income (loss) of subsidiary (29.6 ) — — 29.6 — Net income (loss) (130.9 ) (42.3 ) 12.7 29.6 (130.9 ) Net income attributable to non-controlling partners in subsidiaries — — 11.9 — 11.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ (130.9 ) $ (42.3 ) $ 0.8 $ 29.6 $ (142.8 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Six Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 1,373.0 $ — $ — $ 1,373.0 Costs of product/services sold — 989.2 — — 989.2 Expenses: Operations and maintenance — 94.5 — — 94.5 General and administrative 29.8 23.1 — — 52.9 Depreciation, amortization and accretion 1.1 137.2 — — 138.3 30.9 254.8 — — 285.7 Other operating expense: Loss on long-lived assets, net — (1.5 ) — — (1.5 ) Goodwill Impairment — (68.6 ) — — (68.6 ) Operating income (loss) (30.9 ) 58.9 — — 28.0 Earnings from unconsolidated affiliates, net — — 8.4 — 8.4 Interest and debt expense, net (62.5 ) — — — (62.5 ) Loss on modification/extinguishment of debt (17.1 ) — — — (17.1 ) Equity in net income (loss) of subsidiary 66.8 — — (66.8 ) — Income (loss) before income taxes (43.7 ) 58.9 8.4 (66.8 ) (43.2 ) Provision for income taxes — 0.5 — — 0.5 Net income (loss) (43.7 ) 58.4 8.4 (66.8 ) (43.7 ) Net income attributable to non-controlling partners in subsidiaries — — 11.3 — 11.3 Net income (loss) attributable to Crestwood Midstream Partners LP (43.7 ) 58.4 (2.9 ) (66.8 ) (55.0 ) Net income attributable to Class A preferred units 16.7 — — — 16.7 Net income (loss) attributable to partners $ (60.4 ) $ 58.4 $ (2.9 ) $ (66.8 ) $ (71.7 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (110.9 ) $ 296.5 $ 10.4 $ — $ 196.0 Cash flows from investing activities: Purchases of property, plant and equipment (1.0 ) (75.2 ) — — (76.2 ) Investment in unconsolidated affiliates — — (5.5 ) — (5.5 ) Proceeds from the sale of assets — 942.0 — — 942.0 Capital distributions from unconsolidated affiliates — — 5.5 — 5.5 Capital distributions from consolidated affiliates 2.8 — — (2.8 ) — Net cash provided by (used in) investing activities 1.8 866.8 — (2.8 ) 865.8 Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,078.8 — — — 1,078.8 Principal payments on long-term debt (1,986.8 ) (0.7 ) — — (1,987.5 ) Payments on capital leases — (0.9 ) — — (0.9 ) Payments for debt-related deferred costs (3.3 ) — — — (3.3 ) Distributions paid (140.6 ) — (7.6 ) — (148.2 ) Distributions to parent — — (2.8 ) 2.8 — Taxes paid for unit-based compensation vesting — (0.6 ) — — (0.6 ) Change in intercompany balances 1,161.1 (1,161.1 ) — — — Net cash provided by (used in) financing activities 109.2 (1,163.3 ) (10.4 ) 2.8 (1,061.7 ) Net change in cash 0.1 — — — 0.1 Cash at beginning of period 0.1 — — — 0.1 Cash at end of period $ 0.2 $ — $ — $ — $ 0.2 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (89.1 ) $ 286.6 $ 6.0 $ — $ 203.5 Cash flows from investing activities: Purchases of property, plant and equipment (0.4 ) (83.1 ) — — (83.5 ) Investment in unconsolidated affiliates — — (27.8 ) — (27.8 ) Capital distributions from unconsolidated affiliates — — 1.0 — 1.0 Proceeds from the sale of assets — 2.1 — — 2.1 Capital contributions to consolidated affiliates (24.6 ) — — 24.6 — Net cash provided by (used in) investing activities (25.0 ) (81.0 ) (26.8 ) 24.6 (108.2 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,865.1 — — — 1,865.1 Principal payments on long-term debt (1,713.2 ) — — — (1,713.2 ) Payments on capital leases (0.9 ) (0.3 ) — — (1.2 ) Payments for debt-related deferred costs (11.7 ) — — — (11.7 ) Financing fees paid for early debt redemption (13.6 ) — — — (13.6 ) Distributions paid (221.4 ) — (3.8 ) — (225.2 ) Contributions from parent — — 24.6 (24.6 ) — Taxes paid for unit-based compensation vesting — (2.1 ) — — (2.1 ) Change in intercompany balances 210.0 (210.0 ) — — — Other (0.2 ) — — — (0.2 ) Net cash provided by (used in) financing activities 114.1 (212.4 ) 20.8 (24.6 ) (102.1 ) Net change in cash — (6.8 ) — — (6.8 ) Cash at beginning of period — 7.6 — — 7.6 Cash at end of period $ — $ 0.8 $ — $ — $ 0.8

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 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 June 30, 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 method by which we will adopt the standard and 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 Sum22

Basis of Presentation and Summary of Significant Accounting Policies Goodwill (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill at Goodwill Impairments during the Six Months Ended Deconsolidation of NE S&T Assets at Goodwill at December 31, 2015 June 30, 2016 June 30, 2016 June 30, 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 $ 726.3 $ 249.5

Certain Balance Sheet Informa23

Certain Balance Sheet Information (Tables)	6 Months Ended
	Jun. 30, 2016
Balance Sheet Related Disclosures [Abstract]
Schedule of Accrued Liabilities	Accrued expenses and other liabilities consisted of the following at June 30, 2016 and December 31, 2015 ( in millions ): CEQP CMLP June 30, December 31, June 30, December 31, 2016 2015 2016 2015 Accrued expenses $ 35.5 $ 46.4 $ 33.8 $ 44.1 Accrued property taxes 12.3 4.8 7.3 4.8 Accrued product purchases payable 2.8 1.5 2.8 1.5 Tax payable 0.6 0.5 0.6 0.5 Interest payable 23.2 26.2 23.2 26.2 Accrued additions to property, plant and equipment 2.9 10.4 2.9 10.4 Capital leases 1.3 1.6 1.3 1.6 Deferred revenue 22.6 14.2 22.6 14.2 Total accrued expenses and other liabilities $ 101.2 $ 105.6 $ 94.5 $ 103.3

Investments in Unconsolidated24

Investments in Unconsolidated Affiliates (Tables)	6 Months Ended
	Jun. 30, 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 (Loss) from Unconsolidated Affiliates June 30, June 30, December 31, Three Months Ended June 30, Six Months Ended June 30, 2016 2016 2015 2016 2015 2016 2015 Stagecoach Gas Services LLC (1) 50.00 % $ 846.3 $ — $ 2.3 $ — $ 2.3 $ — Jackalope Gas Gathering Services, L.L.C. (2) 50.00 % (3) 201.3 202.4 5.9 1.1 11.0 3.6 Tres Palacios Holdings LLC (4) 50.01 % 36.7 36.8 (2.3 ) 0.6 (1.5 ) 1.5 Powder River Basin Industrial Complex, LLC (5) 50.01 % 14.8 15.1 0.3 3.3 0.9 3.3 Total $ 1,099.1 $ 254.3 $ 6.2 $ 5.0 $ 12.7 $ 8.4 (1) As of June 30, 2016 , our equity in the underlying net assets of Stagecoach Gas exceeded our investment balance by approximately $50.8 million . Our Stagecoach Gas investment is included in our storage and transportation segment. (2) As of June 30, 2016 , our equity in the underlying net assets of Jackalope Gas Gathering Services, L.L.C. (Jackalope) exceeded our investment balance by approximately $0.8 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 for both the three and six months ended June 30, 2016 and $0.7 million and $1.5 million for the three and six months ended June 30, 2015 . Our Jackalope investment is included in our gathering and processing segment. (3) 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. (4) As of June 30, 2016 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $28.5 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 for the three months ended June 30, 2016 and 2015 , and $0.6 million for the six months ended June 30, 2016 and 2015 . Our Tres Holdings investment is included in our storage and transportation segment. (5) As of June 30, 2016 , our equity in the underlying net assets of PRBIC exceeded our investment balance by approximately $22.6 million . We amortize a portion of 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. Approximately $10.6 million of this excess amount relates to goodwill and, as such, is not subject to amortization. We recorded amortization of approximately $0.4 million and $0.8 million for the three and six months ended June 30, 2016 . During the three and six months ended June 30, 2015, we recorded additional equity earnings of approximately $3.2 million related to a gain associated with the adjustment of our member's capital account by our equity investee. Our PRBIC investment is included in our storage and transportation segment.

Risk Management (Tables)

Risk Management (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2016 and December 31, 2015 ( in millions ): June 30, 2016 December 31, 2015 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, crude and heating oil ( barrels ) 12.4 13.8 9.1 10.9

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 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 ): June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Crestwood Midstream 2020 Senior Notes $ 340.8 $ 319.9 $ 503.3 $ 382.3 Crestwood Midstream 2022 Senior Notes $ 436.4 $ 400.8 $ 600.0 $ 437.4 Crestwood Midstream 2023 Senior Notes $ 700.0 $ 645.8 $ 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 June 30, 2016 and December 31, 2015 ( in millions ): June 30, 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 $ 0.2 $ 44.0 $ — $ 44.2 $ (28.9 ) $ (5.8 ) $ 9.5 Suburban Propane Partners, L.P. units (2) 4.7 — — 4.7 — — 4.7 Total assets at fair value $ 4.9 $ 44.0 $ — $ 48.9 $ (28.9 ) $ (5.8 ) $ 14.2 Liabilities Liabilities from price risk management $ 0.2 $ 37.5 $ — $ 37.7 $ (28.9 ) $ 2.1 $ 10.9 Total liabilities at fair value $ 0.2 $ 37.5 $ — $ 37.7 $ (28.9 ) $ 2.1 $ 10.9 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)	6 Months Ended
	Jun. 30, 2016
Text Block [Abstract]
Components Of Long-Term Debt	Long-term debt consisted of the following at June 30, 2016 and December 31, 2015 ( in millions ): June 30, December 31, Credit Facility $ 139.0 $ 735.0 2020 Senior Notes 338.8 500.0 Fair value adjustment of 2020 Senior Notes 2.0 3.3 2022 Senior Notes 436.4 600.0 2023 Senior Notes 700.0 700.0 Other 3.9 5.3 Less: deferred financing costs, net 37.6 40.9 Total Crestwood Midstream debt 1,582.5 2,502.7 Other — 0.2 Total Crestwood Equity debt 1,582.5 2,502.9 Less: current portion 0.9 1.1 Total long-term debt, less current portion $ 1,581.6 $ 2,501.8

Partners' Capital (Tables)

Partners' Capital (Tables)	6 Months Ended
	Jun. 30, 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 six months ended June 30, 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 May 6, 2016 May 13, 2016 0.60 41.4 $ 137.0 2015 February 6, 2015 February 13, 2015 $ 1.375 $ 25.8 May 8, 2015 May 15, 2015 1.375 25.7 $ 51.5
Components of Net Income (Loss) Attributable to Non-Controlling Partners	The components of net income (loss) attributable to non-controlling partners for the three and six months ended June 30, 2016 and 2015 , are as follows (in millions) : Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Crestwood Niobrara preferred interests $ 6.0 $ 5.7 $ 11.9 $ 11.3 CMLP net income attributable to non-controlling partners 6.0 5.7 11.9 11.3 Crestwood Midstream limited partner interests — (269.2 ) — (274.2 ) Crestwood Midstream Class A preferred units — 7.5 — 16.7 CEQP net income (loss) attributable to non-controlling partners $ 6.0 $ (256.0 ) $ 11.9 $ (246.2 )
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 six months ended June 30, 2015 . Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) February 6, 2015 February 13, 2015 $ 0.41 $ 74.3 May 8, 2015 May 15, 2015 0.41 74.3 $ 148.6

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2016 and 2015 ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Gathering and processing revenues at CEQP and CMLP $ 0.7 $ 1.1 $ 1.4 $ 2.1 Gathering and processing costs of product/services sold at CEQP and CMLP (1) $ 4.4 $ 7.7 $ 8.7 $ 16.0 Operations and maintenance expenses charged by CEQP and CMLP $ 1.0 $ 0.7 $ 1.7 $ 1.6 General and administrative expenses charged by CEQP to CMLP, net (2) $ 3.2 $ 14.4 $ 6.9 $ 31.8 General and administrative expenses charged by (from) CEQP to Crestwood Holdings, net (3) $ (0.2 ) $ 0.1 $ (0.1 ) $ 0.2 (1) Represents natural gas purchases from Sabine Oil and Gas Corporation. (2) Includes $3.9 million and $8.4 million of net unit-based compensation charges allocated from CEQP to CMLP for the three and six months ended June 30, 2016 and $2.2 million and $4.4 million for the three and six months ended June 30, 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 and six months ended June 30, 2016 , CMLP allocated $0.7 million and $1.5 million of general and administrative costs to CEQP. (3) Includes $0.9 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three and six months ended 2016 .
Schedule of Related Party Receivables and Payables	The following table shows accounts receivable and accounts payable from our affiliates as of June 30, 2016 and December 31, 2015 ( in millions ): CEQP CMLP June 30, 2016 December 31, 2015 June 30, 2016 December 31, 2015 Accounts receivable $ 2.1 $ 1.7 $ 2.1 $ 1.7 Accounts payable $ 6.3 $ 4.0 $ 3.8 $ 1.5

Segments (Tables)

Segments (Tables)	6 Months Ended
	Jun. 30, 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 loss to EBITDA ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Net loss $ (37.1 ) $ (296.0 ) $ (130.8 ) $ (277.9 ) Add: Interest and debt expense, net 34.3 35.4 70.4 69.0 (Gain) loss on modification/extinguishment of debt (10.0 ) 17.1 (10.0 ) 17.1 Provision (benefit) for income taxes — (0.3 ) — 0.1 Depreciation, amortization and accretion 64.4 74.8 126.7 149.0 EBITDA $ 51.6 $ (169.0 ) $ 56.3 $ (42.7 )
Summary Of Segment Information	Three Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 269.5 $ 53.8 $ 278.6 $ — $ 601.9 Intersegment revenues 30.6 1.1 (31.7 ) — — Costs of product/services sold 226.3 1.9 221.8 — 450.0 Operations and maintenance expense 20.9 8.5 15.6 — 45.0 General and administrative expense — — — 28.9 28.9 Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 5.9 0.3 — — 6.2 Other income, net — — — 0.1 0.1 EBITDA $ 58.8 $ 12.1 $ 9.5 $ (28.8 ) $ 51.6 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,394.1 $ 1,191.2 $ 974.8 $ 33.3 $ 4,593.4 Purchases of property, plant and equipment $ 4.2 $ 11.6 $ 4.7 $ 0.1 $ 20.6 Three Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 346.8 $ 68.5 $ 226.2 $ — $ 641.5 Intersegment revenues 33.8 — (33.8 ) — — Costs of product/services sold 293.1 5.3 161.1 — 459.5 Operations and maintenance expense 22.3 5.9 15.7 — 43.9 General and administrative expense — — — 30.6 30.6 Loss on long-lived assets (0.6 ) — — — (0.6 ) Goodwill impairment (220.7 ) — (60.3 ) — (281.0 ) Earnings from unconsolidated affiliates, net 1.1 3.9 — — 5.0 Other income, net — — — 0.1 0.1 EBITDA $ (155.0 ) $ 61.2 $ (44.7 ) $ (30.5 ) $ (169.0 ) Purchases of property, plant and equipment $ 28.4 $ 3.9 $ 3.6 $ 0.2 $ 36.1 Six Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 508.4 $ 113.2 $ 516.3 $ — $ 1,137.9 Intersegment revenues 51.1 1.5 (52.6 ) — — Costs of product/services sold 406.1 4.8 402.5 — 813.4 Operations and maintenance expense 38.7 15.7 32.4 — 86.8 General and administrative expense — — — 51.9 51.9 Loss on long-lived assets — (32.7 ) — — (32.7 ) Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Earnings from unconsolidated affiliates, net 11.0 1.7 — — 12.7 Other income, net — — — 0.2 0.2 EBITDA $ 117.1 $ 49.5 $ (58.6 ) $ (51.7 ) $ 56.3 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,394.1 $ 1,191.2 $ 974.8 $ 33.3 $ 4,593.4 Purchases of property, plant and equipment $ 48.5 $ 14.9 $ 11.8 $ 1.0 $ 76.2 Six Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 697.1 $ 136.1 $ 539.8 $ — $ 1,373.0 Intersegment revenues 43.9 — (43.9 ) — — Costs of product/services sold 559.8 10.6 418.8 — 989.2 Operations and maintenance expense 46.4 12.3 35.8 — 94.5 General and administrative expense — — — 58.1 58.1 Goodwill impairment (220.7 ) — (60.3 ) — (281.0 ) Loss on long-lived assets (0.9 ) (0.7 ) — — (1.6 ) Earnings from unconsolidated affiliates, net 3.6 4.8 — — 8.4 Other income, net — — — 0.3 0.3 EBITDA $ (83.2 ) $ 117.3 $ (19.0 ) $ (57.8 ) $ (42.7 ) Purchases of property, plant and equipment $ 64.6 $ 8.0 $ 10.5 $ 0.4 $ 83.5
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 loss to EBITDA ( in millions ): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 Net loss $ (35.6 ) $ (72.8 ) $ (130.9 ) $ (43.7 ) Add: Interest and debt expense, net 34.3 32.6 70.4 62.5 (Gain) loss on modification/extinguishment of debt (10.0 ) 17.1 (10.0 ) 17.1 Provision for income taxes 0.2 0.1 — 0.5 Depreciation, amortization and accretion 67.1 69.5 132.0 138.3 EBITDA $ 56.0 $ 46.5 $ 61.5 $ 174.7
Summary Of Segment Information	Three Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 269.5 $ 53.8 $ 278.6 $ — $ 601.9 Intersegment revenues 30.6 1.1 (31.7 ) — — Costs of product/services sold 226.3 1.9 221.8 — 450.0 Operations and maintenance expense 20.9 4.9 15.6 — 41.4 General and administrative expense — — — 28.0 28.0 Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 5.9 0.3 — — 6.2 EBITDA $ 58.8 $ 15.7 $ 9.5 $ (28.0 ) $ 56.0 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,603.3 $ 1,188.9 $ 974.8 $ 18.9 $ 4,785.9 Purchases of property, plant and equipment $ 4.2 $ 11.6 $ 4.7 $ 0.1 $ 20.6 Three Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 346.8 $ 68.5 $ 226.2 $ — $ 641.5 Intersegment revenues 33.8 — (33.8 ) — — Costs of product/services sold 293.1 5.3 161.1 — 459.5 Operations and maintenance expense 22.3 5.9 15.7 — 43.9 General and administrative expense — — — 27.3 27.3 Goodwill impairment (8.3 ) — (60.3 ) — (68.6 ) Loss on long-lived assets (0.6 ) (0.1 ) — — (0.7 ) Earnings from unconsolidated affiliates, net 1.1 3.9 — — 5.0 EBITDA $ 57.4 $ 61.1 $ (44.7 ) $ (27.3 ) $ 46.5 Purchases of property, plant and equipment $ 28.4 $ 3.9 $ 3.6 $ 0.2 $ 36.1 Six Months Ended June 30, 2016 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 508.4 $ 113.2 $ 516.3 $ — $ 1,137.9 Intersegment revenues 51.1 1.5 (52.6 ) — — Costs of product/services sold 406.1 4.8 402.5 — 813.4 Operations and maintenance expense 38.7 12.0 32.4 — 83.1 General and administrative expense — — — 50.2 50.2 Goodwill impairment (8.6 ) (13.7 ) (87.4 ) — (109.7 ) Loss on long-lived assets — (32.7 ) — — (32.7 ) Earnings from unconsolidated affiliates, net 11.0 1.7 — — 12.7 EBITDA $ 117.1 $ 53.2 $ (58.6 ) $ (50.2 ) $ 61.5 Goodwill $ 45.9 $ 31.2 $ 172.4 $ — $ 249.5 Total assets $ 2,603.3 $ 1,188.9 $ 974.8 $ 18.9 $ 4,785.9 Purchases of property, plant and equipment $ 48.5 $ 14.9 $ 11.8 $ 1.0 $ 76.2 Six Months Ended June 30, 2015 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 697.1 $ 136.1 $ 539.8 $ — $ 1,373.0 Intersegment revenues 43.9 — (43.9 ) — — Costs of product/services sold 559.8 10.6 418.8 — 989.2 Operations and maintenance expense 46.4 12.3 35.8 — 94.5 General and administrative expense — — — 52.9 52.9 Goodwill impairment (8.3 ) — (60.3 ) — (68.6 ) Loss on long-lived assets (0.9 ) (0.6 ) — — (1.5 ) Earnings from unconsolidated affiliates, net 3.6 4.8 — — 8.4 EBITDA $ 129.2 $ 117.4 $ (19.0 ) $ (52.9 ) $ 174.7 Purchases of property, plant and equipment $ 64.6 $ 8.0 $ 10.5 $ 0.4 $ 83.5

Condensed Consolidating Finan31

Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet	Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.2 $ — $ — $ — $ 0.2 Accounts receivable — 242.4 1.9 — 244.3 Inventory — 43.5 — — 43.5 Assets held for sale — 55.0 — — 55.0 Other current assets — 19.8 — — 19.8 Total current assets 0.2 360.7 1.9 — 362.8 Property, plant and equipment, net — 2,355.9 — — 2,355.9 Goodwill and intangible assets, net — 965.2 — — 965.2 Investment in consolidated affiliates 4,310.1 — — (4,310.1 ) — Investment in unconsolidated affiliates — — 1,099.1 — 1,099.1 Other assets — 2.9 — — 2.9 Total assets $ 4,310.3 $ 3,684.7 $ 1,101.0 $ (4,310.1 ) $ 4,785.9 Liabilities and partners' capital Current liabilities: Accounts payable $ — $ 161.8 $ — $ — $ 161.8 Other current liabilities 23.4 82.9 — — 106.3 Total current liabilities 23.4 244.7 — — 268.1 Long-term liabilities: Long-term debt, less current portion 1,580.1 1.5 — — 1,581.6 Other long-term liabilities — 40.9 — — 40.9 Deferred income taxes — 0.7 — — 0.7 Partners' capital 2,706.8 3,396.9 913.2 (4,310.1 ) 2,706.8 Interest of non-controlling partners in subsidiaries — — 187.8 — 187.8 Total partners' capital 2,706.8 3,396.9 1,101.0 (4,310.1 ) 2,894.6 Total liabilities and partners' capital $ 4,310.3 $ 3,684.7 $ 1,101.0 $ (4,310.1 ) $ 4,785.9 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 Six Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 1,373.0 $ — $ — $ 1,373.0 Costs of product/services sold — 989.2 — — 989.2 Expenses: Operations and maintenance — 94.5 — — 94.5 General and administrative 29.8 23.1 — — 52.9 Depreciation, amortization and accretion 1.1 137.2 — — 138.3 30.9 254.8 — — 285.7 Other operating expense: Loss on long-lived assets, net — (1.5 ) — — (1.5 ) Goodwill Impairment — (68.6 ) — — (68.6 ) Operating income (loss) (30.9 ) 58.9 — — 28.0 Earnings from unconsolidated affiliates, net — — 8.4 — 8.4 Interest and debt expense, net (62.5 ) — — — (62.5 ) Loss on modification/extinguishment of debt (17.1 ) — — — (17.1 ) Equity in net income (loss) of subsidiary 66.8 — — (66.8 ) — Income (loss) before income taxes (43.7 ) 58.9 8.4 (66.8 ) (43.2 ) Provision for income taxes — 0.5 — — 0.5 Net income (loss) (43.7 ) 58.4 8.4 (66.8 ) (43.7 ) Net income attributable to non-controlling partners in subsidiaries — — 11.3 — 11.3 Net income (loss) attributable to Crestwood Midstream Partners LP (43.7 ) 58.4 (2.9 ) (66.8 ) (55.0 ) Net income attributable to Class A preferred units 16.7 — — — 16.7 Net income (loss) attributable to partners $ (60.4 ) $ 58.4 $ (2.9 ) $ (66.8 ) $ (71.7 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 601.9 $ — $ — $ 601.9 Costs of product/services sold — 450.0 — — 450.0 Expenses: Operations and maintenance — 41.4 — — 41.4 General and administrative 23.2 4.8 — — 28.0 Depreciation, amortization and accretion — 67.1 — — 67.1 23.2 113.3 — — 136.5 Other operating expense: Loss on long-lived assets, net — (32.7 ) — — (32.7 ) Goodwill impairment — — — — — Operating income (loss) (23.2 ) 5.9 — — (17.3 ) Earnings from unconsolidated affiliates, net — — 6.2 — 6.2 Interest and debt expense, net (34.3 ) — — — (34.3 ) Gain on modification/extinguishment of debt 10.0 — — — 10.0 Equity in net income (loss) of subsidiary 11.9 — — (11.9 ) — Income (loss) before income taxes (35.6 ) 5.9 6.2 (11.9 ) (35.4 ) Provision for income taxes — 0.2 — — 0.2 Net income (loss) (35.6 ) 5.7 6.2 (11.9 ) (35.6 ) Net income attributable to non-controlling partners in subsidiaries — — 6.0 — 6.0 Net income (loss) attributable to Crestwood Midstream Partners LP $ (35.6 ) $ 5.7 $ 0.2 $ (11.9 ) $ (41.6 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 641.5 $ — $ — $ 641.5 Costs of product/services sold — 459.5 — — 459.5 Expenses: Operations and maintenance — 43.9 — — 43.9 General and administrative 16.4 10.9 — — 27.3 Depreciation, amortization and accretion 0.9 68.6 — — 69.5 17.3 123.4 — — 140.7 Other operating expense: Loss on long-lived assets, net — (0.7 ) — — (0.7 ) Goodwill Impairment — (68.6 ) — — (68.6 ) Operating loss (17.3 ) (10.7 ) — — (28.0 ) Earnings from unconsolidated affiliates, net — — 5.0 — 5.0 Interest and debt expense, net (32.6 ) — — — (32.6 ) Loss on modification/extinguishment of debt (17.1 ) — — — (17.1 ) Equity in net income (loss) of subsidiary (5.8 ) — — 5.8 — Income (loss) before income taxes (72.8 ) (10.7 ) 5.0 5.8 (72.7 ) Provision for income taxes — 0.1 — — 0.1 Net income (loss) (72.8 ) (10.8 ) 5.0 5.8 (72.8 ) Net income attributable to non-controlling partners in subsidiaries — — 5.7 — 5.7 Net income (loss) attributable to Crestwood Midstream Partners LP (72.8 ) (10.8 ) (0.7 ) 5.8 (78.5 ) Net income attributable to Class A preferred units 7.5 — — — 7.5 Net income (loss) attributable to partners $ (80.3 ) $ (10.8 ) $ (0.7 ) $ 5.8 $ (86.0 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Six Months Ended June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 1,137.9 $ — $ — $ 1,137.9 Costs of product/services sold — 813.4 — — 813.4 Expenses: Operations and maintenance — 83.1 — — 83.1 General and administrative 40.9 9.3 — — 50.2 Depreciation, amortization and accretion — 132.0 — — 132.0 40.9 224.4 — — 265.3 Other operating expense: Loss on long-lived assets, net — (32.7 ) — — (32.7 ) Goodwill impairment — (109.7 ) — — (109.7 ) Operating loss (40.9 ) (42.3 ) — — (83.2 ) Earnings from unconsolidated affiliates, net — — 12.7 — 12.7 Interest and debt expense, net (70.4 ) — — — (70.4 ) Gain on modification/extinguishment of debt 10.0 — — — 10.0 Equity in net income (loss) of subsidiary (29.6 ) — — 29.6 — Net income (loss) (130.9 ) (42.3 ) 12.7 29.6 (130.9 ) Net income attributable to non-controlling partners in subsidiaries — — 11.9 — 11.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ (130.9 ) $ (42.3 ) $ 0.8 $ 29.6 $ (142.8 )
Condensed Cash Flow Statement	Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2016 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (110.9 ) $ 296.5 $ 10.4 $ — $ 196.0 Cash flows from investing activities: Purchases of property, plant and equipment (1.0 ) (75.2 ) — — (76.2 ) Investment in unconsolidated affiliates — — (5.5 ) — (5.5 ) Proceeds from the sale of assets — 942.0 — — 942.0 Capital distributions from unconsolidated affiliates — — 5.5 — 5.5 Capital distributions from consolidated affiliates 2.8 — — (2.8 ) — Net cash provided by (used in) investing activities 1.8 866.8 — (2.8 ) 865.8 Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,078.8 — — — 1,078.8 Principal payments on long-term debt (1,986.8 ) (0.7 ) — — (1,987.5 ) Payments on capital leases — (0.9 ) — — (0.9 ) Payments for debt-related deferred costs (3.3 ) — — — (3.3 ) Distributions paid (140.6 ) — (7.6 ) — (148.2 ) Distributions to parent — — (2.8 ) 2.8 — Taxes paid for unit-based compensation vesting — (0.6 ) — — (0.6 ) Change in intercompany balances 1,161.1 (1,161.1 ) — — — Net cash provided by (used in) financing activities 109.2 (1,163.3 ) (10.4 ) 2.8 (1,061.7 ) Net change in cash 0.1 — — — 0.1 Cash at beginning of period 0.1 — — — 0.1 Cash at end of period $ 0.2 $ — $ — $ — $ 0.2 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Six Months Ended June 30, 2015 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (89.1 ) $ 286.6 $ 6.0 $ — $ 203.5 Cash flows from investing activities: Purchases of property, plant and equipment (0.4 ) (83.1 ) — — (83.5 ) Investment in unconsolidated affiliates — — (27.8 ) — (27.8 ) Capital distributions from unconsolidated affiliates — — 1.0 — 1.0 Proceeds from the sale of assets — 2.1 — — 2.1 Capital contributions to consolidated affiliates (24.6 ) — — 24.6 — Net cash provided by (used in) investing activities (25.0 ) (81.0 ) (26.8 ) 24.6 (108.2 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,865.1 — — — 1,865.1 Principal payments on long-term debt (1,713.2 ) — — — (1,713.2 ) Payments on capital leases (0.9 ) (0.3 ) — — (1.2 ) Payments for debt-related deferred costs (11.7 ) — — — (11.7 ) Financing fees paid for early debt redemption (13.6 ) — — — (13.6 ) Distributions paid (221.4 ) — (3.8 ) — (225.2 ) Contributions from parent — — 24.6 (24.6 ) — Taxes paid for unit-based compensation vesting — (2.1 ) — — (2.1 ) Change in intercompany balances 210.0 (210.0 ) — — — Other (0.2 ) — — — (0.2 ) Net cash provided by (used in) financing activities 114.1 (212.4 ) 20.8 (24.6 ) (102.1 ) Net change in cash — (6.8 ) — — (6.8 ) Cash at beginning of period — 7.6 — — 7.6 Cash at end of period $ — $ 0.8 $ — $ — $ 0.8

Organization and Business Des32

Organization and Business Description (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2016segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Operating Segments	3

Basis of Presentation and Sum33

Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Miles of Pipeline		37.5		37.5
Net proceeds from sale of assets	$ 945			$ 942	$ 2.1
Property Plant and Equipment Disposition				1,094.6
Increase (Decrease) in Intangible Assets, Current				8.5
Increase (Decrease) in Other Current Assets and Liabilities, Net				$ 10.9
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		30.00%		30.00%		0.00%
Deferred Finance Costs, Net		$ 37.6		$ 37.6		$ 40.9
Goodwill [Roll Forward]
Goodwill at				1,085.5
Goodwill impairment		0	$ 281	109.7	$ 281
Goodwill at		249.5		249.5		1,085.5
Goodwill, Written off Related to Sale of Business Unit				726.3
Fayetteville
Goodwill [Roll Forward]
Goodwill impairment			8.3
Marcellus
Goodwill [Roll Forward]
Goodwill at				8.6
Goodwill impairment		8.6
Goodwill at		0		0		8.6
Arrow
Goodwill [Roll Forward]
Goodwill at				45.9
Goodwill impairment		0
Goodwill at		45.9		45.9		45.9
Northeast Storage and Transportation
Goodwill [Roll Forward]
Goodwill at				726.3
Goodwill impairment		0
Goodwill at		0		0		726.3
Goodwill, Written off Related to Sale of Business Unit				726.3
COLT
Goodwill [Roll Forward]
Goodwill at				44.9
Goodwill impairment		13.7
Goodwill at		31.2		31.2		44.9
Supply and Logistics
Goodwill [Roll Forward]
Goodwill at				167.2
Goodwill impairment		65.5
Goodwill at		101.7		101.7		167.2
Storage and Terminals
Goodwill [Roll Forward]
Goodwill at				50.5
Goodwill impairment		14.1
Goodwill at		36.4		36.4		50.5
US Salt
Goodwill [Roll Forward]
Goodwill at				12.6
Goodwill impairment		0
Goodwill at		12.6		12.6		12.6
Trucking
Goodwill [Roll Forward]
Goodwill at				29.5
Goodwill impairment		7.8
Goodwill at		$ 21.7		$ 21.7		$ 29.5
West Coast
Goodwill [Roll Forward]
Goodwill impairment			28.4
Watkins Glen
Goodwill [Roll Forward]
Goodwill impairment			31.9
Barnett
Goodwill [Roll Forward]
Goodwill impairment			$ 212.4
Minimum
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate				10.00%
Minimum | Watkins Glen
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					10.50%
Minimum | Fayetteville and West Coast
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					9.00%
Minimum | Barnett
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					9.00%
Maximum
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate				19.00%
Maximum | Watkins Glen
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					13.30%
Maximum | Fayetteville and West Coast
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					10.00%
Maximum | Barnett
Summary Of Significant Accounting Policies [Line Items]
Fair Value Inputs, Discount Rate					11.00%
CEGP
Summary Of Significant Accounting Policies [Line Items]
Net proceeds from sale of assets				$ 30
Ownership Percentage	50.00%	50.00%		50.00%

Certain Balance Sheet Informa34

Certain Balance Sheet Information (Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Apr. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accrued Expenses and Other Liabilities [Line Items]
Net proceeds from sale of assets	$ 945	$ 942	$ 2.1
Payments to acquire equity method investments		5.5	28
Accrued expenses		35.5		$ 46.4
Accrued property taxes		12.3		4.8
Accrued product purchases payable		2.8		1.5
Tax payable		0.6		0.5
Interest payable		23.2		26.2
Accrued additions to property, plant and equipment		2.9		10.4
Capital leases		1.3		1.6
Deferred revenue		22.6		14.2
Total accrued expenses and other liabilities		101.2		105.6
CEGP
Accrued Expenses and Other Liabilities [Line Items]
Net proceeds from sale of assets		30
Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Net proceeds from sale of assets		942	2.1
Payments to acquire equity method investments		5.5	$ 27.8
Accrued expenses		33.8		44.1
Accrued property taxes		7.3		4.8
Accrued product purchases payable		2.8		1.5
Tax payable		0.6		0.5
Interest payable		23.2		26.2
Accrued additions to property, plant and equipment		2.9		10.4
Capital leases		1.3		1.6
Deferred revenue		22.6		14.2
Total accrued expenses and other liabilities		$ 94.5		$ 103.3

Investments in Unconsolidated35

Investments in Unconsolidated Affiliates (Net Investments In and Earnings (Loss) from Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 03, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Net proceeds from sale of assets	$ 945			$ 942	$ 2.1
Investment		$ 1,099.1		1,099.1			$ 254.3
Earnings from unconsolidated affiliates, net		6.2	$ 5	12.7	8.4
Goodwill		$ 249.5		249.5			1,085.5
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Net proceeds from sale of assets				$ 3
Ownership Percentage		50.00%		50.00%
Investment		$ 846.3		$ 846.3		$ 844	0
Earnings from unconsolidated affiliates, net		2.3	0	2.3	0
Difference between carrying amount and underlying equity		$ 50.8		50.8
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments				$ 12.1	4.5
Ownership Percentage		50.00%		50.00%
Investment		$ 201.3		$ 201.3			202.4
Earnings from unconsolidated affiliates, net		5.9	1.1	11	3.6
Difference between carrying amount and underlying equity		$ 0.8		0.8
Amortization			0.7	0.1	1.5
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments				$ 4.1	2.1
Ownership Percentage		50.01%		50.01%
Investment		$ 36.7		$ 36.7			36.8
Earnings from unconsolidated affiliates, net		(2.3)	0.6	(1.5)	1.5
Difference between carrying amount and underlying equity		28.5		28.5
Amortization		$ 0.3		0.6	0.6
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments				$ 1.2	0.7
Ownership Percentage		50.01%		50.01%
Investment		$ 14.8		$ 14.8			$ 15.1
Earnings from unconsolidated affiliates, net		0.3	$ 3.3	0.9	3.3
Difference between carrying amount and underlying equity		22.6		22.6
Goodwill		10.6		10.6
Amortization		$ 0.4		$ 0.8
Income (loss) from Equity Method Investments, Capital Adjustment					$ 3.2

Investments in Unconsolidated36

Investments in Unconsolidated Affiliates Narrative (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 31, 2016	Apr. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 03, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Net proceeds from sale of assets		$ 945			$ 942	$ 2.1
Investment in unconsolidated affiliates (Note 4)			$ 1,099.1		1,099.1			$ 254.3
Payments to acquire equity method investments					5.5	28
Deconsolidation, Gain (Loss), Amount					$ 32.9
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Ownership Percentage			50.00%		50.00%
Investment in unconsolidated affiliates (Note 4)			$ 201.3		$ 201.3			202.4
Proceeds from equity method investments					12.1	4.5
Amortization				$ 0.7	$ 0.1	1.5
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage			50.01%		50.01%
Investment in unconsolidated affiliates (Note 4)			$ 36.7		$ 36.7			36.8
Proceeds from equity method investments					4.1	2.1
Payments to acquire equity method investments					5.5	5.7
Amortization			$ 0.3		$ 0.6	0.6
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage			50.01%		50.01%
Investment in unconsolidated affiliates (Note 4)			$ 14.8		$ 14.8			15.1
Proceeds from equity method investments					1.2	0.7
Payments to acquire equity method investments						4.2
Amortization			$ 0.4		$ 0.8
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage			50.00%		50.00%
Net proceeds from sale of assets					$ 3
Investment in unconsolidated affiliates (Note 4)			$ 846.3		846.3		$ 844	0
Crestwood Equity Partners LP
Schedule of Equity Method Investments [Line Items]
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments			4.4	0.7	7	3.8
Crestwood Niobrara LLC | Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments						17.9
Crestwood Midstream Partners LP
Schedule of Equity Method Investments [Line Items]
Net proceeds from sale of assets					942	2.1
Investment in unconsolidated affiliates (Note 4)			1,099.1		1,099.1			$ 254.3
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments			$ 4.4	$ 0.7	7	3.8
Payments to acquire equity method investments					$ 5.5	$ 27.8
Subsequent Event | Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 2.1
Subsequent Event | Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	0.4
Subsequent Event | Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 3.7

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	Jun. 30, 2016	Dec. 31, 2015
Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount	12.4	9.1
Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount	13.8	10.9

Risk Management (Narrative) (De

Risk Management (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Derivative [Line Items]
Collateral posted for commodity derivative instruments	$ 5		$ 5		$ 16.8
Price Risk Contracts | Maximum
Derivative [Line Items]
Remaining maturity			34 months
Percent of contracts expiring in the next twelve months			82.00%
Commodity contract
Derivative [Line Items]
Gain (loss) on derivative instruments not designated as hedging	1.3	$ 2.9	$ 2	$ 5.3
Collateral posted for commodity derivative instruments	0.1		0.1
Commodity contract with credit contingent features
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	5.5		5.5		3.3
NYMEX Derivative Liability
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	9.3		9.3		20.8
NYMEX Margin Deposit
Derivative [Line Items]
NYMEX margin deposits	$ 6.1		$ 6.1		$ 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	Jun. 30, 2016	Dec. 31, 2015
Senior Notes, 2020
Debt Instrument [Line Items]
Carrying amount	$ 340.8	$ 503.3
Fair value	319.9	382.3
Senior Notes, 2022
Debt Instrument [Line Items]
Carrying amount	436.4	600
Fair value	400.8	437.4
Senior Notes, 2023
Debt Instrument [Line Items]
Carrying amount	700	700
Fair value	$ 645.8	$ 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	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	$ 44.2	$ 58.3
SPH units	4.7	3.4
Assets, Fair Value Disclosure, Excluding Netting Adjustments	48.9	61.7
Netting agreements	(28.9)	(13.7)
Derivative Asset, Fair Value of Collateral	(5.8)	(12)
Assets from price risk management, total	9.5	32.6
Total assets at fair value	14.2	36
Liabilities from price risk management	37.7	41.5
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	37.7	41.5
Netting agreements	(28.9)	(13.7)
Derivative Liability, Fair Value of Collateral	2.1	(20.4)
Liabilities from price risk management, total	10.9	7.4
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	0.2	0.5
SPH units	4.7	3.4
Assets, Fair Value Disclosure, Excluding Netting Adjustments	4.9	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	44	57.8
SPH units	0	0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	44	57.8
Liabilities from price risk management	37.5	41.3
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	37.5	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	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Other	$ 0	$ 0.2
Deferred Finance Costs, Net	37.6	40.9
Total debt	1,582.5	2,502.9
Less: current portion	0.9	1.1
Total long-term debt, less current portion	1,581.6	2,501.8
Senior Notes | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes	338.8	500
Senior Notes | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes	436.4	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	2	3.3
Other
Debt Instrument [Line Items]
Other	3.9	5.3
Revolving Credit Facility | Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit agreement outstanding carrying value	139	735
Crestwood Midstream Partners LP
Debt Instrument [Line Items]
Total debt	1,582.5	2,502.7
Less: current portion	0.9	0.9
Total long-term debt, less current portion	1,581.6	2,501.8
Crestwood Midstream Partners LP | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes	340.8	503.3
Crestwood Midstream Partners LP | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes	436.4	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	May 13, 2016USD ($)	Feb. 12, 2016USD ($)	May 15, 2015USD ($)	Feb. 13, 2015USD ($)	Feb. 14, 2014USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid	$ 41.4	$ 95.6	$ 25.7	$ 25.8					$ 137	$ 51.5
Senior Secured Leverage Ratio						0.34	0.34		0.34
Repayments of Senior Debt						$ 312.9
Gains (Losses) on Extinguishment of Debt							$ 10	$ (17.1)	$ 10	(17.1)
Repayments of Long-term Debt									$ 1,987.7	2,030.6
Senior Secured Leverage Ratio, maximum						3.75	3.75		3.75
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Consolidated Leverage Ratio Maximum									5.50
Crestwood Midstream Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding						$ 62.1	$ 62.1		$ 62.1		$ 62.2
Debt Instrument, Unused Borrowing Capacity, Amount						613.9	613.9		613.9
Credit agreement outstanding carrying value						$ 139	$ 139		$ 139		$ 735
Total Funded Debt to Consolidated Ebitda									3.99
Consolidated Ebitda To Consolidated Interest Expense									3.82
Debt, Weighted Average Interest Rate						3.30%	3.30%		3.30%		2.70%
Interest Coverage Ratio Minimum									2.50
Crestwood Midstream Revolver | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate						3.21%	3.21%		3.21%		2.70%
Crestwood Midstream Revolver | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate						5.25%	5.25%		5.25%		5.00%
Senior Notes, 2020 | Senior Notes
Debt Instrument [Line Items]
Extinguishment of Debt, Amount						$ 161.2
Interest Paid						4.5
Senior notes						338.8	$ 338.8		$ 338.8		$ 500
Senior Notes, 2022 | Senior Notes
Debt Instrument [Line Items]
Extinguishment of Debt, Amount						163.6
Interest Paid						2.6
Senior notes						436.4	436.4		436.4		600
Senior Notes, 2023 | Senior Notes
Debt Instrument [Line Items]
Senior notes						$ 700	$ 700		$ 700		700
Debt Instrument, Interest Rate, Stated Percentage						6.25%	6.25%		6.25%
Crestwood Midstream Partners LP | Senior Notes, 2023 | Senior Notes
Debt Instrument [Line Items]
Long-term Debt						$ 700	$ 700		$ 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		$ 74.3					148.6
Gains (Losses) on Extinguishment of Debt							10	$ (17.1)	10	(17.1)
Repayments of Long-term Debt									1,987.5	$ 1,713.2
Crestwood Midstream Partners LP | Senior Notes, 2020
Debt Instrument [Line Items]
Senior notes						340.8	340.8		340.8		503.3
Crestwood Midstream Partners LP | Senior Notes, 2022
Debt Instrument [Line Items]
Senior notes						436.4	436.4		436.4		600
Crestwood Midstream Partners LP | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes						$ 700	$ 700		$ 700		$ 700

Earnings Per Limited Partner 43

Earnings Per Limited Partner Unit (Details) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	6,355,936	6,284,885
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	8,438,849	8,438,849
Subordinated Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	438,789	438,789

Partners' Capital (Schedule of

Partners' Capital (Schedule of Partners' Capital Account, Distriubtions) (Details) - USD ($) $ / shares in Units, $ in Millions

May 13, 2016

May 06, 2016

Feb. 12, 2016

Feb. 05, 2016

May 15, 2015

May 08, 2015

Feb. 13, 2015

Feb. 06, 2015

Feb. 14, 2014

Feb. 07, 2014

Jun. 30, 2016

Jun. 30, 2015

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Date of Record

May 6, 2016

Feb. 5, 2016

May 8, 2015

Feb. 6, 2015

Distribution Made to Limited Partner, Distribution Date

May 13, 2016

Feb. 12, 2016

May 15, 2015

Feb. 13, 2015

Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit

$ 0.60

$ 1.375

$ 1.375

$ 1.375

Distribution Made to Limited Partner, Cash Distributions Paid

$ 41.4

$ 95.6

$ 25.7

$ 25.8

$ 137

$ 51.5

Crestwood Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Date of Record

May 8, 2015

Feb. 6, 2015

Distribution Made to Limited Partner, Distribution Date

May 15, 2015

Feb. 13, 2015

Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit

$ 410

$ 0.41

Distribution Made to Limited Partner, Cash Distributions Paid

$ 74.3

$ 74.3

$ 148.6

Partners' Capital (Components o

Partners' Capital (Components of Net Income (Loss) Attributable to Non-Controlling Interests) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	$ 6	$ (256)	$ 11.9	$ (246.2)
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	6	5.7	11.9	11.3
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	6	5.7	11.9	11.3
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	7.5	0	16.7
Limited Partner [Member] | Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Net income attributable to non-controlling partners in subsidiaries	$ 0	$ (269.2)	$ 0	$ (274.2)

Partners' Capital (Narrative) (

Partners' Capital (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions

Jul. 21, 2016

May 13, 2016

May 06, 2016

Feb. 12, 2016

Feb. 05, 2016

May 15, 2015

May 08, 2015

Feb. 13, 2015

Feb. 06, 2015

Feb. 14, 2014

Feb. 07, 2014

Jul. 31, 2016

Jun. 30, 2016

Jun. 30, 2015

Jun. 30, 2016

Jun. 30, 2015

Jun. 15, 2016

Dec. 31, 2015

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distribution Date

May 13, 2016

Feb. 12, 2016

May 15, 2015

Feb. 13, 2015

Distribution Made to Limited Partner, Date of Record

May 6, 2016

Feb. 5, 2016

May 8, 2015

Feb. 6, 2015

Incentive Distribution, Distribution

$ 137

$ 51.5

Limited Partners' Capital Account, Distribution Amount

20.9

Preferred Stock Dividends, Shares

2,841,114

Net Income (Loss) Attributable to Noncontrolling Interest

$ 6

$ (256)

$ 11.9

(246.2)

Dividends, Paid-in-kind

25.9

Common Units Available for Issuance

7,290,552

Payments of Ordinary Dividends, Noncontrolling Interest

7.6

152.4

Distribution Made to Limited Partner, Cash Distributions Paid

$ 41.4

$ 95.6

$ 25.7

$ 25.8

$ 137

51.5

Preferred Units, Issued

63,559,359

63,559,359

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

May 15, 2015

Feb. 13, 2015

Distribution Made to Limited Partner, Date of Record

May 8, 2015

Feb. 6, 2015

Incentive Distribution, Distribution

$ 148.2

$ 225.2

Preferred Stock Dividends, Shares

838,228

Net Income (Loss) Attributable to Noncontrolling Interest

$ 6

5.7

11.9

$ 11.3

Dividends, Paid-in-kind

21

Payments of Ordinary Dividends, Noncontrolling Interest

0

0

Distribution Made to Limited Partner, Cash Distributions Paid

$ 74.3

$ 74.3

148.6

Distribution Made to General Partner, Cash Distributions Paid

140.6

51.9

Crestwood Niobrara LLC

Distribution Made to Limited Partner [Line Items]

Net Income (Loss) Attributable to Noncontrolling Interest

$ 6

$ 5.7

11.9

11.3

Payments of Ordinary Dividends, Noncontrolling Interest

7.6

3.8

Non-Controlling Partners

Distribution Made to Limited Partner [Line Items]

Net Income (Loss) Attributable to Noncontrolling Interest

$ 11.9

Subsequent Event

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distribution Date

Aug. 12, 2016

Distribution Made to Limited Partner, Date of Record

Aug. 5, 2016

Preferred Stock Dividends, Shares

1,470,029

Dividends, Paid-in-kind

$ 13.4

Payments of Ordinary Dividends, Noncontrolling Interest

$ 3.8

Cash Distribution

Distribution Made to Limited Partner [Line Items]

Limited Partners' Capital Account, Distribution Amount

$ 148.6

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	6 Months Ended
	Jun. 30, 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, New Claims Filed, Number	39
Loss Contingency, Estimate of Possible Loss	$ 7
Payments for Other Taxes	8.6
Accrued property taxes	12.3	4.8
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	12.4	11.4
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	7.1
Accrued property taxes	7.3	$ 4.8
Tres Palacios
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Accrued property taxes	$ 3.5

Commitments and Contingencies E

Commitments and Contingencies Environmental Compliance (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016USD ($)	Dec. 31, 2014Release	Dec. 31, 2015USD ($)bbl	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	$ 2.6		$ 1.7
Site Contingency, Loss Exposure in Excess of Accrual, Low Estimate	2.6
Site Contingency, Loss Exposure in Excess of Accrual, High Estimate	$ 4.9

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	$ 0.7	$ 1.1	$ 1.4	$ 2.1
General and administrative expenses charged by (from) CEQP to Crestwood Holdings, net(3)	1	0.7	1.7	1.6
Affiliated Entity
Related Party Transaction [Line Items]
Related party receivables	2.1		2.1		$ 1.7
Gathering and processing revenues at CEQP and CMLP	0.7	1.1	1.4	2.1
Gathering and processing costs of product/services sold at CEQP and CMLP(1)	4.4	7.7	8.7	16
General and administrative expenses charged by CEQP to CMLP, net(2)	3.2	14.4	6.9	31.8
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable	6.3		6.3		4
Crestwood Equity Partners LP
Related Party Transaction [Line Items]
General and administrative expenses charged by (from) CEQP to Crestwood Holdings, net(3)	(0.2)	0.1	(0.1)	0.2
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Gathering and processing revenues at CEQP and CMLP	0.7	1.1	1.4	2.1
Crestwood Midstream Partners LP | Affiliated Entity
Related Party Transaction [Line Items]
Related party receivables	2.1		2.1		1.7
General and administrative expenses charged by CEQP to CMLP, net(2)	0.7		1.5
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable	3.8		3.8		$ 1.5
Crestwood LTIP | Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense	$ 3.9	$ 2.2	8.4	$ 4.4
Crestwood LTIP | Crestwood Holdings [Member]
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense			0.9
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
General and administrative expenses charged by (from) CEQP to Crestwood Holdings, net(3)			$ 0.3

Segments (Reconciliation of Net

Segments (Reconciliation of Net Income (Loss) to EBITDA) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)segment	Jun. 30, 2015USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of Operating Segments | segment			3
Net loss	$ (37.1)	$ (296)	$ (130.8)	$ (277.9)
Interest and debt expense, net	34.3	35.4	70.4	69
Gains (Losses) on Extinguishment of Debt	(10)	17.1	(10)	17.1
Provision (benefit) for income taxes	0	(0.3)	0	0.1
Depreciation, amortization and accretion	64.4	74.8	126.7	149
EBITDA	51.6	(169)	56.3	(42.7)
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net loss	(35.6)	(72.8)	(130.9)	(43.7)
Interest and debt expense, net	34.3	32.6	70.4	62.5
Gains (Losses) on Extinguishment of Debt	(10)	17.1	(10)	17.1
Provision (benefit) for income taxes	0.2	0.1	0	0.5
Depreciation, amortization and accretion	67.1	69.5	132	138.3
EBITDA	$ 56	$ 46.5	$ 61.5	$ 174.7

Segments (Summary Of Segment In

Segments (Summary Of Segment Information) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)segment	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Net loss	$ (37.1)	$ (296)	$ (130.8)	$ (277.9)
Interest and debt expense, net	34.3	35.4	70.4	69
Gains (Losses) on Extinguishment of Debt	(10)	17.1	$ (10)	17.1
Number of Operating Segments | segment			3
Provision (benefit) for income taxes	0	(0.3)	$ 0	0.1
Depreciation, amortization and accretion	64.4	74.8	126.7	149
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	601.9	641.5	1,137.9	1,373
Intersegment Revenues	0	0	0	0
Costs of product/services sold	450	459.5	813.4	989.2
Operations and maintenance	45	43.9	86.8	94.5
General and administrative	28.9	30.6	51.9	58.1
Goodwill impairment	0	(281)	(109.7)	(281)
Loss on long-lived assets, net	(32.7)	(0.6)	(32.7)	(1.6)
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Other income, net	0.1	0.1	0.2	0.3
EBITDA	51.6	(169)	56.3	(42.7)
Goodwill	249.5		249.5		$ 1,085.5
Total assets	4,593.4		4,593.4		5,762.8
Cash expenditures for property, plant and equipment	20.6	36.1	76.2	83.5
Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	269.5	346.8	508.4	697.1
Intersegment Revenues	30.6	33.8	51.1	43.9
Costs of product/services sold	226.3	293.1	406.1	559.8
Operations and maintenance	20.9	22.3	38.7	46.4
General and administrative	0	0	0	0
Goodwill impairment		(220.7)	(8.6)	(220.7)
Loss on long-lived assets, net	0	(0.6)	0	(0.9)
Earnings from unconsolidated affiliates, net	5.9	1.1	11	3.6
Other income, net	0	0	0	0
EBITDA	58.8	(155)	117.1	(83.2)
Goodwill	45.9		45.9
Total assets	2,394.1		2,394.1
Cash expenditures for property, plant and equipment	4.2	28.4	48.5	64.6
Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	53.8	68.5	113.2	136.1
Intersegment Revenues	1.1	0	1.5	0
Costs of product/services sold	1.9	5.3	4.8	10.6
Operations and maintenance	8.5	5.9	15.7	12.3
General and administrative	0	0	0	0
Goodwill impairment		0	(13.7)	0
Loss on long-lived assets, net	(32.7)	0	(32.7)	(0.7)
Earnings from unconsolidated affiliates, net	0.3	3.9	1.7	4.8
Other income, net	0	0	0	0
EBITDA	12.1	61.2	49.5	117.3
Goodwill	31.2		31.2
Total assets	1,191.2		1,191.2
Cash expenditures for property, plant and equipment	11.6	3.9	14.9	8
Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	278.6	226.2	516.3	539.8
Intersegment Revenues	(31.7)	(33.8)	(52.6)	(43.9)
Costs of product/services sold	221.8	161.1	402.5	418.8
Operations and maintenance	15.6	15.7	32.4	35.8
General and administrative	0	0	0	0
Goodwill impairment		(60.3)	(87.4)	(60.3)
Loss on long-lived assets, net	0	0	0	0
Earnings from unconsolidated affiliates, net	0	0	0	0
Other income, net	0	0	0	0
EBITDA	9.5	(44.7)	(58.6)	(19)
Goodwill	172.4		172.4
Total assets	974.8		974.8
Cash expenditures for property, plant and equipment	4.7	3.6	11.8	10.5
Corporate
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0	0	0	0
Intersegment Revenues	0	0	0	0
Costs of product/services sold	0	0	0	0
Operations and maintenance	0	0	0	0
General and administrative	28.9	30.6	51.9	58.1
Goodwill impairment		0	0	0
Loss on long-lived assets, net	0	0	0	0
Earnings from unconsolidated affiliates, net	0	0	0	0
Other income, net	0.1	0.1	0.2	0.3
EBITDA	(28.8)	(30.5)	(51.7)	(57.8)
Goodwill	0		0
Total assets	33.3		33.3
Cash expenditures for property, plant and equipment	0.1	0.2	1	0.4
Crestwood Midstream Partners LP
Net loss	(35.6)	(72.8)	(130.9)	(43.7)
Interest and debt expense, net	34.3	32.6	70.4	62.5
Gains (Losses) on Extinguishment of Debt	(10)	17.1	(10)	17.1
Provision (benefit) for income taxes	0.2	0.1	0	0.5
Depreciation, amortization and accretion	67.1	69.5	132	138.3
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	601.9	641.5	1,137.9	1,373
Intersegment Revenues	0	0	0	0
Costs of product/services sold	450	459.5	813.4	989.2
Operations and maintenance	41.4	43.9	83.1	94.5
General and administrative	28	27.3	50.2	52.9
Goodwill impairment	0	(68.6)	(109.7)	(68.6)
Loss on long-lived assets, net	(32.7)	(0.7)	(32.7)	(1.5)
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
EBITDA	56	46.5	61.5	174.7
Goodwill	249.5		249.5		1,085.5
Total assets	4,785.9		4,785.9		$ 5,963.6
Cash expenditures for property, plant and equipment	20.6	36.1	76.2	83.5
Crestwood Midstream Partners LP | Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	269.5	346.8	508.4	697.1
Intersegment Revenues	30.6	33.8	51.1	43.9
Costs of product/services sold	226.3	293.1	406.1	559.8
Operations and maintenance	20.9	22.3	38.7	46.4
General and administrative	0	0	0	0
Goodwill impairment		(8.3)	(8.6)	(8.3)
Loss on long-lived assets, net	0	(0.6)	0	(0.9)
Earnings from unconsolidated affiliates, net	5.9	1.1	11	3.6
EBITDA	58.8	57.4	117.1	129.2
Goodwill	45.9		45.9
Total assets	2,603.3		2,603.3
Cash expenditures for property, plant and equipment	4.2	28.4	48.5	64.6
Crestwood Midstream Partners LP | Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	53.8	68.5	113.2	136.1
Intersegment Revenues	1.1	0	1.5	0
Costs of product/services sold	1.9	5.3	4.8	10.6
Operations and maintenance	4.9	5.9	12	12.3
General and administrative	0	0	0	0
Goodwill impairment		0	(13.7)	0
Loss on long-lived assets, net	(32.7)	(0.1)	(32.7)	(0.6)
Earnings from unconsolidated affiliates, net	0.3	3.9	1.7	4.8
EBITDA	15.7	61.1	53.2	117.4
Goodwill	31.2		31.2
Total assets	1,188.9		1,188.9
Cash expenditures for property, plant and equipment	11.6	3.9	14.9	8
Crestwood Midstream Partners LP | Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	278.6	226.2	516.3	539.8
Intersegment Revenues	(31.7)	(33.8)	(52.6)	(43.9)
Costs of product/services sold	221.8	161.1	402.5	418.8
Operations and maintenance	15.6	15.7	32.4	35.8
General and administrative	0	0	0	0
Goodwill impairment		(60.3)	(87.4)	(60.3)
Loss on long-lived assets, net	0	0	0	0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	9.5	(44.7)	(58.6)	(19)
Goodwill	172.4		172.4
Total assets	974.8		974.8
Cash expenditures for property, plant and equipment	4.7	3.6	11.8	10.5
Crestwood Midstream Partners LP | Corporate
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	0	0	0	0
Intersegment Revenues	0	0	0	0
Costs of product/services sold	0	0	0	0
Operations and maintenance	0	0	0	0
General and administrative	28	27.3	50.2	52.9
Goodwill impairment		0	0	0
Loss on long-lived assets, net	0	0	0	0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	(28)	(27.3)	(50.2)	(52.9)
Goodwill	0		0
Total assets	18.9		18.9
Cash expenditures for property, plant and equipment	$ 0.1	$ 0.2	$ 1	$ 0.4

Segments (Narrative) (Details)

Segments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Crestwood Equity Partners LP
Segment Reporting Information [Line Items]
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments	$ 4.4	$ 0.7	$ 7	$ 3.8
Crestwood Midstream Partners LP
Segment Reporting Information [Line Items]
Interest, Taxes, Depreciation and Amortization included in Earnings from Equity Method Investments	$ 4.4	$ 0.7	$ 7	$ 3.8

Condensed Consolidating Finan53

Condensed Consolidating Financial Information (Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2012
Current assets:
Cash	$ 0.9	$ 0.5	$ 1.3		$ 8.8
Accounts receivable	247.5	236.5
Inventory	43.5	44.5
Assets Held-for-sale, Not Part of Disposal Group, Current	55	0
Total current assets	367.3	335.8
Property, plant and equipment, net	2,148	3,310.8
Investment	1,099.1	254.3
Other assets	7.7	7.2
Total assets	4,593.4	5,762.8
Current liabilities:
Accounts payable	164.5	144.1
Total current liabilities	277.5	258.2
Long-term liabilities:
Long-term debt, less current portion (Note 7)	1,581.6	2,501.8
Other long-term liabilities	45.1	47.5
Deferred income taxes	7.8	8.4
Total partners’ capital	2,681.4	2,946.9
Total liabilities and partners’ capital	4,593.4	5,762.8
Eliminations
Current assets:
Cash	0	0	0	$ 0
Accounts receivable	0	0
Inventory	0	0
Assets Held-for-sale, Not Part of Disposal Group, Current	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	(4,310.1)	(5,506.8)
Investment	0	0
Other assets	0	0
Total assets	(4,310.1)	(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	(4,310.1)	(5,506.8)
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	(4,310.1)	(5,506.8)
Total liabilities and partners’ capital	(4,310.1)	(5,506.8)
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Current assets:
Cash	0.2	0.1	0	0
Accounts receivable	0	0
Inventory	0	0
Assets Held-for-sale, Not Part of Disposal Group, Current	0
Other	0	0
Total current assets	0.2	0.1
Property, plant and equipment, net	0	0
Intangible Assets, Net (Including Goodwill)	0	0
Investment in consolidated affiliates	4,310.1	5,506.8
Investment	0	0
Other assets	0	0
Total assets	4,310.3	5,506.9
Current liabilities:
Accounts payable	0	0
Total current liabilities	23.4	26.4
Total current liabilities	23.4	26.4
Long-term liabilities:
Long-term debt, less current portion (Note 7)	1,580.1	2,498.9
Other long-term liabilities	0	0
Deferred income taxes	0	0
Partners' capital	2,706.8	2,981.6
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	2,706.8	2,981.6
Total liabilities and partners’ capital	4,310.3	5,506.9
Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash	0	0	0.8	7.6
Accounts receivable	242.4	236
Inventory	43.5	44.5
Assets Held-for-sale, Not Part of Disposal Group, Current	55
Other	19.8	52.5
Total current assets	360.7	333
Property, plant and equipment, net	2,355.9	3,525.7
Intangible Assets, Net (Including Goodwill)	965.2	1,846.9
Investment in consolidated affiliates	0	0
Investment	0	0
Other assets	2.9	3.1
Total assets	3,684.7	5,708.7
Current liabilities:
Accounts payable	161.8	141.3
Total current liabilities	82.9	85.2
Total current liabilities	244.7	226.5
Long-term liabilities:
Long-term debt, less current portion (Note 7)	1.5	2.9
Other long-term liabilities	40.9	43.3
Deferred income taxes	0.7	0.4
Partners' capital	3,396.9	5,435.6
Interest of non-controlling partners in subsidiary	0	0
Total partners’ capital	3,396.9	5,435.6
Total liabilities and partners’ capital	3,684.7	5,708.7
Non-Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash	0	0	0	0
Accounts receivable	1.9	0.5
Inventory	0	0
Assets Held-for-sale, Not Part of Disposal Group, Current	0
Other	0	0
Total current assets	1.9	0.5
Property, plant and equipment, net	0	0
Intangible Assets, Net (Including Goodwill)	0	0
Investment in consolidated affiliates	0	0
Investment	1,099.1	254.3
Other assets	0	0
Total assets	1,101	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	913.2	71.2
Interest of non-controlling partners in subsidiary	187.8	183.5
Total partners’ capital	1,101	254.7
Total liabilities and partners’ capital	1,101	254.8
Crestwood Midstream Partners LP
Current assets:
Cash	0.2	0.1	$ 0.8	$ 7.6	$ 7.6
Accounts receivable	244.3	236.5
Inventory	43.5	44.5
Assets Held-for-sale, Not Part of Disposal Group, Current	55	0
Other	19.8	52.5
Total current assets	362.8	333.6
Property, plant and equipment, net	2,355.9	3,525.7
Intangible Assets, Net (Including Goodwill)	965.2	1,846.9
Investment in consolidated affiliates	0	0
Investment	1,099.1	254.3
Other assets	2.9	3.1
Total assets	4,785.9	5,963.6
Current liabilities:
Accounts payable	161.8	141.4
Total current liabilities	106.3	111.6
Total current liabilities	268.1	253
Long-term liabilities:
Long-term debt, less current portion (Note 7)	1,581.6	2,501.8
Other long-term liabilities	40.9	43.3
Deferred income taxes	0.7	0.4
Partners' capital	2,706.8	2,981.6
Interest of non-controlling partners in subsidiary	187.8	183.5
Total partners’ capital	2,894.6	3,165.1
Total liabilities and partners’ capital	$ 4,785.9	$ 5,963.6

Condensed Consolidating Finan54

Condensed Consolidating Financial Information (Statements Of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues	$ 601.9	$ 641.5	$ 1,137.9	$ 1,373
Total costs of products/services sold	450	459.5	813.4	989.2
Expenses:
Operations and maintenance	45	43.9	86.8	94.5
General and administrative	28.9	30.6	51.9	58.1
Depreciation, amortization and accretion	64.4	74.8	126.7	149
Loss on long-lived assets, net	(32.7)	(0.6)	(32.7)	(1.6)
Goodwill impairment	0	(281)	(109.7)	(281)
Operating loss	(19.1)	(248.9)	(83.3)	(200.4)
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Interest and debt expense, net	(34.3)	(35.4)	(70.4)	(69)
Loss before income taxes	(37.1)	(296.3)	(130.8)	(277.8)
Provision (benefit) for income taxes	0	(0.3)	0	0.1
Net loss	(37.1)	(296)	(130.8)	(277.9)
Net income attributable to non-controlling partners in subsidiaries	6	(256)	11.9	(246.2)
Net income (loss) attributable to parent	(43.1)	(40)	(142.7)	(31.7)
Net income (loss) attributable to preferred unit holders	8.1	0	9.7	0
Net loss attributable to partners	(51.2)	(40)	(152.4)	(31.7)
Gains (Losses) on Extinguishment of Debt	10	(17.1)	10	(17.1)
Eliminations
Revenues	0	0	0	0
Total costs of products/services sold	0	0	0	0
Expenses:
Operations and maintenance	0	0	0	0
General and administrative	0	0	0	0
Depreciation, amortization and accretion	0	0	0	0
Costs and Expenses	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Goodwill impairment	0	0	0	0
Operating loss	0	0	0	0
Earnings from unconsolidated affiliates, net	0	0	0	0
Interest and debt expense, net	0	0	0	0
Loss from unconsolidated affiliates	(11.9)	5.8	29.6	(66.8)
Loss before income taxes	(11.9)	5.8		(66.8)
Provision (benefit) for income taxes	0	0		0
Net loss	(11.9)	5.8	29.6	(66.8)
Net income attributable to non-controlling partners in subsidiaries	0	0	0	0
Net income (loss) attributable to parent	(11.9)	5.8	29.6	(66.8)
Net income (loss) attributable to preferred unit holders		0		0
Net loss attributable to partners		5.8		(66.8)
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Revenues	0	0	0	0
Total costs of products/services sold	0	0	0	0
Expenses:
Operations and maintenance	0	0	0	0
General and administrative	23.2	16.4	40.9	29.8
Depreciation, amortization and accretion	0	0.9	0	1.1
Costs and Expenses	23.2	17.3	40.9	30.9
Loss on long-lived assets, net	0	0	0	0
Goodwill impairment	0	0	0	0
Operating loss	(23.2)	(17.3)	(40.9)	(30.9)
Earnings from unconsolidated affiliates, net	0	0	0	0
Interest and debt expense, net	(34.3)	(32.6)	(70.4)	(62.5)
Loss from unconsolidated affiliates	11.9	(5.8)	(29.6)	66.8
Loss before income taxes	(35.6)	(72.8)		(43.7)
Provision (benefit) for income taxes	0	0		0
Net loss	(35.6)	(72.8)	(130.9)	(43.7)
Net income attributable to non-controlling partners in subsidiaries	0	0	0	0
Net income (loss) attributable to parent	(35.6)	(72.8)	(130.9)	(43.7)
Net income (loss) attributable to preferred unit holders		7.5		16.7
Net loss attributable to partners		(80.3)		(60.4)
Gains (Losses) on Extinguishment of Debt	10	(17.1)	10	(17.1)
Guarantor Subsidiaries | Reportable Legal Entities
Revenues	601.9	641.5	1,137.9	1,373
Total costs of products/services sold	450	459.5	813.4	989.2
Expenses:
Operations and maintenance	41.4	43.9	83.1	94.5
General and administrative	4.8	10.9	9.3	23.1
Depreciation, amortization and accretion	67.1	68.6	132	137.2
Costs and Expenses	113.3	123.4	224.4	254.8
Loss on long-lived assets, net	(32.7)	(0.7)	(32.7)	(1.5)
Goodwill impairment	0	(68.6)	(109.7)	(68.6)
Operating loss	5.9	(10.7)	(42.3)	58.9
Earnings from unconsolidated affiliates, net	0	0	0	0
Interest and debt expense, net	0	0	0	0
Loss from unconsolidated affiliates	0	0	0	0
Loss before income taxes	5.9	(10.7)		58.9
Provision (benefit) for income taxes	0.2	0.1		0.5
Net loss	5.7	(10.8)	(42.3)	58.4
Net income attributable to non-controlling partners in subsidiaries	0	0	0	0
Net income (loss) attributable to parent	5.7	(10.8)	(42.3)	58.4
Net income (loss) attributable to preferred unit holders		0		0
Net loss attributable to partners		(10.8)		58.4
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Non-Guarantor Subsidiaries | Reportable Legal Entities
Revenues	0	0	0	0
Total costs of products/services sold	0	0	0	0
Expenses:
Operations and maintenance	0	0	0	0
General and administrative	0	0	0	0
Depreciation, amortization and accretion	0	0	0	0
Costs and Expenses	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Goodwill impairment	0	0	0	0
Operating loss	0	0	0	0
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Interest and debt expense, net	0	0	0	0
Loss from unconsolidated affiliates	0	0	0	0
Loss before income taxes	6.2	5		8.4
Provision (benefit) for income taxes	0	0		0
Net loss	6.2	5	12.7	8.4
Net income attributable to non-controlling partners in subsidiaries	6	5.7	11.9	11.3
Net income (loss) attributable to parent	0.2	(0.7)	0.8	(2.9)
Net income (loss) attributable to preferred unit holders		0		0
Net loss attributable to partners		(0.7)		(2.9)
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Crestwood Midstream Partners LP
Revenues	601.9	641.5	1,137.9	1,373
Total costs of products/services sold	450	459.5	813.4	989.2
Expenses:
Operations and maintenance	41.4	43.9	83.1	94.5
General and administrative	28	27.3	50.2	52.9
Depreciation, amortization and accretion	67.1	69.5	132	138.3
Costs and Expenses	136.5	140.7	265.3	285.7
Loss on long-lived assets, net	(32.7)	(0.7)	(32.7)	(1.5)
Goodwill impairment	0	(68.6)	(109.7)	(68.6)
Operating loss	(17.3)	(28)	(83.2)	28
Earnings from unconsolidated affiliates, net	6.2	5	12.7	8.4
Interest and debt expense, net	(34.3)	(32.6)	(70.4)	(62.5)
Loss from unconsolidated affiliates	0	0	0	0
Loss before income taxes	(35.4)	(72.7)	(130.9)	(43.2)
Provision (benefit) for income taxes	0.2	0.1	0	0.5
Net loss	(35.6)	(72.8)	(130.9)	(43.7)
Net income attributable to non-controlling partners in subsidiaries	6	5.7	11.9	11.3
Net income (loss) attributable to parent	(41.6)	(78.5)	(142.8)	(55)
Net income (loss) attributable to preferred unit holders	0	7.5	0	16.7
Net loss attributable to partners	(41.6)	(86)	(142.8)	(71.7)
Gains (Losses) on Extinguishment of Debt	$ 10	$ (17.1)	$ 10	$ (17.1)

Condensed Consolidating Finan55

Condensed Consolidating Financial Information (Statements Of Cash Flows) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Apr. 30, 2016	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities		$ 193	$ 211.1
Cash flows from investing activities:
Purchases of property, plant and equipment		(76.2)	(83.5)
Investment in unconsolidated affiliates		(5.5)	(28)
Net proceeds from sale of assets	$ 945	942	2.1
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		5.5	1
Net cash used in investing activities		865.8	(108.4)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt		1,078.8	2,154.6
Principal payments on long-term debt		(1,987.7)	(2,030.6)
Payments on capital leases		(0.9)	(1.2)
Payments for debt-related deferred costs		(3.3)	(11.7)
Distributions to partners		(137)	(51.5)
Distributions paid to non-controlling partners		(7.6)	(152.4)
Taxes paid for unit-based compensation vesting		(0.6)	(3.7)
Other		(0.1)	(0.1)
Net cash provided by (used in) financing activities		(1,058.4)	(110.2)
Net change in cash		0.4	(7.5)
Cash at beginning of period		0.5
Cash at end of period		0.9	1.3
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
Net proceeds from sale of assets		0	0
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		0	0
Capital contributions to consolidated affiliates		(2.8)	24.6
Net cash used in investing activities		(2.8)	24.6
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
Early Repayment of Senior Debt			0
Distributions to partners		0	0
Distributions paid to non-controlling partners		2.8	(24.6)
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		2.8	(24.6)
Net change in cash		0	0
Cash at beginning of period		0	0
Cash at end of period		0	0
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Cash flows from operating activities		(110.9)	(89.1)
Cash flows from investing activities:
Purchases of property, plant and equipment		(1)	(0.4)
Investment in unconsolidated affiliates		0	0
Net proceeds from sale of assets		0	0
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		0	0
Capital contributions to consolidated affiliates		2.8	(24.6)
Net cash used in investing activities		1.8	(25)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt		1,078.8	1,865.1
Principal payments on long-term debt		(1,986.8)	(1,713.2)
Payments on capital leases		0	(0.9)
Payments for debt-related deferred costs		(3.3)	(11.7)
Early Repayment of Senior Debt			(13.6)
Distributions to partners		(140.6)	(221.4)
Distributions paid to non-controlling partners		0	0
Taxes paid for unit-based compensation vesting		0	0
Change in intercompany balances		1,161.1	210
Other			(0.2)
Net cash provided by (used in) financing activities		109.2	114.1
Net change in cash		0.1	0
Cash at beginning of period		0.1	0
Cash at end of period		0.2	0
Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities		296.5	286.6
Cash flows from investing activities:
Purchases of property, plant and equipment		(75.2)	(83.1)
Investment in unconsolidated affiliates		0	0
Net proceeds from sale of assets		942	2.1
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		0	0
Capital contributions to consolidated affiliates		0	0
Net cash used in investing activities		866.8	(81)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt		0	0
Principal payments on long-term debt		(0.7)	0
Payments on capital leases		(0.9)	(0.3)
Payments for debt-related deferred costs		0	0
Early Repayment of Senior Debt			0
Distributions to partners		0	0
Distributions paid to non-controlling partners		0	0
Taxes paid for unit-based compensation vesting		(0.6)	(2.1)
Change in intercompany balances		(1,161.1)	(210)
Other			0
Net cash provided by (used in) financing activities		(1,163.3)	(212.4)
Net change in cash		0	(6.8)
Cash at beginning of period		0	7.6
Cash at end of period		0	0.8
Non-Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities		10.4	6
Cash flows from investing activities:
Purchases of property, plant and equipment		0	0
Investment in unconsolidated affiliates		(5.5)	(27.8)
Net proceeds from sale of assets		0	0
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		5.5	1
Capital contributions to consolidated affiliates		0	0
Net cash used in investing activities		0	(26.8)
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
Early Repayment of Senior Debt			0
Distributions to partners		(7.6)	(3.8)
Distributions paid to non-controlling partners		(2.8)	24.6
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		(10.4)	20.8
Net change in cash		0	0
Cash at beginning of period		0	0
Cash at end of period		0	0
Crestwood Midstream Partners LP
Cash flows from operating activities		196	203.5
Cash flows from investing activities:
Purchases of property, plant and equipment		(76.2)	(83.5)
Investment in unconsolidated affiliates		(5.5)	(27.8)
Net proceeds from sale of assets		942	2.1
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		5.5	1
Capital contributions to consolidated affiliates		0	0
Net cash used in investing activities		865.8	(108.2)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt		1,078.8	1,865.1
Principal payments on long-term debt		(1,987.5)	(1,713.2)
Payments on capital leases		(0.9)	(1.2)
Payments for debt-related deferred costs		(3.3)	(11.7)
Early Repayment of Senior Debt		0	(13.6)
Distributions to partners		(148.2)	(225.2)
Distributions paid to non-controlling partners		0	0
Taxes paid for unit-based compensation vesting		(0.6)	(2.1)
Change in intercompany balances		0	0
Other		0	(0.2)
Net cash provided by (used in) financing activities		(1,061.7)	(102.1)
Net change in cash		0.1	(6.8)
Cash at beginning of period		0.1	7.6
Cash at end of period		$ 0.2	$ 0.8