Crestwood Equity Partners (CEQP) 10-Q 31 Oct 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 29, 2019
Document Information [Line Items]
Document Transition Report	false
Document Quarterly Report	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Title of 12(b) Security	Common Units representing limited partnership interests
Entity Address, Address Line One	811 Main Street
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	CEQP
Entity Registrant Name	Crestwood Equity Partners LP
Entity File Number	001-34664
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1918951
Entity Central Index Key	0001136352
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		71,849,157
Entity Address, Address Line Two	Suite 3400
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77002
City Area Code	832
Local Phone Number	519-2200
Security Exchange Name	NYSE
Crestwood Midstream Partners LP
Document Information [Line Items]
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Registrant Name	Crestwood Midstream Partners LP
Entity File Number	001-35377
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1647837
Entity Central Index Key	0001304464
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash	$ 1.6	$ 0.9
Restricted cash, current	0	16.3
Accounts receivable, less allowance for doubtful accounts of $0.3 million at both September 30, 2019 and December 31, 2018	258.5	251.5
Inventory	43.5	64.6
Assets from price risk management activities	57.4	34.7
Prepaid expenses and other current assets	8.4	11.3
Total current assets	369.4	379.3
Property, plant and equipment	3,505.1	2,598.1
Less: accumulated depreciation	666.1	568.4
Property, plant and equipment, net	2,839	2,029.7
Operating lease, right-of-use assets, net	58.6
Intangible assets	1,076.3	770.3
Less: accumulated amortization	256.4	216.5
Intangible assets, net	819.9	553.8
Goodwill	218.9	138.6
Investments in unconsolidated affiliates	979.6	1,188.2
Other non-current assets	5.3	4.9
Total assets	5,290.7	4,294.5
Current liabilities:
Accounts payable	198.3	213
Accrued expenses and other liabilities	169	112.4
Liabilities from price risk management activities	4.8	5.8
Current portion of long-term debt	0.2	0.9
Total current liabilities	372.3	332.1
Long-term debt, less current portion	2,267.2	1,752.4
Long-term operating lease liabilities	45.6
Other long-term liabilities	225.3	173.6
Deferred income taxes	2.6	2.6
Total liabilities	2,913	2,260.7
Commitments and contingencies (Note 11)
Interest of non-controlling partner in subsidiary	425.1
Partners’ capital:
Crestwood Equity Partners LP partners’ capital (72,289,083 and 71,659,385 common and subordinated units issued and outstanding at September 30, 2019 and December 31, 2018)	1,340.6	1,240.5
Preferred units (71,257,445 units issued and outstanding at both September 30, 2019 and December 31, 2018)	612	612
Partners' capital	1,952.6	1,852.5
Interest of non-controlling partner in subsidiary (Note 10)	0	181.3
Total partners’ capital	1,952.6	2,033.8
Total liabilities and capital	5,290.7	4,294.5
Crestwood Midstream Partners LP
Assets
Cash	0.9	0.2
Restricted cash, current	0	16.3
Accounts receivable, less allowance for doubtful accounts of $0.3 million at both September 30, 2019 and December 31, 2018	258	249.9
Inventory	43.5	64.6
Assets from price risk management activities	57.4	34.7
Prepaid expenses and other current assets	8.4	11.3
Total current assets	368.2	377
Property, plant and equipment	3,835.1	2,928.2
Less: accumulated depreciation	834.2	725.9
Property, plant and equipment, net	3,000.9	2,202.3
Operating lease, right-of-use assets, net	58.6
Intangible assets	1,076.3	770.3
Less: accumulated amortization	256.4	216.5
Intangible assets, net	819.9	553.8
Goodwill	218.9	138.6
Investments in unconsolidated affiliates	979.6	1,188.2
Other non-current assets	2	2.1
Total assets	5,448.1	4,462
Current liabilities:
Accounts payable	195.8	210.5
Accrued expenses and other liabilities	168.1	111.3
Liabilities from price risk management activities	4.8	5.8
Current portion of long-term debt	0.2	0.9
Total current liabilities	368.9	328.5
Long-term debt, less current portion	2,267.2	1,752.4
Long-term operating lease liabilities	45.6
Other long-term liabilities	221.8	171
Deferred income taxes	0.7	0.6
Total liabilities	2,904.2	2,252.5
Interest of non-controlling partner in subsidiary	425.1
Partners’ capital:
Partners' capital	2,118.8	2,028.2
Interest of non-controlling partner in subsidiary (Note 10)		181.3
Total partners’ capital	2,118.8	2,209.5
Total liabilities and capital	$ 5,448.1	$ 4,462

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 0.3	$ 0.3
Limited Partners' Capital Account, Units Issued	72,289,083	71,659,385
Limited Partners' Capital Account, Units Outstanding	72,289,083	71,659,385
Preferred Units, Issued	71,257,445	71,257,445
Preferred Units, Outstanding	71,257,445	71,257,445
Crestwood Midstream Partners LP
Allowance for doubtful accounts	$ 0.3	$ 0.3

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Revenues	$ 823.6	$ 930.2	$ 2,342.2	$ 2,885.7
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 12)	3.8	45.7	39.1	91
Total costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operating expenses and other:
Operations and maintenance	36	29.6	99.3	96
General and administrative	24.9	25.5	84.4	72.8
Depreciation, amortization and accretion	51.5	39.2	140.6	128.8
Loss on long-lived assets, net	0.1	3.6	2.1	27.7
Gain Loss on Acquisition	0	0	(209.4)	0
Total expenses	112.5	97.9	117	325.3
Operating income (loss)	53.7	4.8	335	41.7
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Interest and debt expense, net	(30.6)	(25.1)	(83.3)	(73.8)
Other income, net	0.1	0	0.3	0.2
Income (loss) before income taxes	33.6	(5.2)	273	7.6
Provision for income taxes	0	0	(0.3)	(0.2)
Net income (loss)	33.6	(5.2)	272.7	7.4
Net Income Attributable to Noncontrolling Interest	9.9	4.1	24.5	12.1
Net income (loss) attributable to parent	23.7	(9.3)	248.2	(4.7)
Net income attributable to preferred unit holders	15	15	45	45.1
Net income (loss) attributable to partners	8.7	(24.3)	203.2	(49.8)
Net Income (Loss) Allocated to Subordinated Limited Partners	0.1	0	1.2	0
Common unitholders’ interest in net income (loss)	$ 8.6	$ (24.3)	$ 202	$ (49.8)
Net income (loss) per limited partner unit:
Basic (in dollars per share)	$ 0.12	$ (0.34)	$ 2.81	$ (0.70)
Diluted (in dollars per share)	$ 0.12	$ (0.34)	$ 2.66	$ (0.70)
Weighted-average limited partners’ units outstanding:
Basic (units)	71,800	71,200	71,800	71,200
Dilutive units (units)	3,700	0	4,600	0
Diluted (units)	75,500	71,200	76,400	71,200
Crestwood Midstream Partners LP
Revenues:
Revenues	$ 823.6	$ 930.2	$ 2,342.2	$ 2,885.7
Related party (Note 12)	0	0.3	0	0.9
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 12)	3.8	45.7	39.1	91
Total costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operating expenses and other:
Operations and maintenance	36	29.6	99.3	96
General and administrative	23.7	24.6	80.6	69.9
Depreciation, amortization and accretion	55.1	42.7	151.2	137.9
Loss on long-lived assets, net	0.1	3.6	2.1	27.7
Gain Loss on Acquisition	0	0	(209.4)	0
Total expenses	114.9	100.5	123.8	331.5
Operating income (loss)	51.3	2.2	328.2	35.5
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Interest and debt expense, net	(30.6)	(25.1)	(83.3)	(73.8)
Income (loss) before income taxes	31.1	(7.8)	265.9	1.2
Provision for income taxes	0.1	0	(0.2)	(0.1)
Net income (loss)	31.2	(7.8)	265.7	1.1
Net Income Attributable to Noncontrolling Interest	9.9	4.1	24.5	12.1
Net income (loss) attributable to parent	21.3	(11.9)	241.2	(11)
Product
Revenues:
Revenues	710.7	845	2,037.9	2,620.2
Related party (Note 12)	0.3	0	2.8	0
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	646.8	770.8	1,829.8	2,391.5
Product | Crestwood Midstream Partners LP
Revenues:
Revenues	710.7	845	2,037.9	2,620.2
Related party (Note 12)	0.3	0	2.8	0
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	646.8	770.8	1,829.8	2,391.5
Service
Revenues:
Revenues	112.9	85.2	304.3	265.5
Related party (Note 12)	0	0.3	0	0.9
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	6.8	11	21.3	36.2
Service | Crestwood Midstream Partners LP
Revenues:
Revenues	112.9	85.2	304.3	265.5
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	6.8	11	21.3	36.2
Gathering and Processing Segment
Revenues:
Revenues	257.8	242.3	639.8	838.1
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	164.1	205.1	411	701.6
Operating expenses and other:
Operations and maintenance	27.5	17.2	70.2	52.7
General and administrative	0	0	0	0
Loss on long-lived assets, net	0.1	2.2	2.1	2.1
Gain Loss on Acquisition			(209.4)
Earnings from unconsolidated affiliates, net	(0.5)	5.6	(3.5)	15.8
Gathering and Processing Segment | Crestwood Midstream Partners LP
Revenues:
Revenues	257.8	242.3	639.8	838.1
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	164.1	205.1	411	701.6
Operating expenses and other:
Operations and maintenance	27.5	17.2	70.2	52.7
General and administrative	0	0	0	0
Loss on long-lived assets, net	0.1	2.2	2.1	2.1
Gain Loss on Acquisition			(209.4)
Earnings from unconsolidated affiliates, net	(0.5)	5.6	(3.5)	15.8
Gathering and Processing Segment | Product
Revenues:
Revenues	155	173.5	370.8	632.6
Gathering and Processing Segment | Product | Crestwood Midstream Partners LP
Revenues:
Revenues	155	173.5	370.8	632.6
Gathering and Processing Segment | Service
Revenues:
Revenues	102.8	68.8	269	205.4
Gathering and Processing Segment | Service | Crestwood Midstream Partners LP
Revenues:
Revenues	102.8	68.8	269	205.4
Marketing Supply and Logistics
Revenues:
Revenues	561.7	684.4	1,685.6	2,034.8
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	493.2	622.5	1,479.1	1,817
Operating expenses and other:
Operations and maintenance	7.4	11.7	26.1	41
General and administrative	0	0	0	0
Loss on long-lived assets, net	0	2.5	0.2	26.7
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
Marketing Supply and Logistics | Crestwood Midstream Partners LP
Revenues:
Revenues	561.7	684.4	1,685.6	2,034.8
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	493.2	622.5	1,479.1	1,817
Operating expenses and other:
Operations and maintenance	7.4	11.7	26.1	41
General and administrative	0	0	0	0
Loss on long-lived assets, net	0	2.5	0.2	26.7
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
Marketing Supply and Logistics | Product
Revenues:
Revenues	555.4	671.5	1,664.3	1,987.6
Marketing Supply and Logistics | Product | Crestwood Midstream Partners LP
Revenues:
Revenues	555.4	671.5	1,664.3	1,987.6
Marketing Supply and Logistics | Service
Revenues:
Revenues	6	12.6	18.5	46.4
Marketing Supply and Logistics | Service | Crestwood Midstream Partners LP
Revenues:
Revenues	6	12.6	18.5	46.4
Storage and Transportation
Revenues:
Revenues	4.1	3.5	16.8	12.8
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	0.1	(0.1)	0.1	0.1
Operating expenses and other:
Operations and maintenance	1.1	0.7	3	2.3
General and administrative	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	10.9	9.5	24.5	23.7
Storage and Transportation | Crestwood Midstream Partners LP
Revenues:
Revenues	4.1	3.5	16.8	12.8
Costs of product/services sold (exclusive of items shown separately below):
Total costs of product/services sold	0.1	(0.1)	0.1	0.1
Operating expenses and other:
Operations and maintenance	1.1	0.7	3	2.3
General and administrative	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	10.9	9.5	24.5	23.7
Storage and Transportation | Service
Revenues:
Revenues	4.1	3.5	16.8	12.8
Storage and Transportation | Service | Crestwood Midstream Partners LP
Revenues:
Revenues	$ 4.1	$ 3.5	$ 16.8	$ 12.8

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 33.6	$ (5.2)	$ 272.7	$ 7.4
Change in fair value of Suburban Propane Partners, L.P. units	(0.1)	0	0.6	(0.1)
Comprehensive income (loss)	33.5	(5.2)	273.3	7.3
Comprehensive income attributable to non-controlling partner	9.9	4.1	24.5	12.1
Comprehensive income (loss) attributable to Crestwood Equity Partners LP	$ 23.6	$ (9.3)	$ 248.8	$ (4.8)

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	Preferred Units	Common Units	Subordinated Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											70,300,000	400,000
Preferred Units, Outstanding										71,300,000
Beginning balance at Dec. 31, 2017		$ 612	$ 1,393.5	$ 175	$ 2,180.5		$ 2,195.4	$ 175	$ 2,370.4
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(42.7)		(57.7)		(60.5)		(60.5)
Unit-based compensation charges			7.2		7.2		7.2		7.2
Unit-based compensation charges (in shares)											1,200,000
Taxes paid for unit-based compensation vesting			(6.3)		(6.3)		(6.3)		(6.3)
Taxes paid for unit-based compensation vesting (in shares)											(200,000)
Change in fair value of Suburban Propane Partners, L.P. units			(0.3)		(0.3)
Other		(0.1)	(0.1)		(0.2)		0.2		0.2
Net income (loss)		15	15.1	4	34.1		28.4	4	32.4
Ending Balance at Mar. 31, 2018		611.9	1,373.9	179	2,164.8		2,171.9	179	2,350.9
Beginning balance at Dec. 31, 2017		612	1,393.5	175	2,180.5		2,195.4	175	2,370.4
Increase (Decrease) in Partners' Capital [Roll Forward]
Change in fair value of Suburban Propane Partners, L.P. units	$ (0.1)
Net income (loss)	7.4					$ 1.1
Ending Balance at Sep. 30, 2018		612	1,243.4	180.5	2,035.9		2,034	180.5	2,214.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,300,000	400,000
Preferred Units, Outstanding										71,300,000
Beginning balance at Mar. 31, 2018		611.9	1,373.9	179	2,164.8		2,171.9	179	2,350.9
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(42.7)	(3.3)	(61)		(59.5)	(3.3)	(62.8)
Unit-based compensation charges			10.3		10.3		10.3		10.3
Taxes paid for unit-based compensation vesting			(0.6)		(0.6)		(0.6)		(0.6)
Change in fair value of Suburban Propane Partners, L.P. units			0.2		0.2
Other			(0.2)		(0.2)
Net income (loss)		15.1	(40.6)	4	(21.5)		(27.5)	4	(23.5)
Ending Balance at Jun. 30, 2018		612	1,300.3	179.7	2,092		2,094.6	179.7	2,274.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,300,000	400,000
Preferred Units, Outstanding										71,300,000
Distributions to partners		(15)	(42.7)	(3.3)	(61)		(59)	(3.3)	(62.3)
Unit-based compensation charges			10.4		10.4		10.4		10.4
Unit-based compensation charges (in shares)											(100,000)
Change in fair value of Suburban Propane Partners, L.P. units	0
Other			(0.3)		(0.3)		(0.1)		(0.1)
Net income (loss)	$ (5.2)	15	(24.3)	4.1	(5.2)	(7.8)	(11.9)	4.1	(7.8)
Ending Balance at Sep. 30, 2018		612	1,243.4	180.5	2,035.9		2,034	180.5	2,214.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,200,000	400,000
Preferred Units, Outstanding										71,300,000
Common Unit, Outstanding											71,200,000	400,000
Preferred Units, Outstanding	71,257,445									71,300,000
Beginning balance at Dec. 31, 2018	$ 1,852.5	612	1,240.5	181.3	2,033.8	2,028.2	2,028.2	181.3	2,209.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(43.1)	(3.3)	(61.4)		(57.8)	(3.3)	(61.1)
Unit-based compensation charges			17.3		17.3		17.3		17.3
Unit-based compensation charges (in shares)											900,000
Taxes paid for unit-based compensation vesting			(7)		(7)		(7)		(7)
Taxes paid for unit-based compensation vesting (in shares)											(200,000)
Change in fair value of Suburban Propane Partners, L.P. units			0.4		0.4
Other			(0.7)		(0.7)		(0.3)		(0.3)
Net income (loss)		15	(4.9)	4	14.1		7.6	4	11.6
Ending Balance at Mar. 31, 2019		612	1,202.5	182	1,996.5		1,988	182	2,170
Beginning balance at Dec. 31, 2018	1,852.5	612	1,240.5	181.3	2,033.8	2,028.2	2,028.2	181.3	2,209.5
Increase (Decrease) in Partners' Capital [Roll Forward]
Change in fair value of Suburban Propane Partners, L.P. units	0.6
Net income (loss)	272.7					265.7
Ending Balance at Sep. 30, 2019	1,952.6	612	1,340.6	0	1,952.6	2,118.8	2,118.8	0	2,118.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,900,000	400,000
Preferred Units, Outstanding										71,300,000
Beginning balance at Mar. 31, 2019		612	1,202.5	182	1,996.5		1,988	182	2,170
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(43.1)	(3.3)	(61.4)		(59.7)	(3.3)	(63)
Unit-based compensation charges			11.3		11.3		11.3		11.3
Taxes paid for unit-based compensation vesting			(3.6)		(3.6)		(3.6)		(3.6)
Taxes paid for unit-based compensation vesting (in shares)											(100,000)
Change in fair value of Suburban Propane Partners, L.P. units			0.3		0.3
Other			(0.4)	0.1	(0.3)		(0.1)	0.1	0
Reclassification of Permanent Equity to Temporary Equity				(178.8)	(178.8)			(178.8)	(178.8)
Net income (loss)		15	199.4		214.4		212.3		212.3
Ending Balance at Jun. 30, 2019		612	1,366.4	0	1,978.4		2,148.2	0	2,148.2
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,800,000	400,000
Preferred Units, Outstanding										71,300,000
Distributions to partners		(15)	(43.1)	0	(58.1)		(59.8)	0	(59.8)
Unit-based compensation charges			9.3		9.3		9.3		9.3
Taxes paid for unit-based compensation vesting			(0.3)		(0.3)		(0.3)		(0.3)
Taxes paid for unit-based compensation vesting (in shares)											0
Change in fair value of Suburban Propane Partners, L.P. units	(0.1)		(0.1)		(0.1)
Other			(0.3)		(0.3)		0.1		0.1
Net income (loss)	33.6	15	8.7		23.7	31.2	21.3	0	21.3
Ending Balance at Sep. 30, 2019	$ 1,952.6	$ 612	$ 1,340.6	$ 0	$ 1,952.6	$ 2,118.8	$ 2,118.8	$ 0	$ 2,118.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Unit, Outstanding											71,800,000	400,000
Preferred Units, Outstanding	71,257,445									71,300,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net income (loss)	$ 272.7	$ 7.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	140.6	128.8
Amortization of debt-related deferred costs	4.6	5.4
Unit-based compensation charges	41.6	27.9
Loss on long-lived assets, net	2.1	27.7
Gain Loss on Acquisition	(209.4)	0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	6.9	(0.3)
Deferred income taxes	0	(0.2)
Other	0	0.2
Changes in operating assets and liabilities	19.2	4
Net cash provided by operating activities	278.3	200.9
Investing activities
Payments to Acquire Businesses, Net of Cash Acquired	(462.1)	0
Purchases of property, plant and equipment	(347)	(205.7)
Investment in unconsolidated affiliates	(52.3)	(27.7)
Capital distributions from unconsolidated affiliates	27.3	34.6
Payments for (Proceeds from) Other Investing Activities	(0.4)	8.6
Net cash used in investing activities	(834.5)	(190.2)
Financing activities
Proceeds from the issuance of long-term debt	1,993.7	1,152.1
Payments on long-term debt	(1,475.2)	(973.7)
Payments on finance leases	(2.6)
Payments on capital leases		(1.1)
Proceeds from Noncontrolling Interests	235	0
Payments for deferred financing costs	(9)	0
Distributions to partners	(129.3)	(128.1)
Distributions to non-controlling partner	(15.8)	(6.6)
Distributions to preferred unit holders	(45)	(45)
Taxes paid for unit-based compensation vesting	(10.9)	(6.9)
Other	(0.3)	(0.3)
Net cash provided by (used in) financing activities	540.6	(9.6)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(15.6)	1.1
Cash and restricted cash at beginning of period	17.2	1.3
Cash and restricted cash at end of period	1.6
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	(22.9)	(1.6)
Crestwood Midstream Partners LP
Operating activities
Net income (loss)	265.7	1.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	151.2	137.9
Amortization of debt-related deferred costs	4.6	5.4
Unit-based compensation charges	41.6	27.9
Loss on long-lived assets, net	2.1	27.7
Gain Loss on Acquisition	(209.4)	0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	6.9	(0.3)
Deferred income taxes	0.1	(0.1)
Other	0	0.2
Changes in operating assets and liabilities	18.2	6.6
Net cash provided by operating activities	281	206.4
Investing activities
Payments to Acquire Businesses, Net of Cash Acquired	(462.1)	0
Purchases of property, plant and equipment	(347)	(205.7)
Investment in unconsolidated affiliates	(52.3)	(27.7)
Capital distributions from unconsolidated affiliates	27.3	34.6
Payments for (Proceeds from) Other Investing Activities	(0.4)	8.6
Net cash used in investing activities	(834.5)	(190.2)
Financing activities
Proceeds from the issuance of long-term debt	1,993.7	1,152.1
Payments on long-term debt	(1,475.2)	(973.7)
Payments on finance leases	(2.6)
Payments on capital leases		(1.1)
Proceeds from Noncontrolling Interests	235	0
Payments for deferred financing costs	(9)	0
Distributions to partners	(177.3)	(179)
Distributions to non-controlling partner	(15.8)	(6.6)
Taxes paid for unit-based compensation vesting	(10.9)	(6.9)
Net cash provided by (used in) financing activities	537.9	(15.2)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(15.6)	1
Cash and restricted cash at beginning of period	16.5	1
Cash and restricted cash at end of period	0.9
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	$ (22.9)	$ (1.6)

Organization and Business Descr

Organization and Business Description	9 Months Ended
	Sep. 30, 2019
Disclosure Partnership Organization And Basis Of Presentation Narrative [Abstract]
Organization and Business Description	Organization and Business Description Organization 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 LP 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 2018 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 22, 2019. The financial information as of September 30, 2019 , and for the three and nine months ended September 30, 2019 and 2018 , is unaudited. The consolidated balance sheets as of December 31, 2018 , were derived from the audited balance sheets filed in our 2018 Annual Report on Form 10-K. Business Description 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 that connect fundamental energy supply with energy demand across the United States. 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.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
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 Generally Accepted Accounting Principles (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. Significant Accounting Policies Effective January 1, 2019, we adopted the following accounting standard. There were no other material changes in our significant accounting policies from those described in our 2018 Annual Report on Form10-K. Leases We maintain leases in the ordinary course of our business activities. Our leases include those for office buildings, crude oil railroad cars, certain vehicles and other operating facilities and equipment. We also sublease certain of our crude oil railroad cars and trucks to a third party. We do not have any material leases where we are considered to be the lessor. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. Prior to January 1, 2019, we classified our leases as either capital or operating leases under Accounting Standards Codification (ASC) Topic 840, Leases (Topic 840) . We recognized assets (included in property, plant and equipment) and liabilities (included in accrued expenses and other liabilities and other long-term liabilities) related to our capital leases on our consolidated balance sheets. We also recognized depreciation expense and interest expense related to our capital leases on our consolidated statements of operations. The majority of our lease arrangements were classified as operating leases, under which we did not recognize assets or liabilities on our consolidated balance sheets, but rather recognized lease payments on our consolidated statements of operations as either costs of product/services sold or operations and maintenance expense on a straight-line basis over the lease term. On January 1, 2019, we adopted the provisions of ASC Topic 842, 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 adopted the standard using the modified retrospective method. Based on the practical expedients allowed for in the standard, we did not reassess the current GAAP classification of leases, easements and rights of way that existed as of January 1, 2019, and we did not utilize the hindsight method in determining the assets and liabilities to be recorded for our existing leases on January 1, 2019. The adoption of this standard required us to make significant judgments on whether our revenue and expenditure-related contracts were considered to be leases (or contain leases) under Topic 842 , and if contracts were considered to be leases whether they should be considered operating leases or finance leases under the new standard. We do not have any material revenue contracts that are considered leases under Topic 842 . Upon the adoption of this standard, on January 1, 2019, we recorded a $67.5 million increase to our operating lease right-of-use assets, an $18.6 million increase to our accrued expenses and other liabilities and a $48.9 million increase to our long-term operating lease liabilities, related to reflecting our operating leases on our consolidated balance sheet as a result of adopting the new standard. We also recorded a $1.6 million increase to our property, plant and equipment, $0.3 million increase to our accrued expenses and other liabilities and a $1.3 million increase to our other long-term liabilities, related to our finance leases (which were all formerly capital leases under Topic 840 ) as a result of applying the provisions of the new standard to the leases. The adoption of the standard did not result in a material cumulative effect of accounting change to our consolidated financial statements. The following table summarizes the balance sheet information related to our operating and finance leases at September 30, 2019 ( in millions ): Operating Leases Operating lease right-of-use assets, net $ 58.6 Accrued expenses and other liabilities $ 18.5 Long-term operating lease liabilities 45.6 Total operating lease liabilities $ 64.1 Finance Leases Property, plant and equipment $ 14.7 Less: accumulated depreciation 4.5 Property, plant and equipment, net $ 10.2 Accrued expenses and other liabilities $ 3.1 Other long-term liabilities 5.9 Total finance lease liabilities $ 9.0 The estimation of our right-of-use assets and lease liabilities requires us to make significant assumptions and judgments about the terms of the leases, variable payments, and discount rates. Our operating leases have remaining terms that vary from one year to 20 years and certain of those leases have renewal options to extend the leases from one year to ten years at the end of each lease term, or terminate the leases at our sole discretion. In addition, our finance leases have remaining terms that vary from two years to four years and certain of those leases have options to purchase the lease property by the end of the lease term. We made significant assumptions on the likelihood on whether we would renew our leases or purchase the property at the end of the lease terms in determining the discounted cash flows to measure our right-of-use assets and lease liabilities. The estimation of variable lease payments in determining discounted cash flows, including those with usage-based costs, also required us to make significant assumptions on the timing and nature of the variability of those payments based on the lease terms. We utilized discount rates ranging from 3.5% to 8.3% to estimate the discounted cash flows used in estimating our right-of-use assets and lease liabilities as of September 30, 2019 , which were primarily based on our credit-adjusted collateralized incremental borrowing rate. We recognize operating lease expense and amortize our right-of-use assets for our finance leases on a straight-line basis over the term of the respective leases. We have applied the practical expedient of not separating the lease and non-lease components for our leases where the predominant consideration paid related to the underlying operating and finance lease contracts relate to the lease component. The following table presents the costs and sublease income associated with our operating and finance leases for the three and nine months ended September 30, 2019 ( in millions ): Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating leases: Operating lease expense (1)(2) $ 6.5 $ 21.5 Sublease income (3) (0.3 ) (0.7 ) Total operating lease expense, net $ 6.2 $ 20.8 Finance leases: Amortization of right-of-use assets (4) $ 0.9 $ 2.7 Interest on lease liabilities (5) 0.1 0.5 Total finance lease expense $ 1.0 $ 3.2 (1) Approximately $3.8 million and $13.3 million is included in costs of product/services sold on our consolidated statements of operations for the three and nine months ended September 30, 2019 , and $2.7 million and $8.2 million is included in operations and maintenance expense on our consolidated statements of operations for the three and nine months ended September 30, 2019 . (2) Includes short-term and variable lease costs of approximately $0.7 million and $2.7 million for the three and nine months ended September 30, 2019 . (3) Included in marketing, supply and logistics service revenues on our consolidated statements of operations. (4) Included in depreciation, amortization and accretion expense on our consolidated statements of operations. (5) Included in interest and debt expense, net on our consolidated statements of operations. The following table presents supplemental cash flow information for our operating and finance leases for the nine months ended September 30, 2019 ( in millions ): Cash paid for lease liabilities: Operating cash flows from operating leases $ 17.5 Operating cash flows from finance leases $ 0.5 Financing cash flows from finance leases $ 2.6 Right-of-use assets obtained in exchange for lease obligations: Operating leases (1) $ 4.2 Finance leases $ 1.7 (1) Includes approximately $2.9 million of operating leases obtained from the Jackalope Acquisition, which is further discussed in Note 3. The following table presents the weighted-average remaining lease term and the weighted-average discount rate associated with our operating and finance leases as of September 30, 2019 : Weighted-average remaining lease term (in years) : Operating leases 4.4 Finance leases 2.8 Weighted-average discount rate: Operating leases 5.9 % Finance leases 7.3 % The following table presents the future minimum lease liabilities under Topic 842 and Topic 840 for our leases for the next five years and in total thereafter ( in millions ): Topic 842 Topic 840 September 30, 2019 December 31, 2018 Year Ending December 31, Operating Leases Finance Leases Total Operating Leases Capital Leases Total 2019 (1) $ 5.4 $ 0.9 $ 6.3 $ 22.3 $ 3.0 $ 25.3 2020 20.8 3.6 24.4 18.1 3.3 21.4 2021 16.3 3.5 19.8 14.4 3.2 17.6 2022 11.1 1.9 13.0 9.7 1.9 11.6 2023 6.7 0.1 6.8 6.0 — 6.0 Thereafter 13.6 — 13.6 10.7 — 10.7 Total lease payments 73.9 10.0 83.9 81.2 11.4 92.6 Less: Interest 9.8 1.0 10.8 — 1.3 1.3 Present value of lease liabilities $ 64.1 $ 9.0 $ 73.1 $ 81.2 $ 10.1 $ 91.3 (1) Represents the remainder of 2019 at September 30, 2019 . New Accounting Pronouncement Issued But Not Yet Adopted As of September 30, 2019 , the following accounting standard had not yet been adopted by us: In June 2016, the Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326) , which provides guidance on how companies should evaluate their accounts and notes receivable and other financial instruments for impairment. The standard requires companies to evaluate their financial instruments for impairment by recording an allowance for doubtful accounts and/or bad debt expense based on certain categories of instruments rather than a specific identification approach. We will adopt the provisions of this standard effective January 1, 2020 and are currently evaluating the impact that this standard may have on our consolidated financial statements.

Acquisition and Divestiture (No

Acquisition and Divestiture (Notes)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisition	Acquisition and Divestiture Acquisition On April 9, 2019, Crestwood Niobrara LLC (Crestwood Niobrara), our consolidated subsidiary, acquired Williams Partners LP’s (Williams) 50% equity interest in Jackalope Gas Gathering Services, L.L.C. (Jackalope) for approximately $484.6 million (Jackalope Acquisition). The acquisition was funded through a combination of borrowings under the CMLP credit facility and the issuance of $235 million of new preferred units to CN Jackalope Holdings LLC (Jackalope Holdings) (see Note 10 for a further discussion of the issuance of the new preferred units). Prior to the Jackalope Acquisition, Crestwood Niobrara owned a 50% equity interest in Jackalope, which we accounted for under the equity method of accounting. As a result of this transaction, Crestwood Niobrara controls and owns 100% of the equity interests in Jackalope. The financial results of Jackalope are included in our gathering and processing segment from the date of the acquisition. Transaction costs related to the Jackalope Acquisition were approximately $2.8 million during the nine months ended September 30, 2019 . These costs are included in operations and maintenance expenses in our consolidated statements of operations. The fair value of Jackalope has been allocated to the assets acquired and liabilities assumed based on their preliminary fair values. Those fair values are Level 3 fair value measurements and were developed by management with the assistance of a third-party valuation firm. The preliminary fair values were estimated primarily utilizing market related information and other projections on the performance of the assets acquired, including an analysis of discounted cash flows at a discount rate of approximately 12% . The preliminary fair values are subject to change pending a final determination of the fair value of the assets and liabilities acquired as more information is received about their respective values. We expect to finalize the purchase price allocation for this transaction during the fourth quarter of 2019. The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the acquisition date (in millions ): Cash $ 22.5 Other current assets 30.9 Property, plant and equipment 532.9 Intangible assets 306.0 Goodwill 80.3 Current liabilities (30.4 ) Other long-term liabilities (21.5 ) Estimated fair value of 100% interest in Jackalope 920.7 Less: Elimination of equity investment in Jackalope 226.7 Gain on acquisition of Jackalope 209.4 Total purchase price $ 484.6 The identifiable intangible assets primarily consists of a customer contract that has a weighted-average remaining life of 18 years . The goodwill recognized relates primarily to anticipated operating synergies between the assets acquired and our existing operations. The fair value of the assets acquired and liabilities assumed in the Jackalope Acquisition exceeded the sum of the cash consideration paid and the historical book value of our 50% equity interest in Jackalope (which was remeasured at fair value and derecognized) and, as a result, we recognized a gain of approximately $209.4 million . This gain is included in gain on acquisition in our consolidated statements of operations. Our consolidated statements of operations include the results of Jackalope since April 9, 2019, the closing date of the acquisition. During the three and nine months ended September 30, 2019 , we recognized approximately $23.2 million and $43.4 million of revenues and $7.7 million and $11.1 million of net income related to Jackalope’s operations. The tables below presents selected unaudited pro forma information as if the Jackalope Acquisition had occurred on January 1, 2018 (in millions) . The pro forma information is not necessarily indicative of the financial results that would have occurred if the transaction had been completed as of the dates indicated. The amounts have been calculated after applying our accounting policies and adjusting the results to reflect the depreciation, amortization and accretion expense that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been made at the beginning of the respective reporting period. The pro forma net income also includes the effects of interest expense on incremental borrowings and recognition of deferred revenue. Crestwood Equity Three Months Ended Nine Months Ended September 30, September 30, 2018 2019 2018 Revenues $ 949.5 $ 2,362.9 $ 2,936.8 Net income (loss) $ (10.5 ) $ 266.3 $ (10.8 ) Crestwood Midstream Three Months Ended Nine Months Ended September 30, September 30, 2018 2019 2018 Revenues $ 949.5 $ 2,362.9 $ 2,936.8 Net income (loss) $ (13.1 ) $ 259.3 $ (17.1 ) Divestiture In October 2018, we sold our West Coast facilities, which were previously included in our Marketing, Supply and Logistics segment, to a third party. During the three and nine months ended September 30, 2018, we recorded a loss on long-lived assets of approximately $2.4 million and $26.9 million related to the difference between the carrying value and fair value of these assets during those periods.

Certain Balance Sheet Informati

Certain Balance Sheet Information	9 Months Ended
	Sep. 30, 2019
Balance Sheet Related Disclosures [Abstract]
Certain Balance Sheet Information	Certain Balance Sheet Information Accrued Expenses and Other Liabilities Accrued expenses and other liabilities consisted of the following ( in millions ): CEQP CMLP September 30, December 31, September 30, December 31, 2019 2018 2019 2018 Accrued expenses (1) $ 57.0 $ 64.8 $ 56.1 $ 63.7 Accrued property taxes 6.0 2.6 6.0 2.6 Income tax payable 0.2 0.3 0.2 0.3 Interest payable 53.8 19.8 53.8 19.8 Accrued additions to property, plant and equipment 20.1 10.5 20.1 10.5 Operating leases 18.5 — 18.5 — Finance leases 3.1 2.4 3.1 2.4 Deferred revenue 10.3 12.0 10.3 12.0 Total accrued expenses and other liabilities $ 169.0 $ 112.4 $ 168.1 $ 111.3 (1) Includes $16.2 million of related party accrued expenses at December 31, 2018 related to deposits received from Jackalope prior to the acquisition of the remaining 50%

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	9 Months Ended
	Sep. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Variable Interest Entity Crestwood Permian Basin Holdings LLC (Crestwood Permian) is a joint venture owned by Crestwood Infrastructure Holdings LLC (Crestwood Infrastructure), our wholly-owned subsidiary, and an affiliate of First Reserve Management, L.P. (First Reserve). We manage and account for our 50% ownership interest in Crestwood Permian, which is a variable interest entity, under the equity method of accounting as we exercise significant influence, but do not control Crestwood Permian and we are not its primary beneficiary due to First Reserve’s rights to exercise control over the entity. Net Investments and Earnings Our net investments in and earnings from our unconsolidated affiliates are as follows ( in millions ): Investment Earnings (Loss) from Unconsolidated Affiliates September 30, December 31, Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 2019 2018 Stagecoach Gas Services LLC (1) $ 817.1 $ 830.4 $ 10.5 $ 8.8 $ 23.9 $ 21.5 Jackalope Gas Gathering Services, L.L.C. (2) — 210.2 — 4.5 3.7 11.3 Crestwood Permian Basin Holdings LLC (3) 115.6 104.3 (0.5 ) 1.1 (7.2 ) 4.5 Tres Palacios Holdings LLC (4) 38.6 35.0 0.5 0.1 0.8 0.5 Powder River Basin Industrial Complex, LLC (5) 8.3 8.3 (0.1 ) 0.6 (0.2 ) 1.7 Total $ 979.6 $ 1,188.2 $ 10.4 $ 15.1 $ 21.0 $ 39.5 (1) As of September 30, 2019 , our equity in the underlying net assets of Stagecoach Gas Services LLC (Stagecoach Gas) exceeded our investment balance by approximately $51.3 million . This excess amount is entirely attributable to goodwill and, as such, is not subject to amortization. Pursuant to the Stagecoach limited liability company agreement, our share of Stagecoach’s equity earnings increased from 40% to 50% effective July 1, 2019. Our Stagecoach Gas investment is included in our storage and transportation segment. (2) On April 9, 2019, Crestwood Niobrara acquired Williams’ 50% equity interest in Jackalope, and as a result, Crestwood Niobrara controls and owns 100% of the equity interests in Jackalope. As a result of this transaction, we eliminated our historical equity investment in Jackalope of approximately $226.7 million as of April 9, 2019 and began consolidating Jackalope’s operations. Our Jackalope investment was included in our gathering and processing segment. For a further discussion of Crestwood Niobrara’s acquisition of the remaining 50% equity interest in Jackalope, see Note 3. (3) As of September 30, 2019 , the difference of $10.6 million between our equity in Crestwood Permian’s net assets and our investment balance is not subject to amortization. Pursuant to the Crestwood Permian limited liability company agreement, we were allocated 100% of Crestwood New Mexico Pipeline LLC’s (Crestwood New Mexico) earnings through June 30, 2018. Effective July 1, 2018, our equity earnings from Crestwood New Mexico is based on our ownership percentage of Crestwood Permian, which is currently 50% . Our Crestwood Permian investment is included in our gathering and processing segment. (4) As of September 30, 2019 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $24.4 million . Our Tres Holdings investment is included in our storage and transportation segment. (5) As of September 30, 2019 , our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) exceeded our investment balance by approximately $5.6 million . Our PRBIC investment is included in our storage and transportation segment. Summarized Financial Information of Unconsolidated Affiliates Below is the summarized operating results for our significant unconsolidated affiliates ( in millions; amounts represent 100% of unconsolidated affiliate information ): Nine Months Ended September 30, 2019 2018 Operating Revenues Operating Expenses Net Income (Loss) Operating Revenues Operating Expenses Net Income Stagecoach Gas $ 120.8 $ 61.1 $ 60.0 $ 129.3 $ 59.1 $ 70.2 Crestwood Permian 37.2 50.6 (14.5 ) 64.4 62.4 5.8 Other (1) 47.1 41.5 5.6 49.6 39.0 10.6 Total $ 205.1 $ 153.2 $ 51.1 $ 243.3 $ 160.5 $ 86.6 (1) Includes our Jackalope (prior to the acquisition of the remaining 50% equity interest from Williams), Tres Holdings and PRBIC equity investments during the nine months ended September 30, 2019 and 2018 . We amortize the excess basis in these equity investments as an increase in our earnings from unconsolidated affiliates. We recorded amortization of the excess basis in our Tres Holdings equity investment of $0.9 million during both the nine months ended September 30, 2019 and 2018 . We recorded amortization of the excess basis in our PRBIC equity investment of $0.3 million and $0.4 million during the nine months ended September 30, 2019 and 2018 . We recorded amortization of the excess basis in the Jackalope equity investment of less than $0.1 million during both the nine months ended September 30, 2019 and 2018 . Distributions and Contributions The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions) : Distributions (1) Contributions Nine Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stagecoach Gas $ 37.2 $ 34.7 $ — $ — Jackalope 11.6 23.2 24.4 17.6 Crestwood Permian 2.9 10.6 21.4 7.6 Tres Holdings 3.5 3.9 6.3 2.5 PRBIC — 1.4 0.2 — Total $ 55.2 $ 73.8 $ 52.3 $ 27.7 (1) In October 2019, we received cash distributions from Stagecoach Gas, Crestwood Permian and Tres Holdings of approximately $15.1 million , $2.1 million and $2.8 million , respectively. Other Contingent Consideration . Pursuant to the Stagecoach Gas limited liability company agreement, we may be required to make payments of up to $57 million to Con Edison Gas Pipeline and Storage Northeast, LLC after December 31, 2020 if certain criteria are not met by Stagecoach Gas by December 31, 2020, including achieving certain performance targets on growth capital projects. These growth capital projects depend on the construction of other third-party expansion projects, and during 2017, those third-party projects experienced regulatory and other delays that caused Stagecoach Gas to delay its growth capital projects. As a result, our consolidated balance sheets reflect an other long-term liability of $57 million at September 30, 2019 and December 31, 2018 . Guarantee. CEQP issued a guarantee under which CEQP has agreed to fund 100% of the costs to build the Nautilus gathering system (which is currently estimated to cost $180 million , of which approximately $175 million has been spent through September 30, 2019 ) if Crestwood Permian fails to do so. The Nautilus gathering system is owned by Crestwood Permian Basin LLC, a 50% equity investment of Crestwood Permian. We do not believe this guarantee is probable of resulting in future losses based on our assessment of the nature of the guarantee, the financial condition of the guaranteed party and the period of time that the guarantee has been outstanding, and as a result, we have not recorded a liability on our consolidated balance sheets at September 30, 2019 and December 31, 2018

Risk Management

Risk Management	9 Months Ended
	Sep. 30, 2019
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 7 . Commodity Derivative Instruments and Price Risk Management Risk Management Activities We sell NGLs (such as propane, ethane, butane and heating oil), crude oil and natural gas to energy-related businesses and may use a variety of financial and other instruments including forward contracts involving physical delivery of NGLs, crude oil and natural gas. 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. Our commodity-based derivatives that are settled with physical commodities are reflected as an increase to product revenues, and the commodity inventory that is utilized to satisfy those physical obligations is reflected as an increase to costs of product sold in our consolidated statements of operations. The following table summarizes the impact to our consolidated statements of operations related to our commodity-based derivatives reflected in operating revenues and costs of product/services sold during the three and nine months ended September 30, 2019 and 2018 ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Product revenues $ 39.1 $ 79.9 $ 183.4 $ 210.7 Gain (loss) reflected in costs of product/services sold $ 14.9 $ (16.7 ) $ 21.9 $ (15.3 ) 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: September 30, 2019 December 31, 2018 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, ethane, butane, heating oil and crude oil (MMBbls) 37.7 41.0 27.8 30.1 Natural gas (Bcf) 4.0 8.8 1.8 1.8 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 39 months or less; however, 84% 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 price risk management activities are 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. In addition, we have margin requirements with a New York Mercantile Exchange (NYMEX) broker related to our net asset or liability position with such broker. 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. The following table presents the fair value of our commodity derivative instruments with credit-risk related contingent features and their associated collateral ( in millions ): September 30, 2019 December 31, 2018 Aggregate fair value of derivative instruments with credit-risk-related contingent features (1) $ 0.8 $ 2.2 NYMEX-related net derivative liability position $ 35.5 $ 9.4 NYMEX-related cash collateral posted $ 52.8 $ 21.7 Cash collateral received, net $ 21.9 $ 14.2 (1) At September 30, 2019 and December 31, 2018 , we posted less than $0.1 million

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The accounting standard for fair value measurement establishes 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, Accounts Receivable and Accounts Payable As of September 30, 2019 and December 31, 2018 , the carrying amounts of cash, accounts receivable and accounts payable approximate fair value based on the short-term nature of these instruments. Credit Facility The fair value of the amounts outstanding under our CMLP credit facility approximates the carrying amounts as of September 30, 2019 and December 31, 2018 , 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 details the carrying amount (reduced for deferred financing costs associated with the respective notes) and fair value of our senior notes ( in millions ): September 30, 2019 December 31, 2018 Carrying Amount Fair Value Carrying Amount Fair Value 2023 Senior Notes $ 694.7 $ 719.1 $ 693.6 $ 668.1 2025 Senior Notes $ 494.2 $ 517.7 $ 493.4 $ 466.2 2027 Senior Notes $ 591.8 $ 613.7 $ — $ — Financial Assets and Liabilities As of September 30, 2019 and December 31, 2018 , 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. Our derivative instruments that are traded on the NYMEX 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 September 30, 2019 and December 31, 2018 ( in millions ): September 30, 2019 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 7.7 $ 222.2 $ — $ 229.9 $ (171.2 ) $ (1.3 ) $ 57.4 Suburban Propane Partners, L.P. units (2) 3.4 — — 3.4 — — 3.4 Total assets at fair value $ 11.1 $ 222.2 $ — $ 233.3 $ (171.2 ) $ (1.3 ) $ 60.8 Liabilities Liabilities from price risk management $ 6.4 $ 201.8 $ — $ 208.2 $ (171.2 ) $ (32.2 ) $ 4.8 Total liabilities at fair value $ 6.4 $ 201.8 $ — $ 208.2 $ (171.2 ) $ (32.2 ) $ 4.8 December 31, 2018 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 12.4 $ 160.7 $ — $ 173.1 $ (140.3 ) $ 1.9 $ 34.7 Suburban Propane Partners, L.P. units (2) 2.8 — — 2.8 — — 2.8 Total assets at fair value $ 15.2 $ 160.7 $ — $ 175.9 $ (140.3 ) $ 1.9 $ 37.5 Liabilities Liabilities from price risk management $ 7.0 $ 144.7 $ — $ 151.7 $ (140.3 ) $ (5.6 ) $ 5.8 Total liabilities at fair value $ 7.0 $ 144.7 $ — $ 151.7 $ (140.3 ) $ (5.6 ) $ 5.8 (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	9 Months Ended
	Sep. 30, 2019
Text Block [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following at September 30, 2019 and December 31, 2018 ( in millions ): September 30, December 31, Credit Facility $ 497.6 $ 578.2 2023 Senior Notes 700.0 700.0 2025 Senior Notes 500.0 500.0 2027 Senior Notes 600.0 — Other 0.6 1.5 Less: deferred financing costs, net 30.8 26.4 Total debt 2,267.4 1,753.3 Less: current portion 0.2 0.9 Total long-term debt, less current portion $ 2,267.2 $ 1,752.4 Credit Facility In April 2019, Crestwood Niobrara acquired the remaining 50% equity interest in Jackalope and funded approximately $250 million of the total purchase price through borrowings under Crestwood Midstream’s credit facility. Contemporaneously with the acquisition of the remaining interest in Jackalope, Crestwood Midstream entered into the First Amendment to the Second Amended and Restated Credit Agreement to modify certain defined terms and calculations, among other things, to account for the Jackalope Acquisition. The other debt covenants under the amended credit agreement are materially consistent with the credit facility that existed at December 31, 2018 . At September 30, 2019 , Crestwood Midstream had $684.7 million of available capacity under its credit facility considering the most restrictive debt covenants in its credit agreement. At September 30, 2019 and December 31, 2018 , Crestwood Midstream’s outstanding standby letters of credit were $67.7 million and $68.0 million . Borrowings under the credit facility accrue interest at prime or Eurodollar based rates plus applicable spreads, which resulted in interest rates between 4.27% and 6.25% at September 30, 2019 and 4.63% and 6.75% at December 31, 2018 . The weighted-average interest rate as of September 30, 2019 and December 31, 2018 was 4.34% and 4.79% . 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 September 30, 2019 , the net debt to consolidated EBITDA ratio was approximately 4.23 to 1.0, the consolidated EBITDA to consolidated interest expense ratio was approximately 4.40 to 1.0, and the senior secured leverage ratio was 0.92 to 1.0. Senior Notes In April 2019, Crestwood Midstream issued $600 million of 5.625% unsecured senior notes due 2027 (the 2027 Senior Notes). The 2027 Senior Notes will mature on May 1, 2027, and interest is payable semiannually in arrears on May 1 and November 1 of each year, beginning November 1, 2019. The net proceeds from this offering of approximately $591.1 million were used to repay a portion of the outstanding borrowings under our credit facility, which included the borrowings that were used to fund the acquisition of the remaining 50% equity interest in Jackalope.

Earnings Per Limited Partner Un

Earnings Per Limited Partner Unit	9 Months Ended
	Sep. 30, 2019
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 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. The following table summarizes information regarding the weighted-average of common units excluded during the three and nine months ended September 30, 2019 and 2018 (in millions) : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Preferred units (1) 7.1 7.1 7.1 7.1 Crestwood Niobrara’s preferred units (1) — 5.1 — 5.1 Stock-based compensation performance units (2) — 0.3 — 0.3 Subordinated units (2) — 0.4 — 0.4 (1) See Note 10 for additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units. (2) For a description of our performance units and subordinated units, see our 2018 Annual Report on Form 10-K. The table below shows CEQP’s net income (loss) per limited partner unit based on the number of basic and diluted limited partner units outstanding for the three and nine months ended September 30, 2019 and 2018 (in millions, except per unit data) : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Common unitholders’ interest in net income (loss) $ 8.6 $ (24.3 ) $ 202.0 $ (49.8 ) Dilutive effect of net income attributable to subordinated units 0.1 — 1.2 — Diluted net income (loss) $ 8.7 $ (24.3 ) $ 203.2 $ (49.8 ) Weighted-average limited partners’ units outstanding - basic 71.8 71.2 71.8 71.2 Dilutive effect of Crestwood Niobrara preferred units 3.0 — 3.9 — Dilutive effect of stock-based compensation performance units 0.3 — 0.3 — Dilutive effect of subordinated units 0.4 — 0.4 — Weighted-average limited partners’ units outstanding - diluted 75.5 71.2 76.4 71.2 Basic earnings per unit: Net income (loss) per limited partner unit $ 0.12 $ (0.34 ) $ 2.81 $ (0.70 ) Diluted earnings per unit: Net income (loss) per limited partner unit $ 0.12 $ (0.34 ) $ 2.66 $ (0.70 )

Partners' Capital

Partners' Capital	9 Months Ended
	Sep. 30, 2019
Statement of Partners' Capital [Abstract]
Partners' Capital	Partners’ Capital Common Units We have an employee unit purchase plan under which employees of the general partner may purchase our common units through payroll deductions up to a maximum of 10% of the employees’ eligible compensation, not to exceed $25,000 for any calendar year. During the three and nine months ended September 30, 2019 , 1,739 and 4,289 common units were purchased under the plan. There were no common units purchased under the plan during the three and nine months ended September 30, 2018 . For a further description of our employee unit purchase plan, see our 2018 Annual Report on Form 10-K. Preferred Units Subject to certain conditions, the holders of the preferred units have the right to convert their preferred units into (i) common units on a 1-for-10 basis or (ii) a number of common units determined pursuant to a conversion ratio set forth in Crestwood Equity’s partnership agreement upon the occurrence of certain events, such as a change in control. The preferred units have voting rights that are identical to the voting rights of the common units and will vote with the common units as a single class, with each preferred unit entitled to one vote for each common unit into which such preferred unit is convertible, except that the preferred units are entitled to vote as a separate class on any matter on which all unitholders are entitled to vote that adversely affects the rights, powers, privileges or preferences of the preferred units in relation to Crestwood Equity’s other securities outstanding. Distributions Crestwood Equity Limited Partners. A summary of CEQP’s limited partner quarterly cash distributions for the nine months ended September 30, 2019 and 2018 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2019 February 7, 2019 February 14, 2019 $ 0.60 $ 43.1 May 8, 2019 May 15, 2019 0.60 43.1 August 7, 2019 August 14, 2019 0.60 43.1 $ 129.3 2018 February 7, 2018 February 14, 2018 $ 0.60 $ 42.7 May 8, 2018 May 15, 2018 0.60 42.7 August 7, 2018 August 14, 2018 0.60 42.7 $ 128.1 On October 17, 2019 , we declared a distribution of $0.60 per limited partner unit to be paid on November 14, 2019 to unitholders of record on November 7, 2019 with respect to the quarter ended September 30, 2019 . Preferred Unit Holders . During the nine months ended September 30, 2019 and 2018 , we made cash distributions to our preferred unitholders of approximately $45.0 million in both periods. On October 17, 2019 , the board of directors of our general partner authorized a cash distribution to our preferred unitholders of approximately $15.0 million for the quarter ended September 30, 2019 . Crestwood Midstream During the nine months ended September 30, 2019 and 2018 , Crestwood Midstream paid cash distributions of $177.3 million and $179.0 million to Crestwood Equity. Non-Controlling Partner Crestwood Niobrara issued preferred interests (Series A-2 Preferred Units) to Jackalope Holdings, which are reflected as non-controlling interest in our consolidated financial statements and included as a component of partners’ capital on our consolidated balance sheet at December 31, 2018. In April 2019, Crestwood Niobrara issued $235 million in new preferred interests (Series A-3 Preferred Units, and collectively with the Series A-2 Preferred Units defined as the Crestwood Niobrara Preferred Units) to Jackalope Holdings in conjunction with Crestwood Niobrara’s acquisition of the remaining 50% equity interest in Jackalope from Williams. In connection with the issuance of the Series A-3 Preferred Units, we entered into a Third Amended and Restated Limited Liability Company Agreement (Crestwood Niobrara Amended Agreement) with Jackalope Holdings, pursuant to which we serve as managing member of Crestwood Niobrara. The Crestwood Niobrara Amended Agreement modified certain provisions under the previous limited liability company agreement related to the conversion and redemption of the Series A-2 Preferred Units, as follows: • The Crestwood Niobrara Preferred Units are convertible by the preferred interest holder starting on January 1, 2021 into Crestwood Niobrara common units. The preferred interest holder has the option to contribute additional capital to Crestwood Niobrara to increase their common ownership percentage in Crestwood Niobrara to 50% upon the conversion. • The Crestwood Niobrara Preferred Units are redeemable by the preferred interest holder starting on December 31, 2023 for an amount equal to the Liquidation Preference (as defined in the Crestwood Niobrara Amended Agreement). If redemption is elected by the preferred interest holder, we have the option to elect to give consideration equal to the Liquidation Preference in either (i) unregistered CEQP common units (subject to a Registration Rights Agreement) with a total value of up to $100 million and/or cash; or (ii) proceeds from a full liquidation of Crestwood Niobrara’s assets and unregistered CEQP common units (subject to a Registration Rights Agreement). • The Crestwood Niobrara Preferred Units are redeemable by us starting on January 1, 2023 for either (i) unregistered CEQP common units (subject to a Registration Rights Agreement) with a total value of up to $100 million and/or cash; or (ii) proceeds from a full liquidation of Crestwood Niobrara’s assets and registered CEQP common units (subject to a Registration Rights Agreement). As a result of the modification of the conversion and redemption provisions of the Crestwood Niobrara Preferred Units, we have reflected these preferred interests as a non-controlling interest in subsidiary apart from partners’ capital on our consolidated balance sheet at September 30, 2019. The following table shows the change in our non-controlling interest in subsidiary at September 30, 2019 (in millions) : Balance at April 9, 2019 (1) $ — Reclassification of Series A-2 Preferred Units 178.8 Issuance of Series A-3 Preferred Units 235.0 Distributions to non-controlling partner (9.2 ) Net income attributable to non-controlling partner (2) 20.5 Balance at September 30, 2019 $ 425.1 (1) For further detail related to our non-controlling interest in subsidiary for the period December 31, 2018 to April 8, 2019, see our consolidated statements of partners’ capital. (2) We adjust the carrying amount of our non-controlling interest to its redemption value each period through net income attributable to non-controlling partner. Crestwood Niobrara makes quarterly cash distributions on its preferred interests within 30 days after the end of each quarter. During the nine months ended September 30, 2019 and 2018 , Crestwood Niobrara paid cash distributions of $15.8 million and $6.6 million to Jackalope Holdings. In October 2019, Crestwood Niobrara paid cash distributions to Jackalope Holdings of $9.2 million for the quarter ended September 30, 2019 . Other In February 2019, Crestwood Equity issued 238,263 performance units under the Crestwood Equity Partners LP Long Term Incentive Plan (Crestwood LTIP). The performance units are designed to provide an incentive for continuous employment to certain key employees. The vesting of performance units is subject to the attainment of certain performance and market goals over a three-year period, and entitle a participant to receive common units of Crestwood Equity without payment of an exercise price upon vesting. As of September 30, 2019 , we had total unamortized compensation expense of approximately $4.9 million related to these performance units, which we expect will be amortized during the next three years. We recognized compensation expense of approximately $0.5 million and $2.4 million under the Crestwood LTIP related to these performance units during the three and nine months ended September 30, 2019

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings 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 September 30, 2019 and December 31, 2018 , both CEQP and CMLP had approximately $0.7 million and $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 our results of operations, cash flows or financial condition. Environmental Compliance Our operations are subject to stringent and complex laws and regulations pertaining to worker health, safety, and the environment. We are subject to laws and regulations at the federal, state, regional 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. 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. Thereafter, we contained and cleaned up the releases, 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. 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. Our discussions regarding the notice of violation continue with the Three Affiliated Tribes. During September 2019, we experienced two produced water releases totaling approximately 5,000 barrels on our Arrow system located on the Fort Berthold Indian Reservation in North Dakota. We immediately notified the National Response Center, the State of North Dakota, the MHA Nation, affected landowners and numerous other regulatory authorities. We are in the process of remediating and monitoring the impact of both spills. 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 September 30, 2019 . At September 30, 2019 and December 31, 2018 , our accrual of approximately $6.5 million and $1.8 million was 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 could range from approximately $6.5 million to $13.4 million at September 30, 2019 . 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. Losses are accrued based upon management’s estimates of the aggregate liability for claims incurred using certain assumptions followed in the insurance industry and based on past experience. The primary assumption utilized is actuarially determined loss development factors. The loss development factors are based primarily on historical data. Our self insurance reserves could be affected if future claim developments differ from the historical trends. We believe changes in health care costs, trends in health care claims of our employee base, accident frequency and severity and other factors could materially affect the estimate for these liabilities. We continually monitor changes in employee demographics, incident and claim type and evaluate our insurance accruals and adjust our accruals based on our evaluation of these qualitative data points. We are liable for the development of claims for our disposed retail propane operations, provided they were reported prior to August 1, 2012. The following table summarizes CEQP’s and CMLP’s self-insurance reserves at September 30, 2019 and December 31, 2018 ( in millions ): CEQP CMLP September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 Self-insurance reserves (1) $ 10.5 $ 11.3 $ 9.4 $ 9.6 (1) At September 30, 2019 , CEQP and CMLP classified approximately $7.4 million and $6.3 million , respectively of these reserves as other long-term liabilities on their consolidated balance sheets. Guarantees and Indemnifications We are involved in various joint ventures that sometimes require financial and performance guarantees. In a financial guarantee, we are obligated to make payments if the guaranteed party fails to make payments under, or violates the terms of, the financial arrangement. In a performance guarantee, we provide assurance that the guaranteed party will execute on the terms of the contract. If they do not, we are required to perform on their behalf. We also periodically provide indemnification arrangements related to assets or businesses we have sold. For a further description of our guarantees associated with our joint ventures, see Note 5 . Our potential exposure under guarantee and indemnification arrangements can range from a specified amount to an unlimited dollar amount, depending on the nature of the claim, specificity as to duration, and the particular transaction. As of September 30, 2019 and December 31, 2018 , we have no amounts accrued for these guarantees.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Crestwood Holdings indirectly owns both CEQP’s and CMLP’s general partner. The affiliates of Crestwood Holdings and its owners are considered CEQP’s and CMLP’s related parties. We enter into transactions with our affiliates within the ordinary course of business, including long-term gas gathering and processing services contracts, product purchases and various operating agreements. We also enter into transactions with our affiliates related to services provided on our expansion projects. For the nine months ended September 30, 2019 and 2018, we paid approximately $6.8 million and $4.7 million of capital expenditures to Applied Consultants, Inc., an affiliate of Crestwood Holdings. The following table shows transactions with our affiliates which are reflected in our consolidated statements of operations ( in millions ). For a further description of our related party agreements, see our 2018 Annual Report on Form 10-K. Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Revenues at CEQP and CMLP $ 0.3 $ 0.3 $ 2.8 $ 0.9 Costs of product/services sold at CEQP and CMLP (1) $ 3.8 $ 45.7 $ 39.1 $ 91.0 Operations and maintenance expenses at CEQP and CMLP (2) $ 6.3 $ 8.2 $ 19.7 $ 22.2 General and administrative expenses charged by CEQP to CMLP, net (3) $ 7.9 $ 4.8 $ 29.0 $ 15.3 General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net (4) $ 0.3 $ (4.0 ) $ (5.0 ) $ (8.8 ) (1) Includes $3.6 million and $12.7 million during the three and nine months ended September 30, 2019 and $16.8 million and $45.1 million during the three and nine months ended September 30, 2018 related to purchases of NGLs from a subsidiary of Crestwood Permian. Includes less than $0.1 million and $23.9 million during the three and nine months ended September 30, 2019 and $28.9 million and $45.9 million during the three and nine months ended September 30, 2018 related to an agency marketing agreement with Ascent Resources - Utica, LLC, an affiliate of Crestwood Holdings. Includes $0.2 million during the both the three and nine months ended September 30, 2019 related to an agreement with Blue Racer Midstream, LLC, an affiliate of Crestwood Holdings. Includes less than $0.1 million and $2.3 million during the three and nine months ended September 30, 2019 related to purchases of natural gas from a subsidiary of Stagecoach Gas. (2) We have operating agreements with certain of our unconsolidated affiliates pursuant to which we charge them operations and maintenance expenses in accordance with their respective agreements, and these charges are reflected as a reduction of operations and maintenance expenses in our consolidated statements of operations. During the three and nine months ended September 30, 2019 , we charged $1.8 million and $5.7 million to Stagecoach Gas, $1.1 million and $3.3 million to Tres Palacios, and $3.4 million and $10.2 million to Crestwood Permian. During the nine months ended September 30, 2019, we charged $0.5 million to Jackalope. During the three and nine months ended September 30, 2018 , we charged $1.8 million and $6.0 million to Stagecoach Gas, $0.9 million and $2.9 million to Tres Palacios, $5.1 million and $12.6 million to Crestwood Permian, and $0.4 million and $0.7 million to Jackalope. (3) Includes $8.9 million and $31.8 million unit-based compensation charges allocated from CEQP to CMLP for the three and nine months ended September 30, 2019 and and $5.6 million and $17.7 million for the three and nine months ended September 30, 2018 . In addition, includes $1.0 million and $2.8 million of CMLP’s general and administrative costs allocated to CEQP during the three and nine months ended September 30, 2019 and and $0.8 million and $2.4 million during the three and nine months ended September 30, 2018 . (4) Includes $0.4 million and $6.1 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three and nine months ended September 30, 2019 and $4.8 million and $10.2 million during the three and nine months ended September 30, 2018 . The following table shows accounts receivable and accounts payable with our affiliates ( in millions ): September 30, December 31, Accounts receivable at CEQP and CMLP $ 7.7 $ 4.1 Accounts payable at CEQP $ 8.1 $ 16.1 Accounts payable at CMLP $ 5.6 $ 13.6

Segments

Segments	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segments	Segments Financial Information We have three operating and reportable segments: (i) gathering and processing operations; (ii) storage and transportation operations; and (iii) marketing, supply and logistics operations. Our corporate operations include all general and administrative expenses that are not allocated to our reportable segments. We assess the performance of our operating segments based on EBITDA, which is defined as income before income taxes, plus interest and debt expense, net and depreciation, amortization and accretion expense. Below is a reconciliation of CEQP’s net income (loss) to EBITDA ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Net income (loss) $ 33.6 $ (5.2 ) $ 272.7 $ 7.4 Add: Interest and debt expense, net 30.6 25.1 83.3 73.8 Provision for income taxes — — 0.3 0.2 Depreciation, amortization and accretion 51.5 39.2 140.6 128.8 EBITDA $ 115.7 $ 59.1 $ 496.9 $ 210.2 Below is a reconciliation of CMLP’s net income (loss) to EBITDA ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Net income (loss) $ 31.2 $ (7.8 ) $ 265.7 $ 1.1 Add: Interest and debt expense, net 30.6 25.1 83.3 73.8 Provision (benefit) for income taxes (0.1 ) — 0.2 0.1 Depreciation, amortization and accretion 55.1 42.7 151.2 137.9 EBITDA $ 116.8 $ 60.0 $ 500.4 $ 212.9 The following tables summarize CEQP’s and CMLP’s reportable segment data for the three and nine months ended September 30, 2019 and 2018 ( in millions ). Intersegment revenues included in the following tables are accounted for as arms-length transactions that apply our revenue recognition policies as described in our 2018 Annual Report on Form 10-K. Included in earnings from unconsolidated affiliates, net below was approximately $9.7 million and $10.8 million of interest expense, depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the three months ended September 30, 2019 and 2018 and $32.7 million and $30.4 million for the nine months ended September 30, 2019 and 2018 . Crestwood Equity Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 257.8 $ 4.1 $ 561.7 $ — $ 823.6 Intersegment revenues 33.6 3.5 (37.1 ) — — Costs of product/services sold 164.1 0.1 493.2 — 657.4 Operations and maintenance expense 27.5 1.1 7.4 — 36.0 General and administrative expense — — — 24.9 24.9 Loss on long-lived assets, net (0.1 ) — — — (0.1 ) Earnings (loss) from unconsolidated affiliates, net (0.5 ) 10.9 — — 10.4 Other income, net — — — 0.1 0.1 EBITDA $ 99.2 $ 17.3 $ 24.0 $ (24.8 ) $ 115.7 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,649.4 $ 987.5 $ 617.3 $ 36.5 $ 5,290.7 Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 242.3 $ 3.5 $ 684.4 $ — $ 930.2 Intersegment revenues 54.8 2.6 (57.4 ) — — Costs of product/services sold 205.1 (0.1 ) 622.5 — 827.5 Operations and maintenance expense 17.2 0.7 11.7 — 29.6 General and administrative expense — — — 25.5 25.5 Gain (loss) on long-lived assets (2.2 ) — (2.5 ) 1.1 (3.6 ) Earnings from unconsolidated affiliates, net 5.6 9.5 — — 15.1 EBITDA $ 78.2 $ 15.0 $ (9.7 ) $ (24.4 ) $ 59.1 Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 639.8 $ 16.8 $ 1,685.6 $ — $ 2,342.2 Intersegment revenues 111.8 10.3 (122.1 ) — — Costs of product/services sold 411.0 0.1 1,479.1 — 1,890.2 Operations and maintenance expense 70.2 3.0 26.1 — 99.3 General and administrative expense — — — 84.4 84.4 Gain (loss) on long-lived assets, net (2.1 ) — (0.2 ) 0.2 (2.1 ) Gain on acquisition 209.4 — — — 209.4 Earnings (loss) from unconsolidated affiliates, net (3.5 ) 24.5 — — 21.0 Other income, net — — — 0.3 0.3 EBITDA $ 474.2 $ 48.5 $ 58.1 $ (83.9 ) $ 496.9 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,649.4 $ 987.5 $ 617.3 $ 36.5 $ 5,290.7 Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 838.1 $ 12.8 $ 2,034.8 $ — $ 2,885.7 Intersegment revenues 141.5 7.1 (148.6 ) — — Costs of product/services sold 701.6 0.1 1,817.0 — 2,518.7 Operations and maintenance expense 52.7 2.3 41.0 — 96.0 General and administrative expense — — — 72.8 72.8 Gain (loss) on long-lived assets (2.1 ) — (26.7 ) 1.1 (27.7 ) Earnings from unconsolidated affiliates, net 15.8 23.7 — — 39.5 Other income, net — — — 0.2 0.2 EBITDA $ 239.0 $ 41.2 $ 1.5 $ (71.5 ) $ 210.2 Crestwood Midstream Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 257.8 $ 4.1 $ 561.7 $ — $ 823.6 Intersegment revenues 33.6 3.5 (37.1 ) — — Costs of product/services sold 164.1 0.1 493.2 — 657.4 Operations and maintenance expense 27.5 1.1 7.4 — 36.0 General and administrative expense — — — 23.7 23.7 Loss on long-lived assets, net (0.1 ) — — — (0.1 ) Earnings (loss) from unconsolidated affiliates, net (0.5 ) 10.9 — — 10.4 EBITDA $ 99.2 $ 17.3 $ 24.0 $ (23.7 ) $ 116.8 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,812.4 $ 987.5 $ 617.3 $ 30.9 $ 5,448.1 Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 242.3 $ 3.5 $ 684.4 $ — $ 930.2 Intersegment revenues 54.8 2.6 (57.4 ) — — Costs of product/services sold 205.1 (0.1 ) 622.5 — 827.5 Operations and maintenance expense 17.2 0.7 11.7 — 29.6 General and administrative expense — — — 24.6 24.6 Gain (loss) on long-lived assets (2.2 ) — (2.5 ) 1.1 (3.6 ) Earnings from unconsolidated affiliates, net 5.6 9.5 — — 15.1 EBITDA $ 78.2 $ 15.0 $ (9.7 ) $ (23.5 ) $ 60.0 Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 639.8 $ 16.8 $ 1,685.6 $ — $ 2,342.2 Intersegment revenues 111.8 10.3 (122.1 ) — — Costs of product/services sold 411.0 0.1 1,479.1 — 1,890.2 Operations and maintenance expense 70.2 3.0 26.1 — 99.3 General and administrative expense — — — 80.6 80.6 Gain (loss) on long-lived assets, net (2.1 ) — (0.2 ) 0.2 (2.1 ) Gain on acquisition 209.4 — — — 209.4 Earnings (loss) from unconsolidated affiliates, net (3.5 ) 24.5 — — 21.0 EBITDA $ 474.2 $ 48.5 $ 58.1 $ (80.4 ) $ 500.4 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,812.4 $ 987.5 $ 617.3 $ 30.9 $ 5,448.1 Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 838.1 $ 12.8 $ 2,034.8 $ — $ 2,885.7 Intersegment revenues 141.5 7.1 (148.6 ) — — Costs of product/services sold 701.6 0.1 1,817.0 — 2,518.7 Operations and maintenance expense 52.7 2.3 41.0 — 96.0 General and administrative expense — — — 69.9 69.9 Gain (loss) on long-lived assets (2.1 ) — (26.7 ) 1.1 (27.7 ) Earnings from unconsolidated affiliates, net 15.8 23.7 — — 39.5 EBITDA $ 239.0 $ 41.2 $ 1.5 $ (68.8 ) $ 212.9

Revenue Recognition Revenue Rec

Revenue Recognition Revenue Recognition	9 Months Ended
	Sep. 30, 2019
Revenue Recognition [Abstract]
Revenue Recognition	Revenues Contract Assets and Contract Liabilities Our contract assets and contract liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. Our receivables related to our revenue contracts accounted for under ASU 2014-09, Revenue from Contracts with Customers (Topic 606) totaled $243.5 million and $209.7 million for both CEQP and CMLP at September 30, 2019 and December 31, 2018 , and are included in accounts receivable on our consolidated balance sheets. Our contract assets are included in other non-current assets on our consolidated balance sheets. Our contract liabilities primarily consist of current and non-current deferred revenues. On our consolidated balance sheets, our current deferred revenues are included in accrued expenses and other liabilities and our non-current deferred revenues are included in other long-term liabilities. The majority of revenues associated with our deferred revenues is expected to be recognized as the performance obligations under the related contracts are satisfied over the next 17 years . The following table provides a summary of the opening and closing balances of our contract assets and contract liabilities (in millions) : September 30, 2019 December 31, 2018 Contract Assets (Non-current) $ 0.8 $ 1.0 Contract Liabilities (Current) (1) $ 10.3 $ 12.0 Contract Liabilities (Non-current) (1) $ 112.8 $ 65.4 (1) During the three and nine months ended September 30, 2019 , we recognized revenues of approximately $2.6 million and $8.4 million that were previously included in contract liabilities (current) at December 31, 2018 . The remaining change in our contract liabilities during the three and nine months ended September 30, 2019 , partially related to approximately $21.5 million of deferred revenues recorded in the purchase price allocation for the Jackalope Acquisition described in more detail in Note 3, and the remainder relates primarily to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates. The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of September 30, 2019 (in millions) : Remainder of 2019 $ 25.1 2020 97.7 2021 86.1 2022 79.2 2023 7.3 Thereafter 3.3 Total $ 298.7 Our remaining performance obligations presented in the table above exclude estimates of variable rate escalation clauses in our contracts with customers, and is generally limited to fixed-fee and percentage-of-proceeds service contracts which have fixed pricing and minimum volume terms and conditions. Our remaining performance obligations generally exclude, based on the following practical expedients that we elected to apply, disclosures for (i) variable consideration allocated to a wholly- unsatisfied promise to transfer a distinct service that forms part of the identified single performance obligation; (ii) unsatisfied performance obligations where the contract term is one year or less; and (iii) contracts for which we recognize revenues as amounts are invoiced. Disaggregation of Revenues The following tables summarize our revenues from contracts with customers disaggregated by type of product/service sold and by commodity type for each of our segments for the three and nine months ended September 30, 2019 and 2018 ( in millions ). We believe this summary best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors. Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 43.7 $ — $ — $ — $ 43.7 Crude oil 20.1 — — — 20.1 Water 21.3 — — — 21.3 Processing Natural gas 8.9 — — — 8.9 Compression Natural gas 6.4 — — — 6.4 Storage Crude oil 0.4 1.5 — (0.5 ) 1.4 NGLs — — 1.6 — 1.6 Pipeline Crude oil — 2.6 — (1.0 ) 1.6 Transportation Crude oil 2.2 — 1.4 (0.1 ) 3.5 NGLs — — 2.3 — 2.3 Rail Loading Crude oil — 2.4 — (1.2 ) 1.2 Product Sales Natural gas 10.3 — 13.8 (6.5 ) 17.6 Crude oil 170.0 — 383.6 (24.1 ) 529.5 NGLs 8.1 — 119.2 (2.8 ) 124.5 Other — 1.1 0.4 (0.9 ) 0.6 Total Topic 606 revenues 291.4 7.6 522.3 (37.1 ) 784.2 Non-Topic 606 revenues (1) — — 39.4 — 39.4 Total revenues $ 291.4 $ 7.6 $ 561.7 $ (37.1 ) $ 823.6 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 32.9 $ — $ — $ — $ 32.9 Crude oil 9.4 — — — 9.4 Water 15.5 — — — 15.5 Processing Natural gas 2.7 — — — 2.7 NGLs — — 2.0 — 2.0 Compression Natural gas 7.0 — — — 7.0 Storage Crude oil 0.4 0.8 — (0.4 ) 0.8 NGLs — — 1.9 — 1.9 Pipeline Crude oil — 2.1 — (0.6 ) 1.5 Transportation Crude oil 0.9 — 1.5 — 2.4 NGLs — — 6.6 — 6.6 Rail Loading Crude oil — 2.8 — (1.3 ) 1.5 NGLs — — 0.9 — 0.9 Product Sales Natural gas 13.4 — 31.7 (3.9 ) 41.2 Crude oil 190.3 — 268.8 (43.1 ) 416.0 NGLs 24.6 — 291.1 (7.8 ) 307.9 Other — 0.4 — (0.3 ) 0.1 Total Topic 606 revenues 297.1 6.1 604.5 (57.4 ) 850.3 Non-Topic 606 revenues (1) — — 79.9 — 79.9 Total revenues $ 297.1 $ 6.1 $ 684.4 $ (57.4 ) $ 930.2 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 116.8 $ — $ — $ — $ 116.8 Crude oil 50.5 — — — 50.5 Water 57.1 — — — 57.1 Processing Natural gas 19.5 — — — 19.5 Compression Natural gas 18.6 — — — 18.6 Storage Crude oil 1.4 4.4 — (1.7 ) 4.1 NGLs — — 4.2 — 4.2 Pipeline Crude oil — 5.8 — (2.2 ) 3.6 Transportation Crude oil 5.5 — 4.4 (0.1 ) 9.8 NGLs — — 8.5 — 8.5 Rail Loading Crude oil — 13.5 — (4.0 ) 9.5 Product Sales Natural gas 40.0 — 44.0 (17.9 ) 66.1 Crude oil 411.8 — 965.1 (83.4 ) 1,293.5 NGLs 30.4 — 474.6 (10.1 ) 494.9 Other — 3.4 0.7 (2.7 ) 1.4 Total Topic 606 revenues 751.6 27.1 1,501.5 (122.1 ) 2,158.1 Non-Topic 606 revenues (1) — — 184.1 — 184.1 Total revenues $ 751.6 $ 27.1 $ 1,685.6 $ (122.1 ) $ 2,342.2 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 102.2 $ — $ — $ — $ 102.2 Crude oil 28.0 — — — 28.0 Water 41.3 — — — 41.3 Processing Natural gas 8.1 — — — 8.1 NGLs — — 6.1 — 6.1 Compression Natural gas 22.5 — — — 22.5 Storage Crude oil 1.3 2.6 — (0.9 ) 3.0 NGLs — — 7.4 — 7.4 Pipeline Crude oil — 4.7 — (1.6 ) 3.1 Transportation Crude oil 2.1 — 4.4 — 6.5 NGLs — — 26.0 — 26.0 Water — — 0.2 — 0.2 Rail Loading Crude oil — 11.5 — (3.8 ) 7.7 NGLs — — 3.1 — 3.1 Product Sales Natural gas 38.7 — 48.4 (10.6 ) 76.5 Crude oil 667.9 — 725.4 (112.4 ) 1280.9 NGLs 67.5 — 1003.1 (18.5 ) 1052.1 Other — 1.1 — (0.8 ) 0.3 Total Topic 606 revenues 979.6 19.9 1,824.1 (148.6 ) 2,675.0 Non-Topic 606 revenues (1) — — 210.7 — 210.7 Total revenues $ 979.6 $ 19.9 $ 2,034.8 $ (148.6 ) $ 2,885.7 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	9 Months Ended
	Sep. 30, 2019
Condensed Financial Information 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 Infrastructure, Crestwood Niobrara, Crestwood Pipeline and Storage Northeast LLC, PRBIC and Tres Holdings and their respective subsidiaries (collectively, Non-Guarantor Subsidiaries). Crestwood Midstream Finance Corp., the co-issuer of the 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 September 30, 2019 and December 31, 2018 , and for the three and nine months ended September 30, 2019 and 2018 . 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 September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.5 $ — $ 0.4 $ — $ 0.9 Accounts receivable — 233.6 24.4 — 258.0 Inventory — 43.5 — — 43.5 Other current assets — 65.5 0.3 — 65.8 Total current assets 0.5 342.6 25.1 — 368.2 Property, plant and equipment, net — 2,323.1 677.8 — 3,000.9 Goodwill and intangible assets, net — 661.1 377.7 — 1,038.8 Operating lease right-of-use assets, net — 55.7 2.9 — 58.6 Investment in consolidated affiliates 4,439.5 — — (4,439.5 ) — Investment in unconsolidated affiliates — — 979.6 — 979.6 Other non-current assets — 2.0 — — 2.0 Total assets $ 4,440.0 $ 3,384.5 $ 2,063.1 $ (4,439.5 ) $ 5,448.1 Liabilities and capital Current liabilities: Accounts payable $ — $ 175.7 $ 20.1 $ — $ 195.8 Other current liabilities 54.0 112.0 7.1 — 173.1 Total current liabilities 54.0 287.7 27.2 — 368.9 Long-term liabilities: Long-term debt, less current portion 2,267.2 — — — 2,267.2 Other long-term liabilities — 173.6 93.8 — 267.4 Deferred income taxes — 0.7 — — 0.7 Total liabilities 2,321.2 462.0 121.0 — 2,904.2 Interest of non-controlling partner in subsidiary — — 425.1 — 425.1 Partners’ capital 2,118.8 2,922.5 1,517.0 (4,439.5 ) 2,118.8 Total liabilities and capital $ 4,440.0 $ 3,384.5 $ 2,063.1 $ (4,439.5 ) $ 5,448.1 Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet December 31, 2018 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.2 $ — $ — $ — $ 0.2 Restricted cash 16.3 — — — 16.3 Accounts receivable — 246.3 19.9 (16.3 ) 249.9 Inventory — 64.6 — — 64.6 Other current assets — 46.0 — — 46.0 Total current assets 16.5 356.9 19.9 (16.3 ) 377.0 Property, plant and equipment, net — 2,202.3 — — 2,202.3 Goodwill and intangible assets, net — 692.4 — — 692.4 Investment in consolidated affiliates 3,800.4 — — (3,800.4 ) — Investment in unconsolidated affiliates — — 1,188.2 — 1,188.2 Other non-current assets — 2.1 — — 2.1 Total assets $ 3,816.9 $ 3,253.7 $ 1,208.1 $ (3,816.7 ) $ 4,462.0 Liabilities and capital Current liabilities: Accounts payable $ 16.3 $ 210.5 $ — $ (16.3 ) $ 210.5 Other current liabilities 20.0 81.8 16.2 — 118.0 Total current liabilities 36.3 292.3 16.2 (16.3 ) 328.5 Long-term liabilities: Long-term debt, less current portion 1,752.4 — — — 1,752.4 Other long-term liabilities — 114.0 57.0 — 171.0 Deferred income taxes — 0.6 — — 0.6 Total liabilities 1,788.7 406.9 73.2 (16.3 ) 2,252.5 Interest of non-controlling partner in subsidiary — — 181.3 — 181.3 Partners’ capital 2,028.2 2,846.8 953.6 (3,800.4 ) 2,028.2 Total partners’ capital 2,028.2 2,846.8 1,134.9 (3,800.4 ) 2,209.5 Total liabilities and capital $ 3,816.9 $ 3,253.7 $ 1,208.1 $ (3,816.7 ) $ 4,462.0 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 801.1 $ 23.2 $ (0.7 ) $ 823.6 Costs of product/services sold — 657.4 0.7 (0.7 ) 657.4 Operating expenses and other: Operations and maintenance — 30.8 5.2 — 36.0 General and administrative 10.7 13.0 — — 23.7 Depreciation, amortization and accretion — 45.5 9.6 — 55.1 Loss on long-lived assets, net — 0.1 — — 0.1 10.7 89.4 14.8 — 114.9 Operating income (loss) (10.7 ) 54.3 7.7 — 51.3 Earnings from unconsolidated affiliates, net — — 10.4 — 10.4 Interest and debt income (expense), net (30.7 ) — 0.1 — (30.6 ) Equity in net income (loss) of subsidiaries 62.7 — — (62.7 ) — Income (loss) before income taxes 21.3 54.3 18.2 (62.7 ) 31.1 Benefit for income taxes — 0.1 — — 0.1 Net income (loss) 21.3 54.4 18.2 (62.7 ) 31.2 Net income attributable to non-controlling partner in subsidiary — — 9.9 — 9.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ 21.3 $ 54.4 $ 8.3 $ (62.7 ) $ 21.3 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 930.2 $ — $ — $ 930.2 Costs of product/services sold — 827.5 — — 827.5 Operating expenses: Operations and maintenance — 29.6 — — 29.6 General and administrative 14.3 10.3 — — 24.6 Depreciation, amortization and accretion — 42.7 — — 42.7 Loss on long-lived assets, net — 3.6 — — 3.6 14.3 86.2 — — 100.5 Operating income (loss) (14.3 ) 16.5 — — 2.2 Earnings from unconsolidated affiliates, net — — 15.1 — 15.1 Interest and debt expense, net (25.1 ) — — — (25.1 ) Equity in net income (loss) of subsidiaries 27.5 — — (27.5 ) — Net income (loss) (11.9 ) 16.5 15.1 (27.5 ) (7.8 ) Net income attributable to non-controlling partner in subsidiary — — 4.1 — 4.1 Net income (loss) attributable to Crestwood Midstream Partners LP $ (11.9 ) $ 16.5 $ 11.0 $ (27.5 ) $ (11.9 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Nine Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 2,299.5 $ 43.4 $ (0.7 ) $ 2,342.2 Costs of product/services sold — 1,890.2 0.7 (0.7 ) 1,890.2 Operating expenses and other: Operations and maintenance — 86.9 12.4 — 99.3 General and administrative 39.1 41.5 — — 80.6 Depreciation, amortization and accretion — 131.9 19.3 — 151.2 Loss on long-lived assets, net — 2.1 — — 2.1 Gain on acquisition — — (209.4 ) — (209.4 ) 39.1 262.4 (177.7 ) — 123.8 Operating income (loss) (39.1 ) 146.9 220.4 — 328.2 Earnings from unconsolidated affiliates, net — — 21.0 — 21.0 Interest and debt income (expense), net (83.4 ) — 0.1 — (83.3 ) Equity in net income (loss) of subsidiaries 363.7 — — (363.7 ) — Income (loss) before income taxes 241.2 146.9 241.5 (363.7 ) 265.9 Provision for income taxes — (0.2 ) — — (0.2 ) Net income (loss) 241.2 146.7 241.5 (363.7 ) 265.7 Net income attributable to non-controlling partner in subsidiary — — 24.5 — 24.5 Net income (loss) attributable to Crestwood Midstream Partners LP $ 241.2 $ 146.7 $ 217.0 $ (363.7 ) $ 241.2 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Nine Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 2,885.7 $ — $ — $ 2,885.7 Costs of product/services sold — 2,518.7 — — 2,518.7 Operating expenses: Operations and maintenance — 96.0 — — 96.0 General and administrative 42.0 27.9 — — 69.9 Depreciation, amortization and accretion — 137.9 — — 137.9 Loss on long-lived assets, net — 27.7 — — 27.7 42.0 289.5 — — 331.5 Operating income (loss) (42.0 ) 77.5 — — 35.5 Earnings from unconsolidated affiliates, net — — 39.5 — 39.5 Interest and debt expense, net (73.8 ) — — — (73.8 ) Equity in net income (loss) of subsidiaries 104.8 — — (104.8 ) — Income (loss) before income taxes (11.0 ) 77.5 39.5 (104.8 ) 1.2 Provision for income taxes — (0.1 ) — — (0.1 ) Net income (loss) (11.0 ) 77.4 39.5 (104.8 ) 1.1 Net income attributable to non-controlling partner in subsidiary — — 12.1 — 12.1 Net income (loss) attributable to Crestwood Midstream Partners LP $ (11.0 ) $ 77.4 $ 27.4 $ (104.8 ) $ (11.0 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities $ (100.2 ) $ 322.1 $ 59.1 $ — $ 281.0 Cash flows from investing activities: Acquisition, net of cash acquired — — (462.1 ) — (462.1 ) Purchases of property, plant and equipment — (209.6 ) (137.4 ) — (347.0 ) Investment in unconsolidated affiliates — — (52.3 ) — (52.3 ) Capital distributions from unconsolidated affiliates — — 27.3 — 27.3 Capital contributions to consolidated affiliates (239.6 ) — — 239.6 — Other — (0.4 ) — — (0.4 ) Net cash provided by (used in) investing activities (239.6 ) (210.0 ) (624.5 ) 239.6 (834.5 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,993.7 — — — 1,993.7 Payments on long-term debt (1,474.3 ) (0.9 ) — — (1,475.2 ) Payments on finance leases — (2.6 ) — — (2.6 ) Payments for debt-related deferred costs (9.0 ) — — — (9.0 ) Net proceeds from the issuance of non-controlling interest — — 235.0 — 235.0 Distributions to partners (177.3 ) — (15.8 ) — (193.1 ) Contributions from parent — — 239.6 (239.6 ) — Taxes paid for unit-based compensation vesting — (10.9 ) — — (10.9 ) Change in intercompany balances (9.3 ) (97.7 ) 107.0 — — Net cash provided by (used in) financing activities 323.8 (112.1 ) 565.8 (239.6 ) 537.9 Net change in cash and restricted cash (16.0 ) — 0.4 — (15.6 ) Cash and restricted cash at beginning of period 16.5 — — — 16.5 Cash and restricted cash at end of period $ 0.5 $ — $ 0.4 $ — $ 0.9 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (92.1 ) $ 262.1 $ 36.4 $ — $ 206.4 Cash flows from investing activities: Purchases of property, plant and equipment (3.7 ) (202.0 ) — — (205.7 ) Investment in unconsolidated affiliates — — (27.7 ) — (27.7 ) Capital distributions from unconsolidated affiliates — — 34.6 — 34.6 Net proceeds from sale of assets — 8.6 — — 8.6 Capital distributions from consolidated affiliates 36.7 — — (36.7 ) — Net cash provided by (used in) investing activities 33.0 (193.4 ) 6.9 (36.7 ) (190.2 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,152.1 — — — 1,152.1 Payments on long-term debt (972.8 ) (0.9 ) — — (973.7 ) Payments on capital leases — (1.1 ) — — (1.1 ) Distributions to partners (179.0 ) — (6.6 ) — (185.6 ) Distributions to parent — — (36.7 ) 36.7 — Taxes paid for unit-based compensation vesting — (6.9 ) — — (6.9 ) Change in intercompany balances 59.8 (59.8 ) — — — Net cash provided by (used in) financing activities 60.1 (68.7 ) (43.3 ) 36.7 (15.2 ) Net change in cash and restricted cash 1.0 — — — 1.0 Cash and restricted cash at beginning of period 1.0 — — — 1.0 Cash and restricted cash at end of period $ 2.0 $ — $ — $ — $ 2.0

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Effective January 1, 2019, we adopted the following accounting standard. There were no other material changes in our significant accounting policies from those described in our 2018 Annual Report on Form10-K.
New Accounting Pronouncements Issued But Not Yet Adopted	New Accounting Pronouncement Issued But Not Yet Adopted As of September 30, 2019 , the following accounting standard had not yet been adopted by us: In June 2016, the Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326) , which provides guidance on how companies should evaluate their accounts and notes receivable and other financial instruments for impairment. The standard requires companies to evaluate their financial instruments for impairment by recording an allowance for doubtful accounts and/or bad debt expense based on certain categories of instruments rather than a specific identification approach. We will adopt the provisions of this standard effective January 1, 2020 and are currently evaluating the impact that this standard may have on our consolidated financial statements.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Assets And Liabilities, Lessee [Table Text Block]	The following table summarizes the balance sheet information related to our operating and finance leases at September 30, 2019 ( in millions ): Operating Leases Operating lease right-of-use assets, net $ 58.6 Accrued expenses and other liabilities $ 18.5 Long-term operating lease liabilities 45.6 Total operating lease liabilities $ 64.1 Finance Leases Property, plant and equipment $ 14.7 Less: accumulated depreciation 4.5 Property, plant and equipment, net $ 10.2 Accrued expenses and other liabilities $ 3.1 Other long-term liabilities 5.9 Total finance lease liabilities $ 9.0
Lease, Cost [Table Text Block]	The following table presents the costs and sublease income associated with our operating and finance leases for the three and nine months ended September 30, 2019 ( in millions ): Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating leases: Operating lease expense (1)(2) $ 6.5 $ 21.5 Sublease income (3) (0.3 ) (0.7 ) Total operating lease expense, net $ 6.2 $ 20.8 Finance leases: Amortization of right-of-use assets (4) $ 0.9 $ 2.7 Interest on lease liabilities (5) 0.1 0.5 Total finance lease expense $ 1.0 $ 3.2 (1) Approximately $3.8 million and $13.3 million is included in costs of product/services sold on our consolidated statements of operations for the three and nine months ended September 30, 2019 , and $2.7 million and $8.2 million is included in operations and maintenance expense on our consolidated statements of operations for the three and nine months ended September 30, 2019 . (2) Includes short-term and variable lease costs of approximately $0.7 million and $2.7 million for the three and nine months ended September 30, 2019 . (3) Included in marketing, supply and logistics service revenues on our consolidated statements of operations. (4) Included in depreciation, amortization and accretion expense on our consolidated statements of operations. (5) Included in interest and debt expense, net on our consolidated statements of operations. The following table presents supplemental cash flow information for our operating and finance leases for the nine months ended September 30, 2019 ( in millions ): Cash paid for lease liabilities: Operating cash flows from operating leases $ 17.5 Operating cash flows from finance leases $ 0.5 Financing cash flows from finance leases $ 2.6 Right-of-use assets obtained in exchange for lease obligations: Operating leases (1) $ 4.2 Finance leases $ 1.7 The following table presents the weighted-average remaining lease term and the weighted-average discount rate associated with our operating and finance leases as of September 30, 2019 : Weighted-average remaining lease term (in years) : Operating leases 4.4 Finance leases 2.8 Weighted-average discount rate: Operating leases 5.9 % Finance leases 7.3 %
Finance Lease, Liability, Maturity [Table Text Block]	The following table presents the future minimum lease liabilities under Topic 842 and Topic 840 for our leases for the next five years and in total thereafter ( in millions ): Topic 842 Topic 840 September 30, 2019 December 31, 2018 Year Ending December 31, Operating Leases Finance Leases Total Operating Leases Capital Leases Total 2019 (1) $ 5.4 $ 0.9 $ 6.3 $ 22.3 $ 3.0 $ 25.3 2020 20.8 3.6 24.4 18.1 3.3 21.4 2021 16.3 3.5 19.8 14.4 3.2 17.6 2022 11.1 1.9 13.0 9.7 1.9 11.6 2023 6.7 0.1 6.8 6.0 — 6.0 Thereafter 13.6 — 13.6 10.7 — 10.7 Total lease payments 73.9 10.0 83.9 81.2 11.4 92.6 Less: Interest 9.8 1.0 10.8 — 1.3 1.3 Present value of lease liabilities $ 64.1 $ 9.0 $ 73.1 $ 81.2 $ 10.1 $ 91.3 (1) Represents the remainder of 2019 at September 30, 2019 .
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The following table presents the future minimum lease liabilities under Topic 842 and Topic 840 for our leases for the next five years and in total thereafter ( in millions ): Topic 842 Topic 840 September 30, 2019 December 31, 2018 Year Ending December 31, Operating Leases Finance Leases Total Operating Leases Capital Leases Total 2019 (1) $ 5.4 $ 0.9 $ 6.3 $ 22.3 $ 3.0 $ 25.3 2020 20.8 3.6 24.4 18.1 3.3 21.4 2021 16.3 3.5 19.8 14.4 3.2 17.6 2022 11.1 1.9 13.0 9.7 1.9 11.6 2023 6.7 0.1 6.8 6.0 — 6.0 Thereafter 13.6 — 13.6 10.7 — 10.7 Total lease payments 73.9 10.0 83.9 81.2 11.4 92.6 Less: Interest 9.8 1.0 10.8 — 1.3 1.3 Present value of lease liabilities $ 64.1 $ 9.0 $ 73.1 $ 81.2 $ 10.1 $ 91.3 (1) Represents the remainder of 2019 at September 30, 2019 .

Acquisition and Divestiture (Ta

Acquisition and Divestiture (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the acquisition date (in millions ): Cash $ 22.5 Other current assets 30.9 Property, plant and equipment 532.9 Intangible assets 306.0 Goodwill 80.3 Current liabilities (30.4 ) Other long-term liabilities (21.5 ) Estimated fair value of 100% interest in Jackalope 920.7 Less: Elimination of equity investment in Jackalope 226.7 Gain on acquisition of Jackalope 209.4 Total purchase price $ 484.6
Business Acquisition, Pro Forma Information [Table Text Block]	The tables below presents selected unaudited pro forma information as if the Jackalope Acquisition had occurred on January 1, 2018 (in millions) . The pro forma information is not necessarily indicative of the financial results that would have occurred if the transaction had been completed as of the dates indicated. The amounts have been calculated after applying our accounting policies and adjusting the results to reflect the depreciation, amortization and accretion expense that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been made at the beginning of the respective reporting period. The pro forma net income also includes the effects of interest expense on incremental borrowings and recognition of deferred revenue. Crestwood Equity Three Months Ended Nine Months Ended September 30, September 30, 2018 2019 2018 Revenues $ 949.5 $ 2,362.9 $ 2,936.8 Net income (loss) $ (10.5 ) $ 266.3 $ (10.8 ) Crestwood Midstream Three Months Ended Nine Months Ended September 30, September 30, 2018 2019 2018 Revenues $ 949.5 $ 2,362.9 $ 2,936.8 Net income (loss) $ (13.1 ) $ 259.3 $ (17.1 )

Certain Balance Sheet Informa_2

Certain Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2019
Balance Sheet Related Disclosures [Abstract]
Schedule of Accrued Liabilities	Accrued expenses and other liabilities consisted of the following ( in millions ): CEQP CMLP September 30, December 31, September 30, December 31, 2019 2018 2019 2018 Accrued expenses (1) $ 57.0 $ 64.8 $ 56.1 $ 63.7 Accrued property taxes 6.0 2.6 6.0 2.6 Income tax payable 0.2 0.3 0.2 0.3 Interest payable 53.8 19.8 53.8 19.8 Accrued additions to property, plant and equipment 20.1 10.5 20.1 10.5 Operating leases 18.5 — 18.5 — Finance leases 3.1 2.4 3.1 2.4 Deferred revenue 10.3 12.0 10.3 12.0 Total accrued expenses and other liabilities $ 169.0 $ 112.4 $ 168.1 $ 111.3 (1) Includes $16.2 million of related party accrued expenses at December 31, 2018 related to deposits received from Jackalope prior to the acquisition of the remaining 50%

Investments in Unconsolidated_2

Investments in Unconsolidated Affiliates (Tables)	9 Months Ended
	Sep. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Distributions and Contributions The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions) : Distributions (1) Contributions Nine Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stagecoach Gas $ 37.2 $ 34.7 $ — $ — Jackalope 11.6 23.2 24.4 17.6 Crestwood Permian 2.9 10.6 21.4 7.6 Tres Holdings 3.5 3.9 6.3 2.5 PRBIC — 1.4 0.2 — Total $ 55.2 $ 73.8 $ 52.3 $ 27.7 (1) In October 2019, we received cash distributions from Stagecoach Gas, Crestwood Permian and Tres Holdings of approximately $15.1 million , $2.1 million and $2.8 million , respectively. Summarized Financial Information of Unconsolidated Affiliates Below is the summarized operating results for our significant unconsolidated affiliates ( in millions; amounts represent 100% of unconsolidated affiliate information ): Nine Months Ended September 30, 2019 2018 Operating Revenues Operating Expenses Net Income (Loss) Operating Revenues Operating Expenses Net Income Stagecoach Gas $ 120.8 $ 61.1 $ 60.0 $ 129.3 $ 59.1 $ 70.2 Crestwood Permian 37.2 50.6 (14.5 ) 64.4 62.4 5.8 Other (1) 47.1 41.5 5.6 49.6 39.0 10.6 Total $ 205.1 $ 153.2 $ 51.1 $ 243.3 $ 160.5 $ 86.6 (1) Includes our Jackalope (prior to the acquisition of the remaining 50% equity interest from Williams), Tres Holdings and PRBIC equity investments during the nine months ended September 30, 2019 and 2018 . We amortize the excess basis in these equity investments as an increase in our earnings from unconsolidated affiliates. We recorded amortization of the excess basis in our Tres Holdings equity investment of $0.9 million during both the nine months ended September 30, 2019 and 2018 . We recorded amortization of the excess basis in our PRBIC equity investment of $0.3 million and $0.4 million during the nine months ended September 30, 2019 and 2018 . We recorded amortization of the excess basis in the Jackalope equity investment of less than $0.1 million during both the nine months ended September 30, 2019 and 2018 . Net Investments and Earnings Our net investments in and earnings from our unconsolidated affiliates are as follows ( in millions ): Investment Earnings (Loss) from Unconsolidated Affiliates September 30, December 31, Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 2019 2018 Stagecoach Gas Services LLC (1) $ 817.1 $ 830.4 $ 10.5 $ 8.8 $ 23.9 $ 21.5 Jackalope Gas Gathering Services, L.L.C. (2) — 210.2 — 4.5 3.7 11.3 Crestwood Permian Basin Holdings LLC (3) 115.6 104.3 (0.5 ) 1.1 (7.2 ) 4.5 Tres Palacios Holdings LLC (4) 38.6 35.0 0.5 0.1 0.8 0.5 Powder River Basin Industrial Complex, LLC (5) 8.3 8.3 (0.1 ) 0.6 (0.2 ) 1.7 Total $ 979.6 $ 1,188.2 $ 10.4 $ 15.1 $ 21.0 $ 39.5 (1) As of September 30, 2019 , our equity in the underlying net assets of Stagecoach Gas Services LLC (Stagecoach Gas) exceeded our investment balance by approximately $51.3 million . This excess amount is entirely attributable to goodwill and, as such, is not subject to amortization. Pursuant to the Stagecoach limited liability company agreement, our share of Stagecoach’s equity earnings increased from 40% to 50% effective July 1, 2019. Our Stagecoach Gas investment is included in our storage and transportation segment. (2) On April 9, 2019, Crestwood Niobrara acquired Williams’ 50% equity interest in Jackalope, and as a result, Crestwood Niobrara controls and owns 100% of the equity interests in Jackalope. As a result of this transaction, we eliminated our historical equity investment in Jackalope of approximately $226.7 million as of April 9, 2019 and began consolidating Jackalope’s operations. Our Jackalope investment was included in our gathering and processing segment. For a further discussion of Crestwood Niobrara’s acquisition of the remaining 50% equity interest in Jackalope, see Note 3. (3) As of September 30, 2019 , the difference of $10.6 million between our equity in Crestwood Permian’s net assets and our investment balance is not subject to amortization. Pursuant to the Crestwood Permian limited liability company agreement, we were allocated 100% of Crestwood New Mexico Pipeline LLC’s (Crestwood New Mexico) earnings through June 30, 2018. Effective July 1, 2018, our equity earnings from Crestwood New Mexico is based on our ownership percentage of Crestwood Permian, which is currently 50% . Our Crestwood Permian investment is included in our gathering and processing segment. (4) As of September 30, 2019 , our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded our investment balance by approximately $24.4 million . Our Tres Holdings investment is included in our storage and transportation segment. (5) As of September 30, 2019 , our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) exceeded our investment balance by approximately $5.6 million . Our PRBIC investment is included in our storage and transportation segment.

Risk Management (Tables)

Risk Management (Tables)	9 Months Ended
	Sep. 30, 2019
Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]
Derivatives Not Designated as Hedging Instruments [Table Text Block]	The following table summarizes the impact to our consolidated statements of operations related to our commodity-based derivatives reflected in operating revenues and costs of product/services sold during the three and nine months ended September 30, 2019 and 2018 ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Product revenues $ 39.1 $ 79.9 $ 183.4 $ 210.7 Gain (loss) reflected in costs of product/services sold $ 14.9 $ (16.7 ) $ 21.9 $ (15.3 )
Notional Amounts And Terms Of Company's Derivative Financial Instruments	The notional amounts and terms of our derivative financial instruments include the following: September 30, 2019 December 31, 2018 Fixed Price Payor Fixed Price Receiver Fixed Price Payor Fixed Price Receiver Propane, ethane, butane, heating oil and crude oil (MMBbls) 37.7 41.0 27.8 30.1 Natural gas (Bcf) 4.0 8.8 1.8 1.8
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The following table presents the fair value of our commodity derivative instruments with credit-risk related contingent features and their associated collateral ( in millions ): September 30, 2019 December 31, 2018 Aggregate fair value of derivative instruments with credit-risk-related contingent features (1) $ 0.8 $ 2.2 NYMEX-related net derivative liability position $ 35.5 $ 9.4 NYMEX-related cash collateral posted $ 52.8 $ 21.7 Cash collateral received, net $ 21.9 $ 14.2 (1) At September 30, 2019 and December 31, 2018 , we posted less than $0.1 million of collateral associated with these derivatives.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [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 details the carrying amount (reduced for deferred financing costs associated with the respective notes) and fair value of our senior notes ( in millions ): September 30, 2019 December 31, 2018 Carrying Amount Fair Value Carrying Amount Fair Value 2023 Senior Notes $ 694.7 $ 719.1 $ 693.6 $ 668.1 2025 Senior Notes $ 494.2 $ 517.7 $ 493.4 $ 466.2 2027 Senior Notes $ 591.8 $ 613.7 $ — $ —
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 September 30, 2019 and December 31, 2018 ( in millions ): September 30, 2019 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 7.7 $ 222.2 $ — $ 229.9 $ (171.2 ) $ (1.3 ) $ 57.4 Suburban Propane Partners, L.P. units (2) 3.4 — — 3.4 — — 3.4 Total assets at fair value $ 11.1 $ 222.2 $ — $ 233.3 $ (171.2 ) $ (1.3 ) $ 60.8 Liabilities Liabilities from price risk management $ 6.4 $ 201.8 $ — $ 208.2 $ (171.2 ) $ (32.2 ) $ 4.8 Total liabilities at fair value $ 6.4 $ 201.8 $ — $ 208.2 $ (171.2 ) $ (32.2 ) $ 4.8 December 31, 2018 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 12.4 $ 160.7 $ — $ 173.1 $ (140.3 ) $ 1.9 $ 34.7 Suburban Propane Partners, L.P. units (2) 2.8 — — 2.8 — — 2.8 Total assets at fair value $ 15.2 $ 160.7 $ — $ 175.9 $ (140.3 ) $ 1.9 $ 37.5 Liabilities Liabilities from price risk management $ 7.0 $ 144.7 $ — $ 151.7 $ (140.3 ) $ (5.6 ) $ 5.8 Total liabilities at fair value $ 7.0 $ 144.7 $ — $ 151.7 $ (140.3 ) $ (5.6 ) $ 5.8 (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)	9 Months Ended
	Sep. 30, 2019
Text Block [Abstract]
Components Of Long-Term Debt	Long-term debt consisted of the following at September 30, 2019 and December 31, 2018 ( in millions ): September 30, December 31, Credit Facility $ 497.6 $ 578.2 2023 Senior Notes 700.0 700.0 2025 Senior Notes 500.0 500.0 2027 Senior Notes 600.0 — Other 0.6 1.5 Less: deferred financing costs, net 30.8 26.4 Total debt 2,267.4 1,753.3 Less: current portion 0.2 0.9 Total long-term debt, less current portion $ 2,267.2 $ 1,752.4

Earnings Per Limited Partner _2

Earnings Per Limited Partner Unit (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	The following table summarizes information regarding the weighted-average of common units excluded during the three and nine months ended September 30, 2019 and 2018 (in millions) : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Preferred units (1) 7.1 7.1 7.1 7.1 Crestwood Niobrara’s preferred units (1) — 5.1 — 5.1 Stock-based compensation performance units (2) — 0.3 — 0.3 Subordinated units (2) — 0.4 — 0.4 (1) See Note 10 for additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units. (2) For a description of our performance units and subordinated units, see our 2018 Annual Report on Form 10-K. The table below shows CEQP’s net income (loss) per limited partner unit based on the number of basic and diluted limited partner units outstanding for the three and nine months ended September 30, 2019 and 2018 (in millions, except per unit data) : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Common unitholders’ interest in net income (loss) $ 8.6 $ (24.3 ) $ 202.0 $ (49.8 ) Dilutive effect of net income attributable to subordinated units 0.1 — 1.2 — Diluted net income (loss) $ 8.7 $ (24.3 ) $ 203.2 $ (49.8 ) Weighted-average limited partners’ units outstanding - basic 71.8 71.2 71.8 71.2 Dilutive effect of Crestwood Niobrara preferred units 3.0 — 3.9 — Dilutive effect of stock-based compensation performance units 0.3 — 0.3 — Dilutive effect of subordinated units 0.4 — 0.4 — Weighted-average limited partners’ units outstanding - diluted 75.5 71.2 76.4 71.2 Basic earnings per unit: Net income (loss) per limited partner unit $ 0.12 $ (0.34 ) $ 2.81 $ (0.70 ) Diluted earnings per unit: Net income (loss) per limited partner unit $ 0.12 $ (0.34 ) $ 2.66 $ (0.70 )

Partners' Capital (Tables)

Partners' Capital (Tables)	9 Months Ended
	Sep. 30, 2019
Statement of Partners' Capital [Abstract]
Schedule of Distributions Made to Members or Limited Partners, by Distribution	A summary of CEQP’s limited partner quarterly cash distributions for the nine months ended September 30, 2019 and 2018 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2019 February 7, 2019 February 14, 2019 $ 0.60 $ 43.1 May 8, 2019 May 15, 2019 0.60 43.1 August 7, 2019 August 14, 2019 0.60 43.1 $ 129.3 2018 February 7, 2018 February 14, 2018 $ 0.60 $ 42.7 May 8, 2018 May 15, 2018 0.60 42.7 August 7, 2018 August 14, 2018 0.60 42.7 $ 128.1
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]	The following table shows the change in our non-controlling interest in subsidiary at September 30, 2019 (in millions) : Balance at April 9, 2019 (1) $ — Reclassification of Series A-2 Preferred Units 178.8 Issuance of Series A-3 Preferred Units 235.0 Distributions to non-controlling partner (9.2 ) Net income attributable to non-controlling partner (2) 20.5 Balance at September 30, 2019 $ 425.1

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Purchase Commitment, Excluding Long-term Commitment [Table Text Block]	The following table summarizes CEQP’s and CMLP’s self-insurance reserves at September 30, 2019 and December 31, 2018 ( in millions ): CEQP CMLP September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 Self-insurance reserves (1) $ 10.5 $ 11.3 $ 9.4 $ 9.6 (1) At September 30, 2019 , CEQP and CMLP classified approximately $7.4 million and $6.3 million , respectively of these reserves as other long-term liabilities on their consolidated balance sheets.

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table shows transactions with our affiliates which are reflected in our consolidated statements of operations ( in millions ). For a further description of our related party agreements, see our 2018 Annual Report on Form 10-K. Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Revenues at CEQP and CMLP $ 0.3 $ 0.3 $ 2.8 $ 0.9 Costs of product/services sold at CEQP and CMLP (1) $ 3.8 $ 45.7 $ 39.1 $ 91.0 Operations and maintenance expenses at CEQP and CMLP (2) $ 6.3 $ 8.2 $ 19.7 $ 22.2 General and administrative expenses charged by CEQP to CMLP, net (3) $ 7.9 $ 4.8 $ 29.0 $ 15.3 General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net (4) $ 0.3 $ (4.0 ) $ (5.0 ) $ (8.8 ) (1) Includes $3.6 million and $12.7 million during the three and nine months ended September 30, 2019 and $16.8 million and $45.1 million during the three and nine months ended September 30, 2018 related to purchases of NGLs from a subsidiary of Crestwood Permian. Includes less than $0.1 million and $23.9 million during the three and nine months ended September 30, 2019 and $28.9 million and $45.9 million during the three and nine months ended September 30, 2018 related to an agency marketing agreement with Ascent Resources - Utica, LLC, an affiliate of Crestwood Holdings. Includes $0.2 million during the both the three and nine months ended September 30, 2019 related to an agreement with Blue Racer Midstream, LLC, an affiliate of Crestwood Holdings. Includes less than $0.1 million and $2.3 million during the three and nine months ended September 30, 2019 related to purchases of natural gas from a subsidiary of Stagecoach Gas. (2) We have operating agreements with certain of our unconsolidated affiliates pursuant to which we charge them operations and maintenance expenses in accordance with their respective agreements, and these charges are reflected as a reduction of operations and maintenance expenses in our consolidated statements of operations. During the three and nine months ended September 30, 2019 , we charged $1.8 million and $5.7 million to Stagecoach Gas, $1.1 million and $3.3 million to Tres Palacios, and $3.4 million and $10.2 million to Crestwood Permian. During the nine months ended September 30, 2019, we charged $0.5 million to Jackalope. During the three and nine months ended September 30, 2018 , we charged $1.8 million and $6.0 million to Stagecoach Gas, $0.9 million and $2.9 million to Tres Palacios, $5.1 million and $12.6 million to Crestwood Permian, and $0.4 million and $0.7 million to Jackalope. (3) Includes $8.9 million and $31.8 million unit-based compensation charges allocated from CEQP to CMLP for the three and nine months ended September 30, 2019 and and $5.6 million and $17.7 million for the three and nine months ended September 30, 2018 . In addition, includes $1.0 million and $2.8 million of CMLP’s general and administrative costs allocated to CEQP during the three and nine months ended September 30, 2019 and and $0.8 million and $2.4 million during the three and nine months ended September 30, 2018 . (4) Includes $0.4 million and $6.1 million unit-based compensation charges allocated from Crestwood Holdings to CEQP and CMLP during the three and nine months ended September 30, 2019 and $4.8 million and $10.2 million during the three and nine months ended September 30, 2018 .
Schedule of Related Party Receivables and Payables	The following table shows accounts receivable and accounts payable with our affiliates ( in millions ): September 30, December 31, Accounts receivable at CEQP and CMLP $ 7.7 $ 4.1 Accounts payable at CEQP $ 8.1 $ 16.1 Accounts payable at CMLP $ 5.6 $ 13.6

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting, Other Significant Reconciling Item [Line Items]
Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization	Below is a reconciliation of CEQP’s net income (loss) to EBITDA ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Net income (loss) $ 33.6 $ (5.2 ) $ 272.7 $ 7.4 Add: Interest and debt expense, net 30.6 25.1 83.3 73.8 Provision for income taxes — — 0.3 0.2 Depreciation, amortization and accretion 51.5 39.2 140.6 128.8 EBITDA $ 115.7 $ 59.1 $ 496.9 $ 210.2
Summary Of Segment Information	The following tables summarize CEQP’s and CMLP’s reportable segment data for the three and nine months ended September 30, 2019 and 2018 ( in millions ). Intersegment revenues included in the following tables are accounted for as arms-length transactions that apply our revenue recognition policies as described in our 2018 Annual Report on Form 10-K. Included in earnings from unconsolidated affiliates, net below was approximately $9.7 million and $10.8 million of interest expense, depreciation and amortization expense and gains (losses) on long-lived assets, net related to our equity investments for the three months ended September 30, 2019 and 2018 and $32.7 million and $30.4 million for the nine months ended September 30, 2019 and 2018 . Crestwood Equity Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 257.8 $ 4.1 $ 561.7 $ — $ 823.6 Intersegment revenues 33.6 3.5 (37.1 ) — — Costs of product/services sold 164.1 0.1 493.2 — 657.4 Operations and maintenance expense 27.5 1.1 7.4 — 36.0 General and administrative expense — — — 24.9 24.9 Loss on long-lived assets, net (0.1 ) — — — (0.1 ) Earnings (loss) from unconsolidated affiliates, net (0.5 ) 10.9 — — 10.4 Other income, net — — — 0.1 0.1 EBITDA $ 99.2 $ 17.3 $ 24.0 $ (24.8 ) $ 115.7 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,649.4 $ 987.5 $ 617.3 $ 36.5 $ 5,290.7 Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 242.3 $ 3.5 $ 684.4 $ — $ 930.2 Intersegment revenues 54.8 2.6 (57.4 ) — — Costs of product/services sold 205.1 (0.1 ) 622.5 — 827.5 Operations and maintenance expense 17.2 0.7 11.7 — 29.6 General and administrative expense — — — 25.5 25.5 Gain (loss) on long-lived assets (2.2 ) — (2.5 ) 1.1 (3.6 ) Earnings from unconsolidated affiliates, net 5.6 9.5 — — 15.1 EBITDA $ 78.2 $ 15.0 $ (9.7 ) $ (24.4 ) $ 59.1 Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 639.8 $ 16.8 $ 1,685.6 $ — $ 2,342.2 Intersegment revenues 111.8 10.3 (122.1 ) — — Costs of product/services sold 411.0 0.1 1,479.1 — 1,890.2 Operations and maintenance expense 70.2 3.0 26.1 — 99.3 General and administrative expense — — — 84.4 84.4 Gain (loss) on long-lived assets, net (2.1 ) — (0.2 ) 0.2 (2.1 ) Gain on acquisition 209.4 — — — 209.4 Earnings (loss) from unconsolidated affiliates, net (3.5 ) 24.5 — — 21.0 Other income, net — — — 0.3 0.3 EBITDA $ 474.2 $ 48.5 $ 58.1 $ (83.9 ) $ 496.9 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,649.4 $ 987.5 $ 617.3 $ 36.5 $ 5,290.7 Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 838.1 $ 12.8 $ 2,034.8 $ — $ 2,885.7 Intersegment revenues 141.5 7.1 (148.6 ) — — Costs of product/services sold 701.6 0.1 1,817.0 — 2,518.7 Operations and maintenance expense 52.7 2.3 41.0 — 96.0 General and administrative expense — — — 72.8 72.8 Gain (loss) on long-lived assets (2.1 ) — (26.7 ) 1.1 (27.7 ) Earnings from unconsolidated affiliates, net 15.8 23.7 — — 39.5 Other income, net — — — 0.2 0.2 EBITDA $ 239.0 $ 41.2 $ 1.5 $ (71.5 ) $ 210.2
Disaggregation of Revenue	Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 43.7 $ — $ — $ — $ 43.7 Crude oil 20.1 — — — 20.1 Water 21.3 — — — 21.3 Processing Natural gas 8.9 — — — 8.9 Compression Natural gas 6.4 — — — 6.4 Storage Crude oil 0.4 1.5 — (0.5 ) 1.4 NGLs — — 1.6 — 1.6 Pipeline Crude oil — 2.6 — (1.0 ) 1.6 Transportation Crude oil 2.2 — 1.4 (0.1 ) 3.5 NGLs — — 2.3 — 2.3 Rail Loading Crude oil — 2.4 — (1.2 ) 1.2 Product Sales Natural gas 10.3 — 13.8 (6.5 ) 17.6 Crude oil 170.0 — 383.6 (24.1 ) 529.5 NGLs 8.1 — 119.2 (2.8 ) 124.5 Other — 1.1 0.4 (0.9 ) 0.6 Total Topic 606 revenues 291.4 7.6 522.3 (37.1 ) 784.2 Non-Topic 606 revenues (1) — — 39.4 — 39.4 Total revenues $ 291.4 $ 7.6 $ 561.7 $ (37.1 ) $ 823.6 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 32.9 $ — $ — $ — $ 32.9 Crude oil 9.4 — — — 9.4 Water 15.5 — — — 15.5 Processing Natural gas 2.7 — — — 2.7 NGLs — — 2.0 — 2.0 Compression Natural gas 7.0 — — — 7.0 Storage Crude oil 0.4 0.8 — (0.4 ) 0.8 NGLs — — 1.9 — 1.9 Pipeline Crude oil — 2.1 — (0.6 ) 1.5 Transportation Crude oil 0.9 — 1.5 — 2.4 NGLs — — 6.6 — 6.6 Rail Loading Crude oil — 2.8 — (1.3 ) 1.5 NGLs — — 0.9 — 0.9 Product Sales Natural gas 13.4 — 31.7 (3.9 ) 41.2 Crude oil 190.3 — 268.8 (43.1 ) 416.0 NGLs 24.6 — 291.1 (7.8 ) 307.9 Other — 0.4 — (0.3 ) 0.1 Total Topic 606 revenues 297.1 6.1 604.5 (57.4 ) 850.3 Non-Topic 606 revenues (1) — — 79.9 — 79.9 Total revenues $ 297.1 $ 6.1 $ 684.4 $ (57.4 ) $ 930.2 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 116.8 $ — $ — $ — $ 116.8 Crude oil 50.5 — — — 50.5 Water 57.1 — — — 57.1 Processing Natural gas 19.5 — — — 19.5 Compression Natural gas 18.6 — — — 18.6 Storage Crude oil 1.4 4.4 — (1.7 ) 4.1 NGLs — — 4.2 — 4.2 Pipeline Crude oil — 5.8 — (2.2 ) 3.6 Transportation Crude oil 5.5 — 4.4 (0.1 ) 9.8 NGLs — — 8.5 — 8.5 Rail Loading Crude oil — 13.5 — (4.0 ) 9.5 Product Sales Natural gas 40.0 — 44.0 (17.9 ) 66.1 Crude oil 411.8 — 965.1 (83.4 ) 1,293.5 NGLs 30.4 — 474.6 (10.1 ) 494.9 Other — 3.4 0.7 (2.7 ) 1.4 Total Topic 606 revenues 751.6 27.1 1,501.5 (122.1 ) 2,158.1 Non-Topic 606 revenues (1) — — 184.1 — 184.1 Total revenues $ 751.6 $ 27.1 $ 1,685.6 $ (122.1 ) $ 2,342.2 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 102.2 $ — $ — $ — $ 102.2 Crude oil 28.0 — — — 28.0 Water 41.3 — — — 41.3 Processing Natural gas 8.1 — — — 8.1 NGLs — — 6.1 — 6.1 Compression Natural gas 22.5 — — — 22.5 Storage Crude oil 1.3 2.6 — (0.9 ) 3.0 NGLs — — 7.4 — 7.4 Pipeline Crude oil — 4.7 — (1.6 ) 3.1 Transportation Crude oil 2.1 — 4.4 — 6.5 NGLs — — 26.0 — 26.0 Water — — 0.2 — 0.2 Rail Loading Crude oil — 11.5 — (3.8 ) 7.7 NGLs — — 3.1 — 3.1 Product Sales Natural gas 38.7 — 48.4 (10.6 ) 76.5 Crude oil 667.9 — 725.4 (112.4 ) 1280.9 NGLs 67.5 — 1003.1 (18.5 ) 1052.1 Other — 1.1 — (0.8 ) 0.3 Total Topic 606 revenues 979.6 19.9 1,824.1 (148.6 ) 2,675.0 Non-Topic 606 revenues (1) — — 210.7 — 210.7 Total revenues $ 979.6 $ 19.9 $ 2,034.8 $ (148.6 ) $ 2,885.7 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization	Below is a reconciliation of CMLP’s net income (loss) to EBITDA ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Net income (loss) $ 31.2 $ (7.8 ) $ 265.7 $ 1.1 Add: Interest and debt expense, net 30.6 25.1 83.3 73.8 Provision (benefit) for income taxes (0.1 ) — 0.2 0.1 Depreciation, amortization and accretion 55.1 42.7 151.2 137.9 EBITDA $ 116.8 $ 60.0 $ 500.4 $ 212.9
Summary Of Segment Information	Crestwood Midstream Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 257.8 $ 4.1 $ 561.7 $ — $ 823.6 Intersegment revenues 33.6 3.5 (37.1 ) — — Costs of product/services sold 164.1 0.1 493.2 — 657.4 Operations and maintenance expense 27.5 1.1 7.4 — 36.0 General and administrative expense — — — 23.7 23.7 Loss on long-lived assets, net (0.1 ) — — — (0.1 ) Earnings (loss) from unconsolidated affiliates, net (0.5 ) 10.9 — — 10.4 EBITDA $ 99.2 $ 17.3 $ 24.0 $ (23.7 ) $ 116.8 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,812.4 $ 987.5 $ 617.3 $ 30.9 $ 5,448.1 Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 242.3 $ 3.5 $ 684.4 $ — $ 930.2 Intersegment revenues 54.8 2.6 (57.4 ) — — Costs of product/services sold 205.1 (0.1 ) 622.5 — 827.5 Operations and maintenance expense 17.2 0.7 11.7 — 29.6 General and administrative expense — — — 24.6 24.6 Gain (loss) on long-lived assets (2.2 ) — (2.5 ) 1.1 (3.6 ) Earnings from unconsolidated affiliates, net 5.6 9.5 — — 15.1 EBITDA $ 78.2 $ 15.0 $ (9.7 ) $ (23.5 ) $ 60.0 Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 639.8 $ 16.8 $ 1,685.6 $ — $ 2,342.2 Intersegment revenues 111.8 10.3 (122.1 ) — — Costs of product/services sold 411.0 0.1 1,479.1 — 1,890.2 Operations and maintenance expense 70.2 3.0 26.1 — 99.3 General and administrative expense — — — 80.6 80.6 Gain (loss) on long-lived assets, net (2.1 ) — (0.2 ) 0.2 (2.1 ) Gain on acquisition 209.4 — — — 209.4 Earnings (loss) from unconsolidated affiliates, net (3.5 ) 24.5 — — 21.0 EBITDA $ 474.2 $ 48.5 $ 58.1 $ (80.4 ) $ 500.4 Goodwill $ 126.2 $ — $ 92.7 $ — $ 218.9 Total assets $ 3,812.4 $ 987.5 $ 617.3 $ 30.9 $ 5,448.1 Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Corporate Total Revenues $ 838.1 $ 12.8 $ 2,034.8 $ — $ 2,885.7 Intersegment revenues 141.5 7.1 (148.6 ) — — Costs of product/services sold 701.6 0.1 1,817.0 — 2,518.7 Operations and maintenance expense 52.7 2.3 41.0 — 96.0 General and administrative expense — — — 69.9 69.9 Gain (loss) on long-lived assets (2.1 ) — (26.7 ) 1.1 (27.7 ) Earnings from unconsolidated affiliates, net 15.8 23.7 — — 39.5 EBITDA $ 239.0 $ 41.2 $ 1.5 $ (68.8 ) $ 212.9

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue Recognition and Deferred Revenue [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	The following table provides a summary of the opening and closing balances of our contract assets and contract liabilities (in millions) : September 30, 2019 December 31, 2018 Contract Assets (Non-current) $ 0.8 $ 1.0 Contract Liabilities (Current) (1) $ 10.3 $ 12.0 Contract Liabilities (Non-current) (1) $ 112.8 $ 65.4 (1) During the three and nine months ended September 30, 2019 , we recognized revenues of approximately $2.6 million and $8.4 million that were previously included in contract liabilities (current) at December 31, 2018 . The remaining change in our contract liabilities during the three and nine months ended September 30, 2019 , partially related to approximately $21.5 million of deferred revenues recorded in the purchase price allocation for the Jackalope Acquisition described in more detail in Note 3, and the remainder relates primarily to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of September 30, 2019 (in millions) : Remainder of 2019 $ 25.1 2020 97.7 2021 86.1 2022 79.2 2023 7.3 Thereafter 3.3 Total $ 298.7
Disaggregation of Revenue	Three Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 43.7 $ — $ — $ — $ 43.7 Crude oil 20.1 — — — 20.1 Water 21.3 — — — 21.3 Processing Natural gas 8.9 — — — 8.9 Compression Natural gas 6.4 — — — 6.4 Storage Crude oil 0.4 1.5 — (0.5 ) 1.4 NGLs — — 1.6 — 1.6 Pipeline Crude oil — 2.6 — (1.0 ) 1.6 Transportation Crude oil 2.2 — 1.4 (0.1 ) 3.5 NGLs — — 2.3 — 2.3 Rail Loading Crude oil — 2.4 — (1.2 ) 1.2 Product Sales Natural gas 10.3 — 13.8 (6.5 ) 17.6 Crude oil 170.0 — 383.6 (24.1 ) 529.5 NGLs 8.1 — 119.2 (2.8 ) 124.5 Other — 1.1 0.4 (0.9 ) 0.6 Total Topic 606 revenues 291.4 7.6 522.3 (37.1 ) 784.2 Non-Topic 606 revenues (1) — — 39.4 — 39.4 Total revenues $ 291.4 $ 7.6 $ 561.7 $ (37.1 ) $ 823.6 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Three Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 32.9 $ — $ — $ — $ 32.9 Crude oil 9.4 — — — 9.4 Water 15.5 — — — 15.5 Processing Natural gas 2.7 — — — 2.7 NGLs — — 2.0 — 2.0 Compression Natural gas 7.0 — — — 7.0 Storage Crude oil 0.4 0.8 — (0.4 ) 0.8 NGLs — — 1.9 — 1.9 Pipeline Crude oil — 2.1 — (0.6 ) 1.5 Transportation Crude oil 0.9 — 1.5 — 2.4 NGLs — — 6.6 — 6.6 Rail Loading Crude oil — 2.8 — (1.3 ) 1.5 NGLs — — 0.9 — 0.9 Product Sales Natural gas 13.4 — 31.7 (3.9 ) 41.2 Crude oil 190.3 — 268.8 (43.1 ) 416.0 NGLs 24.6 — 291.1 (7.8 ) 307.9 Other — 0.4 — (0.3 ) 0.1 Total Topic 606 revenues 297.1 6.1 604.5 (57.4 ) 850.3 Non-Topic 606 revenues (1) — — 79.9 — 79.9 Total revenues $ 297.1 $ 6.1 $ 684.4 $ (57.4 ) $ 930.2 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2019 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 116.8 $ — $ — $ — $ 116.8 Crude oil 50.5 — — — 50.5 Water 57.1 — — — 57.1 Processing Natural gas 19.5 — — — 19.5 Compression Natural gas 18.6 — — — 18.6 Storage Crude oil 1.4 4.4 — (1.7 ) 4.1 NGLs — — 4.2 — 4.2 Pipeline Crude oil — 5.8 — (2.2 ) 3.6 Transportation Crude oil 5.5 — 4.4 (0.1 ) 9.8 NGLs — — 8.5 — 8.5 Rail Loading Crude oil — 13.5 — (4.0 ) 9.5 Product Sales Natural gas 40.0 — 44.0 (17.9 ) 66.1 Crude oil 411.8 — 965.1 (83.4 ) 1,293.5 NGLs 30.4 — 474.6 (10.1 ) 494.9 Other — 3.4 0.7 (2.7 ) 1.4 Total Topic 606 revenues 751.6 27.1 1,501.5 (122.1 ) 2,158.1 Non-Topic 606 revenues (1) — — 184.1 — 184.1 Total revenues $ 751.6 $ 27.1 $ 1,685.6 $ (122.1 ) $ 2,342.2 (1) Represents revenues primarily related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities. Nine Months Ended September 30, 2018 Gathering and Processing Storage and Transportation Marketing, Supply and Logistics Intersegment Elimination Total Revenues: Topic 606 revenues Gathering Natural gas $ 102.2 $ — $ — $ — $ 102.2 Crude oil 28.0 — — — 28.0 Water 41.3 — — — 41.3 Processing Natural gas 8.1 — — — 8.1 NGLs — — 6.1 — 6.1 Compression Natural gas 22.5 — — — 22.5 Storage Crude oil 1.3 2.6 — (0.9 ) 3.0 NGLs — — 7.4 — 7.4 Pipeline Crude oil — 4.7 — (1.6 ) 3.1 Transportation Crude oil 2.1 — 4.4 — 6.5 NGLs — — 26.0 — 26.0 Water — — 0.2 — 0.2 Rail Loading Crude oil — 11.5 — (3.8 ) 7.7 NGLs — — 3.1 — 3.1 Product Sales Natural gas 38.7 — 48.4 (10.6 ) 76.5 Crude oil 667.9 — 725.4 (112.4 ) 1280.9 NGLs 67.5 — 1003.1 (18.5 ) 1052.1 Other — 1.1 — (0.8 ) 0.3 Total Topic 606 revenues 979.6 19.9 1,824.1 (148.6 ) 2,675.0 Non-Topic 606 revenues (1) — — 210.7 — 210.7 Total revenues $ 979.6 $ 19.9 $ 2,034.8 $ (148.6 ) $ 2,885.7 (1) Represents revenues related to our commodity-based derivatives. See Note 6 for additional information related to our price risk management activities.

Condensed Consolidating Finan_2

Condensed Consolidating Financial Information (Tables)	9 Months Ended
	Sep. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheet	Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.5 $ — $ 0.4 $ — $ 0.9 Accounts receivable — 233.6 24.4 — 258.0 Inventory — 43.5 — — 43.5 Other current assets — 65.5 0.3 — 65.8 Total current assets 0.5 342.6 25.1 — 368.2 Property, plant and equipment, net — 2,323.1 677.8 — 3,000.9 Goodwill and intangible assets, net — 661.1 377.7 — 1,038.8 Operating lease right-of-use assets, net — 55.7 2.9 — 58.6 Investment in consolidated affiliates 4,439.5 — — (4,439.5 ) — Investment in unconsolidated affiliates — — 979.6 — 979.6 Other non-current assets — 2.0 — — 2.0 Total assets $ 4,440.0 $ 3,384.5 $ 2,063.1 $ (4,439.5 ) $ 5,448.1 Liabilities and capital Current liabilities: Accounts payable $ — $ 175.7 $ 20.1 $ — $ 195.8 Other current liabilities 54.0 112.0 7.1 — 173.1 Total current liabilities 54.0 287.7 27.2 — 368.9 Long-term liabilities: Long-term debt, less current portion 2,267.2 — — — 2,267.2 Other long-term liabilities — 173.6 93.8 — 267.4 Deferred income taxes — 0.7 — — 0.7 Total liabilities 2,321.2 462.0 121.0 — 2,904.2 Interest of non-controlling partner in subsidiary — — 425.1 — 425.1 Partners’ capital 2,118.8 2,922.5 1,517.0 (4,439.5 ) 2,118.8 Total liabilities and capital $ 4,440.0 $ 3,384.5 $ 2,063.1 $ (4,439.5 ) $ 5,448.1 Crestwood Midstream Partners LP Condensed Consolidating Balance Sheet December 31, 2018 (in millions) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash $ 0.2 $ — $ — $ — $ 0.2 Restricted cash 16.3 — — — 16.3 Accounts receivable — 246.3 19.9 (16.3 ) 249.9 Inventory — 64.6 — — 64.6 Other current assets — 46.0 — — 46.0 Total current assets 16.5 356.9 19.9 (16.3 ) 377.0 Property, plant and equipment, net — 2,202.3 — — 2,202.3 Goodwill and intangible assets, net — 692.4 — — 692.4 Investment in consolidated affiliates 3,800.4 — — (3,800.4 ) — Investment in unconsolidated affiliates — — 1,188.2 — 1,188.2 Other non-current assets — 2.1 — — 2.1 Total assets $ 3,816.9 $ 3,253.7 $ 1,208.1 $ (3,816.7 ) $ 4,462.0 Liabilities and capital Current liabilities: Accounts payable $ 16.3 $ 210.5 $ — $ (16.3 ) $ 210.5 Other current liabilities 20.0 81.8 16.2 — 118.0 Total current liabilities 36.3 292.3 16.2 (16.3 ) 328.5 Long-term liabilities: Long-term debt, less current portion 1,752.4 — — — 1,752.4 Other long-term liabilities — 114.0 57.0 — 171.0 Deferred income taxes — 0.6 — — 0.6 Total liabilities 1,788.7 406.9 73.2 (16.3 ) 2,252.5 Interest of non-controlling partner in subsidiary — — 181.3 — 181.3 Partners’ capital 2,028.2 2,846.8 953.6 (3,800.4 ) 2,028.2 Total partners’ capital 2,028.2 2,846.8 1,134.9 (3,800.4 ) 2,209.5 Total liabilities and capital $ 3,816.9 $ 3,253.7 $ 1,208.1 $ (3,816.7 ) $ 4,462.0
Condensed Income Statement	Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 801.1 $ 23.2 $ (0.7 ) $ 823.6 Costs of product/services sold — 657.4 0.7 (0.7 ) 657.4 Operating expenses and other: Operations and maintenance — 30.8 5.2 — 36.0 General and administrative 10.7 13.0 — — 23.7 Depreciation, amortization and accretion — 45.5 9.6 — 55.1 Loss on long-lived assets, net — 0.1 — — 0.1 10.7 89.4 14.8 — 114.9 Operating income (loss) (10.7 ) 54.3 7.7 — 51.3 Earnings from unconsolidated affiliates, net — — 10.4 — 10.4 Interest and debt income (expense), net (30.7 ) — 0.1 — (30.6 ) Equity in net income (loss) of subsidiaries 62.7 — — (62.7 ) — Income (loss) before income taxes 21.3 54.3 18.2 (62.7 ) 31.1 Benefit for income taxes — 0.1 — — 0.1 Net income (loss) 21.3 54.4 18.2 (62.7 ) 31.2 Net income attributable to non-controlling partner in subsidiary — — 9.9 — 9.9 Net income (loss) attributable to Crestwood Midstream Partners LP $ 21.3 $ 54.4 $ 8.3 $ (62.7 ) $ 21.3 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Three Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 930.2 $ — $ — $ 930.2 Costs of product/services sold — 827.5 — — 827.5 Operating expenses: Operations and maintenance — 29.6 — — 29.6 General and administrative 14.3 10.3 — — 24.6 Depreciation, amortization and accretion — 42.7 — — 42.7 Loss on long-lived assets, net — 3.6 — — 3.6 14.3 86.2 — — 100.5 Operating income (loss) (14.3 ) 16.5 — — 2.2 Earnings from unconsolidated affiliates, net — — 15.1 — 15.1 Interest and debt expense, net (25.1 ) — — — (25.1 ) Equity in net income (loss) of subsidiaries 27.5 — — (27.5 ) — Net income (loss) (11.9 ) 16.5 15.1 (27.5 ) (7.8 ) Net income attributable to non-controlling partner in subsidiary — — 4.1 — 4.1 Net income (loss) attributable to Crestwood Midstream Partners LP $ (11.9 ) $ 16.5 $ 11.0 $ (27.5 ) $ (11.9 ) Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Nine Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 2,299.5 $ 43.4 $ (0.7 ) $ 2,342.2 Costs of product/services sold — 1,890.2 0.7 (0.7 ) 1,890.2 Operating expenses and other: Operations and maintenance — 86.9 12.4 — 99.3 General and administrative 39.1 41.5 — — 80.6 Depreciation, amortization and accretion — 131.9 19.3 — 151.2 Loss on long-lived assets, net — 2.1 — — 2.1 Gain on acquisition — — (209.4 ) — (209.4 ) 39.1 262.4 (177.7 ) — 123.8 Operating income (loss) (39.1 ) 146.9 220.4 — 328.2 Earnings from unconsolidated affiliates, net — — 21.0 — 21.0 Interest and debt income (expense), net (83.4 ) — 0.1 — (83.3 ) Equity in net income (loss) of subsidiaries 363.7 — — (363.7 ) — Income (loss) before income taxes 241.2 146.9 241.5 (363.7 ) 265.9 Provision for income taxes — (0.2 ) — — (0.2 ) Net income (loss) 241.2 146.7 241.5 (363.7 ) 265.7 Net income attributable to non-controlling partner in subsidiary — — 24.5 — 24.5 Net income (loss) attributable to Crestwood Midstream Partners LP $ 241.2 $ 146.7 $ 217.0 $ (363.7 ) $ 241.2 Crestwood Midstream Partners LP Condensed Consolidating Statement of Operations Nine Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 2,885.7 $ — $ — $ 2,885.7 Costs of product/services sold — 2,518.7 — — 2,518.7 Operating expenses: Operations and maintenance — 96.0 — — 96.0 General and administrative 42.0 27.9 — — 69.9 Depreciation, amortization and accretion — 137.9 — — 137.9 Loss on long-lived assets, net — 27.7 — — 27.7 42.0 289.5 — — 331.5 Operating income (loss) (42.0 ) 77.5 — — 35.5 Earnings from unconsolidated affiliates, net — — 39.5 — 39.5 Interest and debt expense, net (73.8 ) — — — (73.8 ) Equity in net income (loss) of subsidiaries 104.8 — — (104.8 ) — Income (loss) before income taxes (11.0 ) 77.5 39.5 (104.8 ) 1.2 Provision for income taxes — (0.1 ) — — (0.1 ) Net income (loss) (11.0 ) 77.4 39.5 (104.8 ) 1.1 Net income attributable to non-controlling partner in subsidiary — — 12.1 — 12.1 Net income (loss) attributable to Crestwood Midstream Partners LP $ (11.0 ) $ 77.4 $ 27.4 $ (104.8 ) $ (11.0 )
Condensed Cash Flow Statement	Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2019 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities $ (100.2 ) $ 322.1 $ 59.1 $ — $ 281.0 Cash flows from investing activities: Acquisition, net of cash acquired — — (462.1 ) — (462.1 ) Purchases of property, plant and equipment — (209.6 ) (137.4 ) — (347.0 ) Investment in unconsolidated affiliates — — (52.3 ) — (52.3 ) Capital distributions from unconsolidated affiliates — — 27.3 — 27.3 Capital contributions to consolidated affiliates (239.6 ) — — 239.6 — Other — (0.4 ) — — (0.4 ) Net cash provided by (used in) investing activities (239.6 ) (210.0 ) (624.5 ) 239.6 (834.5 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,993.7 — — — 1,993.7 Payments on long-term debt (1,474.3 ) (0.9 ) — — (1,475.2 ) Payments on finance leases — (2.6 ) — — (2.6 ) Payments for debt-related deferred costs (9.0 ) — — — (9.0 ) Net proceeds from the issuance of non-controlling interest — — 235.0 — 235.0 Distributions to partners (177.3 ) — (15.8 ) — (193.1 ) Contributions from parent — — 239.6 (239.6 ) — Taxes paid for unit-based compensation vesting — (10.9 ) — — (10.9 ) Change in intercompany balances (9.3 ) (97.7 ) 107.0 — — Net cash provided by (used in) financing activities 323.8 (112.1 ) 565.8 (239.6 ) 537.9 Net change in cash and restricted cash (16.0 ) — 0.4 — (15.6 ) Cash and restricted cash at beginning of period 16.5 — — — 16.5 Cash and restricted cash at end of period $ 0.5 $ — $ 0.4 $ — $ 0.9 Crestwood Midstream Partners LP Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2018 (in millions) (unaudited) Parent Guarantor Subsidiaries Non- Guarantor Subsidiaries Eliminations Consolidated Cash flows from operating activities: $ (92.1 ) $ 262.1 $ 36.4 $ — $ 206.4 Cash flows from investing activities: Purchases of property, plant and equipment (3.7 ) (202.0 ) — — (205.7 ) Investment in unconsolidated affiliates — — (27.7 ) — (27.7 ) Capital distributions from unconsolidated affiliates — — 34.6 — 34.6 Net proceeds from sale of assets — 8.6 — — 8.6 Capital distributions from consolidated affiliates 36.7 — — (36.7 ) — Net cash provided by (used in) investing activities 33.0 (193.4 ) 6.9 (36.7 ) (190.2 ) Cash flows from financing activities: Proceeds from the issuance of long-term debt 1,152.1 — — — 1,152.1 Payments on long-term debt (972.8 ) (0.9 ) — — (973.7 ) Payments on capital leases — (1.1 ) — — (1.1 ) Distributions to partners (179.0 ) — (6.6 ) — (185.6 ) Distributions to parent — — (36.7 ) 36.7 — Taxes paid for unit-based compensation vesting — (6.9 ) — — (6.9 ) Change in intercompany balances 59.8 (59.8 ) — — — Net cash provided by (used in) financing activities 60.1 (68.7 ) (43.3 ) 36.7 (15.2 ) Net change in cash and restricted cash 1.0 — — — 1.0 Cash and restricted cash at beginning of period 1.0 — — — 1.0 Cash and restricted cash at end of period $ 2.0 $ — $ — $ — $ 2.0

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Balance sheet information [Abstract]
Operating lease, right-of-use assets, net	$ 58.6		$ 58.6
Accrued expenses and other liabilities	169		169			$ 112.4
Long-term operating lease liabilities	45.6		45.6
Total operating lease liabilities	64.1		64.1
Property, plant and equipment	3,505.1		3,505.1			2,598.1
Less: accumulated depreciation	666.1		666.1			568.4
Property, plant and equipment, net	2,839		2,839			2,029.7
Other long-term liabilities	225.3		225.3			173.6
Total finance lease liabilities	9		9
Components of lease expense [Abstract]
Operating Lease, Expense	6.5		21.5
Sublease Income	(0.3)		(0.7)
Operating Lease Expense, Net	6.2		20.8
Finance Lease, Right-of-Use Asset, Amortization	0.9		2.7
Finance Lease, Interest Expense	0.1		0.5
Finance Lease Expense	1		3.2
Costs of product/services sold	657.4	$ 827.5	1,890.2	$ 2,518.7
Operations and maintenance	36	$ 29.6	99.3	$ 96
Short-term and variable lease costs	$ 0.7		2.7
Supplemental cash flow information [Abstract]
Operating cash flows from operating leases			17.5
Operating cash flows from finance leases			0.5
Financing cash flows from finance leases			2.6
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			4.2
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability			$ 1.7
Operating leases weighted-average remaining lease term	4 years 4 months 24 days		4 years 4 months 24 days
Finance leases weighted-average remaining lease term	2 years 9 months 18 days		2 years 9 months 18 days
Operating leases weighted-average discount rate	5.90%		5.90%
Finance lease weighted-average discount rate	7.30%		7.30%
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	$ 5.4		$ 5.4
2020	20.8		20.8
2021	16.3		16.3
2022	11.1		11.1
2023	6.7		6.7
Thereafter	13.6		13.6
Total lease payments	73.9		73.9
Less Interest	9.8		9.8
Finance Lease, Liability, Payment, Due [Abstract]
2019	0.9		0.9
2020	3.6		3.6
2021	3.5		3.5
2022	1.9		1.9
2023	0.1		0.1
Thereafter	0		0
Total lease payments	10		10
Less Interest	1		1
Operating and Finance Lease Liabilities, Payments, Due1 [Abstract]
2019	6.3		6.3
2020	24.4		24.4
2021	19.8		19.8
2022	13		13
2023	6.8		6.8
Thereafter	13.6		13.6
Total lease payments	83.9		83.9
Less Interest	10.8		10.8
Present value of lease liabilities	$ 73.1		$ 73.1
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019						22.3
2020						18.1
2021						14.4
2022						9.7
2023						6
Thereafter						10.7
Less Interest						0
Present value of lease liabilities						81.2
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019						3
2020						3.3
2021						3.2
2022						1.9
2023						0
Thereafter						0
Total lease payments						11.4
Less Interest						1.3
Present value of lease liabilities						10.1
Operating And Capital Leases Future Minimum Payments Due [Abstract]
2019						25.3
2020						21.4
2021						17.6
2022						11.6
2023						6
Thereafter						10.7
Total lease payments						92.6
Present value of lease liabilities						$ 91.3
Minimum
Balance sheet information [Abstract]
Operating leases remaining terms			1 year
Operating leases renewal options	1 year		1 year
Finance leases remaining terms			2 years
Operating and finance Leases, discount rate	3.50%		3.50%
Maximum
Balance sheet information [Abstract]
Operating leases remaining terms			20 years
Operating leases renewal options	10 years		10 years
Finance leases remaining terms			4 years
Operating and finance Leases, discount rate	8.30%		8.30%
Operating Leases
Balance sheet information [Abstract]
Operating lease, right-of-use assets, net	$ 58.6		$ 58.6
Accrued expenses and other liabilities	18.5		18.5
Long-term operating lease liabilities	45.6		45.6
Total operating lease liabilities	64.1		64.1
Components of lease expense [Abstract]
Costs of product/services sold	3.8		13.3
Operations and maintenance	2.7		8.2
Operating Leases | Accounting Standards Update 2016-02
Balance sheet information [Abstract]
Operating lease, right-of-use assets, net					$ 67.5
Accrued expenses and other liabilities					18.6
Long-term operating lease liabilities					48.9
Finance Lease
Balance sheet information [Abstract]
Accrued expenses and other liabilities	3.1		3.1
Property, plant and equipment	14.7		14.7
Less: accumulated depreciation	4.5		4.5
Property, plant and equipment, net	10.2		10.2
Other long-term liabilities	$ 5.9		5.9
Finance Lease | Accounting Standards Update 2016-02
Balance sheet information [Abstract]
Accrued expenses and other liabilities					0.3
Property, plant and equipment					1.6
Other long-term liabilities					$ 1.3
Jackalope Gas Gathering Services, L.L.C.
Supplemental cash flow information [Abstract]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 2.9

Acquisition and Divestiture (De

Acquisition and Divestiture (Details) - USD ($) $ in Millions	Apr. 09, 2019	Apr. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Apr. 08, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal				$ (2.4)		$ (26.9)
Ownership percentage		50.00%
Business Acquisition, Pro Forma Revenue			$ 949.5		$ 2,362.9	2,936.8
Proceeds from Noncontrolling Interests					235	0
Goodwill			218.9		218.9			$ 138.6
Investments in unconsolidated affiliates			979.6		979.6			1,188.2
Gain Loss on Acquisition			0	0	209.4	0
Revenues			823.6	930.2	2,342.2	2,885.7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			33.6	(5.2)	272.7	7.4
Business Acquisition, Pro Forma Net Income (Loss)			(10.5)		$ 266.3	(10.8)
Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					18 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 22.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	30.9
Business Combination, Consideration Transferred	484.6
Business Acquisition, Transaction Costs			2.8		$ 2.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	532.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	306
Goodwill	80.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(30.4)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(21.5)
Gain Loss on Acquisition	209.4				209.4
Revenues			23.2		43.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 920.7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			7.7		11.1
Crestwood Midstream Partners LP
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue			949.5		2,362.9	2,936.8
Proceeds from Noncontrolling Interests					235	0
Goodwill			218.9		218.9			138.6
Investments in unconsolidated affiliates			979.6		979.6			1,188.2
Gain Loss on Acquisition			0	0	209.4	0
Revenues			823.6	930.2	2,342.2	2,885.7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			31.2	$ (7.8)	265.7	1.1
Business Acquisition, Pro Forma Net Income (Loss)			$ (13.1)		$ 259.3	$ (17.1)
Crestwood Niobrara LLC
Business Acquisition [Line Items]
Proceeds from Noncontrolling Interests		$ 235
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Crestwood Niobrara LLC | Williams Partners LP
Business Acquisition [Line Items]
Business Acquisition, Percentage Of Additional Voting Interests Acquired	50.00%
Business Acquisition, Percentage of Voting Interests Acquired	100.00%						50.00%
Crestwood Niobrara LLC | Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Proceeds from Noncontrolling Interests		$ 235
Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Ownership percentage		50.00%	50.00%		50.00%
Investments in unconsolidated affiliates	$ 226.7		$ 0		$ 0			$ 210.2
Jackalope Gas Gathering Services, L.L.C. | Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Investments in unconsolidated affiliates	$ 226.7
Valuation Technique, Discounted Cash Flow
Business Acquisition [Line Items]
Business Combination Discount Rate	0.12

Certain Balance Sheet Informa_3

Certain Balance Sheet Information (Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Apr. 30, 2019	Dec. 31, 2018
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	$ 57		$ 64.8
Accrued property taxes	6		2.6
Tax payable	0.2		0.3
Interest payable	53.8		19.8
Accrued additions to property, plant and equipment	20.1		10.5
Operating Lease, Liability, Current	18.5
Capital leases			2.4
Finance Lease, Liability, Current	3.1
Deferred Revenue	10.3		12
Total accrued expenses and other liabilities	169		112.4
Ownership percentage		50.00%
Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	56.1		63.7
Accrued property taxes	6		2.6
Tax payable	0.2		0.3
Interest payable	53.8		19.8
Accrued additions to property, plant and equipment	20.1		10.5
Operating Lease, Liability, Current	18.5
Capital leases			2.4
Finance Lease, Liability, Current	3.1
Deferred Revenue	10.3		12
Total accrued expenses and other liabilities	$ 168.1		111.3
Jackalope Gas Gathering Services, L.L.C.
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses			$ 16.2
Jackalope Gas Gathering Services, L.L.C.
Accrued Expenses and Other Liabilities [Line Items]
Ownership percentage	50.00%	50.00%

Investments in Unconsolidated_3

Investments in Unconsolidated Affiliates Net Investments In and Earnings (Loss) from Unconsolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Apr. 30, 2019	Apr. 09, 2019	Apr. 08, 2019	Dec. 31, 2018	Jul. 01, 2018	Jun. 30, 2018
Schedule of Equity Method Investments [Line Items]
Investment	$ 979.6		$ 979.6					$ 1,188.2
Earnings from unconsolidated affiliates, net	10.4	$ 15.1	21	$ 39.5
Ownership percentage					50.00%
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Investment	817.1		817.1					830.4
Earnings from unconsolidated affiliates, net	10.5	8.8	23.9	21.5
Difference between carrying amount and underlying equity	51.3		51.3
Equity Method Investment Distribution Percentage										40.00%
Ownership percentage									50.00%
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Investment	0		0			$ 226.7		210.2
Earnings from unconsolidated affiliates, net	$ 0	4.5	$ 3.7	11.3
Ownership percentage	50.00%		50.00%		50.00%
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment	$ 38.6		$ 38.6					35
Earnings from unconsolidated affiliates, net	0.5	0.1	0.8	0.5
Difference between carrying amount and underlying equity	24.4		24.4
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Investment	8.3		8.3					8.3
Earnings from unconsolidated affiliates, net	(0.1)	0.6	(0.2)	1.7
Difference between carrying amount and underlying equity	5.6		5.6
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment	115.6		115.6					$ 104.3
Earnings from unconsolidated affiliates, net	(0.5)	$ 1.1	(7.2)	$ 4.5
Difference between carrying amount and underlying equity	$ 10.6		$ 10.6
Ownership percentage	50.00%		50.00%
Crestwood Niobrara LLC
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Crestwood Niobrara LLC | Williams Partners LP
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Percentage Of Additional Voting Interests Acquired						50.00%
Business Acquisition, Percentage of Voting Interests Acquired						100.00%	50.00%

Investments in Unconsolidated_4

Investments in Unconsolidated Affiliates Summarized Financial Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Apr. 09, 2019
Schedule of Equity Method Investments [Line Items]
Operating Revenues	$ 205.1	$ 243.3
Operating Expenses	153.2	160.5
Net Income (Loss)	51.1	86.6
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Amortization	0.1	0.1
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Operating Revenues	120.8	129.3
Operating Expenses	61.1	59.1
Net Income (Loss)	60	70.2
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Operating Revenues	37.2	64.4
Operating Expenses	50.6	62.4
Net Income (Loss)	(14.5)	5.8
Other Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Operating Revenues	47.1	49.6
Operating Expenses	41.5	39
Net Income (Loss)	5.6	10.6
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Amortization	0.9	0.9
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Amortization	$ 0.3	$ 0.4
Crestwood Niobrara LLC | Williams Partners LP
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Percentage Of Additional Voting Interests Acquired			50.00%

Investments in Unconsolidated_5

Investments in Unconsolidated Affiliates Distributions and Contributions (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2019	Sep. 30, 2019	Sep. 30, 2018
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		$ 55.2	$ 73.8
Payments to acquire equity method investments		52.3	27.7
Payments to Acquire Equity Method Investments Cash and Noncash Consideration			27.7
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		37.2	34.7
Payments to acquire equity method investments		0	0
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		11.6	23.2
Payments to acquire equity method investments		24.4	17.6
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		2.9	10.6
Payments to acquire equity method investments		21.4
Payments to Acquire Equity Method Investments Cash and Noncash Consideration			7.6
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		3.5	3.9
Payments to acquire equity method investments		6.3	2.5
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments		0	1.4
Payments to acquire equity method investments		$ 0.2	$ 0
Subsequent Event | Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 15.1
Subsequent Event | Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	2.1
Subsequent Event | Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments	$ 2.8

Investments in Unconsolidated_6

Investments in Unconsolidated Affiliates Narrative (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Apr. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Jul. 01, 2018
Schedule of Equity Method Investments [Line Items]
Estimated Cost to Build		$ 180
Ownership percentage	50.00%
Payments to Acquire Property, Plant, and Equipment		347	$ 205.7
Proceeds from Noncontrolling Interests		$ 235	0
Jackalope Gas Gathering Services, L.L.C.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%
Stagecoach Gas Services LLC
Schedule of Equity Method Investments [Line Items]
Business Combination, Contingent Consideration, Liability, Noncurrent		$ 57		$ 57
Ownership percentage					50.00%
Crestwood Equity Partners LP | Crestwood Permian Basin Holdings
Schedule of Equity Method Investments [Line Items]
Ownership percentage		50.00%
Crestwood Niobrara LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from Noncontrolling Interests	$ 235
Crestwood Midstream Partners LP
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 347	205.7
Proceeds from Noncontrolling Interests		235	$ 0
SWEPI LP | Crestwood Permian Basin Holdings
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 175

Risk Management (Risk Managemen

Risk Management (Risk Management Activities) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Revenue	$ 39.1	$ 79.9	$ 183.4	$ 210.7
Commodity contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments not designated as hedging	$ 14.9	$ (16.7)	$ 21.9	$ (15.3)

Risk Management (Notional Amoun

Risk Management (Notional Amounts and Terms of Company's Derivative Financial Instruments) (Details) - bbl bbl in Millions	Sep. 30, 2019	Dec. 31, 2018
Propane Crude And Heating Oil | Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount	37.7	27.8
Propane Crude And Heating Oil | Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount	41	30.1
Natural Gas [Member] | Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount	4	1.8
Natural Gas [Member] | Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount	8.8	1.8

Risk Management Schedule of Der

Risk Management Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Collateral posted for commodity derivative instruments	$ 21.9	$ 14.2
Commodity contract
Derivative [Line Items]
Collateral posted for commodity derivative instruments	0.1	0.1
NYMEX Derivative Liability
Derivative [Line Items]
Derivative Liability	35.5	9.4
NYMEX Margin Deposit
Derivative [Line Items]
NYMEX margin deposits	52.8	21.7
Commodity contract with credit contingent features
Derivative [Line Items]
Aggregate fair value of commodity derivative instruments	$ 0.8	$ 2.2

Risk Management (Narrative) (De

Risk Management (Narrative) (Details) - Price Risk Contracts Member - Maximum	9 Months Ended
	Sep. 30, 2019
Derivative [Line Items]
Remaining maturity	39 months
Percent of contracts expiring in the next twelve months	84.00%

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	Sep. 30, 2019	Dec. 31, 2018
Senior Notes, 2023
Debt Instrument [Line Items]
Carrying amount	$ 694.7	$ 693.6
Fair value	719.1	668.1
Senior Notes, 2025
Debt Instrument [Line Items]
Carrying amount	494.2	493.4
Fair value	517.7	466.2
Senior Notes, due 2027
Debt Instrument [Line Items]
Carrying amount	591.8	0
Fair value	$ 613.7	$ 0

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	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	$ 229.9	$ 173.1
SPH units	3.4	2.8
Assets, Fair Value Disclosure, Excluding Netting Adjustments	233.3	175.9
Netting agreements	(171.2)	(140.3)
Derivative Asset, Fair Value of Collateral	(1.3)	1.9
Assets from price risk management, total	57.4	34.7
Total assets at fair value	60.8	37.5
Liabilities from price risk management	208.2	151.7
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	208.2	151.7
Netting agreements	(171.2)	(140.3)
Derivative Liability, Fair Value of Collateral	(32.2)	(5.6)
Liabilities from price risk management, total	4.8	5.8
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	7.7	12.4
SPH units	3.4	2.8
Assets, Fair Value Disclosure, Excluding Netting Adjustments	11.1	15.2
Liabilities from price risk management	6.4	7
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	6.4	7
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	222.2	160.7
SPH units	0	0
Assets, Fair Value Disclosure, Excluding Netting Adjustments	222.2	160.7
Liabilities from price risk management	201.8	144.7
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	201.8	144.7
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	Sep. 30, 2019	Apr. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Deferred finance costs, net	$ 30.8		$ 26.4
Total debt	2,267.4		1,753.3
Less: current portion	0.2		0.9
Total long-term debt, less current portion	2,267.2		1,752.4
Senior Notes | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes	700		700
Senior Notes | Senior Notes, 2025
Debt Instrument [Line Items]
Senior notes	500		500
Senior Notes | Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes	600	$ 600	0
Other
Debt Instrument [Line Items]
Other	0.6		1.5
Revolving Credit Facility | Crestwood Midstream Revolver
Debt Instrument [Line Items]
Credit Facility	$ 497.6		$ 578.2

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Detail) $ in Millions	1 Months Ended	9 Months Ended
	Apr. 30, 2019USD ($)	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Ownership percentage	50.00%
Senior Secured Leverage Ratio, maximum		3.75
Senior Secured Leverage Ratio		0.92
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Consolidated Leverage Ratio Maximum		5.50
Crestwood Midstream Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Available capacity		$ 684.7
Letters of credit outstanding		$ 67.7	$ 68
Debt, Weighted Average Interest Rate		4.34%	4.79%
Interest Coverage Ratio Minimum		2.50
Total Funded Debt to Consolidated Ebitda		4.23
Consolidated Ebitda To Consolidated Interest Expense		4.40
Line of Credit Facility, Increase (Decrease), Net	$ 250
Crestwood Midstream Revolver | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate		4.27%	4.63%
Crestwood Midstream Revolver | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate		6.25%	6.75%
Senior Notes | Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes	$ 600	$ 600	$ 0
Debt Instrument, Interest Rate, Stated Percentage	5.625%
Senior Notes | Senior Notes, 2025
Debt Instrument [Line Items]
Senior notes		500	500
Senior Notes | Senior Notes, 2023
Debt Instrument [Line Items]
Senior notes		$ 700	$ 700
Crestwood Midstream Partners LP | Senior Notes | Senior Notes, due 2027
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 591.1
Jackalope Gas Gathering Services, L.L.C.
Debt Instrument [Line Items]
Ownership percentage	50.00%	50.00%
Equity Interest	50.00%	50.00%

Earnings Per Limited Partner _3

Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Allocated to Limited Partners	$ 8.6	$ (24.3)	$ 202	$ (49.8)
Net Income (Loss) Allocated to Subordinated Limited Partners	0.1	0	1.2	0
Net Income (Loss) Available to Common Stockholders, Diluted	$ 8.7	$ (24.3)	$ 203.2	$ (49.8)
Basic (units)	71,800	71,200	71,800	71,200
Dilutive units (units)	3,700	0	4,600	0
Weighted Average Limited Partnership Units Outstanding, Diluted	75,500	71,200	76,400	71,200
Basic (in dollars per share)	$ 0.12	$ (0.34)	$ 2.81	$ (0.70)
Diluted (in dollars per share)	$ 0.12	$ (0.34)	$ 2.66	$ (0.70)
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Units excluded from dilutive earnings per share	7,100	7,100	7,100	7,100
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	0	5,100	0	5,100
Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	3,000	0	3,900	0
Performance Shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	300	0	300	0
Units excluded from dilutive earnings per share	0	300	0	300
Subordinated Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	400	0	400	0
Units excluded from dilutive earnings per share	0	400	0	400

Partners' Capital (Schedule of

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

Aug. 14, 2019

Aug. 07, 2019

May 15, 2019

May 08, 2019

Feb. 14, 2019

Feb. 07, 2019

Aug. 14, 2018

Aug. 07, 2018

May 15, 2018

May 08, 2018

Feb. 14, 2018

Feb. 07, 2018

Sep. 30, 2019

Sep. 30, 2018

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Date of Record

Aug. 7, 2019

May 8, 2019

Feb. 7, 2019

Aug. 7, 2018

May 8, 2018

Feb. 7, 2018

Distribution Made to Limited Partner, Distribution Date

Aug. 14, 2019

May 15, 2019

Feb. 14, 2019

Aug. 14, 2018

May 15, 2018

Feb. 14, 2018

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

$ 0.60

$ 0.60

$ 0.60

$ 0.60

$ 0.60

$ 0.60

Distribution Made to Limited Partner, Cash Distributions Paid

$ 43.1

$ 43.1

$ 43.1

$ 42.7

$ 42.7

$ 42.7

$ 129.3

$ 128.1

Partners' Capital (Components o

Partners' Capital (Components of Net Income (Loss) Attributable to Non-Controlling Interests) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Distribution Made to Limited Partner [Line Items]
Payments of Ordinary Dividends, Noncontrolling Interest			$ 15.8	$ 6.6
Net income attributable to non-controlling partners in subsidiaries	$ (9.9)	$ (4.1)	(24.5)	(12.1)
Crestwood Midstream Partners LP
Distribution Made to Limited Partner [Line Items]
Payments of Ordinary Dividends, Noncontrolling Interest			15.8	6.6
Net income attributable to non-controlling partners in subsidiaries	$ (9.9)	$ (4.1)	(24.5)	(12.1)
Crestwood Niobrara LLC
Distribution Made to Limited Partner [Line Items]
Payments of Ordinary Dividends, Noncontrolling Interest			$ 15.8	$ 6.6

Partners' Capital (Narrative) (

Partners' Capital (Narrative) (Details) - USD ($)

Nov. 14, 2019

Nov. 07, 2019

Oct. 17, 2019

Aug. 14, 2019

Aug. 07, 2019

May 15, 2019

May 08, 2019

Feb. 14, 2019

Feb. 07, 2019

Aug. 14, 2018

Aug. 07, 2018

May 15, 2018

May 08, 2018

Feb. 14, 2018

Feb. 07, 2018

Oct. 31, 2019

Apr. 30, 2019

Feb. 28, 2019

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2019

Sep. 30, 2018

Apr. 09, 2019

Distribution Made to Limited Partner [Line Items]

Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent

10.00%

Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount

$ 25,000

Distribution Made to Limited Partner, Distribution Date

Aug. 14, 2019

May 15, 2019

Feb. 14, 2019

Aug. 14, 2018

May 15, 2018

Feb. 14, 2018

Distribution Made to Limited Partner, Date of Record

Aug. 7, 2019

May 8, 2019

Feb. 7, 2019

Aug. 7, 2018

May 8, 2018

Feb. 7, 2018

Distributions to preferred unit holders

45,000,000

$ 45,000,000

Incentive Distribution, Distribution

129,300,000

128,100,000

Payments of Ordinary Dividends, Noncontrolling Interest

15,800,000

6,600,000

Distribution Made to Limited Partner, Cash Distributions Paid

$ 43,100,000

$ 43,100,000

$ 43,100,000

$ 42,700,000

$ 42,700,000

$ 42,700,000

$ 129,300,000

$ 128,100,000

Unit Purchase Plan, Shares Purchased Under Plan

1,739

0

4,289

0

Proceeds from Noncontrolling Interests

$ 235,000,000

$ 0

Maximum Value of Common Units to be Issued Under Optional Redemption

$ 100,000,000

$ 100,000,000

100,000,000

Crestwood Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Incentive Distribution, Distribution

177,300,000

179,000,000

Payments of Ordinary Dividends, Noncontrolling Interest

15,800,000

6,600,000

Distribution Made to General Partner, Cash Distributions Paid

177,300,000

179,000,000

Proceeds from Noncontrolling Interests

235,000,000

0

Crestwood Niobrara LLC

Distribution Made to Limited Partner [Line Items]

Payments of Ordinary Dividends, Noncontrolling Interest

$ 15,800,000

$ 6,600,000

Proceeds from Noncontrolling Interests

$ 235,000,000

Jackalope Gas Gathering Services, L.L.C.

Distribution Made to Limited Partner [Line Items]

Equity Interest

50.00%

50.00%

Performance Shares

Distribution Made to Limited Partner [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period

238,263

Share-based Payment Arrangement, Noncash Expense

500,000

$ 2,400,000

Subsequent Event

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distribution Date

Nov. 14, 2019

Distribution Made to Limited Partner, Date of Record

Nov. 7, 2019

Distributions to preferred unit holders

$ 15,000,000

Subsequent Event | Crestwood Niobrara LLC

Distribution Made to Limited Partner [Line Items]

Payments of Ordinary Dividends, Noncontrolling Interest

$ 9,200,000

Cash Distribution | Subsequent Event

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distributions Declared, Per Unit

$ 0.60

Crestwood LTIP

Distribution Made to Limited Partner [Line Items]

Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount

$ 4,900,000

4,900,000

$ 4,900,000

Series A-3 [Member]

Distribution Made to Limited Partner [Line Items]

Proceeds from Noncontrolling Interests

$ 235,000,000

Williams Partners LP | Crestwood Niobrara LLC

Distribution Made to Limited Partner [Line Items]

Business Acquisition, Percentage Of Additional Voting Interests Acquired

50.00%

Partners' Capital Rollforward o

Partners' Capital Rollforward of non-controlling interest (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended					6 Months Ended	9 Months Ended
	Apr. 30, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Apr. 09, 2019
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income							$ 20.5
Interest of non-controlling partner in subsidiary		$ 425.1					425.1	$ 425.1		$ 0
Reclassification of Permanent Equity to Temporary Equity							178.8
Proceeds from Noncontrolling Interests								$ 235	$ 0
Crestwood Niobrara LLC
Increase (Decrease) in Temporary Equity [Roll Forward]
Proceeds from Noncontrolling Interests	$ 235
Series A-3 [Member]
Increase (Decrease) in Temporary Equity [Roll Forward]
Proceeds from Noncontrolling Interests							235
Non-Controlling Partners
Increase (Decrease) in Temporary Equity [Roll Forward]
Reclassification of Permanent Equity to Temporary Equity			$ (178.8)
Partners' Capital Account, Distributions		$ 0	$ (3.3)	$ (3.3)	$ (3.3)	$ (3.3)
Non-Controlling Partners
Increase (Decrease) in Temporary Equity [Roll Forward]
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders							$ (9.2)

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Loss Contingency Accrual, at Carrying Value	$ 0.7	$ 0.1
Crestwood Midstream Partners LP
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Self Insurance Reserve	9.4	$ 9.6
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	$ 6.3

Commitments and Contingencies E

Commitments and Contingencies Environmental Compliance (Details) $ in Millions	1 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2019USD ($)bblRelease	Sep. 30, 2019USD ($)bbl	Dec. 31, 2014Release	Dec. 31, 2018USD ($)bbl	Sep. 15, 2015USD ($)	May 31, 2015bbl
Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure, Number of Releases of Produced Water | Release	2		3
Site Contingency, Loss Exposure, Release of Produced Water | bbl	5,000	5,000		28,000		5,200
Accrual for Environmental Loss Contingencies	$ 6.5	$ 6.5		$ 1.8
Maximum
Site Contingency [Line Items]
Loss Contingency, Estimate of Possible Loss					$ 1.1
Maximum | Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate		13.4
Minimum | Fort Berthold Indian Reservation
Site Contingency [Line Items]
Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate		$ 6.5

Commitments and Contingencies S

Commitments and Contingencies Self Insurance (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Crestwood Equity Partners LP
Other Commitments [Line Items]
Self Insurance Reserve	$ 10.5	$ 11.3
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	7.4
Crestwood Midstream Partners LP
Other Commitments [Line Items]
Self Insurance Reserve	9.4	$ 9.6
Self Insurance Reserve Expected To Be Paid Subsequent To Next Fiscal Year	$ 6.3

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Payments to Acquire Property, Plant, and Equipment			$ 347	$ 205.7
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net(4)	$ (6.3)	$ (8.2)	(19.7)	(22.2)
Applied Consultants, Inc.
Related Party Transaction [Line Items]
Payments to Acquire Property, Plant, and Equipment			6.8	4.7
Ascent Resources - Utica, LLC
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP(1)	0.1	28.9	23.9	45.9
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP(1)	0.1		2.3
Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP(1)	3.6	16.8	12.7	45.1
Affiliated Entity
Related Party Transaction [Line Items]
Revenues at CEQP and CMLP	0.3	0.3	2.8	0.9
Costs of product/services sold at CEQP and CMLP(1)	3.8	45.7	39.1	91
General and administrative expenses charged by CEQP to CMLP, net(3)	7.9	4.8	29	15.3
Related Party Transaction, Due from (to) Related Party [Abstract]
Related party receivables	7.7		7.7		$ 4.1
Accounts payable at CEQP	8.1		8.1		16.1
Blue Racer Midstream, LLC [Member]
Related Party Transaction [Line Items]
Costs of product/services sold at CEQP and CMLP(1)	0.2		0.2
Crestwood Equity Partners LP
Related Party Transaction [Line Items]
Related Party Transaction, (Income) Expenses from Transactions with Related Party	0.3	(4)	(5)	(8.8)
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Payments to Acquire Property, Plant, and Equipment			347	205.7
Revenues at CEQP and CMLP	0	0.3	0	0.9
Crestwood Midstream Partners LP | Affiliated Entity
Related Party Transaction [Line Items]
General and administrative expenses charged by CEQP to CMLP, net(3)	1	0.8	2.8	2.4
Related Party Transaction, Due from (to) Related Party [Abstract]
Accounts payable at CEQP	5.6		5.6		$ 13.6
Crestwood LTIP | Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Share-based Payment Arrangement, Expense	8.9	5.6	31.8	17.7
Crestwood LTIP | Crestwood Holdings
Related Party Transaction [Line Items]
Share-based Payment Arrangement, Expense	0.4	4.8	6.1	10.2
Stagecoach Gas Services LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net(4)	(1.8)	(1.8)	(5.7)	(6)
Tres Palacios Holdings LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net(4)	(1.1)	(0.9)	(3.3)	(2.9)
Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net(4)	$ (3.4)	(5.1)	(10.2)	(12.6)
Jackalope Gas Gathering Services, L.L.C.
Related Party Transaction [Line Items]
General and administrative expenses at CEQP charged to (from) Crestwood Holdings, net(4)		$ (0.4)	$ (0.5)	$ (0.7)

Segments (Reconciliation of Net

Segments (Reconciliation of Net Income (Loss) to EBITDA) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)segment	Sep. 30, 2018USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of Operating Segments | segment			3
Net income (loss)	$ 33.6	$ (5.2)	$ 272.7	$ 7.4
Interest and debt expense, net	30.6	25.1	83.3	73.8
Provision for income taxes	0	0	0.3	0.2
Depreciation, amortization and accretion	51.5	39.2	140.6	128.8
EBITDA	115.7	59.1	496.9	210.2
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss)	31.2	(7.8)	265.7	1.1
Interest and debt expense, net	30.6	25.1	83.3	73.8
Provision for income taxes	(0.1)	0	0.2	0.1
Depreciation, amortization and accretion	55.1	42.7	151.2	137.9
EBITDA	$ 116.8	$ 60	$ 500.4	$ 212.9

Segments (Summary Of Segment In

Segments (Summary Of Segment Information) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)segment	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Net income (loss)	$ 33.6	$ (5.2)	$ 272.7	$ 7.4
Interest and debt expense, net	30.6	25.1	$ 83.3	73.8
Number of Operating Segments | segment			3
Depreciation, amortization and accretion	51.5	39.2	$ 140.6	128.8
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	823.6	930.2	2,342.2	2,885.7
Intersegment Revenues	0	0	0	0
Costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operations and maintenance	36	29.6	99.3	96
General and administrative	24.9	25.5	84.4	72.8
Gain (loss) on long-lived assets	(0.1)	(3.6)	(2.1)	(27.7)
Gain Loss on Acquisition	0	0	209.4	0
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Other income, net	0.1		0.3	0.2
EBITDA	115.7	59.1	496.9	210.2
Goodwill	218.9		218.9		$ 138.6
Total assets	5,290.7		5,290.7		4,294.5
Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	257.8	242.3	639.8	838.1
Intersegment Revenues	33.6	54.8	111.8	141.5
Costs of product/services sold	164.1	205.1	411	701.6
Operations and maintenance	27.5	17.2	70.2	52.7
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	(0.1)	(2.2)	(2.1)	(2.1)
Gain Loss on Acquisition			209.4
Earnings from unconsolidated affiliates, net	(0.5)	5.6	(3.5)	15.8
Other income, net	0		0	0
EBITDA	99.2	78.2	474.2	239
Goodwill	126.2		126.2
Total assets	3,649.4		3,649.4
Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	4.1	3.5	16.8	12.8
Intersegment Revenues	3.5	2.6	10.3	7.1
Costs of product/services sold	0.1	(0.1)	0.1	0.1
Operations and maintenance	1.1	0.7	3	2.3
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	0	0	0
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	10.9	9.5	24.5	23.7
Other income, net	0		0	0
EBITDA	17.3	15	48.5	41.2
Goodwill	0		0
Total assets	987.5		987.5
Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	561.7	684.4	1,685.6	2,034.8
Intersegment Revenues	(37.1)	(57.4)	(122.1)	(148.6)
Costs of product/services sold	493.2	622.5	1,479.1	1,817
Operations and maintenance	7.4	11.7	26.1	41
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	(2.5)	(0.2)	(26.7)
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
Other income, net	0		0	0
EBITDA	24	(9.7)	58.1	1.5
Goodwill	92.7		92.7
Total assets	617.3		617.3
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	24.9	25.5	84.4	72.8
Gain (loss) on long-lived assets	0	1.1	0.2	1.1
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
Other income, net	0.1		0.3	0.2
EBITDA	(24.8)	(24.4)	(83.9)	(71.5)
Goodwill	0		0
Total assets	36.5		36.5
Crestwood Midstream Partners LP
Net income (loss)	31.2	(7.8)	265.7	1.1
Interest and debt expense, net	30.6	25.1	83.3	73.8
Depreciation, amortization and accretion	55.1	42.7	151.2	137.9
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	823.6	930.2	2,342.2	2,885.7
Intersegment Revenues	0	0	0	0
Costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operations and maintenance	36	29.6	99.3	96
General and administrative	23.7	24.6	80.6	69.9
Gain (loss) on long-lived assets	(0.1)	(3.6)	(2.1)	(27.7)
Gain Loss on Acquisition	0	0	209.4	0
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
EBITDA	116.8	60	500.4	212.9
Goodwill	218.9		218.9		138.6
Total assets	5,448.1		5,448.1		$ 4,462
Crestwood Midstream Partners LP | Gathering and Processing Operations
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	257.8	242.3	639.8	838.1
Intersegment Revenues	33.6	54.8	111.8	141.5
Costs of product/services sold	164.1	205.1	411	701.6
Operations and maintenance	27.5	17.2	70.2	52.7
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	(0.1)	(2.2)	(2.1)	(2.1)
Gain Loss on Acquisition			209.4
Earnings from unconsolidated affiliates, net	(0.5)	5.6	(3.5)	15.8
EBITDA	99.2	78.2	474.2	239
Goodwill	126.2		126.2
Total assets	3,812.4		3,812.4
Crestwood Midstream Partners LP | Storage and Transportation
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	4.1	3.5	16.8	12.8
Intersegment Revenues	3.5	2.6	10.3	7.1
Costs of product/services sold	0.1	(0.1)	0.1	0.1
Operations and maintenance	1.1	0.7	3	2.3
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	0	0	0
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	10.9	9.5	24.5	23.7
EBITDA	17.3	15	48.5	41.2
Goodwill	0		0
Total assets	987.5		987.5
Crestwood Midstream Partners LP | Marketing Supply and Logistics
Segment Reporting Information, Additional Information [Abstract]
Operating revenues	561.7	684.4	1,685.6	2,034.8
Intersegment Revenues	(37.1)	(57.4)	(122.1)	(148.6)
Costs of product/services sold	493.2	622.5	1,479.1	1,817
Operations and maintenance	7.4	11.7	26.1	41
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	(2.5)	(0.2)	(26.7)
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	24	(9.7)	58.1	1.5
Goodwill	92.7		92.7
Total assets	617.3		617.3
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	23.7	24.6	80.6	69.9
Gain (loss) on long-lived assets	0	1.1	0.2	1.1
Gain Loss on Acquisition			0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	(23.7)	$ (23.5)	(80.4)	$ (68.8)
Goodwill	0		0
Total assets	$ 30.9		$ 30.9

Segments (Narrative) (Details)

Segments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Interest, taxes, depreciation and amortization included in earnings from equity method investments	$ 9.7	$ 10.8	$ 32.7	$ 30.4

Revenue Recognition Narrative (

Revenue Recognition Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Revenue Recognition and Deferred Revenue [Abstract]
ASC 606 accounts receivable	$ 243.5	$ 209.7

Revenue Recognition Contract As

Revenue Recognition Contract Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Contract Assets (Non-current)	$ 0.8	$ 0.8	$ 1
Contract Liabilities (Current)	10.3	10.3	12
Contract Liabilities (Non-current)	112.8	112.8	$ 65.4
Contract with Customer, Liability, Revenue Recognized	2.6	8.4
Jackalope Gas Gathering Services, L.L.C.
Business Acquisition [Line Items]
Contract Liabilities (Non-current)	$ 21.5	$ 21.5

Revenue Recognition Disaggregat

Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 823.6	$ 930.2	$ 2,342.2	$ 2,885.7
Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenues	257.8	242.3	639.8	838.1
Revenue including intersegment eliminations	291.4	297.1	751.6	979.6
Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenues	4.1	3.5	16.8	12.8
Revenue including intersegment eliminations	7.6	6.1	27.1	19.9
Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenues	561.7	684.4	1,685.6	2,034.8
Revenue including intersegment eliminations	561.7		1,685.6
Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43.7	32.9	116.8	102.2
Natural Gas Gathering | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43.7	32.9	116.8	102.2
Natural Gas Gathering | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas Gathering | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	20.1	9.4	50.5	28
Crude Oil Gathering | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	20.1	9.4	50.5	28
Crude Oil Gathering | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Gathering | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Water Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21.3	15.5	57.1	41.3
Water Gathering | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21.3	15.5	57.1	41.3
Water Gathering | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Water Gathering | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8.9	2.7	19.5	8.1
Natural Gas Processing | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8.9	2.7	19.5	8.1
Natural Gas Processing | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas Processing | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		2		6.1
NGL Processing | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
NGL Processing | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
NGL Processing | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		2		6.1
Natural Gas Compression
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6.4	7	18.6	22.5
Natural Gas Compression | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6.4	7	18.6	22.5
Natural Gas Compression | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas Compression | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.4	0.8	4.1	3
Crude Oil Storage | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.4	0.4	1.4	1.3
Crude Oil Storage | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.5	0.8	4.4	2.6
Crude Oil Storage | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.6	1.9	4.2	7.4
NGL Storage | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Storage | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Storage | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.6	1.9	4.2	7.4
Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.6	1.5	3.6	3.1
Crude Oil Pipeline | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Pipeline | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.6	2.1	5.8	4.7
Crude Oil Pipeline | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3.5	2.4	9.8	6.5
Crude Oil Transportation | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.2	0.9	5.5	2.1
Crude Oil Transportation | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Transportation | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.4	1.5	4.4	4.4
NGL Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.3	6.6	8.5	26
NGL Transportation | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Transportation | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Transportation | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.3	6.6	8.5	26
Water Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				0.2
Water Transportation | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				0
Water Transportation | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				0
Water Transportation | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				0.2
Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.2	1.5	9.5	7.7
Crude Oil Rail Loading | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Rail Loading | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2.4	2.8	13.5	11.5
Crude Oil Rail Loading | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0.9		3.1
NGL Rail Loading | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
NGL Rail Loading | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
NGL Rail Loading | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0.9		3.1
Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	17.6	41.2	66.1	76.5
Natural Gas Product Sales | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	10.3	13.4	40	38.7
Natural Gas Product Sales | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas Product Sales | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13.8	31.7	44	48.4
Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	529.5	416	1,293.5	1,280.9
Crude Oil Product Sales | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	170	190.3	411.8	667.9
Crude Oil Product Sales | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Crude Oil Product Sales | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	383.6	268.8	965.1	725.4
NGL Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	124.5	307.9	494.9	1,052.1
NGL Product Sales | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8.1	24.6	30.4	67.5
NGL Product Sales | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
NGL Product Sales | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	119.2	291.1	474.6	1,003.1
Other revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.6	0.1	1.4	0.3
Other revenue | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Other revenue | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1.1	0.4	3.4	1.1
Other revenue | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0.4	0	0.7	0
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(37.1)	(57.4)	(122.1)	(148.6)
Intersegment Eliminations | Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Water Gathering
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Natural Gas Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | NGL Processing
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
Intersegment Eliminations | Natural Gas Compression
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Crude Oil Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.5)	(0.4)	(1.7)	(0.9)
Intersegment Eliminations | NGL Storage
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(1)	(0.6)	(2.2)	(1.6)
Intersegment Eliminations | Crude Oil Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.1)	0	(0.1)	0
Intersegment Eliminations | NGL Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Intersegment Eliminations | Water Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax				0
Intersegment Eliminations | Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(1.2)	(1.3)	(4)	(3.8)
Intersegment Eliminations | NGL Rail Loading
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0		0
Intersegment Eliminations | Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(6.5)	(3.9)	(17.9)	(10.6)
Intersegment Eliminations | Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(24.1)	(43.1)	(83.4)	(112.4)
Intersegment Eliminations | NGL Product Sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(2.8)	(7.8)	(10.1)	(18.5)
Intersegment Eliminations | Other revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(0.9)	(0.3)	(2.7)	(0.8)
Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	784.2	850.3	2,158.1	2,675
Revenue from Contract with Customer | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	291.4	297.1	751.6	979.6
Revenue from Contract with Customer | Storage and Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7.6	6.1	27.1	19.9
Revenue from Contract with Customer | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	522.3	604.5	1,501.5	1,824.1
Revenue from Contract with Customer | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(37.1)	(57.4)	(122.1)	(148.6)
Product and Service, Other
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	39.4	79.9	184.1	210.7
Product and Service, Other | Gathering and Processing Operations
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0	0	0	0
Product and Service, Other | Storage and Transportation
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0	0	0	0
Product and Service, Other | Marketing Supply and Logistics
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	39.4	79.9	184.1	210.7
Product and Service, Other | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	$ 0	$ 0	$ 0	$ 0

Revenue Recognition Remaining P

Revenue Recognition Remaining Performance Obligations (Details) $ in Millions	Sep. 30, 2019USD ($)
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	17 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 25.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 97.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 86.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 79.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue Recognition and Deferred Revenue [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 3.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 298.7

Condensed Consolidating Finan_3

Condensed Consolidating Financial Information (Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Apr. 09, 2019	Dec. 31, 2018
Current assets:
Cash	$ 1.6		$ 0.9
Restricted cash, current	0		16.3
Accounts receivable	258.5		251.5
Inventory	43.5		64.6
Total current assets	369.4		379.3
Property, plant and equipment, net	2,839		2,029.7
Operating lease, right-of-use assets, net	58.6
Investment	979.6		1,188.2
Other non-current assets	5.3		4.9
Total assets	5,290.7		4,294.5
Current liabilities:
Accounts payable	198.3		213
Total current liabilities	372.3		332.1
Long-term liabilities:
Long-term debt, less current portion	2,267.2		1,752.4
Operating lease, liability	64.1
Other long-term liabilities	225.3		173.6
Deferred income taxes	2.6		2.6
Total liabilities	2,913		2,260.7
Interest of non-controlling partner in subsidiary (Note 10)	0		181.3
Interest of non-controlling partner in subsidiary	425.1	$ 0
Partners' capital	1,952.6		1,852.5
Total partners’ capital	1,952.6		2,033.8
Total liabilities and capital	5,290.7		4,294.5
Eliminations
Current assets:
Cash	0		0
Restricted cash, current			0
Accounts receivable	0		(16.3)
Inventory	0		0
Other	0		0
Total current assets	0		(16.3)
Property, plant and equipment, net	0		0
Operating lease, right-of-use assets, net	0
Goodwill and intangible assets, net	0		0
Investment in consolidated affiliates	(4,439.5)		(3,800.4)
Investment	0		0
Other non-current assets	0		0
Total assets	(4,439.5)		(3,816.7)
Current liabilities:
Accounts payable	0		(16.3)
Other current liabilities	0		0
Total current liabilities	0		(16.3)
Long-term liabilities:
Long-term debt, less current portion	0		0
Other long-term liabilities	0		0
Deferred income taxes	0		0
Total liabilities	0		(16.3)
Interest of non-controlling partner in subsidiary (Note 10)			0
Interest of non-controlling partner in subsidiary	0
Partners' capital	(4,439.5)		(3,800.4)
Total partners’ capital			(3,800.4)
Total liabilities and capital	(4,439.5)		(3,816.7)
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Current assets:
Cash	0.5		0.2
Restricted cash, current			16.3
Accounts receivable	0		0
Inventory	0		0
Other	0		0
Total current assets	0.5		16.5
Property, plant and equipment, net	0		0
Operating lease, right-of-use assets, net	0
Goodwill and intangible assets, net	0		0
Investment in consolidated affiliates	4,439.5		3,800.4
Investment	0		0
Other non-current assets	0		0
Total assets	4,440		3,816.9
Current liabilities:
Accounts payable	0		16.3
Other current liabilities	54		20
Total current liabilities	54		36.3
Long-term liabilities:
Long-term debt, less current portion	2,267.2		1,752.4
Other long-term liabilities	0		0
Deferred income taxes	0		0
Total liabilities	2,321.2		1,788.7
Interest of non-controlling partner in subsidiary (Note 10)			0
Interest of non-controlling partner in subsidiary	0
Partners' capital	2,118.8		2,028.2
Total partners’ capital			2,028.2
Total liabilities and capital	4,440		3,816.9
Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash	0		0
Restricted cash, current			0
Accounts receivable	233.6		246.3
Inventory	43.5		64.6
Other	65.5		46
Total current assets	342.6		356.9
Property, plant and equipment, net	2,323.1		2,202.3
Operating lease, right-of-use assets, net	55.7
Goodwill and intangible assets, net	661.1		692.4
Investment in consolidated affiliates	0		0
Investment	0		0
Other non-current assets	2		2.1
Total assets	3,384.5		3,253.7
Current liabilities:
Accounts payable	175.7		210.5
Other current liabilities	112		81.8
Total current liabilities	287.7		292.3
Long-term liabilities:
Long-term debt, less current portion	0		0
Other long-term liabilities	173.6		114
Deferred income taxes	0.7		0.6
Total liabilities	462		406.9
Interest of non-controlling partner in subsidiary (Note 10)			0
Interest of non-controlling partner in subsidiary	0
Partners' capital	2,922.5		2,846.8
Total partners’ capital			2,846.8
Total liabilities and capital	3,384.5		3,253.7
Non-Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash	0.4		0
Restricted cash, current			0
Accounts receivable	24.4		19.9
Inventory	0		0
Other	0.3		0
Total current assets	25.1		19.9
Property, plant and equipment, net	677.8		0
Operating lease, right-of-use assets, net	2.9
Goodwill and intangible assets, net	377.7		0
Investment in consolidated affiliates	0		0
Investment	979.6		1,188.2
Other non-current assets	0		0
Total assets	2,063.1		1,208.1
Current liabilities:
Accounts payable	20.1		0
Other current liabilities	7.1		16.2
Total current liabilities	27.2		16.2
Long-term liabilities:
Long-term debt, less current portion	0		0
Other long-term liabilities	93.8		57
Deferred income taxes	0		0
Total liabilities	121		73.2
Interest of non-controlling partner in subsidiary (Note 10)			181.3
Interest of non-controlling partner in subsidiary	425.1
Partners' capital	1,517		953.6
Total partners’ capital			1,134.9
Total liabilities and capital	2,063.1		1,208.1
Crestwood Midstream Partners LP
Current assets:
Cash	0.9		0.2
Restricted cash, current			16.3
Accounts receivable	258		249.9
Inventory	43.5		64.6
Other	65.8		46
Total current assets	368.2		377
Property, plant and equipment, net	3,000.9		2,202.3
Operating lease, right-of-use assets, net	58.6
Goodwill and intangible assets, net	1,038.8		692.4
Investment in consolidated affiliates	0		0
Investment	979.6		1,188.2
Other non-current assets	2		2.1
Total assets	5,448.1		4,462
Current liabilities:
Accounts payable	195.8		210.5
Other current liabilities	173.1		118
Total current liabilities	368.9		328.5
Long-term liabilities:
Long-term debt, less current portion	2,267.2		1,752.4
Other long-term liabilities	267.4		171
Deferred income taxes	0.7		0.6
Total liabilities	2,904.2		2,252.5
Interest of non-controlling partner in subsidiary (Note 10)			181.3
Interest of non-controlling partner in subsidiary	425.1
Partners' capital	2,118.8		2,028.2
Total partners’ capital			2,209.5
Total liabilities and capital	$ 5,448.1		$ 4,462

Condensed Consolidating Finan_4

Condensed Consolidating Financial Information (Statements Of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 823.6	$ 930.2	$ 2,342.2	$ 2,885.7
Costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operating expenses and other:
Operations and maintenance	36	29.6	99.3	96
General and administrative	24.9	25.5	84.4	72.8
Depreciation, amortization and accretion	51.5	39.2	140.6	128.8
Loss on long-lived assets, net	0.1	3.6	2.1	27.7
Gain Loss on Acquisition	0	0	(209.4)	0
Total expenses	112.5	97.9	117	325.3
Operating income (loss)	53.7	4.8	335	41.7
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Interest and debt expense, net	(30.6)	(25.1)	(83.3)	(73.8)
Income (loss) before income taxes	33.6	(5.2)	273	7.6
Provision for income taxes	0	0	(0.3)	(0.2)
Net income (loss)	33.6	(5.2)	272.7	7.4
Net income attributable to non-controlling partner in subsidiary	9.9	4.1	24.5	12.1
Net income (loss) attributable to parent	23.7	(9.3)	248.2	(4.7)
Eliminations
Revenues	(0.7)	0	(0.7)	0
Costs of product/services sold	(0.7)	0	(0.7)	0
Operating expenses and other:
Operations and maintenance	0	0	0	0
General and administrative	0	0	0	0
Depreciation, amortization and accretion	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Gain Loss on Acquisition			0
Total expenses	0	0	0	0
Operating income (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	(62.7)	(27.5)	(363.7)	(104.8)
Income (loss) before income taxes	(62.7)		(363.7)	(104.8)
Provision for income taxes	0		0	0
Net income (loss)	(62.7)	(27.5)	(363.7)	(104.8)
Net income attributable to non-controlling partner in subsidiary	0	0	0	0
Net income (loss) attributable to parent	(62.7)	(27.5)	(363.7)	(104.8)
Non-Guarantor Subsidiaries | Reportable Legal Entities
Revenues	23.2	0	43.4	0
Costs of product/services sold	0.7	0	0.7	0
Operating expenses and other:
Operations and maintenance	5.2	0	12.4	0
General and administrative	0	0	0	0
Depreciation, amortization and accretion	9.6	0	19.3	0
Loss on long-lived assets, net	0	0	0	0
Gain Loss on Acquisition			(209.4)
Total expenses	14.8	0	(177.7)	0
Operating income (loss)	7.7	0	220.4	0
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Interest and debt expense, net	0.1	0	0.1	0
Loss from unconsolidated affiliates	0	0	0	0
Income (loss) before income taxes	18.2		241.5	39.5
Provision for income taxes	0		0	0
Net income (loss)	18.2	15.1	241.5	39.5
Net income attributable to non-controlling partner in subsidiary	9.9	4.1	24.5	12.1
Net income (loss) attributable to parent	8.3	11	217	27.4
Crestwood Midstream Partners LP
Revenues	823.6	930.2	2,342.2	2,885.7
Costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operating expenses and other:
Operations and maintenance	36	29.6	99.3	96
General and administrative	23.7	24.6	80.6	69.9
Depreciation, amortization and accretion	55.1	42.7	151.2	137.9
Loss on long-lived assets, net	0.1	3.6	2.1	27.7
Gain Loss on Acquisition			(209.4)
Total expenses	114.9	100.5	123.8	331.5
Operating income (loss)	51.3	2.2	328.2	35.5
Earnings from unconsolidated affiliates, net	10.4	15.1	21	39.5
Interest and debt expense, net	(30.6)	(25.1)	(83.3)	(73.8)
Loss from unconsolidated affiliates	0	0	0	0
Income (loss) before income taxes	31.1		265.9	1.2
Provision for income taxes	0.1		(0.2)	(0.1)
Net income (loss)	31.2	(7.8)	265.7	1.1
Net income attributable to non-controlling partner in subsidiary	9.9	4.1	24.5	12.1
Net income (loss) attributable to parent	21.3	(11.9)	241.2	(11)
Guarantor Subsidiaries | Reportable Legal Entities
Revenues	801.1	930.2	2,299.5	2,885.7
Costs of product/services sold	657.4	827.5	1,890.2	2,518.7
Operating expenses and other:
Operations and maintenance	30.8	29.6	86.9	96
General and administrative	13	10.3	41.5	27.9
Depreciation, amortization and accretion	45.5	42.7	131.9	137.9
Loss on long-lived assets, net	0.1	3.6	2.1	27.7
Gain Loss on Acquisition			0
Total expenses	89.4	86.2	262.4	289.5
Operating income (loss)	54.3	16.5	146.9	77.5
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
Income (loss) before income taxes	54.3		146.9	77.5
Provision for income taxes	0.1		(0.2)	(0.1)
Net income (loss)	54.4	16.5	146.7	77.4
Net income attributable to non-controlling partner in subsidiary	0	0	0	0
Net income (loss) attributable to parent	54.4	16.5	146.7	77.4
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Revenues	0	0	0	0
Costs of product/services sold	0	0	0	0
Operating expenses and other:
Operations and maintenance	0	0	0	0
General and administrative	10.7	14.3	39.1	42
Depreciation, amortization and accretion	0	0	0	0
Loss on long-lived assets, net	0	0	0	0
Gain Loss on Acquisition			0
Total expenses	10.7	14.3	39.1	42
Operating income (loss)	(10.7)	(14.3)	(39.1)	(42)
Earnings from unconsolidated affiliates, net	0	0	0	0
Interest and debt expense, net	(30.7)	(25.1)	(83.4)	(73.8)
Loss from unconsolidated affiliates	62.7	27.5	363.7	104.8
Income (loss) before income taxes	21.3		241.2	(11)
Provision for income taxes	0		0	0
Net income (loss)	21.3	(11.9)	241.2	(11)
Net income attributable to non-controlling partner in subsidiary	0	0	0	0
Net income (loss) attributable to parent	$ 21.3	$ (11.9)	$ 241.2	$ (11)

Condensed Consolidating Finan_5

Condensed Consolidating Financial Information (Statements Of Cash Flows) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Cash flows from operating activities	$ 278.3	$ 200.9
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	(462.1)	0
Purchases of property, plant and equipment	(347)	(205.7)
Investment in unconsolidated affiliates	(52.3)	(27.7)
Payments for (Proceeds from) Other Investing Activities	(0.4)	8.6
Proceeds from Equity Method Investment, Distribution, Return of Capital	27.3	34.6
Net cash used in investing activities	(834.5)	(190.2)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	1,993.7	1,152.1
Payments on long-term debt	(1,475.2)	(973.7)
Payments on finance leases	(2.6)
Payments on capital leases		(1.1)
Payments for deferred financing costs	(9)	0
Proceeds from Noncontrolling Interests	235	0
Distributions to partners	(129.3)	(128.1)
Taxes paid for unit-based compensation vesting	(10.9)	(6.9)
Other	(0.3)	(0.3)
Net cash provided by (used in) financing activities	540.6	(9.6)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(15.6)	1.1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1.6		$ 17.2	$ 2.4	$ 1.3
Eliminations
Cash flows from operating activities	0	0
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	0
Purchases of property, plant and equipment	0	0
Investment in unconsolidated affiliates	0	0
Net proceeds from sale of assets		0
Capital distributions from consolidated affiliates	239.6	(36.7)
Payments for (Proceeds from) Other Investing Activities	0
Proceeds from Equity Method Investment, Distribution, Return of Capital	0	0
Net cash used in investing activities	239.6	(36.7)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Payments on long-term debt	0	0
Payments on finance leases	0
Payments on capital leases		0
Payments for deferred financing costs	0
Proceeds from Noncontrolling Interests	0
Distributions to partners	0	0
Contributions from (distributions to) parent	(239.6)	36.7
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	0	0
Net cash provided by (used in) financing activities	(239.6)	36.7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0		0	0	0
Non-Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities	59.1	36.4
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	(462.1)
Purchases of property, plant and equipment	(137.4)	0
Investment in unconsolidated affiliates	(52.3)	(27.7)
Net proceeds from sale of assets		0
Capital distributions from consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities	0
Proceeds from Equity Method Investment, Distribution, Return of Capital	27.3	34.6
Net cash used in investing activities	(624.5)	6.9
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Payments on long-term debt	0	0
Payments on finance leases	0
Payments on capital leases		0
Payments for deferred financing costs	0
Proceeds from Noncontrolling Interests	235
Distributions to partners	(15.8)	(6.6)
Contributions from (distributions to) parent	239.6	(36.7)
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	107	0
Net cash provided by (used in) financing activities	565.8	(43.3)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0.4	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0.4		0	0	0
Parent Company, Crestwood Midstream Partners, LP | Reportable Legal Entities
Cash flows from operating activities	(100.2)	(92.1)
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	0
Purchases of property, plant and equipment	0	(3.7)
Investment in unconsolidated affiliates	0	0
Net proceeds from sale of assets		0
Capital distributions from consolidated affiliates	(239.6)	36.7
Payments for (Proceeds from) Other Investing Activities	0
Proceeds from Equity Method Investment, Distribution, Return of Capital	0	0
Net cash used in investing activities	(239.6)	33
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	1,993.7	1,152.1
Payments on long-term debt	(1,474.3)	(972.8)
Payments on finance leases	0
Payments on capital leases		0
Payments for deferred financing costs	(9)
Proceeds from Noncontrolling Interests	0
Distributions to partners	(177.3)	(179)
Contributions from (distributions to) parent	0	0
Taxes paid for unit-based compensation vesting	0	0
Change in intercompany balances	(9.3)	59.8
Net cash provided by (used in) financing activities	323.8	60.1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(16)	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0.5		16.5	2	1
Crestwood Midstream Partners LP
Cash flows from operating activities	281	206.4
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	(462.1)
Purchases of property, plant and equipment	(347)	(205.7)
Investment in unconsolidated affiliates	(52.3)	(27.7)
Net proceeds from sale of assets		8.6
Capital distributions from consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities	(0.4)
Proceeds from Equity Method Investment, Distribution, Return of Capital	27.3	34.6
Net cash used in investing activities	(834.5)	(190.2)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	1,993.7	1,152.1
Payments on long-term debt	(1,475.2)	(973.7)
Payments on finance leases	(2.6)
Payments on capital leases		(1.1)
Payments for deferred financing costs	(9)
Proceeds from Noncontrolling Interests	235
Distributions to partners	(193.1)	(185.6)
Contributions from (distributions to) parent	0	0
Taxes paid for unit-based compensation vesting	(10.9)	(6.9)
Change in intercompany balances	0	0
Net cash provided by (used in) financing activities	537.9	(15.2)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(15.6)	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0.9		16.5	2	1
Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities	322.1	262.1
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	0
Purchases of property, plant and equipment	(209.6)	(202)
Investment in unconsolidated affiliates	0	0
Net proceeds from sale of assets		8.6
Capital distributions from consolidated affiliates	0	0
Payments for (Proceeds from) Other Investing Activities	(0.4)
Proceeds from Equity Method Investment, Distribution, Return of Capital	0	0
Net cash used in investing activities	(210)	(193.4)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	0	0
Payments on long-term debt	(0.9)	(0.9)
Payments on finance leases	(2.6)
Payments on capital leases		(1.1)
Payments for deferred financing costs	0
Proceeds from Noncontrolling Interests	0
Distributions to partners	0	0
Contributions from (distributions to) parent	0	0
Taxes paid for unit-based compensation vesting	(10.9)	(6.9)
Change in intercompany balances	(97.7)	(59.8)
Net cash provided by (used in) financing activities	(112.1)	(68.7)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0	$ 0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 0		$ 0	$ 0	$ 0

Uncategorized Items - crestwood

Label	Element	Value
Partners' Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 7,500,000
Common Unit Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	7,500,000
Crestwood Midstream Partners LP [Member] | Partners' Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	7,500,000
Crestwood Midstream Partners LP [Member] | Common Unit Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 7,500,000