Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Gathering and processing	$ 325.3	$ 199.1	$ 618.4	$ 361.6
Marketing, supply and logistics	421.5	257.4	851.7	463.9
Total product revenues	746.8	456.5	1,470.1	825.5
Gathering and processing	79.4	69.7	154.4	145.4
Storage and transportation	8.5	53.8	18.5	113.2
Marketing, supply and logistics	15.2	21.2	34.5	52.4
Related party (Note 13)	0.4	0.7	0.9	1.4
Total services revenues	103.5	145.4	208.3	312.4
Total revenues	850.3	601.9	1,678.4	1,137.9
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	350.7	221.9	663.2	397.3
Marketing, supply and logistics	363.0	210.0	717.2	376.0
Related party (Note 11)	4.0	4.4	8.1	8.7
Total product costs	717.7	436.3	1,388.5	782.0
Gathering and processing	0.0	0.0	0.0	0.1
Storage and transportation	0.1	1.9	0.1	4.8
Marketing, supply and logistics	11.8	11.8	24.5	26.5
Total service costs	11.9	13.7	24.6	31.4
Total costs of products/services sold	729.6	450.0	1,413.1	813.4
Expenses:
Operations and maintenance	34.2	45.0	67.9	86.8
General and administrative	22.7	28.9	49.1	51.9
Depreciation, amortization and accretion	48.7	64.4	97.1	126.7
Total Expenses	105.6	138.3	214.1	265.4
Goodwill impairment	0.0	0.0	0.0	(109.7)
Operating income (loss)	15.1	(19.1)	51.2	(83.3)
Earnings from unconsolidated affiliates, net	9.6	6.2	17.7	12.7
Interest and debt expense, net	(24.1)	(34.3)	(50.6)	(70.4)
Gains (Losses) on Extinguishment of Debt	(0.4)	10.0	(37.7)	10.0
Other income, net	0.1	0.1	0.2	0.2
Income (loss) before income taxes	0.3	(37.1)	(19.2)	(130.8)
Benefit for income taxes	0.0	0.0	0.1	0.0
Net income (loss)	0.3	(37.1)	(19.1)	(130.8)
Net Income (Loss) Attributable to Noncontrolling Interest	6.3	6.0	12.4	11.9
Net income (loss) attributable to parent	(6.0)	(43.1)	(31.5)	(142.7)
Net income (loss) attributable to preferred unit holders	13.5	8.1	31.3	9.7
Net loss attributable to partners	(19.5)	(51.2)	(62.8)	(152.4)
Subordinated unitholders' interest in net loss	0.0	0.0	0.0	0.0
Common unitholders' interest in net loss	$ (19.5)	$ (51.2)	$ (62.8)	$ (152.4)
Net loss per limited partner unit:
Basic (in dollars per share)	$ (0.28)	$ (0.74)	$ (0.90)	$ (2.21)
Diluted (in dollars per share)	$ (0.28)	$ (0.74)	$ (0.90)	$ (2.21)
Weighted-average limited partners’ units outstanding (in thousands):
Basic (units)	69,655	69,044	69,676	68,978
Dilutive units (units)	0	0	0	0
Diluted (units)	69,655	69,044	69,676	68,978
Crestwood Midstream Partners LP
Revenues:
Gathering and processing	$ 325.3	$ 199.1	$ 618.4	$ 361.6
Marketing, supply and logistics	421.5	257.4	851.7	463.9
Total product revenues	746.8	456.5	1,470.1	825.5
Gathering and processing	79.4	69.7	154.4	145.4
Storage and transportation	8.5	53.8	18.5	113.2
Marketing, supply and logistics	15.2	21.2	34.5	52.4
Related party (Note 13)	0.4	0.7	0.9	1.4
Total services revenues	103.5	145.4	208.3	312.4
Total revenues	850.3	601.9	1,678.4	1,137.9
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	350.7	221.9	663.2	397.3
Marketing, supply and logistics	363.0	210.0	717.2	376.0
Related party (Note 11)	4.0	4.4	8.1	8.7
Total product costs	717.7	436.3	1,388.5	782.0
Gathering and processing	0.0	0.0	0.0	0.1
Storage and transportation	0.1	1.9	0.1	4.8
Marketing, supply and logistics	11.8	11.8	24.5	26.5
Total service costs	11.9	13.7	24.6	31.4
Total costs of products/services sold	729.6	450.0	1,413.1	813.4
Expenses:
Operations and maintenance	34.2	41.4	67.9	83.1
General and administrative	22.1	28.0	47.6	50.2
Depreciation, amortization and accretion	51.4	67.1	102.6	132.0
Total Expenses	107.7	136.5	218.1	265.3
Goodwill impairment	0.0	0.0	0.0	(109.7)
Operating income (loss)	13.0	(17.3)	47.2	(83.2)
Earnings from unconsolidated affiliates, net	9.6	6.2	17.7	12.7
Interest and debt expense, net	(24.1)	(34.3)	(50.6)	(70.4)
Gains (Losses) on Extinguishment of Debt	(0.4)	10.0	(37.7)	10.0
Income (loss) before income taxes	(1.9)	(35.4)	(23.4)	(130.9)
Benefit for income taxes	0.0	(0.2)	0.1	0.0
Net income (loss)	(1.9)	(35.6)	(23.3)	(130.9)
Net Income (Loss) Attributable to Noncontrolling Interest	6.3	6.0	12.4	11.9
Net income (loss) attributable to parent	$ (8.2)	$ (41.6)	$ (35.7)	$ (142.8)