Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Gathering and processing	$ 353.3	$ 206.1	$ 971.7	$ 567.7
Marketing, supply and logistics	502.0	271.3	1,353.7	735.2
Total product revenues	855.3	477.4	2,325.4	1,302.9
Gathering and processing	80.6	72.5	235.0	217.9
Storage and transportation	6.2	18.3	24.7	131.5
Marketing, supply and logistics	13.0	18.7	47.5	71.1
Related party (Note 13)	0.5	0.7	1.4	2.1
Total services revenues	100.3	110.2	308.6	422.6
Total revenues	955.6	587.6	2,634.0	1,725.5
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	374.9	221.1	1,038.1	618.4
Marketing, supply and logistics	468.4	229.1	1,185.6	605.1
Related party (Note 11)	3.7	5.0	11.8	13.7
Total product costs	847.0	455.2	2,235.5	1,237.2
Gathering and processing	0.0	0.0	0.0	0.1
Storage and transportation	0.2	0.1	0.3	4.9
Marketing, supply and logistics	11.3	11.4	35.8	37.9
Total service costs	11.5	11.5	36.1	42.9
Total costs of products/services sold	858.5	466.7	2,271.6	1,280.1
Expenses:
Operations and maintenance	35.5	33.1	103.4	119.9
General and administrative	22.5	18.3	71.6	70.2
Depreciation, amortization and accretion	48.1	50.3	145.2	177.0
Total Expenses	106.1	101.7	320.2	367.1
Goodwill impairment	0.0	0.0	0.0	(109.7)
Operating income (loss)	(15.3)	17.1	35.9	(66.2)
Earnings from unconsolidated affiliates, net	11.5	13.4	29.2	26.1
Interest and debt expense, net	(24.2)	(27.5)	(74.8)	(97.9)
Gains (Losses) on Extinguishment of Debt	0.0	0.0	(37.7)	10.0
Other income, net	0.2	0.2	0.4	0.4
Income (loss) before income taxes	(27.8)	3.2	(47.0)	(127.6)
Provision for income taxes	(0.1)	(0.2)	0.0	(0.2)
Net income (loss)	(27.9)	3.0	(47.0)	(127.8)
Net Income (Loss) Attributable to Noncontrolling Interest	6.4	6.1	18.8	18.0
Net income (loss) attributable to parent	(34.3)	(3.1)	(65.8)	(145.8)
Net income (loss) attributable to preferred unit holders	16.2	6.9	47.5	16.6
Net loss attributable to partners	(50.5)	(10.0)	(113.3)	(162.4)
Subordinated unitholders' interest in net loss	0.0	0.0	0.0	0.0
Common unitholders' interest in net loss	$ (50.5)	$ (10.0)	$ (113.3)	$ (162.4)
Net loss per limited partner unit:
Basic (in dollars per share)	$ (0.72)	$ (0.14)	$ (1.63)	$ (2.35)
Diluted (in dollars per share)	$ (0.72)	$ (0.14)	$ (1.63)	$ (2.35)
Weighted-average limited partners’ units outstanding (in thousands):
Basic (units)	69,725	69,050	69,692	69,002
Dilutive units (units)	0	0	0	0
Diluted (units)	69,725	69,050	69,692	69,002
Crestwood Midstream Partners LP
Revenues:
Gathering and processing	$ 353.3	$ 206.1	$ 971.7	$ 567.7
Marketing, supply and logistics	502.0	271.3	1,353.7	735.2
Total product revenues	855.3	477.4	2,325.4	1,302.9
Gathering and processing	80.6	72.5	235.0	217.9
Storage and transportation	6.2	18.3	24.7	131.5
Marketing, supply and logistics	13.0	18.7	47.5	71.1
Related party (Note 13)	0.5	0.7	1.4	2.1
Total services revenues	100.3	110.2	308.6	422.6
Total revenues	955.6	587.6	2,634.0	1,725.5
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	374.9	221.1	1,038.1	618.4
Marketing, supply and logistics	468.4	229.1	1,185.6	605.1
Related party (Note 11)	3.7	5.0	11.8	13.7
Total product costs	847.0	455.2	2,235.5	1,237.2
Gathering and processing	0.0	0.0	0.0	0.1
Storage and transportation	0.2	0.1	0.3	4.9
Marketing, supply and logistics	11.3	11.4	35.8	37.9
Total service costs	11.5	11.5	36.1	42.9
Total costs of products/services sold	858.5	466.7	2,271.6	1,280.1
Expenses:
Operations and maintenance	35.5	33.6	103.4	116.7
General and administrative	21.4	17.3	69.0	67.5
Depreciation, amortization and accretion	50.9	53.2	153.5	185.2
Total Expenses	107.8	104.1	325.9	369.4
Goodwill impairment	0.0	0.0	0.0	(109.7)
Operating income (loss)	(17.0)	14.7	30.2	(68.5)
Earnings from unconsolidated affiliates, net	11.5	13.4	29.2	26.1
Interest and debt expense, net	(24.2)	(27.5)	(74.8)	(97.9)
Gains (Losses) on Extinguishment of Debt	0.0	0.0	(37.7)	10.0
Income (loss) before income taxes	(29.7)	0.6	(53.1)	(130.3)
Provision for income taxes	(0.1)	0.0	0.0	0.0
Net income (loss)	(29.8)	0.6	(53.1)	(130.3)
Net Income (Loss) Attributable to Noncontrolling Interest	6.4	6.1	18.8	18.0
Net income (loss) attributable to parent	$ (36.2)	$ (5.5)	$ (71.9)	$ (148.3)