Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Proceeds from Issuance of Common Limited Partners Units	$ 10.6	$ 0.0
Operating activities
Net loss	(47.0)	(127.8)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and accretion	145.2	177.0
Amortization of debt-related deferred costs	5.4	5.1
Unit-based compensation charges	18.9	13.4
Gain (loss) on long-lived assets	6.3	34.8
Goodwill impairment	0.0	109.7
Gains (Losses) on Extinguishment of Debt	37.7	(10.0)
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(2.5)	(3.9)
Deferred income taxes	(0.7)	(0.9)
Other	(0.3)	0.3
Changes in operating assets and liabilities	65.2	46.8
Net cash provided by operating activities	228.2	244.5
Investing activities
Purchases of property, plant and equipment	(134.4)	(79.3)
Investment in unconsolidated affiliates	(46.5)	(6.2)
Proceeds from Equity Method Investment, Distribution, Return of Capital	35.3	9.2
Net proceeds from sale of assets	1.3	943.1
Net cash provided by (used in) investing activities	(144.3)	866.8
Financing activities
Proceeds from the issuance of long-term debt	2,209.8	1,364.0
Payments on long-term debt	(2,159.2)	(2,279.4)
Payments on capital leases	(2.2)	(1.5)
Payments for debt-related deferred costs	(1.0)	(3.4)
Distributions to partners	125.4	178.4
Distributions paid to non-controlling partners	(11.4)	(11.4)
Taxes paid for unit-based compensation vesting	(5.3)	(0.8)
Other	0.0	0.1
Net cash used in financing activities	(84.1)	(1,110.8)
Net change in cash	(0.2)	0.5
Cash at beginning of period	1.6	0.5
Cash at end of period	1.4	1.0
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	(15.4)	(9.4)
Crestwood Midstream Partners LP
Operating activities
Net loss	(53.1)	(130.3)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and accretion	153.5	185.2
Amortization of debt-related deferred costs	5.4	5.1
Unit-based compensation charges	18.9	13.4
Gain (loss) on long-lived assets	6.3	34.8
Goodwill impairment	0.0	109.7
Gains (Losses) on Extinguishment of Debt	37.7	(10.0)
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(2.5)	(3.9)
Deferred income taxes	0.1	0.2
Other	(0.3)	0.3
Changes in operating assets and liabilities	66.9	46.3
Net cash provided by operating activities	232.9	250.8
Investing activities
Purchases of property, plant and equipment	(134.4)	(79.3)
Investment in unconsolidated affiliates	(46.5)	(6.2)
Proceeds from Equity Method Investment, Distribution, Return of Capital	35.3	9.2
Net proceeds from sale of assets	1.3	943.1
Net cash provided by (used in) investing activities	(144.3)	866.8
Financing activities
Proceeds from the issuance of long-term debt	2,209.8	1,364.0
Payments on long-term debt	(2,159.2)	(2,279.2)
Payments on capital leases	(2.2)	(1.5)
Payments for debt-related deferred costs	(1.0)	(3.4)
Distributions to partners	(130.9)	(196.4)
Taxes paid for unit-based compensation vesting	(5.3)	(0.8)
Other	0.0	0.1
Net cash used in financing activities	(88.8)	(1,117.2)
Net change in cash	(0.2)	0.4
Cash at beginning of period	1.3	0.1
Cash at end of period	1.1	0.5
Supplemental schedule of noncash investing and financing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	$ (15.4)	$ (9.4)