Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities
Net income (loss)	$ (43.1)	$ 272.7
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	177.9	140.6
Amortization of debt-related deferred costs	4.9	4.6
Unit-based compensation charges	17.3	41.6
Loss on long-lived assets, net	26.1	2.1
Gain on acquisition	0.0	(209.4)
Goodwill impairment	80.3	0.0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	5.4	6.9
Deferred income taxes	(0.4)	0.0
Changes in operating assets and liabilities	26.9	19.2
Net cash provided by operating activities	295.3	278.3
Investing activities
Acquisitions, net of cash acquired (Note 3)	(162.3)	(462.1)
Purchases of property, plant and equipment	(158.8)	(347.0)
Investments in unconsolidated affiliates	(6.0)	(52.3)
Capital distributions from unconsolidated affiliates	27.8	27.3
Other	1.6	(0.4)
Net cash used in investing activities	(297.7)	(834.5)
Financing activities
Proceeds from the issuance of long-term debt	947.0	1,993.7
Payments on long-term debt	(731.1)	(1,475.2)
Payments on finance leases	(2.4)	(2.6)
Payments for debt-related deferred costs	0.0	(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(136.7)	(129.3)
Distributions to non-controlling partner	(27.8)	(15.8)
Distributions to preferred unitholders	(45.0)	(45.0)
Taxes paid for unit-based compensation vesting	(15.6)	(10.9)
Other	0.0	(0.3)
Net cash provided by (used in) financing activities	(8.8)	540.6
Net change in cash	(11.2)	(15.6)
Cash at beginning of period	25.7	17.2
Cash at end of period	14.5	1.6
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	40.0	(22.9)
Crestwood Midstream Partners LP
Operating activities
Net income (loss)	(50.1)	265.7
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	188.4	151.2
Amortization of debt-related deferred costs	4.9	4.6
Unit-based compensation charges	17.3	41.6
Loss on long-lived assets, net	26.1	2.1
Gain on acquisition	0.0	(209.4)
Goodwill impairment	80.3	0.0
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	5.4	6.9
Deferred income taxes	(0.1)	0.1
Changes in operating assets and liabilities	21.8	18.2
Net cash provided by operating activities	294.0	281.0
Investing activities
Acquisitions, net of cash acquired (Note 3)	(162.3)	(462.1)
Purchases of property, plant and equipment	(158.8)	(347.0)
Investments in unconsolidated affiliates	(6.0)	(52.3)
Capital distributions from unconsolidated affiliates	27.8	27.3
Other	1.6	(0.4)
Net cash used in investing activities	(297.7)	(834.5)
Financing activities
Proceeds from the issuance of long-term debt	947.0	1,993.7
Payments on long-term debt	(731.1)	(1,475.2)
Payments on finance leases	(2.4)	(2.6)
Payments for debt-related deferred costs	0.0	(9.0)
Net proceeds from issuance of non-controlling interest	2.8	235.0
Distributions to partners	(180.9)	(177.3)
Distributions to non-controlling partner	(27.8)	(15.8)
Taxes paid for unit-based compensation vesting	(15.6)	(10.9)
Net cash provided by (used in) financing activities	(8.0)	537.9
Net change in cash	(11.7)	(15.6)
Cash at beginning of period	25.4	16.5
Cash at end of period	13.7	0.9
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	40.0	$ (22.9)
Non-Controlling Partners
Financing activities
Net proceeds from issuance of non-controlling interest	$ 2.8