Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Revenues	$ 1,583.8	$ 1,032.7
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 15)	68.5	41.1
Total costs of product/services sold	1,364.4	813.8
Operating expenses and other:
Operations and maintenance	42.4	32.8
General and administrative	43.4	18.7
Depreciation, amortization and accretion	74.8	59.2
Loss on long-lived assets, net	3.8	1.4
Total expenses	164.4	112.1
Operating income (loss)	55.0	106.8
Earnings (loss) from unconsolidated affiliates, net	3.0	(103.7)
Interest and debt expense, net	(36.1)	(36.0)
Gain (Loss) on Extinguishment of Debt	0.0	(5.5)
Other income, net	0.3	0.0
Income (loss) before income taxes	22.2	(38.4)
Benefit for income taxes	0.0	0.1
Net income (loss)	22.2	(38.3)
Net income attributable to non-controlling partner	10.2	10.1
Net income (loss) attributable to parent	12.0	(48.4)
Net income attributable to preferred unit holders	15.0	15.0
Net loss attributable to partners	$ (3.0)	$ (63.4)
Net loss per limited partner unit: (Note 12)
Basic (in dollars per share)	$ (0.04)	$ (0.86)
Diluted (in dollars per share)	$ (0.04)	$ (0.86)
Weighted-average limited partners’ units outstanding:
Basic (units)	86.0	74.1
Diluted (units)	86.0	74.1
Affiliated Entity
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 15)	$ 68.5	$ 41.1
Crestwood Midstream Partners LP
Revenues:
Revenues	1,583.8	1,032.7
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 15)	68.5	41.1
Total costs of product/services sold	1,364.4	813.8
Operating expenses and other:
Operations and maintenance	42.4	32.8
General and administrative	41.7	17.2
Depreciation, amortization and accretion	78.2	62.8
Loss on long-lived assets, net	3.8	1.4
Total expenses	166.1	114.2
Operating income (loss)	53.3	104.7
Earnings (loss) from unconsolidated affiliates, net	3.0	(103.7)
Interest and debt expense, net	(36.1)	(36.0)
Gain (Loss) on Extinguishment of Debt	0.0	(5.5)
Income (loss) before income taxes	20.2	(40.5)
Benefit for income taxes	0.0	0.1
Net income (loss)	20.2	(40.4)
Net income attributable to non-controlling partner	10.2	10.1
Net income (loss) attributable to parent	10.0	(50.5)
Product
Revenues:
Revenues	1,390.5	930.6
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	1,290.8	767.6
Product | Crestwood Midstream Partners LP
Revenues:
Revenues	1,390.5	930.6
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	1,290.8	767.6
Service
Revenues:
Revenues	95.6	97.2
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	5.1	5.1
Service | Crestwood Midstream Partners LP
Revenues:
Revenues	95.6	97.2
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	5.1	5.1
Product, Related Party
Revenues:
Revenues	60.6	4.9
Product, Related Party | Crestwood Midstream Partners LP
Revenues:
Revenues	60.6	4.9
Service, Related Party
Revenues:
Revenues	37.1	0.0
Service, Related Party | Crestwood Midstream Partners LP
Revenues:
Revenues	$ 37.1	$ 0.0