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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			$ 164.0	$ 147.3
Total revenues	$ 1,139.4	$ 1,566.0	3,423.7	4,597.8
Costs of product/services sold	901.6	1,286.8	2,683.6	3,864.4
Operations and maintenance	56.9	55.0	166.7	144.0
General and administrative	30.2	33.9	86.8	103.8
Accounts receivable	350.1		350.1		$ 432.2
Accounts payable	256.9		256.9		305.5
Affiliated Entity
Related Party Transaction [Line Items]
Accounts receivable	0.4		0.4		1.6
Accounts payable	0.1		0.1		3.0
Related Party \| Chord Energy Corporation
Related Party Transaction [Line Items]
Costs of product/services sold		41.5		114.1
General and administrative	0.0	0.0	0.0	1.3
Related Party \| Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
Total revenues		0.1		1.3
Costs of product/services sold		9.2		116.8
Related Party \| Applied Consultants, Inc.
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			1.0
Related Party \| Tres Palacios Holdings LLC
Related Party Transaction [Line Items]
Costs of product/services sold		0.3	0.3	1.7
Related Party \| Crestwood Permian Basin LLC
Related Party Transaction [Line Items]
Costs of product/services sold		0.3	0.2	0.3
Related Party \| Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Total revenues	0.0	140.8	0.0	372.7
Costs of product/services sold	0.0	51.3	0.5	232.9
Operations and maintenance	1.0	2.6	4.6	12.4
General and administrative	5.4	8.5	22.4	23.5
Related Party \| Product
Related Party Transaction [Line Items]
Total revenues	0.0	83.2	0.0	222.7
Costs of product/services sold	0.0	51.3	0.5	232.9
Related Party \| Product \| Chord Energy Corporation
Related Party Transaction [Line Items]
Total revenues		83.0		218.9
Related Party \| Product \| Crestwood Permian Basin Holdings LLC
Related Party Transaction [Line Items]
Total revenues		0.3		3.9
Related Party \| Service
Related Party Transaction [Line Items]
Total revenues	0.0	57.6	0.0	150.0
Related Party \| Service \| Chord Energy Corporation
Related Party Transaction [Line Items]
Total revenues		57.4		148.6
Crestwood Equity Partners LP
Related Party Transaction [Line Items]
General and administrative	9.4	1.6	12.2	4.8
Crestwood Midstream Partners LP
Related Party Transaction [Line Items]
Purchases of property, plant and equipment			164.0	146.6
Total revenues	1,139.4	1,566.0	3,423.7	4,597.8
Costs of product/services sold	901.6	1,286.8	2,683.6	3,864.4
Operations and maintenance	56.9	55.0	166.7	144.0
General and administrative	20.8	32.3	74.6	99.0
Accounts receivable	350.0		350.0		432.2
Accounts payable	256.9		256.9		$ 305.4
Crestwood Midstream Partners LP \| Related Party
Related Party Transaction [Line Items]
General and administrative	1.1	1.1	3.3	3.3
Crestwood Midstream Partners LP \| Related Party \| Product
Related Party Transaction [Line Items]
Total revenues	0.0	83.2	0.0	222.7
Costs of product/services sold	0.0	51.3	0.5	232.9
Crestwood Midstream Partners LP \| Related Party \| Service
Related Party Transaction [Line Items]
Total revenues	0.0	57.6	0.0	150.0
Crestwood LTIP \| Crestwood Midstream Partners LP \| Related Party
Related Party Transaction [Line Items]
Share-based Payment Arrangement, Expense	6.5	9.6	25.7	26.8
Tres Palacios Holdings LLC \| Related Party
Related Party Transaction [Line Items]
Operations and maintenance		1.2	1.5	3.5
Crestwood Permian Basin Holdings LLC \| Related Party
Related Party Transaction [Line Items]
Operations and maintenance		0.4		7.9
Crestwood Permian Basin LLC \| Related Party
Related Party Transaction [Line Items]
Operations and maintenance	$ 1.0	$ 1.0	$ 3.1	$ 1.0