Crestwood Equity Partners (CEQP) 10-Q 2 Nov 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 27, 2023
Document Information [Line Items]
Document Transition Report	false
Document Quarterly Report	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Address, Address Line One	811 Main Street
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Registrant Name	Crestwood Equity Partners LP
Entity File Number	001-34664
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1918951
Entity Central Index Key	0001136352
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		105,098,724
Entity Address, Address Line Two	Suite 3400
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77002
City Area Code	832
Local Phone Number	519-2200
Document Type	10-Q
Document Period End Date	Sep. 30, 2023
Crestwood Midstream Partners LP
Document Information [Line Items]
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Registrant Name	Crestwood Midstream Partners LP
Entity File Number	001-35377
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-1647837
Entity Central Index Key	0001304464
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0
Document Type	10-Q
Document Period End Date	Sep. 30, 2023
Common Units
Document Information [Line Items]
Title of 12(b) Security	Common Units representing limited partnership interests
Trading Symbol	CEQP
Security Exchange Name	NYSE
Preferred Units
Document Information [Line Items]
Title of 12(b) Security	Preferred Units representing limited partnership interests
Trading Symbol	CEQP-P
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash	$ 23.8	$ 7.5
Accounts receivable, less allowance for doubtful accounts of $0.5 at both September 30, 2023 and December 31, 2022	350.1	432.2
Inventory	179.9	122.6
Assets from price risk management activities	38	72.8
Prepaid expenses and other current assets	8.5	18.7
Total current assets	600.3	653.8
Property, plant and equipment	5,467.5	5,353.2
Less: accumulated depreciation	999.6	822.8
Property, plant and equipment, net	4,467.9	4,530.4
Intangible assets	1,234.6	1,306.3
Less: accumulated amortization	277.9	300.7
Intangible assets, net	956.7	1,005.6
Goodwill	223	223
Operating lease right-of-use assets, net	23.3	24.4
Investments in unconsolidated affiliates	77.1	119.5
Other non-current assets	11.5	10.3
Total assets	6,359.8	6,567
Current liabilities:
Accounts payable	256.9	305.5
Accrued expenses and other liabilities	183.6	180.8
Liabilities from price risk management activities	17.6	23.9
Total current liabilities	458.1	510.2
Long-term debt, less current portion	3,302.5	3,378.3
Other long-term liabilities	323.4	333.4
Deferred income taxes	3.4	3.5
Total liabilities	4,087.4	4,225.4
Commitments and contingencies (Note 9)
Interest of non-controlling partner in subsidiary	456	434.4
Partners’ capital:
Crestwood Equity Partners LP partners’ capital (105,099,889 and 104,646,374 common units issued and outstanding at September 30, 2023 and December 31, 2022)	1,204.4	1,295.2
Preferred units (71,257,445 units issued and outstanding at both September 30, 2023 and December 31, 2022)	612	612
Total partners’ capital	1,816.4	1,907.2
Total liabilities and capital	6,359.8	6,567
Crestwood Midstream Partners LP
Assets
Cash	23.4	7.1
Accounts receivable, less allowance for doubtful accounts of $0.5 at both September 30, 2023 and December 31, 2022	350	432.2
Inventory	179.9	122.6
Assets from price risk management activities	38	72.8
Prepaid expenses and other current assets	8.5	18.7
Total current assets	599.8	653.4
Property, plant and equipment	5,464.3	5,350
Less: accumulated depreciation	999.3	822.6
Property, plant and equipment, net	4,465	4,527.4
Intangible assets	1,234.6	1,306.3
Less: accumulated amortization	277.9	300.7
Intangible assets, net	956.7	1,005.6
Goodwill	223	223
Operating lease right-of-use assets, net	23.3	24.4
Investments in unconsolidated affiliates	77.1	119.5
Other non-current assets	9.3	8.1
Total assets	6,354.2	6,561.4
Current liabilities:
Accounts payable	256.9	305.4
Accrued expenses and other liabilities	182.7	179.5
Liabilities from price risk management activities	17.6	23.9
Total current liabilities	457.2	508.8
Long-term debt, less current portion	3,302.5	3,378.3
Other long-term liabilities	321.3	330.3
Deferred income taxes	2.5	2.3
Total liabilities	4,083.5	4,219.7
Commitments and contingencies (Note 9)
Interest of non-controlling partner in subsidiary	456	434.4
Partners’ capital:
Partners' capital	1,814.7	1,907.3
Total liabilities and capital	$ 6,354.2	$ 6,561.4

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Allowance for doubtful accounts	$ 0.5
Limited Partners' Capital Account, Units Issued	105,099,889	104,646,374
Limited Partners' Capital Account, Units Outstanding	105,099,889	104,646,374
Preferred Units, Issued	71,257,445	71,257,445
Preferred Units, Outstanding	71,257,445	71,257,445
Crestwood Midstream Partners LP
Allowance for doubtful accounts	$ 0.5	$ 0.5

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 1,139.4	$ 1,566	$ 3,423.7	$ 4,597.8
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	901.6	1,286.8	2,683.6	3,864.4
Operating expenses and other:
Operations and maintenance	56.9	55	166.7	144
General and administrative	30.2	33.9	86.8	103.8
Depreciation, amortization and accretion	80.2	86.9	242.7	242.3
Loss on long-lived assets, net	2.6	175.9	4.8	186.9
Gain on acquisition	0	(75.3)	0	(75.3)
Total expenses	169.9	276.4	501	601.7
Operating income (loss)	67.9	2.8	239.1	131.7
Earnings from unconsolidated affiliates, net	1.1	3.2	135.2	12.2
Interest and debt expense, net	(56.9)	(47.6)	(167.9)	(123.8)
Other income, net	0.2	0	0.3	0.2
Income (loss) before income taxes	12.3	(41.6)	206.7	20.3
Provision for income taxes	(0.2)	(1.4)	(1.1)	(1.7)
Net income (loss)	12.1	(43)	205.6	18.6
Net income attributable to non-controlling partner	32.1	10.3	52.6	30.8
Net income (loss) attributable to parent	(20)	(53.3)	153	(12.2)
Net income attributable to preferred unit holders	15.1	15	45.1	45
Net income (loss) attributable to partners	$ (35.1)	$ (68.3)	$ 107.9	$ (57.2)
Net income (loss) per limited partner unit: (Note 12)
Basic (in dollars per share)	$ (0.33)	$ (0.64)	$ 1.03	$ (0.59)
Diluted (in dollars per share)	$ (0.33)	$ (0.64)	$ 0.99	$ (0.59)
Weighted-average limited partners’ units outstanding:
Basic (units)	105.2	107.1	105.2	97.1
Dilutive units (units)	0	0	3.9	0
Diluted (units)	105.2	107.1	109.1	97.1
Crestwood Midstream Partners LP
Revenues:
Total revenues	$ 1,139.4	$ 1,566	$ 3,423.7	$ 4,597.8
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	901.6	1,286.8	2,683.6	3,864.4
Operating expenses and other:
Operations and maintenance	56.9	55	166.7	144
General and administrative	20.8	32.3	74.6	99
Depreciation, amortization and accretion	80.1	86.8	242.5	248
Loss on long-lived assets, net	2.6	247.6	4.8	311.9
Gain on acquisition	0	(75.3)	0	(75.3)
Total expenses	160.4	346.4	488.6	727.6
Operating income (loss)	77.4	(67.2)	251.5	5.8
Earnings from unconsolidated affiliates, net	1.1	3.2	135.2	12.2
Interest and debt expense, net	(56.9)	(47.6)	(167.9)	(123.8)
Income (loss) before income taxes	21.6	(111.6)	218.8	(105.8)
Provision for income taxes	(0.2)	(1.4)	(1)	(1.6)
Net income (loss)	21.4	(113)	217.8	(107.4)
Net income attributable to non-controlling partner	32.1	10.3	52.6	30.8
Net income (loss) attributable to parent	(10.7)	(123.3)	165.2	(138.2)
Crestwood Midstream Partners LP | Related Party
Operating expenses and other:
General and administrative	1.1	1.1	3.3	3.3
Product | Nonrelated Party
Revenues:
Total revenues	989.2	1,332.8	2,991.5	3,938.3
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	898.1	1,228.6	2,668.1	3,613.4
Product | Related Party
Revenues:
Total revenues	0	83.2	0	222.7
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	0	51.3	0.5	232.9
Product | Crestwood Midstream Partners LP | Nonrelated Party
Revenues:
Total revenues	989.2	1,332.8	2,991.5	3,938.3
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	898.1	1,228.6	2,668.1	3,613.4
Product | Crestwood Midstream Partners LP | Related Party
Revenues:
Total revenues	0	83.2	0	222.7
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	0	51.3	0.5	232.9
Service | Nonrelated Party
Revenues:
Total revenues	150.2	92.4	432.2	286.8
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	3.5	6.9	15	18.1
Service | Related Party
Revenues:
Total revenues	0	57.6	0	150
Service | Crestwood Midstream Partners LP | Nonrelated Party
Revenues:
Total revenues	150.2	92.4	432.2	286.8
Costs of product/services sold (exclusive of items shown separately below):
Costs of product/services sold	3.5	6.9	15	18.1
Service | Crestwood Midstream Partners LP | Related Party
Revenues:
Total revenues	$ 0	$ 57.6	$ 0	$ 150

Consolidated Statement of Partn

Consolidated Statement of Partners' Capital - USD ($) $ in Millions	Total	Preferred Units	Common unit	Partners' Capital	Crestwood Midstream Partners LP	Crestwood Midstream Partners LP Partners' Capital	Preferred Units	Common Units	Common Stock
Preferred units, beginning balance (in units) at Dec. 31, 2021							71,300,000
Partner units, beginning balance (in units) at Dec. 31, 2021								63,000,000
Beginning balance at Dec. 31, 2021		$ 612	$ 487.6	$ 1,099.6		$ 1,232.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(60.9)	(75.9)		(238.1)
Issuance of common units (in shares)								33,800,000
Issuance of common units (Note 3)			930	930
Unit-based compensation charges (in shares)								1,600,000
Unit-based compensation			13	13		13
Taxes paid for unit-based compensation vesting (in shares)								(500,000)
Taxes paid for unit-based compensation vesting			(14.9)	(14.9)		(14.9)
Other (in shares)								100,000
Other			2.2	2.2		0.1
Net income (loss) attributable to parent		15	(3)	12		10
Preferred units, ending balance (in units) at Mar. 31, 2022							71,300,000
Partner units, ending balance (in units) at Mar. 31, 2022								98,000,000
Ending Balance at Mar. 31, 2022		612	1,354	1,966		2,092.4
Preferred units, beginning balance (in units) at Dec. 31, 2021							71,300,000
Partner units, beginning balance (in units) at Dec. 31, 2021								63,000,000
Beginning balance at Dec. 31, 2021		612	487.6	1,099.6		1,232.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss) attributable to parent	$ (12.2)				$ (138.2)
Preferred units, ending balance (in units) at Sep. 30, 2022							71,300,000
Partner units, ending balance (in units) at Sep. 30, 2022								104,700,000
Ending Balance at Sep. 30, 2022		612	1,326.2	1,938.2		1,937.1
Preferred units, beginning balance (in units) at Mar. 31, 2022							71,300,000
Partner units, beginning balance (in units) at Mar. 31, 2022								98,000,000
Beginning balance at Mar. 31, 2022		612	1,354	1,966		2,092.4
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(64.2)	(79.2)		(81.6)
Unit-based compensation			8.6	8.6		8.6
Taxes paid for unit-based compensation vesting			(0.7)	(0.7)		(0.7)
Other			(0.4)	(0.4)
Net income (loss) attributable to parent		15	14.1	29.1		(24.9)
Preferred units, ending balance (in units) at Jun. 30, 2022							71,300,000
Partner units, ending balance (in units) at Jun. 30, 2022								98,000,000
Ending Balance at Jun. 30, 2022		612	1,311.4	1,923.4		1,993.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(71.6)	(86.6)		(217.9)
Issuance of common units (in shares)									11,300,000
Issuance of common units (Note 3)			270.8	270.8
Purchase of common units (Note 11)			(123.7)	(123.7)
Retirement of common units (Note 11) (in shares)								(4,600,000)
Unit-based compensation			8	8		8
Taxes paid for unit-based compensation vesting			(0.2)	(0.2)		(0.2)
Other			(0.2)	(0.2)
Net income (loss) attributable to parent	$ (53.3)	15	(68.3)	(53.3)	(123.3)	(123.3)
Preferred units, ending balance (in units) at Sep. 30, 2022							71,300,000
Partner units, ending balance (in units) at Sep. 30, 2022								104,700,000
Ending Balance at Sep. 30, 2022		612	1,326.2	1,938.2		1,937.1
Preferred units, beginning balance (in units) at Dec. 31, 2022	71,257,445						71,300,000
Partner units, beginning balance (in units) at Dec. 31, 2022								104,600,000
Beginning balance at Dec. 31, 2022		612	1,295.2	1,907.2	1,907.3	1,907.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(68.9)	(83.9)		(85.9)
Unit-based compensation charges (in shares)								1,100,000
Unit-based compensation			11.8	11.8		11.8
Taxes paid for unit-based compensation vesting (in shares)								(500,000)
Taxes paid for unit-based compensation vesting			(14.8)	(14.8)		(14.8)
Other (in shares)								100,000
Other			1.6	1.6
Net income (loss) attributable to parent		15	16.4	31.4		32.8
Preferred units, ending balance (in units) at Mar. 31, 2023							71,300,000
Partner units, ending balance (in units) at Mar. 31, 2023								105,300,000
Ending Balance at Mar. 31, 2023		612	1,241.3	1,853.3		1,851.2
Preferred units, beginning balance (in units) at Dec. 31, 2022	71,257,445						71,300,000
Partner units, beginning balance (in units) at Dec. 31, 2022								104,600,000
Beginning balance at Dec. 31, 2022		612	1,295.2	1,907.2	1,907.3	1,907.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss) attributable to parent	$ 153				165.2
Preferred units, ending balance (in units) at Sep. 30, 2023	71,257,445						71,300,000
Partner units, ending balance (in units) at Sep. 30, 2023								105,100,000
Ending Balance at Sep. 30, 2023		612	1,204.4	1,816.4	1,814.7	1,814.7
Preferred units, beginning balance (in units) at Mar. 31, 2023							71,300,000
Partner units, beginning balance (in units) at Mar. 31, 2023								105,300,000
Beginning balance at Mar. 31, 2023		612	1,241.3	1,853.3		1,851.2
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15)	(68.9)	(83.9)		(85.4)
Unit-based compensation			9.2	9.2		9.2
Taxes paid for unit-based compensation vesting (in shares)								(100,000)
Taxes paid for unit-based compensation vesting			(0.8)	(0.8)		(0.8)
Other			(0.2)	(0.2)
Net income (loss) attributable to parent		15	126.6	141.6		143.1
Preferred units, ending balance (in units) at Jun. 30, 2023							71,300,000
Partner units, ending balance (in units) at Jun. 30, 2023								105,200,000
Ending Balance at Jun. 30, 2023		612	1,307.2	1,919.2		1,917.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Distributions to partners		(15.1)	(68.9)	(84)		(93.5)
Unit-based compensation			6.5	6.5		6.5
Taxes paid for unit-based compensation vesting (in shares)								(100,000)
Taxes paid for unit-based compensation vesting			(4.9)	(4.9)		(4.9)
Other			(0.4)	(0.4)
Net income (loss) attributable to parent	$ (20)	15.1	(35.1)	(20)	(10.7)	(10.7)
Preferred units, ending balance (in units) at Sep. 30, 2023	71,257,445						71,300,000
Partner units, ending balance (in units) at Sep. 30, 2023								105,100,000
Ending Balance at Sep. 30, 2023		$ 612	$ 1,204.4	$ 1,816.4	$ 1,814.7	$ 1,814.7

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities
Net income	$ 205.6	$ 18.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	242.7	242.3
Amortization of debt-related deferred costs and fair value adjustment	2.5	1.7
Unit-based compensation	25.7	26.8
Loss on long-lived assets, net	4.8	186.9
Gain on acquisition	0	(75.3)
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(133.3)	(0.9)
Deferred income taxes	(0.1)	1.1
Other	0.1	0
Changes in operating assets and liabilities	30.5	(123.9)
Net cash provided by operating activities	378.5	277.3
Investing activities
Acquisitions, net of cash acquired (Note 3)	0	(604.3)
Purchases of property, plant and equipment	(164)	(147.3)
Investments in unconsolidated affiliates	(7.2)	(90.2)
Capital distributions from unconsolidated affiliates	4.4	9.4
Net proceeds from sale of assets, including equity investments	188.2	315.2
Net cash provided by (used in) investing activities	21.4	(517.2)
Financing activities
Proceeds from the issuance of long-term debt	2,058.3	3,072
Payments on long-term debt	(2,127.4)	(2,393.1)
Payments on finance leases	(2)	(31.3)
Payments for deferred financing costs	(9.2)	(1.8)
Purchase of common units	0	(123.7)
Distributions to partners	(206.7)	(196.7)
Distributions to non-controlling partner	(31)	(31)
Distributions to preferred unitholders	(45.1)	(45)
Taxes paid for unit-based compensation vesting	(20.5)	(15.8)
Other	0	(0.6)
Net cash provided by (used in) financing activities	(383.6)	233
Net change in cash	16.3	(6.9)
Cash at beginning of period	7.5	13.3
Cash at end of period	23.8	6.4
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	(18.4)	19.9
Crestwood Midstream Partners LP
Operating activities
Net income	217.8	(107.4)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	242.5	248
Amortization of debt-related deferred costs and fair value adjustment	2.5	1.7
Unit-based compensation	25.7	26.8
Loss on long-lived assets, net	4.8	311.9
Gain on acquisition	0	(75.3)
Earnings from unconsolidated affiliates, net, adjusted for cash distributions received	(133.3)	(0.9)
Deferred income taxes	0.2	1.2
Other	0.1	0
Changes in operating assets and liabilities	31.2	(123.9)
Net cash provided by operating activities	391.5	282.1
Investing activities
Acquisitions, net of cash acquired (Note 3)	0	(602.7)
Purchases of property, plant and equipment	(164)	(146.6)
Investments in unconsolidated affiliates	(7.2)	(90.2)
Capital distributions from unconsolidated affiliates	4.4	9.4
Net proceeds from sale of assets, including equity investments	188.2	315.2
Net cash provided by (used in) investing activities	21.4	(514.9)
Financing activities
Proceeds from the issuance of long-term debt	2,058.3	3,072
Payments on long-term debt	(2,127.4)	(2,393.1)
Payments on finance leases	(2)	(31.3)
Payments for deferred financing costs	(9.2)	(1.8)
Contributions from partner	0	164.3
Distributions to partners	(264.8)	(537.6)
Distributions to non-controlling partner	(31)	(31)
Taxes paid for unit-based compensation vesting	(20.5)	(15.8)
Net cash provided by (used in) financing activities	(396.6)	225.7
Net change in cash	16.3	(7.1)
Cash at beginning of period	7.1	12.9
Cash at end of period	23.4	5.8
Supplemental schedule of noncash investing activities
Net change to property, plant and equipment through accounts payable and accrued expenses	$ (18.4)	$ 19.9

Organization and Business Descr

Organization and Business Description	9 Months Ended
	Sep. 30, 2023
Disclosure Partnership Organization And Basis Of Presentation Narrative [Abstract]
Organization and Business Description	Organization and Business Description The accompanying notes to the consolidated financial statements apply to Crestwood Equity Partners LP (Crestwood Equity or CEQP) and Crestwood Midstream Partners LP (Crestwood Midstream or CMLP). The accompanying consolidated financial statements and related notes should be read in conjunction with our 2022 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 27, 2023. The financial information as of September 30, 2023 and for the three and nine months ended September 30, 2023 and 2022, is unaudited. The consolidated balance sheets as of December 31, 2022 were derived from the audited balance sheets filed in our 2022 Annual Report on Form 10-K. Unless otherwise indicated, references in this report to “we,” “us,” “our,” “ours,” “our company,” the “Partnership,” the “Company,” “Crestwood Equity,” “CEQP,” and similar terms refer to either Crestwood Equity Partners LP itself or Crestwood Equity Partners LP and its consolidated subsidiaries, as the context requires. Unless otherwise indicated, references to “Crestwood Midstream” and “CMLP” refer to Crestwood Midstream Partners LP and its consolidated subsidiaries, as the context requires. Organization Energy Transfer LP Merger . On November 3, 2023, Crestwood Equity is expected to merge with and into a direct wholly-owned subsidiary of Energy Transfer LP (Energy Transfer) in an all-equity transaction valued at approximately $7.1 billion (the Energy Transfer Merger). On August 16, 2023, Crestwood Equity entered into a merger agreement with Energy Transfer pursuant to which each Crestwood Equity common unit representing limited partner interests in Crestwood Equity issued and outstanding immediately prior to the Energy Transfer Merger will be converted into the right to receive 2.07 common units representing limited partner interests in Energy Transfer. Each preferred unit representing limited partner interests in Crestwood Equity issued and outstanding immediately prior to the Energy Transfer Merger will, at the election of the holder of such preferred unit, be (i) converted into a preferred unit of Energy Transfer that has substantially similar terms, including with respect to economics and structural protections, as the preferred units of Crestwood Equity, (ii) redeemed in exchange for cash, at a price of 108% of the preferred unit price plus accrued and unpaid distributions to the date of such redemption, or (iii) converted into common units, at the then-applicable conversion ratio (one common unit for 10 preferred), subject to the payment of any accrued but unpaid distributions prior to Energy Transfer Merger. In connection with the Energy Transfer Merger and at the direction of Energy Transfer, Crestwood Equity conducted a consent solicitation pursuant to which Crestwood Equity solicited consent from the preferred unitholders to approve an amendment to its Sixth Amended and Restated Agreement of Limited Partnership. Pursuant to the proposed amendment, among other things, (i) the preferred unitholders electing a cash redemption in the Energy Transfer Merger would receive such cash redemption price as increased from 101% to 108% of the preferred unit price; and (ii) the preferred unitholders electing to receive preferred units of Energy Transfer would receive such preferred units of Energy Transfer with terms similar to Energy Transfer’s other outstanding series of preferred units. Crestwood Equity received the consents from the preferred unitholders necessary to approve the proposed amendment and therefore, the proposed amendment will be adopted at the closing of the Energy Transfer Merger. For more information regarding the merger and the merger agreement, see our Current Report on Form 8-K filed with the SEC on August 16, 2023 and our definitive merger proxy statement on Schedule 14A filed with the SEC on September 29, 2023. Crestwood Equity Partners LP . CEQP is a publicly-traded Delaware limited partnership, and its common units are listed on the New York Stock Exchange (NYSE) under the ticker symbol “CEQP” and its preferred units are listed on the NYSE under the ticker symbol “CEQP-P.” In connection with the consummation of the Energy Transfer Merger, we requested that the NYSE delist our common and preferred units and, as a result, trading of our common and preferred units will be suspended on November 3, 2023. We also requested that the NYSE file a Form 25 with the SEC notifying the SEC of the delisting of our common and preferred units and the withdrawal of registration of our common and preferred units under Section 12(b) of the Exchange Act. Following the effectiveness of the Form 25, we intend to file with the SEC a Form 15 regarding the termination of registration of our common and preferred units under the Exchange Act and the suspension of reporting obligations with respect to our common and preferred units. Crestwood Midstream Partners LP . Crestwood Equity owns a 99.9% limited partnership interest in Crestwood Midstream and Crestwood Gas Services GP LLC, a wholly-owned subsidiary of Crestwood Equity, owns a 0.1% limited partnership interest in Crestwood Midstream. Crestwood Midstream GP LLC, a wholly-owned subsidiary of Crestwood Equity, owns the non-economic general partnership interest of Crestwood Midstream. Business Description Crestwood Equity develops, acquires, owns or controls, and operates primarily fee-based assets and operations within the energy midstream sector. We provide broad-ranging infrastructure solutions across the value chain to service premier liquids-rich natural gas and crude oil shale plays across North America. We own and operate a diversified portfolio of natural gas liquids (NGLs), crude oil, natural gas and produced water gathering, processing, storage, disposal and transportation assets that connect fundamental energy supply with energy demand across the United States. Crestwood Equity is a holding company and all of its consolidated operating assets are owned by or through its wholly-owned subsidiary, Crestwood Midstream. See Note 13 for information regarding our operating and reporting segments.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation Our consolidated financial statements are prepared in accordance with Generally Accepted Accounting Principles in the United States (U.S. GAAP) and include the accounts of all consolidated subsidiaries after the elimination of all intercompany accounts and transactions. In management’s opinion, all necessary adjustments to fairly present our results of operations, financial position and cash flows for the periods presented have been made and all such adjustments are of a normal and recurring nature. Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted pursuant to the rules and regulations of the SEC. Significant Accounting Policies There were no material changes in our significant accounting policies from those described in our 2022 Annual Report on Form 10-K.

Acquisition and Divestitures

Acquisition and Divestitures	9 Months Ended
	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisition and Divestitures	Acquisitions and Divestitures Oasis Merger On February 1, 2022, we completed the merger with Oasis Midstream Partners LP (Oasis Midstream), in an equity and cash transaction which was valued at approximately $1.8 billion (the Oasis Merger). Pursuant to the merger agreement, Oasis Petroleum Inc., now known as Chord Energy Corporation (Chord), received $150 million in cash plus approximately 20.9 million newly issued CEQP common units in exchange for its 33.8 million common units held in Oasis Midstream. In addition, Oasis Midstream’s public unitholders received approximately 12.9 million newly issued CEQP common units in exchange for the approximately 14.8 million Oasis Midstream common units held by them. Additionally, under the merger agreement, Chord received a $10 million cash payment in exchange for its ownership of the general partner of Oasis Midstream. Sendero and CPJV Acquisitions On July 11, 2022, we acquired Sendero Midstream Partners LP (Sendero), a privately-held midstream company, for cash consideration of approximately $631.2 million (Sendero Acquisition). Additionally, on July 11, 2022, we acquired First Reserve Management, L.P.’s (First Reserve) 50% equity interest in Crestwood Permian Basin Holdings LLC (Crestwood Permian) in exchange for approximately $5.9 million in cash and approximately 11.3 million newly issued CEQP common units (CPJV Acquisition). The fair value of the assets acquired and liabilities assumed in the CPJV Acquisition exceeded the sum of the cash consideration paid, the fair value of the common units issued and the historical book value of our 50% equity interest in Crestwood Permian (which was remeasured at fair value and derecognized) and, as a result, we recognized a gain of approximately $75.3 million, which is included in gain on acquisition in our consolidated statements of operations. Prior to the CPJV Acquisition, we owned a 50% equity interest in Crestwood Permian, which we accounted for under the equity method of accounting and we reflected this equity investment in our gathering and processing south segment. As a result of the CPJV Acquisition, we control and own 100% of the equity interests in Crestwood Permian. Divestitures Barnett On July 1, 2022, we sold our assets in the Barnett Shale to EnLink Midstream, LLC for approximately $290 million, and during the nine months ended September 30, 2022, Crestwood Midstream recorded a loss on the sale of approximately $53.3 million, which is included in loss on long-lived assets, net on its consolidated statement of operations. Crestwood Equity’s historical carrying value of the property, plant and equipment related to our Barnett Shale assets was less than the sales proceeds due to historical impairments previously recorded on the property, plant and equipment by Crestwood Equity and as a result, during the three months ended September 30, 2022, Crestwood Equity recorded a gain on the sale of approximately $72 million, which is included in loss on long-lived assets, net on its consolidated statements of operations. Marcellus In October 2022, we sold our assets in the Marcellus Shale to Antero Midstream Corporation for approximately $206 million, and during the three months ended September 30, 2022, we recorded a loss on long-lived assets of approximately $248.2 million for the difference between the historical carrying value of the net assets and liabilities to be sold and the proceeds received from the sale. Other Divestitures In August 2023, we sold our transportation assets for approximately $8.0 million, and during the three months ended September 30, 2023, we recorded a loss on long-lived assets of approximately $2.5 million related to the sale of these assets. During the nine months ended September 30, 2022, we recorded a loss on long-lived assets of approximately $7.0 million related to the sale of parts inventory related to our legacy Granite Wash operations.

Certain Balance Sheet Informati

Certain Balance Sheet Information	9 Months Ended
	Sep. 30, 2023
Balance Sheet Related Disclosures [Abstract]
Certain Balance Sheet Information	Certain Balance Sheet Information Accrued Expenses and Other Liabilities Accrued expenses and other liabilities consisted of the following ( in millions ): September 30, December 31, 2023 2022 CMLP Accrued expenses $ 56.9 $ 66.5 Accrued property taxes 10.5 8.4 Income tax payable 0.7 0.9 Interest payable 64.4 43.2 Accrued additions to property, plant and equipment 16.3 35.6 Operating leases 11.1 10.9 Finance leases 1.7 1.9 Contract liabilities 20.3 11.7 Asset retirement obligations 0.8 0.4 Total CMLP accrued expenses and other liabilities $ 182.7 $ 179.5 CEQP Accrued expenses 0.9 1.2 Income tax payable — 0.1 Total CEQP accrued expenses and other liabilities $ 183.6 $ 180.8 Other Long-Term Liabilities Other long-term liabilities consisted of the following ( in millions ): September 30, December 31, 2023 2022 CMLP Contract liabilities $ 207.4 $ 212.3 Intangible liabilities, net 45.5 50.0 Asset retirement obligations 38.5 36.4 Operating leases 15.4 17.4 Other 14.5 14.2 Total CMLP other long-term liabilities $ 321.3 $ 330.3 CEQP Other 2.1 3.1 Total CEQP other long-term liabilities $ 323.4 $ 333.4

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	9 Months Ended
	Sep. 30, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Tres Holdings Divestiture On February 20, 2023, we and Brookfield Infrastructure Group (Brookfield) entered into an agreement with a subsidiary of Enbridge, Inc. to sell each of our respective interests in Tres Palacios Holdings LLC (Tres Holdings) for approximately $335 million, plus working capital adjustments. The sale was completed on April 3, 2023 and we received net cash proceeds of approximately $178 million. We recorded a gain on the sale of approximately $132 million, which is reflected as an increase in our earnings from unconsolidated affiliates in our consolidated statements of operations during the nine months ended September 30, 2023. Net Investments and Earnings (Loss) of Unconsolidated Affiliates Our net investments in and earnings (loss) from our unconsolidated affiliates are as follows ( in millions ): Investment Earnings (Loss) from Earnings (Loss) from Three Months Ended Nine Months Ended September 30, December 31, September 30, September 30, 2023 2022 2023 2022 2023 2022 Crestwood Permian Basin LLC (1) $ 74.0 $ 76.5 $ 1.1 $ 0.7 $ 2.0 $ 0.7 Tres Palacios Holdings LLC (2) — 39.8 0.1 1.3 133.6 3.2 Powder River Basin Industrial Complex, LLC (3) 3.1 3.2 (0.1) (0.1) (0.4) (0.4) Crestwood Permian Basin Holdings LLC (4) — — — 1.3 — 8.7 Total $ 77.1 $ 119.5 $ 1.1 $ 3.2 $ 135.2 $ 12.2 (1) As discussed in Note 3, in July 2022, we acquired the remaining 50% equity interest in Crestwood Permian, whose operations included its 50% equity interest in Crestwood Permian Basin LLC (Crestwood Permian Basin). As of September 30, 2023, our equity in the underlying net assets of Crestwood Permian Basin was less than the carrying value of our investment balance by approximately $2.2 million. During the three and nine months ended September 30, 2023, we recorded amortization of less than $0.1 million and approximately $0.1 million, respectively, related to this basis difference, which is reflected as a decrease in our earnings from unconsolidated affiliates in our consolidated statements of operations, and during both the three and nine months ended September 30, 2022, we recorded amortization of less than $0.1 million related to this basis difference. Our Crestwood Permian Basin investment is included in our gathering and processing south segment. (2) In April 2023, we sold our equity interest in Tres Holdings and we recorded a gain on the sale of approximately $132 million, which eliminated our $19.9 million historical basis difference between our investment balance and our equity in the underlying net assets of Tres Holdings. During the nine months ended September 30, 2023, we recorded amortization of approximately $0.3 million related to this excess basis, which is reflected as an increase in our earnings from unconsolidated affiliates in our consolidated statements of operations, and during the three and nine months ended September 30, 2022, we recorded amortization of approximately $0.3 million and $0.9 million related to this excess basis. Our Tres Holdings investment was included in our storage and logistics segment. See Tres Holdings Divestiture above for a further discussion of the sale of our Tres Holdings equity investment. (3) As of September 30, 2023, our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) approximates the carrying value of our investment balance. Our PRBIC investment is included in our storage and logistics segment. (4) In July 2022, we acquired the remaining 50% equity interest in Crestwood Permian and as a result, we control and own 100% of the equity interests in Crestwood Permian. Our Crestwood Permian equity investment was previously included in our gathering and processing south segment. See Note 3 for a further discussion of this acquisition. Distributions and Contributions The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions) : Distributions Contributions Nine Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Crestwood Permian Basin $ 6.3 $ 2.2 $ 1.8 $ — Tres Holdings — 4.9 5.1 6.7 PRBIC — — 0.3 — Crestwood Permian — 13.6 — 83.5 Total $ 6.3 $ 20.7 $ 7.2 $ 90.2

Risk Management

Risk Management	9 Months Ended
	Sep. 30, 2023
Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]
Risk Management	Risk Management We are exposed to certain market risks related to our ongoing business operations. These risks include exposure to changing commodity prices. We utilize derivative instruments to manage our exposure to fluctuations in commodity prices, which is discussed below. Additional information related to our derivatives is discussed in Note 7. Risk Management Activities We sell NGLs (such as propane, ethane, butane and heating oil), crude oil and natural gas to energy-related businesses and may use a variety of financial and other instruments including forward contracts involving physical delivery of NGLs, crude oil and natural gas. We periodically enter into offsetting positions to economically hedge against the exposure our customer contracts create. Certain of these contracts and positions are derivative instruments. We do not designate any of our commodity-based derivatives as hedging instruments for accounting purposes. Our commodity-based derivatives are reflected at fair value in our consolidated balance sheets, and changes in the fair value of these derivatives that impact the consolidated statements of operations are reflected in costs of product/services sold. Our commodity-based derivatives that are settled with physical commodities are reflected as an increase to product revenues, and the commodity inventory that is utilized to satisfy those physical obligations is reflected as an increase to product costs in our consolidated statements of operations. Our commodity-based derivatives that are settled financially are also reflected in product costs in our consolidated statements of operations. The following table summarizes the increase (decrease) in our product revenues and product costs, net, in our consolidated statements of operations related to our commodity-based derivatives ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Product revenues $ 49.1 $ 84.7 $ 236.0 $ 395.7 Product costs, net $ 18.0 $ (45.0) $ (13.5) $ 6.3 We attempt to balance our contractual portfolio in terms of notional amounts and timing of performance and delivery obligations. This balance in the contractual portfolio significantly reduces the volatility in product costs related to these instruments. Notional Amounts and Terms The notional amounts of our derivative financial instruments include the following: September 30, 2023 December 31, 2022 Fixed Price Fixed Price Fixed Price Fixed Price Propane, ethane, butane, heating oil and crude oil (MMBbls) 72.9 78.7 67.2 70.2 Natural gas (Bcf) 11.3 12.8 44.2 48.4 Notional amounts reflect the volume of transactions, but do not represent the amounts exchanged by the parties to the financial instruments. Accordingly, notional amounts do not reflect our monetary exposure to market or credit risks. All contracts subject to price risk had a maturity of 36 months or less; however, 88% of the contracted volumes will be delivered or settled within 12 months. Credit Risk Inherent in our contractual portfolio are certain credit risks. Credit risk is the risk of loss from nonperformance by suppliers, customers or financial counterparties to a contract. We take an active role in managing credit risk and have established control procedures, which are reviewed on an ongoing basis. We attempt to minimize credit risk exposure through credit policies and periodic monitoring procedures as well as through customer deposits, letters of credit and entering into netting agreements that allow for offsetting counterparty receivable and payable balances for certain financial transactions, as deemed appropriate. The counterparties associated with our price risk management activities are energy marketers and propane retailers, resellers and dealers. Certain of our derivative instruments have credit limits that require us to post collateral. The amount of collateral required to be posted is a function of the net liability position of the derivative as well as our established credit limit with the respective counterparty. If our credit rating were to change, the counterparties could require us to post additional collateral. The amount of additional collateral that would be required to be posted would vary depending on the extent of change in our credit rating as well as the requirements of the individual counterparty. All collateral amounts have been netted against the asset or liability with the respective counterparty and are reflected in our consolidated balance sheets as assets and liabilities from price risk management activities. For a summary of the fair value of our commodity derivative instruments with credit-risk related contingent features and their associated collateral, see Note 7.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The accounting standard for fair value measurement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy are as follows: • Level 1 — Includes inputs that are observable in active markets for identical assets or liabilities as of the reporting date such as exchange-traded derivatives, listed equities and U.S. government treasury securities. • Level 2 — Includes inputs that are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date. Instruments in this category include non-exchange-traded derivatives such as over the counter (OTC) forwards, options and physical exchanges. • Level 3 — Includes significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. Financial Assets and Liabilities As of September 30, 2023 and December 31, 2022, we held certain assets and liabilities that are required to be measured at fair value on a recurring basis, which include our derivative instruments related to crude oil, NGLs and natural gas. Our derivative instruments consist of forwards, swaps, futures, physical exchanges and options. Our derivative instruments that are traded on the New York Mercantile Exchange have been categorized as Level 1. Our derivative instruments also include OTC contracts, which have been categorized as Level 2. The following tables summarize the fair value hierarchy of our financial instruments that were reflected in our consolidated balance sheets ( in millions ): September 30, 2023 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 14.5 $ 248.6 $ — $ 263.1 $ (213.9) $ (11.2) $ 38.0 Other investments (2) 2.8 — — 2.8 — — 2.8 Total assets at fair value $ 17.3 $ 248.6 $ — $ 265.9 $ (213.9) $ (11.2) $ 40.8 Liabilities Liabilities from price risk management with credit-risk-related contingent features $ 11.5 $ 206.2 $ — $ 217.7 $ (213.9) $ 3.9 $ 7.7 Liabilities from price risk management without credit-risk-related contingent features — 5.5 — 5.5 — 4.4 9.9 Total liabilities at fair value $ 11.5 $ 211.7 $ — $ 223.2 $ (213.9) $ 8.3 $ 17.6 December 31, 2022 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 62.8 $ 474.3 $ — $ 537.1 $ (452.1) $ (12.2) $ 72.8 Other investments (2) 2.6 — — 2.6 — — 2.6 Total assets at fair value $ 65.4 $ 474.3 $ — $ 539.7 $ (452.1) $ (12.2) $ 75.4 Liabilities Liabilities from price risk management with credit-risk-related contingent features $ 65.7 $ 420.1 $ — $ 485.8 $ (452.1) $ (25.6) $ 8.1 Liabilities from price risk management without credit-risk-related contingent features — 11.9 — 11.9 — 3.9 15.8 Total liabilities at fair value $ 65.7 $ 432.0 $ — $ 497.7 $ (452.1) $ (21.7) $ 23.9 (1) Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions. (2) Amount primarily relates to our investment in Suburban Propane Partners, L.P. units, which is reflected in other non-current assets on CEQP’s consolidated balance sheets. Cash, Accounts Receivable and Accounts Payable As of September 30, 2023 and December 31, 2022, the carrying amounts of cash, accounts receivable and accounts payable approximate fair value based on the short-term nature of these instruments. Credit Facilities The fair value of the amounts outstanding under our credit facilities approximates their respective carrying amounts as of September 30, 2023 and December 31, 2022, primarily due to the variable nature of the interest rates of the instruments, which is considered a Level 2 fair value measurement. See Note 8 for a further discussion of our credit facilities. Senior Notes We estimate the fair value of our senior notes primarily based on quoted market prices for the same or similar issuances (representing a Level 2 fair value measurement). The following table represents the carrying amount (reduced for deferred financing costs associated with the respective notes) and fair value of our senior notes ( in millions ): September 30, 2023 December 31, 2022 Carrying Fair Carrying Fair 2025 Senior Notes $ 498.4 $ 491.8 $ 497.6 $ 486.7 2027 Senior Notes $ 596.1 $ 576.7 $ 595.3 $ 556.9 February 2029 Senior Notes $ 693.1 $ 674.4 $ 692.1 $ 642.1 April 2029 Senior Notes (1) $ 473.5 $ 464.2 $ 476.7 $ 450.0 2031 Senior Notes $ 591.6 $ 611.5 $ — $ — (1) The carrying amount includes a fair value adjustment we recorded in conjunction with the merger with Oasis Midstream discussed in Note 3. For a further discussion of this fair value adjustment, see Note 8.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following ( in millions ): September 30, December 31, CMLP Credit Facility $ 460.0 $ 922.3 CPBH Credit Facility — 206.8 2025 Senior Notes 500.0 500.0 2027 Senior Notes 600.0 600.0 February 2029 Senior Notes 700.0 700.0 April 2029 Senior Notes 450.0 450.0 April 2029 Senior Notes fair value adjustment, net (1) 23.5 26.7 2031 Senior Notes 600.0 — Less: deferred financing costs, net 31.0 27.5 Total long-term debt $ 3,302.5 $ 3,378.3 (1) In conjunction with the merger with Oasis Midstream discussed in Note 3, we assumed the April 2029 Senior Notes, and we recorded a fair value adjustment of approximately $30.7 million. We recorded a reduction to our interest and debt expense related to the amortization of the fair value adjustment of approximately $1.1 million and $3.2 million during the three and nine months ended September 30, 2023 and $1.1 million and $2.9 million during the three and nine months ended September 30, 2022. Credit Facilities CMLP Credit Facility. Crestwood Midstream’s five-year $1.75 billion revolving credit facility (the CMLP Credit Facility) is available to fund acquisitions, working capital and internal growth projects and for general partnership purposes. Subject to limited exception, the CMLP Credit Facility is guaranteed and secured by substantially all of the equity interests and assets of Crestwood Midstream’s subsidiaries, except for Crestwood Infrastructure Holdings LLC, Crestwood Niobrara LLC, PRBIC and their respective subsidiaries. In January 2023, Crestwood Permian and certain of its subsidiaries were designated as guarantor subsidiaries of Crestwood Midstream’s credit facility and senior notes. In conjunction with the merger with Oasis Midstream on February 1, 2022, we borrowed amounts under the CMLP Credit Facility to fund the cash paid of $160 million to Oasis Petroleum and to repay approximately $218 million of borrowings on Oasis Midstream’s credit facility, which was retired on February 1, 2022. In addition, in July 2022 we borrowed approximately $631.2 million under the CMLP Credit Facility to fund the Sendero Acquisition. Under the credit agreement, Crestwood Midstream is required to maintain a net debt to consolidated EBITDA ratio (as defined in the credit agreement) of not more than 5.50 to 1.0, a consolidated EBITDA to consolidated interest expense ratio (as defined in the credit agreement) of not less than 2.50 to 1.0, and a senior secured leverage ratio (as defined in the credit agreement) of not more than 3.50 to 1.0. At September 30, 2023, the net debt to consolidated EBITDA ratio was approximately 4.35 to 1.0, the consolidated EBITDA to consolidated interest expense ratio was approximately 3.65 to 1.0, and the senior secured leverage ratio was 0.61 to 1.0. At September 30, 2023, Crestwood Midstream had $872.0 million of available capacity under the CMLP Credit Facility considering the most restrictive debt covenants in the credit agreement. At September 30, 2023 and December 31, 2022, outstanding standby letters of credit under the CMLP Credit Facility were $5.7 million and $8.2 million. Borrowings under the CMLP Credit Facility accrue interest at either prime or the Adjusted Term SOFR (as defined in the credit agreement) plus applicable spreads, which resulted in interest rates between 7.67% and 9.75% at September 30, 2023 and 6.28% and 8.50% at December 31, 2022. The weighted-average interest rate on outstanding borrowings as of September 30, 2023 and December 31, 2022 was 7.68% and 6.40%. CPBH Credit Facility. In conjunction with the acquisition of the remaining 50% equity interest in Crestwood Permian in July 2022, we assumed a credit agreement entered into by CPB Subsidiary Holdings LLC, a wholly-owned subsidiary of Crestwood Permian (the CPBH Credit Facility). In January 2023, we utilized borrowings under the CMLP Credit Facility to repay and terminate the CPBH Credit Facility. 2031 Senior Notes.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings Linde Lawsuit . On December 23, 2019, Linde Engineering North America Inc. (Linde) filed a lawsuit in the District Court of Harris County, Texas alleging that Arrow Field Services, LLC, our consolidated subsidiary, and Crestwood Midstream breached a contract entered into in March 2018 under which Linde was to provide engineering, procurement and construction services to us related to the completion of the construction of the Bear Den II cryogenic processing plant. A jury trial concluded on June 17, 2022, and a final judgement was entered on October 24, 2022. The final judgment includes an award of damages of approximately $20.7 million, a pre-judgement interest award of approximately $17.7 million and attorney fees and other costs of approximately $4.7 million. We have insurance coverage related to certain pre-judgement interest awards but have not recorded a receivable related to any potential insurance recovery at September 30, 2023. On January 9, 2023, we paid approximately $21.2 million to the Court Registry under protest to mitigate the impact of post-judgement interest. We filed a Notice of Appeal on January 13, 2023 and an Opening Appeal Brief on September 29, 2023. We are unable to predict the ultimate outcome of the appeal related to this matter. General . We are periodically involved in litigation proceedings. If we determine that a negative outcome is probable and the amount of loss is reasonably estimable, then we accrue the estimated amount. The results of litigation proceedings cannot be predicted with certainty. We could incur judgments, enter into settlements or revise our expectations regarding the outcome of certain matters, and such developments could have a material adverse effect on our results of operations or cash flows in the period in which the amounts are paid and/or accrued. As of September 30, 2023 and December 31, 2022, we had approximately $8.9 million and $35.0 million accrued for outstanding legal matters. Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures for which we can estimate will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Any loss estimates are inherently subjective, based on currently available information, and are subject to management’s judgment and various assumptions. Due to the inherently subjective nature of these estimates and the uncertainty and unpredictability surrounding the outcome of legal proceedings, actual results may differ materially from any amounts that have been accrued. Regulatory Compliance In the ordinary course of our business, we are subject to various laws and regulations. In the opinion of our management, compliance with current laws and regulations will not have a material effect on our results of operations, cash flows or financial condition. Environmental Compliance Our operations are subject to stringent and complex laws and regulations pertaining to worker health, safety, and the environment. We are subject to laws and regulations at the federal, state, regional and local levels that relate to air and water quality, hazardous and solid waste management and disposal, and other environmental matters. The cost of planning, designing, constructing and operating our facilities must incorporate compliance with environmental laws and regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures. At both September 30, 2023 and December 31, 2022, our accrual for environmental matters was less than $1.0 million and our potential exposure related to environmental matters was less than $1.0 million at September 30, 2023. Self-Insurance We utilize third-party insurance subject to varying retention levels of self-insurance, which management considers prudent. Such self-insurance relates to losses and liabilities primarily associated with medical claims, workers’ compensation claims and general, product, vehicle and environmental liability. Losses are accrued based upon management’s estimates of the aggregate liability for claims incurred using certain assumptions followed in the insurance industry and based on past experience. The primary assumption utilized is actuarially determined loss development factors. The loss development factors are based primarily on historical data. Our self-insurance reserves could be affected if future claim developments differ from the historical trends. We believe changes in health care costs, trends in health care claims of our employee base, accident frequency and severity and other factors could materially affect the estimate for these liabilities. We continually monitor changes in employee demographics, incident and claim type and evaluate our insurance accruals and adjust our accruals based on our evaluation of these qualitative data points. We are liable for the development of claims for our previously disposed of retail propane operations, provided they were reported prior to August 1, 2012. The following table summarizes CEQP’s and CMLP’s self-insurance reserves ( in millions ): CEQP CMLP September 30, December 31, 2022 September 30, December 31, 2022 Self-insurance reserves (1) $ 5.7 $ 5.6 $ 5.0 $ 4.8 (1) At September 30, 2023, CEQP and CMLP classified approximately $3.2 million and $2.7 million, respectively, of these reserves as other long-term liabilities on their consolidated balance sheets. Indemnifications We periodically provide indemnification arrangements related to assets or businesses we have sold. Our potential exposure under indemnification arrangements can range from a specified amount to an unlimited amount, depending on the nature of the claim, specificity as to duration, and the particular transaction. As of September 30, 2023 and December 31, 2022, we have no amounts accrued for these indemnifications.

Leases

Leases	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Leases	Leases The following table summarizes the balance sheet information related to our operating and finance leases (in millions ): September 30, December 31, 2022 Operating Leases Operating lease right-of-use assets, net $ 23.3 $ 24.4 Accrued expenses and other liabilities $ 11.1 $ 10.9 Other long-term liabilities 15.4 17.4 Total operating lease liabilities $ 26.5 $ 28.3 Finance Leases Property, plant and equipment $ 9.8 $ 13.6 Less: accumulated depreciation 4.9 8.9 Property, plant and equipment, net $ 4.9 $ 4.7 Accrued expenses and other liabilities $ 1.7 $ 1.9 Other long-term liabilities 3.0 2.7 Total finance lease liabilities $ 4.7 $ 4.6 Lease expense. Our operating lease expense, net totaled $3.5 million and $3.4 million for the three months ended September 30, 2023 and 2022 and $10.9 million and $9.2 million for the nine months ended September 30, 2023 and 2022. Our finance lease expense totaled $0.6 million and $0.9 million for the three months ended September 30, 2023 and 2022 and $2.1 million and $2.7 million for the nine months ended September 30, 2023 and 2022. Other. During March 2022, we exercised an option to purchase crude oil railcars under certain of our finance leases as a result of our plan to exit our crude oil railcar operations. In April 2022, we sold the crude oil railcars to a third party for approximately $24.7 million and we recognized a loss on the sale of approximately $4.1 million during the nine months ended September 30, 2022.
Lessee, Finance Leases	Leases The following table summarizes the balance sheet information related to our operating and finance leases (in millions ): September 30, December 31, 2022 Operating Leases Operating lease right-of-use assets, net $ 23.3 $ 24.4 Accrued expenses and other liabilities $ 11.1 $ 10.9 Other long-term liabilities 15.4 17.4 Total operating lease liabilities $ 26.5 $ 28.3 Finance Leases Property, plant and equipment $ 9.8 $ 13.6 Less: accumulated depreciation 4.9 8.9 Property, plant and equipment, net $ 4.9 $ 4.7 Accrued expenses and other liabilities $ 1.7 $ 1.9 Other long-term liabilities 3.0 2.7 Total finance lease liabilities $ 4.7 $ 4.6 Lease expense. Our operating lease expense, net totaled $3.5 million and $3.4 million for the three months ended September 30, 2023 and 2022 and $10.9 million and $9.2 million for the nine months ended September 30, 2023 and 2022. Our finance lease expense totaled $0.6 million and $0.9 million for the three months ended September 30, 2023 and 2022 and $2.1 million and $2.7 million for the nine months ended September 30, 2023 and 2022. Other. During March 2022, we exercised an option to purchase crude oil railcars under certain of our finance leases as a result of our plan to exit our crude oil railcar operations. In April 2022, we sold the crude oil railcars to a third party for approximately $24.7 million and we recognized a loss on the sale of approximately $4.1 million during the nine months ended September 30, 2022.

Partners' Capital

Partners' Capital	9 Months Ended
	Sep. 30, 2023
Statement of Partners' Capital [Abstract]
Partners' Capital	Partners’ Capital and Non-Controlling Partner Common Units On February 1, 2022, we completed the merger with Oasis Midstream. Pursuant to the merger agreement, Chord received cash and approximately 20.9 million newly issued CEQP common units in exchange for its common units held in Oasis Midstream. In addition, Oasis Midstream’s public unitholders received approximately 12.9 million newly issued CEQP common units in exchange for the Oasis Midstream common units held by them. For a further discussion of the merger with Oasis Midstream, see Note 3. On July 11, 2022, we acquired First Reserves’s 50% equity interest in Crestwood Permian in exchange for approximately $5.9 million in cash and approximately 11.3 million newly issued CEQP common units. For a further discussion of the CPJV Acquisition, see Note 3. On September 15, 2022, CEQP acquired 4.6 million CEQP common units from OMS Holdings LLC, a subsidiary of Chord, for approximately $123.7 million. This transaction resulted in CEQP retiring the common units acquired from OMS Holdings LLC. Distributions Crestwood Equity Limited Partners. A summary of CEQP’s limited partner quarterly cash distributions for the nine months ended September 30, 2023 and 2022 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2023 February 7, 2023 February 14, 2023 $ 0.655 $ 68.9 May 8, 2023 May 15, 2023 $ 0.655 68.9 August 7, 2023 August 14, 2023 $ 0.655 68.9 $ 206.7 2022 February 7, 2022 February 14, 2022 $ 0.625 $ 60.9 May 6, 2022 May 13, 2022 $ 0.655 64.2 August 5, 2022 August 12, 2022 $ 0.655 71.6 $ 196.7 On October 12, 2023, the board of directors of our general partner declared a cash distribution of $0.655 per limited partner unit with respect to the quarter ended September 30, 2023. In addition, the board of directors declared a special cash distribution of $0.003 per limited partner unit in conjunction with the Energy Transfer Merger. The cash distributions were paid on October 31, 2023 to unitholders of record on October 23, 2023. Preferred Unitholders . During the nine months ended September 30, 2023 and 2022, we paid cash distributions of approximately $45.1 million and $45.0 million to our preferred unitholders. On October 12, 2023, the board of directors of our general partner declared a cash distribution of approximately $15 million with respect to the quarter ended September 30, 2023. In addition, the board of directors declared a special cash distribution of $0.0003 per preferred unit in conjunction with the Energy Transfer Merger. The cash distributions were paid on October 31, 2023 to unitholders of record on October 23, 2023. Crestwood Midstream During the nine months ended September 30, 2023 and 2022, Crestwood Midstream paid cash distributions of $264.8 million and $537.6 million to its partners. On February 1, 2022, Crestwood Midstream received a non-cash contribution of approximately $1,075.1 million from Crestwood Equity related to net assets it acquired in conjunction with the merger with Oasis Midstream. In addition, Crestwood Equity contributed the cash acquired in conjunction with the merger with Oasis Midstream of approximately $14.9 million to Crestwood Midstream. On July 11, 2022, Crestwood Midstream received a non-cash contribution of approximately $127.3 million from Crestwood Equity related to the acquisition of its 50% equity interest in Crestwood Permian. In addition, Crestwood Equity contributed the cash acquired in conjunction with this acquisition of approximately $149.4 million to Crestwood Midstream. For a further discussion of these acquisitions, see Note 3. Non-Controlling Partner Crestwood Niobrara LLC (Crestwood Niobrara) issued preferred interests to CN Jackalope Holdings LLC (Jackalope Holdings), which are reflected as non-controlling interest in subsidiary apart from partners’ capital (i.e., temporary equity) on our consolidated balance sheets. We adjust the carrying amount of our non-controlling interest to its liquidation value each period through net income attributable to non-controlling partner. In July 2023, we entered into a Fourth Amended and Restated Limited Liability Company Agreement with Jackalope Holdings to modify certain provisions related to the conversion and redemption of the Crestwood Niobrara preferred units. In conjunction with the merger agreement we entered into with Energy Transfer in August 2023 which is further discussed in Note 1, the Crestwood Niobrara preferred units became currently redeemable and as a result, we reflected the Crestwood Niobrara preferred units at their Change of Control Redemption Price (as defined in the agreement) which is equal to 105% of the liquidation value. The following tables show the change in our non-controlling interest in subsidiary at September 30, 2023 and 2022 (in millions) : Balance at December 31, 2022 $ 434.4 Distributions to non-controlling partner (31.0) Net income attributable to non-controlling partner (1) 52.6 Balance at September 30, 2023 $ 456.0 Balance at December 31, 2021 $ 434.6 Distributions to non-controlling partner (31.0) Net income attributable to non-controlling partner 30.8 Balance at September 30, 2022 $ 434.4 (1) Includes approximately $21.7 million recorded during the three months ended September 30, 2023 to reflect the Crestwood Niobrara preferred units at their maximum redemption value as discussed above. In October 2023, Crestwood Niobrara paid a cash distribution of approximately $10.3 million to Jackalope Holdings with respect to the quarter ended September 30, 2023. Other In February 2023, Crestwood Equity issued 245,929 performance units (the February 2023 Units) under the Crestwood Equity Partners LP 2018 Long-Term Incentive Plan (Crestwood LTIP). The performance units are designed to provide an incentive for continuous employment to certain key employees. The vesting of performance units is subject to the attainment of certain performance and market goals over a three-year period, and entitle a participant to receive common units of Crestwood Equity without payment of an exercise price upon vesting. As of September 30, 2023, we had total unamortized compensation expense of approximately $4.5 million related to the February 2023 Units. During the three and nine months ended September 30, 2023, we recognized compensation expense of $0.5 million and $1.9 million related to the February 2023 Units, which is included in general and administrative expenses on our consolidated statements of operations. During the nine months ended September 30, 2023, 161,278 performance units that were previously issued in 2020 under the Crestwood LTIP vested, and as a result of the attainment of certain performance and market goals and related distributions during the three years that the awards were outstanding, we issued 217,702 common units during the nine months ended September 30, 2023 related to those performance units.

Earnings Per Limited Partner Un

Earnings Per Limited Partner Unit	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Limited Partner Unit	Earnings Per Limited Partner Unit We calculate the dilutive effect of the preferred units and Crestwood Niobrara preferred units using the if-converted method which assumes units are converted at the beginning of the period (beginning with their respective issuance date), and the resulting common units are included in the denominator of the diluted net income per common unit calculation for the period being presented. Distributions declared in the period and undeclared distributions that accumulated during the period are added back to the numerator for purposes of the if-converted calculation. The dilutive effect of the unit-based compensation performance units is calculated using the treasury stock method which considers the impact to net income or loss attributable to Crestwood Equity Partners and limited partner units from the potential issuance of limited partner units. We exclude potentially dilutive securities from the determination of diluted earnings per unit (as well as their related income statement impacts) when their impact is anti-dilutive. The following table summarizes information regarding the weighted-average of common units excluded during the three and nine months ended September 30, 2023 and 2022 (in millions) : Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Preferred units (1) 7.1 7.1 7.1 7.1 Crestwood Niobrara’s preferred units (1) 3.8 3.9 — 3.9 Unit-based compensation performance units (1) 0.1 0.1 — 0.2 (1) For additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units, and additional information regarding our performance units, see our 2022 Annual Report on Form 10-K, Note 1 and Note 11. The following table shows Crestwood Equity’s common unitholders’ interest in net income (loss) and weighted-average limited partner units used in computing basic and diluted net income (loss) per limited partner unit for the three and nine months ended September 30, 2023 and 2022 (in millions, except for per unit data): Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Common unitholders’ interest in net income (loss) $ (35.1) $ (68.3) $ 107.9 $ (57.2) Diluted net income (loss) $ (35.1) $ (68.3) $ 107.9 $ (57.2) Weighted-average limited partners’ units outstanding - basic 105.2 107.1 105.2 97.1 Dilutive effect of Crestwood Niobrara preferred units — — 3.8 — Dilutive effect of unit-based compensation performance units — — 0.1 — Weighted-average limited partners’ units outstanding - diluted 105.2 107.1 109.1 97.1 Net income (loss) per limited partner unit: Basic $ (0.33) $ (0.64) $ 1.03 $ (0.59) Diluted $ (0.33) $ (0.64) $ 0.99 $ (0.59)

Segments

Segments	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Segments	Segments Our financial statements reflect three operating and reporting segments: (i) gathering and processing north operations; (ii) gathering and processing south operations; and (iii) storage and logistics operations. Our corporate operations include all general and administrative expenses that are not allocated to our reportable segments. Below is a description of our operating and reporting segments. • Gathering and Processing North . Our gathering and processing north operations provide natural gas gathering, compression, treating and processing services, crude oil gathering and storage services and produced water gathering and disposal services to producers in the Williston Basin and Powder River Basin. • Gathering and Processing South . Our gathering and processing south operations provide natural gas gathering, compression, treating and processing services, crude oil gathering services and produced water gathering and disposal services to producers in the Delaware Basin. • Storage and Logistics . Our storage and logistics operations provide NGLs, crude oil and natural gas storage, terminal, marketing and transportation (including rail, truck and pipeline) services to producers, refiners, marketers, utilities and other customers. We assess the performance of our operating segments based on EBITDA, which is identified as income (loss) before debt-related costs (interest and debt expense, net), income taxes and depreciation, amortization and accretion expense. Below is a reconciliation of CEQP’s and CMLP’s net income to EBITDA ( in millions ): CEQP CMLP Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2023 2022 2023 2022 2023 2022 2023 2022 Net income (loss) $ 12.1 $ (43.0) $ 205.6 $ 18.6 $ 21.4 $ (113.0) $ 217.8 $ (107.4) Add: Interest and debt expense, net 56.9 47.6 167.9 123.8 56.9 47.6 167.9 123.8 Provision for income taxes 0.2 1.4 1.1 1.7 0.2 1.4 1.0 1.6 Depreciation, amortization and accretion 80.2 86.9 242.7 242.3 80.1 86.8 242.5 248.0 EBITDA $ 149.4 $ 92.9 $ 617.3 $ 386.4 $ 158.6 $ 22.8 $ 629.2 $ 266.0 The following tables summarize CEQP’s and CMLP’s reportable segment data for the three and nine months ended September 30, 2023 and 2022 ( in millions ). Intersegment revenues included in the following tables are accounted for as arms-length transactions that apply our revenue recognition policy described in our 2022 Annual Report on Form 10-K. Included in earnings from unconsolidated affiliates, net reflected in the tables below was approximately $1.3 million and $2.5 million of our proportionate share of net interest income, income taxes, depreciation and amortization expense and gains on long-lived assets, net recorded by our equity investments for the three months ended September 30, 2023 and 2022 and $5.4 million and $12.0 million for the nine months ended September 30, 2023 and 2022. Segment EBITDA Information Three Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 262.8 $ 123.0 $ 753.6 $ — $ 1,139.4 Intersegment revenues, net 70.9 52.5 (123.4) — — Costs of product/services sold 158.4 121.1 622.1 — 901.6 Operations and maintenance expense 29.9 14.9 12.1 — 56.9 General and administrative expense — — — 20.8 20.8 Loss on long-lived assets, net — — (2.6) — (2.6) Earnings from unconsolidated affiliates, net — 1.1 — — 1.1 Crestwood Midstream EBITDA $ 145.4 $ 40.6 $ (6.6) $ (20.8) $ 158.6 Crestwood Equity General and administrative expense — — — 9.4 9.4 Other income, net — — — 0.2 0.2 Crestwood Equity EBITDA $ 145.4 $ 40.6 $ (6.6) $ (30.0) $ 149.4 Three Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 272.6 $ 177.4 $ 1,116.0 $ — $ 1,566.0 Intersegment revenues, net 142.2 137.8 (280.0) — — Costs of product/services sold 230.2 249.6 807.0 — 1,286.8 Operations and maintenance expense 27.4 14.3 13.3 — 55.0 General and administrative expense — — — 32.3 32.3 Loss on long-lived assets, net — (247.6) — — (247.6) Gain on acquisition — 75.3 — — 75.3 Earnings from unconsolidated affiliates, net — 2.0 1.2 — 3.2 Crestwood Midstream EBITDA $ 157.2 $ (119.0) $ 16.9 $ (32.3) $ 22.8 Crestwood Equity General and administrative expense — — — 1.6 1.6 Gain on long-lived assets (1) — 71.7 — — 71.7 Crestwood Equity EBITDA $ 157.2 $ (47.3) $ 16.9 $ (33.9) $ 92.9 (1) Represents the gain on the sale of our Barnett operations recorded by CEQP. For a further discussion of this transaction, see Note 3. Nine Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 717.1 $ 373.3 $ 2,333.3 $ — $ 3,423.7 Intersegment revenues, net 231.0 119.2 (350.2) — — Costs of product/services sold 447.7 329.8 1,906.1 — 2,683.6 Operations and maintenance expense 85.6 45.2 35.9 — 166.7 General and administrative expense — — — 74.6 74.6 Gain (loss) on long-lived assets, net 0.1 (2.7) (2.6) 0.4 (4.8) Earnings from unconsolidated affiliates, net (1) — 2.0 133.2 — 135.2 Crestwood Midstream EBITDA $ 414.9 $ 116.8 $ 171.7 $ (74.2) $ 629.2 Crestwood Equity General and administrative expense — — — 12.2 12.2 Other income, net — — — 0.3 0.3 Crestwood Equity EBITDA $ 414.9 $ 116.8 $ 171.7 $ (86.1) $ 617.3 (1) In April 2023, we sold our equity interest in Tres Holdings which is reflected in our storage and logistics segment. During the nine months ended September 30, 2023, we recorded a gain on the sale of approximately $132 million, which is reflected as an increase in our earnings from unconsolidated affiliates. Nine Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 787.2 $ 243.4 $ 3,567.2 $ — $ 4,597.8 Intersegment revenues, net 421.2 137.8 (559.0) — — Costs of product/services sold 686.6 249.6 2,928.2 — 3,864.4 Operations and maintenance expense 78.6 28.6 36.8 — 144.0 General and administrative expense — — — 99.0 99.0 Loss on long-lived assets, net — (307.8) (4.1) — (311.9) Gain on acquisition — 75.3 — — 75.3 Earnings from unconsolidated affiliates, net — 9.4 2.8 — 12.2 Crestwood Midstream EBITDA $ 443.2 $ (120.1) $ 41.9 $ (99.0) $ 266.0 Crestwood Equity General and administrative expense — — — 4.8 4.8 Gain on long-lived assets (1) — 125.0 — — 125.0 Other income, net — — — 0.2 0.2 Crestwood Equity EBITDA $ 443.2 $ 4.9 $ 41.9 $ (103.6) $ 386.4 (1) Represents the elimination of the loss on long-lived assets of approximately $53 million recorded by CMLP related to the sale of our legacy assets in the Barnett Shale and a gain on long-lived assets of approximately $72 million recorded by CEQP related to the sale. For a further discussion of this transaction, see Note 3. Other Segment Information CEQP CMLP September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Total Assets Gathering and Processing North $ 3,921.3 $ 4,003.6 $ 3,921.3 $ 4,003.6 Gathering and Processing South 1,452.4 1,473.0 1,452.4 1,473.0 Storage and Logistics 946.1 1,057.6 946.1 1,057.6 Corporate 40.0 32.8 34.4 27.2 Total assets $ 6,359.8 $ 6,567.0 $ 6,354.2 $ 6,561.4

Revenues

Revenues	9 Months Ended
	Sep. 30, 2023
Revenue Recognition [Abstract]
Revenues	Revenues Contract Assets and Contract Liabilities Our contract assets and contract liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. Our receivables related to our revenue contracts accounted for under Accounting Standards Update 2014-09 , Revenue from Contracts with Customers (Topic 606) totaled $336.5 million and $368.2 million at September 30, 2023 and December 31, 2022, and are included in accounts receivable on our consolidated balance sheets. Our contract assets are included in other non-current assets on our consolidated balance sheets. Our contract liabilities primarily consist of current and non-current deferred revenues. On our consolidated balance sheets, our current deferred revenues are included in accrued expenses and other liabilities and our non-current deferred revenues are included in other long-term liabilities. The majority of revenues associated with our deferred revenues is expected to be recognized as the performance obligations under the related contracts are satisfied over the next 14 years. The following table summarizes our contract assets and contract liabilities (in millions) : September 30, 2023 December 31, 2022 Contract assets (non-current) $ 6.8 $ 5.4 Contract liabilities (current) (1) $ 20.3 $ 11.7 Contract liabilities (non-current) (1) $ 207.4 $ 212.3 (1) During the three and nine months ended September 30, 2023, we recognized revenues of approximately $4.5 million and $14.9 million that were previously included in contract liabilities at December 31, 2022. The remaining change in our contract liabilities during the three and nine months ended September 30, 2023 is related to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates. The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of September 30, 2023 (in millions) : Remainder of 2023 $ 16.5 2024 46.4 2025 6.5 2026 4.9 2027 2.1 Thereafter 1.1 Total $ 77.5 Our remaining performance obligations presented in the table above exclude estimates of variable rate escalation clauses in our contracts with customers, and is generally limited to fixed-fee and percentage-of-proceeds service contracts which have fixed pricing and minimum volume terms and conditions. Our remaining performance obligations generally exclude, based on the following practical expedients that we elected to apply, disclosures for (i) variable consideration allocated to a wholly-unsatisfied promise to transfer a distinct service that forms part of the identified single performance obligation; (ii) unsatisfied performance obligations where the contract term is one year or less; and (iii) contracts for which we recognize revenues as amounts are invoiced. Disaggregation of Revenues The following tables summarize our revenues from contracts with customers disaggregated by type of product/service sold and by commodity type for each of our segments for the three and nine months ended September 30, 2023 and 2022 ( in millions ). We believe this summary best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors. Our non- Topic 606 revenues presented in the tables below primarily represents revenues related to our commodity-based derivatives. Three Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 32.2 $ 4.8 $ — $ — $ 37.0 Crude oil 16.9 1.9 — — 18.8 Water 51.0 8.4 — — 59.4 Processing Natural gas 20.0 6.9 — — 26.9 Storage Crude oil 0.6 — — — 0.6 NGLs — — 2.1 — 2.1 Pipeline Crude oil 1.4 0.1 0.6 — 2.1 NGLs — 6.8 0.2 (6.8) 0.2 Transportation NGLs — — 2.2 — 2.2 Rail Loading Crude oil — — 0.2 — 0.2 Product Sales Natural gas 27.4 47.5 78.2 (70.1) 83.0 Crude oil 139.4 0.8 352.2 (15.0) 477.4 NGLs 42.8 98.8 268.4 (31.3) 378.7 Water 1.0 — — — 1.0 Other 0.5 — 0.1 (0.2) 0.4 Total Topic 606 revenues 333.2 176.0 704.2 (123.4) 1,090.0 Non-Topic 606 revenues 0.5 (0.5) 49.4 — 49.4 Total revenues $ 333.7 $ 175.5 $ 753.6 $ (123.4) $ 1,139.4 Three Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 33.4 $ 10.1 $ — $ — $ 43.5 Crude oil 14.7 1.7 — — 16.4 Water 41.8 7.5 — — 49.3 Processing Natural gas 20.7 4.8 — — 25.5 Compression Natural gas — 4.7 — — 4.7 Storage Crude oil 0.6 — 0.1 — 0.7 NGLs — — 2.2 — 2.2 Pipeline Crude oil 1.5 0.1 0.6 — 2.2 NGLs — 5.2 0.1 (5.2) 0.1 Transportation NGLs — — 5.0 — 5.0 Product Sales Natural gas 109.6 144.4 248.4 (205.6) 296.8 Crude oil 120.9 — 362.8 (9.8) 473.9 NGLs 68.3 136.2 411.7 (58.9) 557.3 Water 2.1 — — — 2.1 Other 0.8 — 0.2 (0.5) 0.5 Total Topic 606 revenues 414.4 314.7 1,031.1 (280.0) 1,480.2 Non-Topic 606 revenues 0.4 0.5 84.9 — 85.8 Total revenues $ 414.8 $ 315.2 $ 1,116.0 $ (280.0) $ 1,566.0 Nine Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 95.5 $ 13.6 $ — $ — $ 109.1 Crude oil 46.3 6.0 — — 52.3 Water 139.9 25.2 — — 165.1 Processing Natural gas 56.6 19.6 — — 76.2 Storage Crude oil 1.7 — 0.1 (0.2) 1.6 NGLs — — 6.4 — 6.4 Pipeline Crude oil 3.7 0.4 1.5 — 5.6 NGLs — 17.7 0.3 (17.7) 0.3 Transportation NGLs — — 12.4 — 12.4 Rail Loading Crude oil — — 0.6 — 0.6 Product Sales Natural gas 95.1 113.6 211.9 (182.9) 237.7 Crude oil 377.2 1.1 954.4 (57.7) 1,275.0 NGLs 126.5 296.9 907.8 (91.3) 1,239.9 Water 2.9 — — — 2.9 Other 1.1 — 1.0 (0.4) 1.7 Total Topic 606 revenues 946.5 494.1 2,096.4 (350.2) 3,186.8 Non-Topic 606 revenues 1.6 (1.6) 236.9 — 236.9 Total revenues $ 948.1 $ 492.5 $ 2,333.3 $ (350.2) $ 3,423.7 Nine Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 92.2 $ 57.0 $ — $ — $ 149.2 Crude oil 43.6 4.6 — — 48.2 Water 117.7 13.0 — — 130.7 Processing Natural gas 54.8 7.1 — — 61.9 Compression Natural gas — 11.3 — — 11.3 Storage Crude oil 1.7 — 0.4 (0.2) 1.9 NGLs — — 6.9 — 6.9 Pipeline Crude oil 4.2 0.5 1.5 (0.1) 6.1 NGLs — 5.2 0.2 (5.2) 0.2 Transportation NGLs — — 16.3 — 16.3 Rail Loading Crude oil — — 0.4 — 0.4 Product Sales Natural gas 269.1 145.3 508.0 (331.2) 591.2 Crude oil 394.9 — 1,130.3 (33.9) 1,491.3 NGLs 222.7 136.2 1,505.6 (187.9) 1,676.6 Water 5.0 — — — 5.0 Other 1.4 — 0.5 (0.5) 1.4 Total Topic 606 revenues 1,207.3 380.2 3,170.1 (559.0) 4,198.6 Non-Topic 606 revenues 1.1 1.0 397.1 — 399.2 Total revenues $ 1,208.4 $ 381.2 $ 3,567.2 $ (559.0) $ 4,597.8

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsWe enter into transactions with our affiliates within the ordinary course of business, including product purchases, marketing services and various operating agreements, including operating leases. We also enter into transactions with our affiliates related to services provided on our expansion projects. For a further description of our related party agreements, see our 2022 Annual Report on Form 10-K. During the nine months ended September 30, 2023, we paid approximately $1.0 million of capital expenditures to Applied Consultants, Inc., an affiliate of First Reserve. The following table shows transactions with our affiliates which are reflected in our consolidated statements of operations ( in millions ). Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Revenues at CEQP and CMLP (1) $ — $ 140.8 $ — $ 372.7 Costs of product/services sold at CEQP and CMLP (2) $ — $ 51.3 $ 0.5 $ 232.9 Operations and maintenance expenses at CEQP and CMLP (3) $ 1.0 $ 2.6 $ 4.6 $ 12.4 General and administrative expenses charged by CEQP to CMLP, net (4) $ 5.4 $ 8.5 $ 22.4 $ 23.5 General and administrative expenses at CEQP and CMLP (5) $ — $ — $ — $ 1.3 (1) Includes (i) $83.0 million and $218.9 million during the three and nine months ended September 30, 2022 primarily related to the sale of crude oil and NGLs to a subsidiary of Chord; (ii) $57.4 million and $148.6 million during the three and nine months ended September 30, 2022 primarily related to gathering and processing services provided to a subsidiary of Chord; (iii) $0.3 million and $3.9 million during the three and nine months ended September 30, 2022 related to the sale of NGLs to a subsidiary of Crestwood Permian; and (iv) $0.1 million and $1.3 million during the three and nine months ended September 30, 2022 related to compressor leases with a subsidiary of Crestwood Permian. (2) Includes (i) $0.3 million during the nine months ended September 30, 2023 and $0.3 million and $1.7 million during the three and nine months ended September 30, 2022 primarily related to purchases of natural gas from a subsidiary of Tres Holdings; (ii) $0.2 million during the nine months ended September 30, 2023 and $0.3 million during both the three and nine months ended September 30, 2022 related to gathering services under agreements with Crestwood Permian Basin; (iii) $41.5 million and $114.1 million during the three and nine months ended September 30, 2022 primarily related to purchases of NGLs from a subsidiary of Chord; and (iv) $9.2 million and $116.8 million during the three and nine months ended September 30, 2022 related to purchases of natural gas and NGLs from a subsidiary of Crestwood Permian. (3) We have operating agreements with certain of our unconsolidated affiliates pursuant to which we charge them operations and maintenance expenses in accordance with their respective agreements, and these charges are reflected as a reduction of operations and maintenance expenses in our consolidated statements of operations. During the nine months ended September 30, 2023, we charged $1.5 million to Tres Holdings and during the three and nine months ended September 30, 2023, we charged $1.0 million and $3.1 million to Crestwood Permian Basin. During the three and nine months ended September 30, 2022, we charged $1.2 million and $3.5 million to Tres Holdings, $1.0 million to Crestwood Permian Basin in both periods and $0.4 million and $7.9 million to Crestwood Permian. (4) Includes $6.5 million and $25.7 million of unit-based compensation allocated from CEQP to CMLP during the three and nine months ended September 30, 2023 and $9.6 million and $26.8 million during the three and nine months ended September 30, 2022. In addition, includes $1.1 million and $3.3 million of CMLP’s general and administrative costs allocated to CEQP during the three and nine months ended September 30, 2023 and $1.1 million and $3.3 million during the three and nine months ended September 30, 2022. (5) Represents general and administrative expenses related to a transition services agreement with Chord. The following table shows accounts receivable and accounts payable from our affiliates ( in millions ): September 30, December 31, Accounts receivable at CEQP and CMLP $ 0.4 $ 1.6 Accounts payable at CEQP and CMLP $ 0.1 $ 3.0

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income (loss) attributable to parent	$ (20)	$ (53.3)	$ 153	$ (12.2)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies There were no material changes in our significant accounting policies from those described in our 2022 Annual Report on Form 10-K.

Certain Balance Sheet Informa_2

Certain Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2023
Balance Sheet Related Disclosures [Abstract]
Schedule of Accrued Liabilities	Accrued expenses and other liabilities consisted of the following ( in millions ): September 30, December 31, 2023 2022 CMLP Accrued expenses $ 56.9 $ 66.5 Accrued property taxes 10.5 8.4 Income tax payable 0.7 0.9 Interest payable 64.4 43.2 Accrued additions to property, plant and equipment 16.3 35.6 Operating leases 11.1 10.9 Finance leases 1.7 1.9 Contract liabilities 20.3 11.7 Asset retirement obligations 0.8 0.4 Total CMLP accrued expenses and other liabilities $ 182.7 $ 179.5 CEQP Accrued expenses 0.9 1.2 Income tax payable — 0.1 Total CEQP accrued expenses and other liabilities $ 183.6 $ 180.8
Schedule of Other Long-Term Liabilities	Other long-term liabilities consisted of the following ( in millions ): September 30, December 31, 2023 2022 CMLP Contract liabilities $ 207.4 $ 212.3 Intangible liabilities, net 45.5 50.0 Asset retirement obligations 38.5 36.4 Operating leases 15.4 17.4 Other 14.5 14.2 Total CMLP other long-term liabilities $ 321.3 $ 330.3 CEQP Other 2.1 3.1 Total CEQP other long-term liabilities $ 323.4 $ 333.4

Investments in Unconsolidated_2

Investments in Unconsolidated Affiliates (Tables)	9 Months Ended
	Sep. 30, 2023
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Net Investments and Earnings (Loss) of Unconsolidated Affiliates Our net investments in and earnings (loss) from our unconsolidated affiliates are as follows ( in millions ): Investment Earnings (Loss) from Earnings (Loss) from Three Months Ended Nine Months Ended September 30, December 31, September 30, September 30, 2023 2022 2023 2022 2023 2022 Crestwood Permian Basin LLC (1) $ 74.0 $ 76.5 $ 1.1 $ 0.7 $ 2.0 $ 0.7 Tres Palacios Holdings LLC (2) — 39.8 0.1 1.3 133.6 3.2 Powder River Basin Industrial Complex, LLC (3) 3.1 3.2 (0.1) (0.1) (0.4) (0.4) Crestwood Permian Basin Holdings LLC (4) — — — 1.3 — 8.7 Total $ 77.1 $ 119.5 $ 1.1 $ 3.2 $ 135.2 $ 12.2 (1) As discussed in Note 3, in July 2022, we acquired the remaining 50% equity interest in Crestwood Permian, whose operations included its 50% equity interest in Crestwood Permian Basin LLC (Crestwood Permian Basin). As of September 30, 2023, our equity in the underlying net assets of Crestwood Permian Basin was less than the carrying value of our investment balance by approximately $2.2 million. During the three and nine months ended September 30, 2023, we recorded amortization of less than $0.1 million and approximately $0.1 million, respectively, related to this basis difference, which is reflected as a decrease in our earnings from unconsolidated affiliates in our consolidated statements of operations, and during both the three and nine months ended September 30, 2022, we recorded amortization of less than $0.1 million related to this basis difference. Our Crestwood Permian Basin investment is included in our gathering and processing south segment. (2) In April 2023, we sold our equity interest in Tres Holdings and we recorded a gain on the sale of approximately $132 million, which eliminated our $19.9 million historical basis difference between our investment balance and our equity in the underlying net assets of Tres Holdings. During the nine months ended September 30, 2023, we recorded amortization of approximately $0.3 million related to this excess basis, which is reflected as an increase in our earnings from unconsolidated affiliates in our consolidated statements of operations, and during the three and nine months ended September 30, 2022, we recorded amortization of approximately $0.3 million and $0.9 million related to this excess basis. Our Tres Holdings investment was included in our storage and logistics segment. See Tres Holdings Divestiture above for a further discussion of the sale of our Tres Holdings equity investment. (3) As of September 30, 2023, our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) approximates the carrying value of our investment balance. Our PRBIC investment is included in our storage and logistics segment. (4) In July 2022, we acquired the remaining 50% equity interest in Crestwood Permian and as a result, we control and own 100% of the equity interests in Crestwood Permian. Our Crestwood Permian equity investment was previously included in our gathering and processing south segment. See Note 3 for a further discussion of this acquisition. The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions) : Distributions Contributions Nine Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Crestwood Permian Basin $ 6.3 $ 2.2 $ 1.8 $ — Tres Holdings — 4.9 5.1 6.7 PRBIC — — 0.3 — Crestwood Permian — 13.6 — 83.5 Total $ 6.3 $ 20.7 $ 7.2 $ 90.2

Risk Management (Tables)

Risk Management (Tables)	9 Months Ended
	Sep. 30, 2023
Risk Management - Notional Amounts and Terms of Companys Derivative Financial Instruments [Abstract]
Summary of Commodity-Based Derivatives	The following table summarizes the increase (decrease) in our product revenues and product costs, net, in our consolidated statements of operations related to our commodity-based derivatives ( in millions ): Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Product revenues $ 49.1 $ 84.7 $ 236.0 $ 395.7 Product costs, net $ 18.0 $ (45.0) $ (13.5) $ 6.3
Notional Amounts And Terms Of Company's Derivative Financial Instruments	The notional amounts of our derivative financial instruments include the following: September 30, 2023 December 31, 2022 Fixed Price Fixed Price Fixed Price Fixed Price Propane, ethane, butane, heating oil and crude oil (MMBbls) 72.9 78.7 67.2 70.2 Natural gas (Bcf) 11.3 12.8 44.2 48.4

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Assets And Liabilities Measured At Fair Value On Recurring Basis	The following tables summarize the fair value hierarchy of our financial instruments that were reflected in our consolidated balance sheets ( in millions ): September 30, 2023 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 14.5 $ 248.6 $ — $ 263.1 $ (213.9) $ (11.2) $ 38.0 Other investments (2) 2.8 — — 2.8 — — 2.8 Total assets at fair value $ 17.3 $ 248.6 $ — $ 265.9 $ (213.9) $ (11.2) $ 40.8 Liabilities Liabilities from price risk management with credit-risk-related contingent features $ 11.5 $ 206.2 $ — $ 217.7 $ (213.9) $ 3.9 $ 7.7 Liabilities from price risk management without credit-risk-related contingent features — 5.5 — 5.5 — 4.4 9.9 Total liabilities at fair value $ 11.5 $ 211.7 $ — $ 223.2 $ (213.9) $ 8.3 $ 17.6 December 31, 2022 Level 1 Level 2 Level 3 Gross Fair Value Contract Netting (1) Collateral/Margin Received or Paid Fair Value Assets Assets from price risk management $ 62.8 $ 474.3 $ — $ 537.1 $ (452.1) $ (12.2) $ 72.8 Other investments (2) 2.6 — — 2.6 — — 2.6 Total assets at fair value $ 65.4 $ 474.3 $ — $ 539.7 $ (452.1) $ (12.2) $ 75.4 Liabilities Liabilities from price risk management with credit-risk-related contingent features $ 65.7 $ 420.1 $ — $ 485.8 $ (452.1) $ (25.6) $ 8.1 Liabilities from price risk management without credit-risk-related contingent features — 11.9 — 11.9 — 3.9 15.8 Total liabilities at fair value $ 65.7 $ 432.0 $ — $ 497.7 $ (452.1) $ (21.7) $ 23.9 (1) Amounts represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions. (2) Amount primarily relates to our investment in Suburban Propane Partners, L.P. units, which is reflected in other non-current assets on CEQP’s consolidated balance sheets.
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The following table represents the carrying amount (reduced for deferred financing costs associated with the respective notes) and fair value of our senior notes ( in millions ): September 30, 2023 December 31, 2022 Carrying Fair Carrying Fair 2025 Senior Notes $ 498.4 $ 491.8 $ 497.6 $ 486.7 2027 Senior Notes $ 596.1 $ 576.7 $ 595.3 $ 556.9 February 2029 Senior Notes $ 693.1 $ 674.4 $ 692.1 $ 642.1 April 2029 Senior Notes (1) $ 473.5 $ 464.2 $ 476.7 $ 450.0 2031 Senior Notes $ 591.6 $ 611.5 $ — $ — (1) The carrying amount includes a fair value adjustment we recorded in conjunction with the merger with Oasis Midstream discussed in Note 3. For a further discussion of this fair value adjustment, see Note 8.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Components Of Long-Term Debt	Long-term debt consisted of the following ( in millions ): September 30, December 31, CMLP Credit Facility $ 460.0 $ 922.3 CPBH Credit Facility — 206.8 2025 Senior Notes 500.0 500.0 2027 Senior Notes 600.0 600.0 February 2029 Senior Notes 700.0 700.0 April 2029 Senior Notes 450.0 450.0 April 2029 Senior Notes fair value adjustment, net (1) 23.5 26.7 2031 Senior Notes 600.0 — Less: deferred financing costs, net 31.0 27.5 Total long-term debt $ 3,302.5 $ 3,378.3 (1) In conjunction with the merger with Oasis Midstream discussed in Note 3, we assumed the April 2029 Senior Notes, and we recorded a fair value adjustment of approximately $30.7 million. We recorded a reduction to our interest and debt expense related to the amortization of the fair value adjustment of approximately $1.1 million and $3.2 million during the three and nine months ended September 30, 2023 and $1.1 million and $2.9 million during the three and nine months ended September 30, 2022.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Self-Insurance Reserves	The following table summarizes CEQP’s and CMLP’s self-insurance reserves ( in millions ): CEQP CMLP September 30, December 31, 2022 September 30, December 31, 2022 Self-insurance reserves (1) $ 5.7 $ 5.6 $ 5.0 $ 4.8 (1) At September 30, 2023, CEQP and CMLP classified approximately $3.2 million and $2.7 million, respectively, of these reserves as other long-term liabilities on their consolidated balance sheets.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Summary of Balance Sheet Information Related to Operating and Finance Leases	The following table summarizes the balance sheet information related to our operating and finance leases (in millions ): September 30, December 31, 2022 Operating Leases Operating lease right-of-use assets, net $ 23.3 $ 24.4 Accrued expenses and other liabilities $ 11.1 $ 10.9 Other long-term liabilities 15.4 17.4 Total operating lease liabilities $ 26.5 $ 28.3 Finance Leases Property, plant and equipment $ 9.8 $ 13.6 Less: accumulated depreciation 4.9 8.9 Property, plant and equipment, net $ 4.9 $ 4.7 Accrued expenses and other liabilities $ 1.7 $ 1.9 Other long-term liabilities 3.0 2.7 Total finance lease liabilities $ 4.7 $ 4.6

Partners' Capital (Tables)

Partners' Capital (Tables)	9 Months Ended
	Sep. 30, 2023
Statement of Partners' Capital [Abstract]
Schedule of Distributions Made to Members or Limited Partners, by Distribution	A summary of CEQP’s limited partner quarterly cash distributions for the nine months ended September 30, 2023 and 2022 is presented below: Record Date Payment Date Per Unit Rate Cash Distributions ( in millions ) 2023 February 7, 2023 February 14, 2023 $ 0.655 $ 68.9 May 8, 2023 May 15, 2023 $ 0.655 68.9 August 7, 2023 August 14, 2023 $ 0.655 68.9 $ 206.7 2022 February 7, 2022 February 14, 2022 $ 0.625 $ 60.9 May 6, 2022 May 13, 2022 $ 0.655 64.2 August 5, 2022 August 12, 2022 $ 0.655 71.6 $ 196.7
Summary of Change in Non-Controlling Interest in Subsidiary	The following tables show the change in our non-controlling interest in subsidiary at September 30, 2023 and 2022 (in millions) : Balance at December 31, 2022 $ 434.4 Distributions to non-controlling partner (31.0) Net income attributable to non-controlling partner (1) 52.6 Balance at September 30, 2023 $ 456.0 Balance at December 31, 2021 $ 434.6 Distributions to non-controlling partner (31.0) Net income attributable to non-controlling partner 30.8 Balance at September 30, 2022 $ 434.4 (1) Includes approximately $21.7 million recorded during the three months ended September 30, 2023 to reflect the Crestwood Niobrara preferred units at their maximum redemption value as discussed above.

Earnings Per Limited Partner _2

Earnings Per Limited Partner Unit (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Summary of Weighted-Average Units Excluded and Basic and Diluted Limited Partner Units	The following table summarizes information regarding the weighted-average of common units excluded during the three and nine months ended September 30, 2023 and 2022 (in millions) : Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Preferred units (1) 7.1 7.1 7.1 7.1 Crestwood Niobrara’s preferred units (1) 3.8 3.9 — 3.9 Unit-based compensation performance units (1) 0.1 0.1 — 0.2 (1) For additional information regarding the potential conversion/redemption of our preferred units and Crestwood Niobrara’s preferred units to CEQP common units, and additional information regarding our performance units, see our 2022 Annual Report on Form 10-K, Note 1 and Note 11.
Schedule of Weighted Average Number of Shares	The following table shows Crestwood Equity’s common unitholders’ interest in net income (loss) and weighted-average limited partner units used in computing basic and diluted net income (loss) per limited partner unit for the three and nine months ended September 30, 2023 and 2022 (in millions, except for per unit data): Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Common unitholders’ interest in net income (loss) $ (35.1) $ (68.3) $ 107.9 $ (57.2) Diluted net income (loss) $ (35.1) $ (68.3) $ 107.9 $ (57.2) Weighted-average limited partners’ units outstanding - basic 105.2 107.1 105.2 97.1 Dilutive effect of Crestwood Niobrara preferred units — — 3.8 — Dilutive effect of unit-based compensation performance units — — 0.1 — Weighted-average limited partners’ units outstanding - diluted 105.2 107.1 109.1 97.1 Net income (loss) per limited partner unit: Basic $ (0.33) $ (0.64) $ 1.03 $ (0.59) Diluted $ (0.33) $ (0.64) $ 0.99 $ (0.59)

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2023
Segment Reporting, Other Significant Reconciling Item [Line Items]
Reconciliation of Net Income (Loss) to Earnings Before Interest, Taxes, Depreciation and Amortization	Below is a reconciliation of CEQP’s and CMLP’s net income to EBITDA ( in millions ): CEQP CMLP Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2023 2022 2023 2022 2023 2022 2023 2022 Net income (loss) $ 12.1 $ (43.0) $ 205.6 $ 18.6 $ 21.4 $ (113.0) $ 217.8 $ (107.4) Add: Interest and debt expense, net 56.9 47.6 167.9 123.8 56.9 47.6 167.9 123.8 Provision for income taxes 0.2 1.4 1.1 1.7 0.2 1.4 1.0 1.6 Depreciation, amortization and accretion 80.2 86.9 242.7 242.3 80.1 86.8 242.5 248.0 EBITDA $ 149.4 $ 92.9 $ 617.3 $ 386.4 $ 158.6 $ 22.8 $ 629.2 $ 266.0
Summary Of Segment Information	The following tables summarize CEQP’s and CMLP’s reportable segment data for the three and nine months ended September 30, 2023 and 2022 ( in millions ). Intersegment revenues included in the following tables are accounted for as arms-length transactions that apply our revenue recognition policy described in our 2022 Annual Report on Form 10-K. Included in earnings from unconsolidated affiliates, net reflected in the tables below was approximately $1.3 million and $2.5 million of our proportionate share of net interest income, income taxes, depreciation and amortization expense and gains on long-lived assets, net recorded by our equity investments for the three months ended September 30, 2023 and 2022 and $5.4 million and $12.0 million for the nine months ended September 30, 2023 and 2022. Segment EBITDA Information Three Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 262.8 $ 123.0 $ 753.6 $ — $ 1,139.4 Intersegment revenues, net 70.9 52.5 (123.4) — — Costs of product/services sold 158.4 121.1 622.1 — 901.6 Operations and maintenance expense 29.9 14.9 12.1 — 56.9 General and administrative expense — — — 20.8 20.8 Loss on long-lived assets, net — — (2.6) — (2.6) Earnings from unconsolidated affiliates, net — 1.1 — — 1.1 Crestwood Midstream EBITDA $ 145.4 $ 40.6 $ (6.6) $ (20.8) $ 158.6 Crestwood Equity General and administrative expense — — — 9.4 9.4 Other income, net — — — 0.2 0.2 Crestwood Equity EBITDA $ 145.4 $ 40.6 $ (6.6) $ (30.0) $ 149.4 Three Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 272.6 $ 177.4 $ 1,116.0 $ — $ 1,566.0 Intersegment revenues, net 142.2 137.8 (280.0) — — Costs of product/services sold 230.2 249.6 807.0 — 1,286.8 Operations and maintenance expense 27.4 14.3 13.3 — 55.0 General and administrative expense — — — 32.3 32.3 Loss on long-lived assets, net — (247.6) — — (247.6) Gain on acquisition — 75.3 — — 75.3 Earnings from unconsolidated affiliates, net — 2.0 1.2 — 3.2 Crestwood Midstream EBITDA $ 157.2 $ (119.0) $ 16.9 $ (32.3) $ 22.8 Crestwood Equity General and administrative expense — — — 1.6 1.6 Gain on long-lived assets (1) — 71.7 — — 71.7 Crestwood Equity EBITDA $ 157.2 $ (47.3) $ 16.9 $ (33.9) $ 92.9 (1) Represents the gain on the sale of our Barnett operations recorded by CEQP. For a further discussion of this transaction, see Note 3. Nine Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 717.1 $ 373.3 $ 2,333.3 $ — $ 3,423.7 Intersegment revenues, net 231.0 119.2 (350.2) — — Costs of product/services sold 447.7 329.8 1,906.1 — 2,683.6 Operations and maintenance expense 85.6 45.2 35.9 — 166.7 General and administrative expense — — — 74.6 74.6 Gain (loss) on long-lived assets, net 0.1 (2.7) (2.6) 0.4 (4.8) Earnings from unconsolidated affiliates, net (1) — 2.0 133.2 — 135.2 Crestwood Midstream EBITDA $ 414.9 $ 116.8 $ 171.7 $ (74.2) $ 629.2 Crestwood Equity General and administrative expense — — — 12.2 12.2 Other income, net — — — 0.3 0.3 Crestwood Equity EBITDA $ 414.9 $ 116.8 $ 171.7 $ (86.1) $ 617.3 (1) In April 2023, we sold our equity interest in Tres Holdings which is reflected in our storage and logistics segment. During the nine months ended September 30, 2023, we recorded a gain on the sale of approximately $132 million, which is reflected as an increase in our earnings from unconsolidated affiliates. Nine Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Corporate Total Crestwood Midstream Revenues $ 787.2 $ 243.4 $ 3,567.2 $ — $ 4,597.8 Intersegment revenues, net 421.2 137.8 (559.0) — — Costs of product/services sold 686.6 249.6 2,928.2 — 3,864.4 Operations and maintenance expense 78.6 28.6 36.8 — 144.0 General and administrative expense — — — 99.0 99.0 Loss on long-lived assets, net — (307.8) (4.1) — (311.9) Gain on acquisition — 75.3 — — 75.3 Earnings from unconsolidated affiliates, net — 9.4 2.8 — 12.2 Crestwood Midstream EBITDA $ 443.2 $ (120.1) $ 41.9 $ (99.0) $ 266.0 Crestwood Equity General and administrative expense — — — 4.8 4.8 Gain on long-lived assets (1) — 125.0 — — 125.0 Other income, net — — — 0.2 0.2 Crestwood Equity EBITDA $ 443.2 $ 4.9 $ 41.9 $ (103.6) $ 386.4 (1) Represents the elimination of the loss on long-lived assets of approximately $53 million recorded by CMLP related to the sale of our legacy assets in the Barnett Shale and a gain on long-lived assets of approximately $72 million recorded by CEQP related to the sale. For a further discussion of this transaction, see Note 3. Other Segment Information CEQP CMLP September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Total Assets Gathering and Processing North $ 3,921.3 $ 4,003.6 $ 3,921.3 $ 4,003.6 Gathering and Processing South 1,452.4 1,473.0 1,452.4 1,473.0 Storage and Logistics 946.1 1,057.6 946.1 1,057.6 Corporate 40.0 32.8 34.4 27.2 Total assets $ 6,359.8 $ 6,567.0 $ 6,354.2 $ 6,561.4

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2023
Revenue Recognition [Abstract]
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	The following table summarizes our contract assets and contract liabilities (in millions) : September 30, 2023 December 31, 2022 Contract assets (non-current) $ 6.8 $ 5.4 Contract liabilities (current) (1) $ 20.3 $ 11.7 Contract liabilities (non-current) (1) $ 207.4 $ 212.3 (1) During the three and nine months ended September 30, 2023, we recognized revenues of approximately $4.5 million and $14.9 million that were previously included in contract liabilities at December 31, 2022. The remaining change in our contract liabilities during the three and nine months ended September 30, 2023 is related to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of September 30, 2023 (in millions) : Remainder of 2023 $ 16.5 2024 46.4 2025 6.5 2026 4.9 2027 2.1 Thereafter 1.1 Total $ 77.5
Disaggregation of Revenue	The following tables summarize our revenues from contracts with customers disaggregated by type of product/service sold and by commodity type for each of our segments for the three and nine months ended September 30, 2023 and 2022 ( in millions ). We believe this summary best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors. Our non- Topic 606 revenues presented in the tables below primarily represents revenues related to our commodity-based derivatives. Three Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 32.2 $ 4.8 $ — $ — $ 37.0 Crude oil 16.9 1.9 — — 18.8 Water 51.0 8.4 — — 59.4 Processing Natural gas 20.0 6.9 — — 26.9 Storage Crude oil 0.6 — — — 0.6 NGLs — — 2.1 — 2.1 Pipeline Crude oil 1.4 0.1 0.6 — 2.1 NGLs — 6.8 0.2 (6.8) 0.2 Transportation NGLs — — 2.2 — 2.2 Rail Loading Crude oil — — 0.2 — 0.2 Product Sales Natural gas 27.4 47.5 78.2 (70.1) 83.0 Crude oil 139.4 0.8 352.2 (15.0) 477.4 NGLs 42.8 98.8 268.4 (31.3) 378.7 Water 1.0 — — — 1.0 Other 0.5 — 0.1 (0.2) 0.4 Total Topic 606 revenues 333.2 176.0 704.2 (123.4) 1,090.0 Non-Topic 606 revenues 0.5 (0.5) 49.4 — 49.4 Total revenues $ 333.7 $ 175.5 $ 753.6 $ (123.4) $ 1,139.4 Three Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 33.4 $ 10.1 $ — $ — $ 43.5 Crude oil 14.7 1.7 — — 16.4 Water 41.8 7.5 — — 49.3 Processing Natural gas 20.7 4.8 — — 25.5 Compression Natural gas — 4.7 — — 4.7 Storage Crude oil 0.6 — 0.1 — 0.7 NGLs — — 2.2 — 2.2 Pipeline Crude oil 1.5 0.1 0.6 — 2.2 NGLs — 5.2 0.1 (5.2) 0.1 Transportation NGLs — — 5.0 — 5.0 Product Sales Natural gas 109.6 144.4 248.4 (205.6) 296.8 Crude oil 120.9 — 362.8 (9.8) 473.9 NGLs 68.3 136.2 411.7 (58.9) 557.3 Water 2.1 — — — 2.1 Other 0.8 — 0.2 (0.5) 0.5 Total Topic 606 revenues 414.4 314.7 1,031.1 (280.0) 1,480.2 Non-Topic 606 revenues 0.4 0.5 84.9 — 85.8 Total revenues $ 414.8 $ 315.2 $ 1,116.0 $ (280.0) $ 1,566.0 Nine Months Ended September 30, 2023 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 95.5 $ 13.6 $ — $ — $ 109.1 Crude oil 46.3 6.0 — — 52.3 Water 139.9 25.2 — — 165.1 Processing Natural gas 56.6 19.6 — — 76.2 Storage Crude oil 1.7 — 0.1 (0.2) 1.6 NGLs — — 6.4 — 6.4 Pipeline Crude oil 3.7 0.4 1.5 — 5.6 NGLs — 17.7 0.3 (17.7) 0.3 Transportation NGLs — — 12.4 — 12.4 Rail Loading Crude oil — — 0.6 — 0.6 Product Sales Natural gas 95.1 113.6 211.9 (182.9) 237.7 Crude oil 377.2 1.1 954.4 (57.7) 1,275.0 NGLs 126.5 296.9 907.8 (91.3) 1,239.9 Water 2.9 — — — 2.9 Other 1.1 — 1.0 (0.4) 1.7 Total Topic 606 revenues 946.5 494.1 2,096.4 (350.2) 3,186.8 Non-Topic 606 revenues 1.6 (1.6) 236.9 — 236.9 Total revenues $ 948.1 $ 492.5 $ 2,333.3 $ (350.2) $ 3,423.7 Nine Months Ended September 30, 2022 Gathering and Processing North Gathering and Processing South Storage and Logistics Intersegment Elimination Total Topic 606 revenues Gathering Natural gas $ 92.2 $ 57.0 $ — $ — $ 149.2 Crude oil 43.6 4.6 — — 48.2 Water 117.7 13.0 — — 130.7 Processing Natural gas 54.8 7.1 — — 61.9 Compression Natural gas — 11.3 — — 11.3 Storage Crude oil 1.7 — 0.4 (0.2) 1.9 NGLs — — 6.9 — 6.9 Pipeline Crude oil 4.2 0.5 1.5 (0.1) 6.1 NGLs — 5.2 0.2 (5.2) 0.2 Transportation NGLs — — 16.3 — 16.3 Rail Loading Crude oil — — 0.4 — 0.4 Product Sales Natural gas 269.1 145.3 508.0 (331.2) 591.2 Crude oil 394.9 — 1,130.3 (33.9) 1,491.3 NGLs 222.7 136.2 1,505.6 (187.9) 1,676.6 Water 5.0 — — — 5.0 Other 1.4 — 0.5 (0.5) 1.4 Total Topic 606 revenues 1,207.3 380.2 3,170.1 (559.0) 4,198.6 Non-Topic 606 revenues 1.1 1.0 397.1 — 399.2 Total revenues $ 1,208.4 $ 381.2 $ 3,567.2 $ (559.0) $ 4,597.8

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2023
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table shows transactions with our affiliates which are reflected in our consolidated statements of operations ( in millions ). Three Months Ended Nine Months Ended September 30, September 30, 2023 2022 2023 2022 Revenues at CEQP and CMLP (1) $ — $ 140.8 $ — $ 372.7 Costs of product/services sold at CEQP and CMLP (2) $ — $ 51.3 $ 0.5 $ 232.9 Operations and maintenance expenses at CEQP and CMLP (3) $ 1.0 $ 2.6 $ 4.6 $ 12.4 General and administrative expenses charged by CEQP to CMLP, net (4) $ 5.4 $ 8.5 $ 22.4 $ 23.5 General and administrative expenses at CEQP and CMLP (5) $ — $ — $ — $ 1.3 (1) Includes (i) $83.0 million and $218.9 million during the three and nine months ended September 30, 2022 primarily related to the sale of crude oil and NGLs to a subsidiary of Chord; (ii) $57.4 million and $148.6 million during the three and nine months ended September 30, 2022 primarily related to gathering and processing services provided to a subsidiary of Chord; (iii) $0.3 million and $3.9 million during the three and nine months ended September 30, 2022 related to the sale of NGLs to a subsidiary of Crestwood Permian; and (iv) $0.1 million and $1.3 million during the three and nine months ended September 30, 2022 related to compressor leases with a subsidiary of Crestwood Permian. (2) Includes (i) $0.3 million during the nine months ended September 30, 2023 and $0.3 million and $1.7 million during the three and nine months ended September 30, 2022 primarily related to purchases of natural gas from a subsidiary of Tres Holdings; (ii) $0.2 million during the nine months ended September 30, 2023 and $0.3 million during both the three and nine months ended September 30, 2022 related to gathering services under agreements with Crestwood Permian Basin; (iii) $41.5 million and $114.1 million during the three and nine months ended September 30, 2022 primarily related to purchases of NGLs from a subsidiary of Chord; and (iv) $9.2 million and $116.8 million during the three and nine months ended September 30, 2022 related to purchases of natural gas and NGLs from a subsidiary of Crestwood Permian. (3) We have operating agreements with certain of our unconsolidated affiliates pursuant to which we charge them operations and maintenance expenses in accordance with their respective agreements, and these charges are reflected as a reduction of operations and maintenance expenses in our consolidated statements of operations. During the nine months ended September 30, 2023, we charged $1.5 million to Tres Holdings and during the three and nine months ended September 30, 2023, we charged $1.0 million and $3.1 million to Crestwood Permian Basin. During the three and nine months ended September 30, 2022, we charged $1.2 million and $3.5 million to Tres Holdings, $1.0 million to Crestwood Permian Basin in both periods and $0.4 million and $7.9 million to Crestwood Permian. (4) Includes $6.5 million and $25.7 million of unit-based compensation allocated from CEQP to CMLP during the three and nine months ended September 30, 2023 and $9.6 million and $26.8 million during the three and nine months ended September 30, 2022. In addition, includes $1.1 million and $3.3 million of CMLP’s general and administrative costs allocated to CEQP during the three and nine months ended September 30, 2023 and $1.1 million and $3.3 million during the three and nine months ended September 30, 2022. (5) Represents general and administrative expenses related to a transition services agreement with Chord.
Schedule of Related Party Receivables and Payables	The following table shows accounts receivable and accounts payable from our affiliates ( in millions ): September 30, December 31, Accounts receivable at CEQP and CMLP $ 0.4 $ 1.6 Accounts payable at CEQP and CMLP $ 0.1 $ 3.0

Organization and Business Des_2

Organization and Business Description (Details) $ in Billions				9 Months Ended
	Nov. 03, 2023 USD ($)	Aug. 16, 2023 shares	Feb. 01, 2022 USD ($) shares	Sep. 30, 2023	Nov. 02, 2023
Oasis Midstream Partners LP
Partnership Organization And Basis Of Presentation [Line Items]
Consideration transferred | $			$ 1.8
Oasis Midstream Partners LP | Chord Energy Corporation
Partnership Organization And Basis Of Presentation [Line Items]
Issued shares (in shares) | shares			20,900,000
Energy Transfer LP | Subsequent Event
Partnership Organization And Basis Of Presentation [Line Items]
Preferred Unit Cash Redemption Rate Percentage	108%				101%
Preferred Stock, Convertible, Conversion Ratio	0.1
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $	$ 7.1
Energy Transfer LP | Crestwood Equity Partners LP Common Unitholders
Partnership Organization And Basis Of Presentation [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share | shares		2.07
Crestwood Midstream Partners LP | Crestwood Equity Partners LP
Partnership Organization And Basis Of Presentation [Line Items]
Partnership interest				99.90%
Crestwood Midstream Partners LP | Crestwood Gas Services GP, LLC
Partnership Organization And Basis Of Presentation [Line Items]
Partnership interest				0.10%

Acquisition and Divestitures (D

Acquisition and Divestitures (Details) - USD ($) shares in Millions, $ in Millions			1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 11, 2022	Feb. 01, 2022	Aug. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Oct. 31, 2022	Jul. 10, 2022	Jul. 01, 2022	Apr. 30, 2022
Business Acquisition [Line Items]
Gain on acquisition				$ 0	$ 75.3	$ 0	$ 75.3
Crestwood Permian Basin Holdings LLC
Business Acquisition [Line Items]
Equity interest percentage	50%
Crestwood Midstream Partners LP
Business Acquisition [Line Items]
Gain on acquisition				$ 0	75.3	$ 0	75.3
Crestwood Permian Basin Holdings LLC
Business Acquisition [Line Items]
Ownership percentage									50%
Crestwood Permian Basin LLC
Business Acquisition [Line Items]
Ownership percentage	50%
Crestwood Permian Basin Holdings LLC | Crestwood Permian Basin LLC
Business Acquisition [Line Items]
Ownership percentage	50%
First Reserve Management, L.P. | Crestwood Permian Basin Holdings LLC
Business Acquisition [Line Items]
Equity interest percentage	50%
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Sale of assets, consideration											$ 24.7
Loss on sale							4.1
Gathering and Processing South | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Barnett Shale Assets
Business Acquisition [Line Items]
Sale of assets, consideration										$ 290
Loss on sale							$ 53.3
Gathering and Processing South | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Granite Wash
Business Acquisition [Line Items]
Loss on sale					7
Gathering and Processing South | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Marcellus Shale Assets
Business Acquisition [Line Items]
Sale of assets, consideration								$ 206
Gathering and Processing South | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Marcellus Shale Assets | Crestwood Midstream Partners LP
Business Acquisition [Line Items]
Loss on sale					(248.2)
Gathering and Processing South | Disposal Group, Not Discontinued Operations | Barnett Shale Assets | Crestwood Equity Partners LP
Business Acquisition [Line Items]
Loss on sale					$ (72)
Storage and Logistics | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Transportation Assets
Business Acquisition [Line Items]
Sale of assets, consideration			$ 8
Loss on sale			$ 2.5
Oasis Midstream Partners LP
Business Acquisition [Line Items]
Consideration transferred		$ 1,800
Cash payment		160
Oasis Midstream Partners LP | Chord Energy Corporation
Business Acquisition [Line Items]
Cash payment		$ 150
Issued shares (in shares)		20.9
Stock exchanged (in shares)		33.8
Oasis Midstream Partners LP | Oasis Midstream Public Unitholders
Business Acquisition [Line Items]
Issued shares (in shares)		12.9
Oasis Midstream Partners LP | Oasis Midstream Partners LP
Business Acquisition [Line Items]
Stock exchanged (in shares)		14.8
Oasis Midstream Partners LP | Oasis Petroleum General Partners
Business Acquisition [Line Items]
Cash payment		$ 10
Sendero Midstream Partners, LP
Business Acquisition [Line Items]
Cash payment	$ 631.2
Crestwood Permian Basin Holdings LLC
Business Acquisition [Line Items]
Gain on acquisition	$ 75.3
Crestwood Permian Basin Holdings LLC | Crestwood Equity Partners LP
Business Acquisition [Line Items]
Percentage of voting rights acquired	100%
Crestwood Permian Basin Holdings LLC | First Reserve Management, L.P.
Business Acquisition [Line Items]
Cash payment	$ 5.9
Issued shares (in shares)	11.3

Certain Balance Sheet Informa_3

Certain Balance Sheet Information (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Accrued Expenses and Other Liabilities [Line Items]
Operating leases	$ 11.1	$ 10.9
Finance leases	1.7	1.9
Contract liabilities	20.3	11.7
Total CMLP accrued expenses and other liabilities	183.6	180.8
Contract liabilities	207.4	212.3
Operating leases	15.4	17.4
Other long-term liabilities	323.4	333.4
Crestwood Midstream Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	56.9	66.5
Accrued property taxes	10.5	8.4
Income tax payable	0.7	0.9
Interest payable	64.4	43.2
Accrued additions to property, plant and equipment	16.3	35.6
Operating leases	11.1	10.9
Finance leases	1.7	1.9
Contract liabilities	20.3	11.7
Asset retirement obligations	0.8	0.4
Total CMLP accrued expenses and other liabilities	182.7	179.5
Contract liabilities	207.4	212.3
Intangible liabilities, net	45.5	50
Operating leases	15.4	17.4
Asset retirement obligations	38.5	36.4
Other long-term liabilities	321.3	330.3
Crestwood Midstream Partners LP | Other
Accrued Expenses and Other Liabilities [Line Items]
Other long-term liabilities	14.5	14.2
Crestwood Equity Partners LP
Accrued Expenses and Other Liabilities [Line Items]
Accrued expenses	0.9	1.2
Income tax payable	0	0.1
Total CMLP accrued expenses and other liabilities	183.6	180.8
Other long-term liabilities	323.4	333.4
Crestwood Equity Partners LP | Other
Accrued Expenses and Other Liabilities [Line Items]
Other long-term liabilities	$ 2.1	$ 3.1

Investments in Unconsolidated_3

Investments in Unconsolidated Affiliates (Narrative) (Details) - Tres Palacios Holdings LLC - USD ($) $ in Millions			9 Months Ended
	Apr. 03, 2023	Feb. 20, 2023	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Proceeds from sale	$ 178	$ 335
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale	$ 132		$ 132

Investments in Unconsolidated_4

Investments in Unconsolidated Affiliates (Net Investments In and Earnings (Loss) from Unconsolidated Affiliates) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Apr. 03, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Jul. 11, 2022	Jul. 10, 2022
Schedule of Equity Method Investments [Line Items]
Investment		$ 77.1		$ 77.1		$ 119.5
Earnings from unconsolidated affiliates, net		1.1	$ 3.2	135.2	$ 12.2
Crestwood Equity Partners LP | Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Percentage of voting rights acquired							100%
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Equity interest percentage							50%
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment		0		0		0
Earnings from unconsolidated affiliates, net		0	1.3	0	8.7
Ownership percentage								50%
Crestwood Permian Basin LLC
Schedule of Equity Method Investments [Line Items]
Investment		74		74		76.5
Earnings from unconsolidated affiliates, net		1.1	0.7	2	0.7
Ownership percentage							50%
Difference between carrying amount and underlying equity		2.2		2.2
Amortization		0.1	0.1	0.1	0.1
Crestwood Permian Basin LLC | Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage							50%
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Investment		0		0		39.8
Earnings from unconsolidated affiliates, net		0.1	1.3	133.6	3.2
Difference between carrying amount and underlying equity	$ 19.9
Amortization			0.3	0.3	0.9
Tres Palacios Holdings LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale	$ 132			132
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Investment		3.1		3.1		$ 3.2
Earnings from unconsolidated affiliates, net		$ (0.1)	$ (0.1)	$ (0.4)	$ (0.4)

Investments in Unconsolidated_5

Investments in Unconsolidated Affiliates (Distributions and Contributions) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Distributions	$ 6.3	$ 20.7
Contributions	7.2	90.2
Crestwood Permian Basin LLC
Schedule of Equity Method Investments [Line Items]
Distributions	6.3	2.2
Contributions	1.8	0
Tres Palacios Holdings LLC
Schedule of Equity Method Investments [Line Items]
Distributions	0	4.9
Contributions	5.1	6.7
Powder River Basin Industrial Complex, LLC
Schedule of Equity Method Investments [Line Items]
Distributions	0	0
Contributions	0.3	0
Crestwood Permian Basin Holdings LLC
Schedule of Equity Method Investments [Line Items]
Distributions	0	13.6
Contributions	$ 0	$ 83.5

Risk Management (Risk Managemen

Risk Management (Risk Management Activities) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Product revenues	$ 49.1	$ 84.7	$ 236	$ 395.7
Commodity contract
Derivative Instruments, Gain (Loss) [Line Items]
Product costs, net	$ 18	$ (45)	$ (13.5)	$ 6.3

Risk Management (Notional Amoun

Risk Management (Notional Amounts and Terms of Company's Derivative Financial Instruments) (Details) bcf in Millions, MMBbls in Millions	Sep. 30, 2023 bcf MMBbls	Dec. 31, 2022 bcf MMBbls
Propane, ethane, butane, heating oil and crude oil (MMBbls) | Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount | MMBbls	72.9	67.2
Propane, ethane, butane, heating oil and crude oil (MMBbls) | Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount | MMBbls	78.7	70.2
Natural gas (Bcf) | Fixed Price Payor
Derivative [Line Items]
Derivative, notional amount | bcf	11.3	44.2
Natural gas (Bcf) | Fixed Price Receiver
Derivative [Line Items]
Derivative, notional amount | bcf	12.8	48.4

Risk Management (Narrative) (De

Risk Management (Narrative) (Details) - Price Risk Contracts Member - Maximum	9 Months Ended
	Sep. 30, 2023
Derivative [Line Items]
Remaining maturity	36 months
Percent of contracts expiring in the next twelve months	88%

Fair Value Measurements (Assets

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	$ 263.1	$ 537.1
Other investments	2.8	2.6
Total assets at fair value	265.9	539.7
Netting agreements	(213.9)	(452.1)
Assets, Collateral/Margin Received or Paid	(11.2)	(12.2)
Assets from price risk management, total	38	72.8
Total assets at fair value	40.8	75.4
Collateral Already Posted, Aggregate Fair Value	3.9	25.6
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	223.2	497.7
Netting agreements	(213.9)	(452.1)
Liabilities, Collateral/Margin Received or Paid	8.3	21.7
Gross Liabilities From Price Risk Management With Credit-Risk-Related Contingent Features	217.7	485.8
Aggregate fair value of commodity derivative instruments	7.7	8.1
Liabilities from price risk management without credit-risk-related contingent features	5.5	11.9
Additional Collateral, Aggregate Fair Value	4.4	3.9
Derivative, Net Liability Position, Aggregate Fair Value, Without Credit-Risk Contingent Features	9.9	15.8
Liabilities, Fair Value Disclosure, Total	17.6	23.9
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	14.5	62.8
Other investments	2.8	2.6
Total assets at fair value	17.3	65.4
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	11.5	65.7
Gross Liabilities From Price Risk Management With Credit-Risk-Related Contingent Features	11.5	65.7
Liabilities from price risk management without credit-risk-related contingent features	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	248.6	474.3
Other investments	0	0
Total assets at fair value	248.6	474.3
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	211.7	432
Gross Liabilities From Price Risk Management With Credit-Risk-Related Contingent Features	206.2	420.1
Liabilities from price risk management without credit-risk-related contingent features	5.5	11.9
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from price risk management	0	0
Other investments	0	0
Total assets at fair value	0	0
Liabilities, Fair Value Disclosure, Excluding Netting Adjustments	0	0
Gross Liabilities From Price Risk Management With Credit-Risk-Related Contingent Features	0	0
Liabilities from price risk management without credit-risk-related contingent features	$ 0	$ 0

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Carrying Values and Estimated Fair Values of Senior Notes) (Details) - Crestwood Midstream Partners LP - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
2025 Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 498.4	$ 497.6
Fair Value	491.8	486.7
2027 Senior Notes
Debt Instrument [Line Items]
Carrying Amount	596.1	595.3
Fair Value	576.7	556.9
February 2029 Senior Notes
Debt Instrument [Line Items]
Carrying Amount	693.1	692.1
Fair Value	674.4	642.1
April 2029 Senior Notes
Debt Instrument [Line Items]
Carrying Amount	473.5	476.7
Fair Value	464.2	450
2031 Senior Notes
Debt Instrument [Line Items]
Carrying Amount	591.6	0
Fair Value	$ 611.5	$ 0

Long-Term Debt (Components Of L

Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jan. 31, 2023	Dec. 31, 2022	Feb. 01, 2022
Debt Instrument [Line Items]
Less: deferred financing costs, net	$ 31		$ 31			$ 27.5
Total debt	3,302.5		3,302.5			3,378.3
April 2029 Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Fair Value Adjustment	23.5		23.5			26.7
Amortization	1.1	$ 1.1	3.2	$ 2.9
April 2029 Senior Notes | Oasis Midstream Partners LP
Debt Instrument [Line Items]
Debt Instrument, Fair Value Adjustment							$ 30.7
Senior Notes | 2025 Senior Notes
Debt Instrument [Line Items]
Senior notes	500		500			500
Senior Notes | 2027 Senior Notes
Debt Instrument [Line Items]
Senior notes	600		600			600
Senior Notes | February 2029 Senior Notes
Debt Instrument [Line Items]
Senior notes	700		700			700
Senior Notes | April 2029 Senior Notes
Debt Instrument [Line Items]
Senior notes	450		450			450
Senior Notes | 2031 Senior Notes
Debt Instrument [Line Items]
Senior notes	600		600		$ 600	0
Revolving Credit Facility | Crestwood Midstream Revolver
Debt Instrument [Line Items]
CMLP Credit Facility	460		460			922.3
Revolving Credit Facility | CPBH Credit Facility
Debt Instrument [Line Items]
CMLP Credit Facility	$ 0		$ 0			$ 206.8

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)			1 Months Ended	9 Months Ended
	Jul. 11, 2022 USD ($)	Feb. 01, 2022 USD ($)	Jan. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)
Debt Instrument [Line Items]
Debt term				5 years
Senior secured leverage ratio, maximum				3.50
Senior secured leverage ratio				0.61
Oasis Midstream Partners LP
Debt Instrument [Line Items]
Cash payment		$ 160,000,000
Sendero Midstream Partners, LP
Debt Instrument [Line Items]
Cash payment	$ 631,200,000
Crestwood Midstream Revolver
Debt Instrument [Line Items]
Consolidated leverage, ratio maximum				5.50
Crestwood Midstream Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
CMLP Credit Facility				$ 460,000,000	$ 922,300,000
Interest coverage ratio minimum				2.50
Total funded debt to consolidated ebitda				4.35
Consolidated EBITDA to consolidated interest expense ratio				3.65
Available capacity				$ 872,000,000
Letters of credit outstanding				$ 5,700,000	$ 8,200,000
Interest rate				7.68%	6.40%
Crestwood Midstream Revolver | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Interest rate				7.67%	6.28%
Crestwood Midstream Revolver | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Interest rate				9.75%	8.50%
Oasis Midstream Partners LP | Revolving Credit Facility
Debt Instrument [Line Items]
CMLP Credit Facility		$ 218,000,000
Oasis Midstream Partners LP | Revolving Credit Facility | Sendero Midstream Partners, LP
Debt Instrument [Line Items]
CMLP Credit Facility						$ 631,200,000
2031 Senior Notes | Crestwood Midstream Partners LP
Debt Instrument [Line Items]
Senior notes				$ 591,600,000	$ 0
Revolving Loan Facility | Crestwood Midstream Partners LP
Debt Instrument [Line Items]
Borrowing capacity				1,750,000,000
Senior Notes | 2031 Senior Notes
Debt Instrument [Line Items]
Senior notes			$ 600,000,000	$ 600,000,000	$ 0
Stated percentage			7.375%
Proceeds from debt offering			$ 592,500,000

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Jan. 09, 2023	Oct. 24, 2022	Sep. 30, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Damages awarded		$ 20.7
Pre-judgement interest award		17.7
Attorney fees and other costs		$ 4.7
Damages paid	$ 21.2
Accrued amounts for outstanding legal matters			$ 8.9	$ 35

Commitments and Contingencies_3

Commitments and Contingencies (Environmental Compliance) (Details) - Fort Berthold Indian Reservation - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Site Contingency [Line Items]
Accrual of environmental loss contingencies	$ 1	$ 1
Minimum
Site Contingency [Line Items]
Potential liability for environmental exposures	$ 1

Commitments and Contingencies_4

Commitments and Contingencies (Self Insurance) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Crestwood Equity Partners LP
Other Commitments [Line Items]
Self-insurance reserves	$ 5.7	$ 5.6
Self-insurance reserves expected to be paid	3.2
Crestwood Midstream Partners LP
Other Commitments [Line Items]
Self-insurance reserves	5	$ 4.8
Self-insurance reserves expected to be paid	$ 2.7

Leases (Details)

Leases (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	Apr. 30, 2022
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net	$ 23.3		$ 23.3		$ 24.4
Operating leases	11.1		11.1		10.9
Operating leases	15.4		15.4		17.4
Total operating lease liabilities	26.5		26.5		28.3
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	9.8		9.8		13.6
Property, plant and equipment	5,467.5		5,467.5		5,353.2
Finance Lease, Right-of-Use Asset, Accumulated Amortization	4.9		4.9		8.9
Less: accumulated depreciation	999.6		999.6		822.8
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	4.9		4.9		4.7
Property, plant and equipment, net	4,467.9		4,467.9		4,530.4
Finance leases	1.7		1.7		1.9
Finance Lease, Liability, Noncurrent	3		3		2.7
Finance Lease, Liability	4.7		4.7		$ 4.6
Operating lease expense	3.5	$ 3.4	10.9	$ 9.2
Finance lease expense	$ 0.6	0.9	$ 2.1	2.7
Operating lease, liability, current, extensible enumeration	Accrued expenses and other liabilities		Accrued expenses and other liabilities		Accrued expenses and other liabilities
Finance lease, liability, noncurrent, extensible enumeration	Other long-term liabilities		Other long-term liabilities		Other long-term liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities		Accrued expenses and other liabilities		Accrued expenses and other liabilities
Operating lease, liability, noncurrent, extensible enumeration	Other long-term liabilities		Other long-term liabilities		Other long-term liabilities
Loss on long-lived assets, net	$ 2.6	$ 175.9	$ 4.8	186.9
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Lessee, Lease, Description [Line Items]
Loss on sale				$ 4.1
Sale of assets, consideration						$ 24.7

Partners' Capital (Schedule of

Partners' Capital (Schedule of Partners' Capital Account, Distributions) (Details) - USD ($) $ / shares in Units, $ in Millions

9 Months Ended

Aug. 14, 2023

Aug. 07, 2023

May 15, 2023

May 08, 2023

Feb. 14, 2023

Feb. 07, 2023

Aug. 12, 2022

Aug. 05, 2022

May 13, 2022

May 06, 2022

Feb. 14, 2022

Feb. 07, 2022

Sep. 30, 2023

Sep. 30, 2022

Distribution Made to Limited Partner [Line Items]

Record Date

Aug. 07, 2023

May 08, 2023

Feb. 07, 2023

Aug. 05, 2022

May 06, 2022

Feb. 07, 2022

Payment Date

Aug. 14, 2023

May 15, 2023

Feb. 14, 2023

Aug. 12, 2022

May 13, 2022

Feb. 14, 2022

Per Unit Rate

$ 0.655

$ 0.655

$ 0.655

$ 0.655

$ 0.655

$ 0.625

Distribution Made to Limited Partner, Cash Distributions Paid

$ 68.9

$ 68.9

$ 68.9

$ 71.6

$ 64.2

$ 60.9

$ 206.7

$ 196.7

Partners' Capital (Components o

Partners' Capital (Components of Net Income (Loss) Attributable to Non-Controlling Interests) (Details) $ in Millions	1 Months Ended
	Oct. 31, 2023 USD ($)
Crestwood Niobrara LLC | Subsequent Event
Distribution Made to Limited Partner [Line Items]
Distributions to non-controlling partner	$ (10.3)

Partners' Capital (Narrative) (

Partners' Capital (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions

1 Months Ended

3 Months Ended

9 Months Ended

Oct. 31, 2023

Oct. 23, 2023

Oct. 12, 2023

Aug. 14, 2023

Aug. 07, 2023

May 15, 2023

May 08, 2023

Feb. 14, 2023

Feb. 07, 2023

Sep. 15, 2022

Aug. 12, 2022

Aug. 05, 2022

Jul. 11, 2022

May 13, 2022

May 06, 2022

Feb. 14, 2022

Feb. 07, 2022

Feb. 01, 2022

Oct. 31, 2023

Feb. 28, 2023

Sep. 30, 2023

Sep. 30, 2022

Mar. 31, 2022

Sep. 30, 2023

Sep. 30, 2022

Distribution Made to Limited Partner [Line Items]

Payment Date

Aug. 14, 2023

May 15, 2023

Feb. 14, 2023

Aug. 12, 2022

May 13, 2022

Feb. 14, 2022

Record Date

Aug. 07, 2023

May 08, 2023

Feb. 07, 2023

Aug. 05, 2022

May 06, 2022

Feb. 07, 2022

Distributions to preferred unitholders

$ 45.1

$ 45

Distribution Made to Limited Partner, Cash Distributions Paid

$ 68.9

$ 68.9

$ 68.9

$ 71.6

$ 64.2

$ 60.9

$ 206.7

196.7

Partners' Capital Account, Treasury Units, Purchased

$ 123.7

Change of Control Redemption Price Percentage of Liquidation Value

105%

105%

Oasis Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Cash payment

$ 160

Common Units

Distribution Made to Limited Partner [Line Items]

Stock exchanged (in shares)

4,600,000

Crestwood Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Distribution Made to General Partner, Cash Distributions Paid

$ 264.8

537.6

Crestwood Permian Basin Holdings LLC

Distribution Made to Limited Partner [Line Items]

Equity interest percentage

50%

Crestwood Permian Basin Holdings LLC | First Reserve Management, L.P.

Distribution Made to Limited Partner [Line Items]

Equity interest percentage

50%

Partners' Capital

Distribution Made to Limited Partner [Line Items]

Partners' Capital Account, Treasury Units, Purchased

$ 123.7

Partners' Capital | Crestwood Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Partners' Capital Account, Non-Cash Contributions

$ 127.3

1,075.1

127.3

$ 1,075.1

Partners' Capital Account, Contributions

$ 149.4

$ 14.9

$ 149.4

$ 14.9

Common Units

Distribution Made to Limited Partner [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period

217,702

Oasis Midstream Public Unitholders | Oasis Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Issued shares (in shares)

12,900,000

Oasis Petroleum Inc. | Oasis Midstream Partners LP

Distribution Made to Limited Partner [Line Items]

Issued shares (in shares)

20,900,000

First Reserve Management, L.P. | Crestwood Permian Basin Holdings LLC

Distribution Made to Limited Partner [Line Items]

Issued shares (in shares)

11,300,000

Cash payment

$ 5.9

Subsequent Event

Distribution Made to Limited Partner [Line Items]

Payment Date

Oct. 31, 2023

Record Date

Oct. 23, 2023

Distributions to preferred unitholders

$ 15

Subsequent Event | Crestwood Niobrara LLC

Distribution Made to Limited Partner [Line Items]

Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders

$ 10.3

Cash Distribution | Subsequent Event

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distributions Declared, Per Unit

$ 0.655

Cash Distribution | Subsequent Event | Energy Transfer LP

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distributions Declared, Per Unit

0.003

Cash Distribution | Subsequent Event | Preferred Units | Energy Transfer LP

Distribution Made to Limited Partner [Line Items]

Distribution Made to Limited Partner, Distributions Declared, Per Unit

$ 0.0003

Crestwood LTIP

Distribution Made to Limited Partner [Line Items]

Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount

$ 4.5

$ 4.5

Crestwood LTIP | Performance Shares

Distribution Made to Limited Partner [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period

245,929

161,278

Share-based Payment Arrangement, Noncash Expense

$ 0.5

$ 1.9

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

Non-Controlling Partners

Distribution Made to Limited Partner [Line Items]

Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders

$ 31

$ 31

Partners' Capital (Rollforward

Partners' Capital (Rollforward of Non-controlling Interest) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	$ 434.4	$ 434.6
Net income attributable to non-controlling partner(1)	52.6	30.8
Ending balance	456	434.4
Crestwood Niobrara LLC
Increase (Decrease) in Temporary Equity [Roll Forward]
Redeemable Noncontrolling Interest, Equity, Redemption Value	21.7
Non-Controlling Partners
Increase (Decrease) in Temporary Equity [Roll Forward]
Distributions to non-controlling partner	$ (31)	$ (31)

Earnings Per Limited Partner _3

Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Allocated to Limited Partners	$ (35.1)	$ (68.3)	$ 107.9	$ (57.2)
Net Income (Loss) Available to Common Stockholders, Diluted	$ (35.1)	$ (68.3)	$ 107.9	$ (57.2)
Basic (units)	105.2	107.1	105.2	97.1
Dilutive units (units)	0	0	3.9	0
Diluted (units)	105.2	107.1	109.1	97.1
Basic (in dollars per share)	$ (0.33)	$ (0.64)	$ 1.03	$ (0.59)
Diluted (in dollars per share)	$ (0.33)	$ (0.64)	$ 0.99	$ (0.59)
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7.1	7.1	7.1	7.1
Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	0	0	3.8	0
Performance Shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.1	0.1	0	0.2
Dilutive units (units)	0	0	0.1	0
Crestwood Niobrara LLC | Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.8	3.9	0	3.9

Segments (Reconciliation of Net

Segments (Reconciliation of Net Income (Loss) to EBITDA) (Details) $ in Millions		3 Months Ended		9 Months Ended
	Apr. 03, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of Operating Segments | segment				3
Net income		$ 12.1	$ (43)	$ 205.6	$ 18.6
Interest and debt expense, net		56.9	47.6	167.9	123.8
Provision for income taxes		0.2	1.4	1.1	1.7
Depreciation, amortization and accretion		80.2	86.9	242.7	242.3
EBITDA		149.4	92.9	617.3	386.4
Gain (loss) on long-lived assets		(2.6)	(175.9)	(4.8)	(186.9)
Tres Palacios Holdings LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Segment Reporting, Other Significant Reconciling Item [Line Items]
Gain (loss) on sale	$ 132			132
Crestwood Midstream Partners LP
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income		21.4	(113)	217.8	(107.4)
Interest and debt expense, net		56.9	47.6	167.9	123.8
Provision for income taxes		0.2	1.4	1	1.6
Depreciation, amortization and accretion		80.1	86.8	242.5	248
EBITDA		158.6	22.8	629.2	266
Gain (loss) on long-lived assets		$ (2.6)	$ (247.6)	$ (4.8)	$ (311.9)

Segments (Summary Of Segment In

Segments (Summary Of Segment Information) (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
Net income	$ 12.1	$ (43)	$ 205.6	$ 18.6
Segment Reporting Information, Additional Information [Abstract]
Total revenues	1,139.4	1,566	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	166.7	144
General and administrative	30.2	33.9	86.8	103.8
Gain (loss) on long-lived assets	(2.6)	(175.9)	(4.8)	(186.9)
Gain on acquisition	0	75.3	0	75.3
Earnings from unconsolidated affiliates, net	1.1	3.2	135.2	12.2
Other income, net	0.2	0	0.3	0.2
EBITDA	149.4	92.9	617.3	386.4
Assets	6,359.8		6,359.8		$ 6,567
Intersegment Eliminations
Segment Reporting Information, Additional Information [Abstract]
Total revenues	(123.4)	(280)	(350.2)	(559)
Eliminations
Segment Reporting Information, Additional Information [Abstract]
Gain (Loss) on Disposition of Assets				53
Gathering and Processing North | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	333.7	414.8	948.1	1,208.4
Gathering and Processing South | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	175.5	315.2	492.5	381.2
Storage and Logistics | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	753.6	1,116	2,333.3	3,567.2
Crestwood Midstream Partners LP
Net income	21.4	(113)	217.8	(107.4)
Segment Reporting Information, Additional Information [Abstract]
Total revenues	1,139.4	1,566	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	166.7	144
General and administrative	20.8	32.3	74.6	99
Gain (loss) on long-lived assets	(2.6)	(247.6)	(4.8)	(311.9)
Gain on acquisition	0	75.3	0	75.3
Earnings from unconsolidated affiliates, net	1.1	3.2	135.2	12.2
EBITDA	158.6	22.8	629.2	266
Assets	6,354.2		6,354.2		6,561.4
Crestwood Midstream Partners LP | Corporate, Non-Segment
Segment Reporting Information, Additional Information [Abstract]
Total revenues	0	0	0	0
Costs of product/services sold	0	0	0	0
Operations and maintenance	0	0	0	0
General and administrative	20.8	32.3	74.6	99
Gain (loss) on long-lived assets	0	0	0.4	0
Gain on acquisition		0		0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	(20.8)	(32.3)	(74.2)	(99)
Assets	34.4		34.4		27.2
Crestwood Midstream Partners LP | Corporate and Eliminations
Segment Reporting Information, Additional Information [Abstract]
Total revenues	0	0	0	0
Crestwood Midstream Partners LP | Gathering and Processing North | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	262.8	272.6	717.1	787.2
Costs of product/services sold	158.4	230.2	447.7	686.6
Operations and maintenance	29.9	27.4	85.6	78.6
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	0	0.1	0
Gain on acquisition		0		0
Earnings from unconsolidated affiliates, net	0	0	0	0
EBITDA	145.4	157.2	414.9	443.2
Assets	3,921.3		3,921.3		4,003.6
Crestwood Midstream Partners LP | Gathering and Processing North | Intersegment Eliminations
Segment Reporting Information, Additional Information [Abstract]
Total revenues	70.9	142.2	231	421.2
Crestwood Midstream Partners LP | Gathering and Processing South | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	123	177.4	373.3	243.4
Costs of product/services sold	121.1	249.6	329.8	249.6
Operations and maintenance	14.9	14.3	45.2	28.6
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	0	(247.6)	(2.7)	(307.8)
Gain on acquisition		75.3		75.3
Earnings from unconsolidated affiliates, net	1.1	2	2	9.4
EBITDA	40.6	(119)	116.8	(120.1)
Assets	1,452.4		1,452.4		1,473
Crestwood Midstream Partners LP | Gathering and Processing South | Intersegment Eliminations
Segment Reporting Information, Additional Information [Abstract]
Total revenues	52.5	137.8	119.2	137.8
Crestwood Midstream Partners LP | Storage and Logistics | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
Total revenues	753.6	1,116	2,333.3	3,567.2
Costs of product/services sold	622.1	807	1,906.1	2,928.2
Operations and maintenance	12.1	13.3	35.9	36.8
General and administrative	0	0	0	0
Gain (loss) on long-lived assets	(2.6)	0	(2.6)	(4.1)
Gain on acquisition		0		0
Earnings from unconsolidated affiliates, net	0	1.2	133.2	2.8
EBITDA	(6.6)	16.9	171.7	41.9
Assets	946.1		946.1		1,057.6
Crestwood Midstream Partners LP | Storage and Logistics | Intersegment Eliminations
Segment Reporting Information, Additional Information [Abstract]
Total revenues	(123.4)	(280)	(350.2)	(559)
Crestwood Equity Partners LP
Segment Reporting Information, Additional Information [Abstract]
General and administrative	9.4	1.6	12.2	4.8
Elimination of Loss on Long-Lived Assets		71.7		125
Other income, net	0.2		0.3	0.2
EBITDA	149.4	92.9	617.3	386.4
Assets	6,359.8		6,359.8		6,567
Crestwood Equity Partners LP | Barnett Shale Assets
Segment Reporting Information, Additional Information [Abstract]
Gain (Loss) on Disposition of Assets				72
Crestwood Equity Partners LP | Corporate, Non-Segment
Segment Reporting Information, Additional Information [Abstract]
General and administrative	9.4	1.6	12.2	4.8
Elimination of Loss on Long-Lived Assets		0		0
Other income, net	0.2		0.3	0.2
EBITDA	(30)	(33.9)	(86.1)	(103.6)
Assets	40		40		32.8
Crestwood Equity Partners LP | Gathering and Processing North | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
General and administrative	0	0	0	0
Elimination of Loss on Long-Lived Assets		0		0
Other income, net	0		0	0
EBITDA	145.4	157.2	414.9	443.2
Assets	3,921.3		3,921.3		4,003.6
Crestwood Equity Partners LP | Gathering and Processing South | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
General and administrative	0	0	0	0
Elimination of Loss on Long-Lived Assets		71.7		125
Other income, net	0		0	0
EBITDA	40.6	(47.3)	116.8	4.9
Assets	1,452.4		1,452.4		1,473
Crestwood Equity Partners LP | Storage and Logistics | Operating Segments
Segment Reporting Information, Additional Information [Abstract]
General and administrative	0	0	0	0
Elimination of Loss on Long-Lived Assets		0		0
Other income, net	0		0	0
EBITDA	(6.6)	$ 16.9	171.7	$ 41.9
Assets	$ 946.1		$ 946.1		$ 1,057.6

Segments (Narrative) (Details)

Segments (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)	Jul. 10, 2022
Segment Reporting Information [Line Items]
Interest, taxes, depreciation and amortization included in earnings from equity method investments | $	$ 1.3	$ 2.5	$ 5.4	$ 12
Number of Operating Segments | segment			3
Crestwood Permian Basin Holdings LLC
Segment Reporting Information [Line Items]
Ownership percentage					50%

Revenues (Narrative) (Details)

Revenues (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Revenue Recognition [Abstract]
ASC 606 accounts receivable	$ 336.5	$ 368.2

Revenues (Contract Assets and L

Revenues (Contract Assets and Liabilities) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Contract Assets and Contract Liabilities [Line Items]
Contract Assets (Non-current)	$ 6.8	$ 6.8	$ 5.4
Contract liabilities	20.3	20.3	11.7
Contract liabilities	207.4	207.4	$ 212.3
Contract with Customer, Liability, Revenue Recognized	$ 4.5	$ 14.9

Revenues (Disaggregation of Rev

Revenues (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,139.4	$ 1,566	$ 3,423.7	$ 4,597.8
Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	37	43.5	109.1	149.2
Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	18.8	16.4	52.3	48.2
Water Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	59.4	49.3	165.1	130.7
Natural Gas Processing
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	26.9	25.5	76.2	61.9
Natural Gas Compression
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues		4.7		11.3
Crude Oil Storage
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.6	0.7	1.6	1.9
NGL Storage
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	2.1	2.2	6.4	6.9
Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	2.1	2.2	5.6	6.1
NGL Pipeline
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.2	0.1	0.3	0.2
NGL Transportation
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	2.2	5	12.4	16.3
Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.2		0.6	0.4
Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	83	296.8	237.7	591.2
Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	477.4	473.9	1,275	1,491.3
NGL Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	378.7	557.3	1,239.9	1,676.6
Water Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	1	2.1	2.9	5
Other revenue
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.4	0.5	1.7	1.4
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Total revenues	(123.4)	(280)	(350.2)	(559)
Intersegment Eliminations | Natural Gas Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Crude Oil Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Water Gathering
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Natural Gas Processing
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Natural Gas Compression
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues		0		0
Intersegment Eliminations | Crude Oil Storage
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	(0.2)	(0.2)
Intersegment Eliminations | NGL Storage
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Crude Oil Pipeline
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	(0.1)
Intersegment Eliminations | NGL Pipeline
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(6.8)	(5.2)	(17.7)	(5.2)
Intersegment Eliminations | NGL Transportation
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Crude Oil Rail Loading
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0		0	0
Intersegment Eliminations | Natural Gas Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(70.1)	(205.6)	(182.9)	(331.2)
Intersegment Eliminations | Crude Oil Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(15)	(9.8)	(57.7)	(33.9)
Intersegment Eliminations | NGL Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(31.3)	(58.9)	(91.3)	(187.9)
Intersegment Eliminations | Water Product Sales
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Intersegment Eliminations | Other revenue
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(0.2)	(0.5)	(0.4)	(0.5)
Operating Segments | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total revenues	333.7	414.8	948.1	1,208.4
Operating Segments | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total revenues	175.5	315.2	492.5	381.2
Operating Segments | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total revenues	753.6	1,116	2,333.3	3,567.2
Operating Segments | Natural Gas Gathering | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	32.2	33.4	95.5	92.2
Operating Segments | Natural Gas Gathering | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	4.8	10.1	13.6	57
Operating Segments | Natural Gas Gathering | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Crude Oil Gathering | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	16.9	14.7	46.3	43.6
Operating Segments | Crude Oil Gathering | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	1.9	1.7	6	4.6
Operating Segments | Crude Oil Gathering | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Water Gathering | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	51	41.8	139.9	117.7
Operating Segments | Water Gathering | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	8.4	7.5	25.2	13
Operating Segments | Water Gathering | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Natural Gas Processing | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	20	20.7	56.6	54.8
Operating Segments | Natural Gas Processing | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	6.9	4.8	19.6	7.1
Operating Segments | Natural Gas Processing | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Natural Gas Compression | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues		0		0
Operating Segments | Natural Gas Compression | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues		4.7		11.3
Operating Segments | Natural Gas Compression | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues		0		0
Operating Segments | Crude Oil Storage | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.6	0.6	1.7	1.7
Operating Segments | Crude Oil Storage | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Crude Oil Storage | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0.1	0.1	0.4
Operating Segments | NGL Storage | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | NGL Storage | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | NGL Storage | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	2.1	2.2	6.4	6.9
Operating Segments | Crude Oil Pipeline | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	1.4	1.5	3.7	4.2
Operating Segments | Crude Oil Pipeline | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.1	0.1	0.4	0.5
Operating Segments | Crude Oil Pipeline | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.6	0.6	1.5	1.5
Operating Segments | NGL Pipeline | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | NGL Pipeline | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	6.8	5.2	17.7	5.2
Operating Segments | NGL Pipeline | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.2	0.1	0.3	0.2
Operating Segments | NGL Transportation | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | NGL Transportation | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | NGL Transportation | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	2.2	5	12.4	16.3
Operating Segments | Crude Oil Rail Loading | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0		0	0
Operating Segments | Crude Oil Rail Loading | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0		0	0
Operating Segments | Crude Oil Rail Loading | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.2		0.6	0.4
Operating Segments | Natural Gas Product Sales | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	27.4	109.6	95.1	269.1
Operating Segments | Natural Gas Product Sales | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	47.5	144.4	113.6	145.3
Operating Segments | Natural Gas Product Sales | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	78.2	248.4	211.9	508
Operating Segments | Crude Oil Product Sales | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	139.4	120.9	377.2	394.9
Operating Segments | Crude Oil Product Sales | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.8	0	1.1	0
Operating Segments | Crude Oil Product Sales | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	352.2	362.8	954.4	1,130.3
Operating Segments | NGL Product Sales | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	42.8	68.3	126.5	222.7
Operating Segments | NGL Product Sales | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	98.8	136.2	296.9	136.2
Operating Segments | NGL Product Sales | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	268.4	411.7	907.8	1,505.6
Operating Segments | Water Product Sales | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	1	2.1	2.9	5
Operating Segments | Water Product Sales | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Water Product Sales | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Other revenue | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.5	0.8	1.1	1.4
Operating Segments | Other revenue | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0	0	0	0
Operating Segments | Other revenue | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	0.1	0.2	1	0.5
Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	1,090	1,480.2	3,186.8	4,198.6
Revenue from Contract with Customer | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	(123.4)	(280)	(350.2)	(559)
Revenue from Contract with Customer | Operating Segments | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	333.2	414.4	946.5	1,207.3
Revenue from Contract with Customer | Operating Segments | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	176	314.7	494.1	380.2
Revenue from Contract with Customer | Operating Segments | Storage and Logistics
Disaggregation of Revenue [Line Items]
Total Topic 606 revenues	704.2	1,031.1	2,096.4	3,170.1
Product and Service, Other
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	49.4	85.8	236.9	399.2
Product and Service, Other | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0	0	0	0
Product and Service, Other | Operating Segments | Gathering and Processing North
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	0.5	0.4	1.6	1.1
Product and Service, Other | Operating Segments | Gathering and Processing South
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	(0.5)	0.5	(1.6)	1
Product and Service, Other | Operating Segments | Storage and Logistics
Disaggregation of Revenue [Line Items]
Non-Topic 606 revenues	$ 49.4	$ 84.9	$ 236.9	$ 397.1

Revenues (Remaining Performance

Revenues (Remaining Performance Obligations) (Details) $ in Millions	Sep. 30, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 77.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Amount	$ 16.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 46.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 6.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 4.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 2.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue, Remaining Performance Obligation, Amount	$ 1.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2037-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	14 years

Related Party Transactions (Det

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	$ 147.3
Total revenues	$ 1,139.4	$ 1,566	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	166.7	144
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
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	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
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	140.8	0	372.7
Costs of product/services sold	0	51.3	0.5	232.9
Operations and maintenance	1	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	83.2	0	222.7
Costs of product/services sold	0	51.3	0.5	232.9
Related Party | Product | Chord Energy Corporation
Related Party Transaction [Line Items]
Total revenues		83		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	57.6	0	150
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	146.6
Total revenues	1,139.4	1,566	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	166.7	144
General and administrative	20.8	32.3	74.6	99
Accounts receivable	350		350		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	83.2	0	222.7
Costs of product/services sold	0	51.3	0.5	232.9
Crestwood Midstream Partners LP | Related Party | Service
Related Party Transaction [Line Items]
Total revenues	0	57.6	0	150
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	$ 1	$ 3.1	$ 1