Segment Information - Financial Information and Assets (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting
Revenue from contracts with customers		$ 1,518.8	$ 2,596.1	$ 3,274.4	$ 4,855.0
Realized gain (loss) on derivatives		6.0	(30.8)	19.3	(46.9)
Change in fair value of interest rate swaps		5.3	35.3	3.9	20.2
Total revenues		1,530.1	2,600.6	3,297.6	4,828.3
Cost of sales, exclusive of operating expenses and depreciation and amortization	[1]	(1,019.0)	(2,105.1)	(2,290.9)	(3,899.6)
Adjusted gross margin		511.1	495.5	1,006.7	928.7
Operating expenses		(136.8)	(128.9)	(269.2)	(249.8)
Segment profit		374.3	366.6	737.5	678.9
Depreciation and amortization		(165.3)	(159.0)	(325.7)	(311.9)
Gross margin		209.0	207.6	411.8	367.0
Gain on disposition of assets		0.8	0.4	1.2	(4.7)
General and administrative		(27.9)	(28.4)	(57.4)	(57.4)
Interest expense, net of interest income		(68.8)	(55.5)	(137.3)	(110.6)
Gain on extinguishment of debt		0.0	(0.5)	0.0	(0.5)
Loss from unconsolidated affiliate investments		(4.6)	(1.2)	(4.7)	(2.3)
Other income		0.4	0.2	0.4	0.3
Income before non-controlling interest and income taxes		108.9	122.6	214.0	191.8
Capital expenditures		104.7	62.5	218.8	122.5
Permian
Segment Reporting
Revenue from contracts with customers		627.3	1,118.1	1,226.2	2,011.4
Realized gain (loss) on derivatives		5.4	(10.2)	1.4	(12.6)
Change in fair value of interest rate swaps		(7.9)	12.5	(1.6)	6.6
Total revenues		624.8	1,120.4	1,226.0	2,005.4
Cost of sales, exclusive of operating expenses and depreciation and amortization		(479.9)	(958.0)	(937.0)	(1,724.7)
Adjusted gross margin		144.9	162.4	289.0	280.7
Operating expenses		(53.1)	(50.3)	(101.2)	(95.6)
Segment profit		91.8	112.1	187.8	185.1
Depreciation and amortization		(41.5)	(37.1)	(81.5)	(73.8)
Gross margin		50.3	75.0	106.3	111.3
Gain on disposition of assets		0.1	0.0	0.1	0.0
General and administrative		0.0	0.0	0.0	0.0
Interest expense, net of interest income		0.0	0.0	0.0	0.0
Gain on extinguishment of debt			0.0		0.0
Loss from unconsolidated affiliate investments		0.0	0.0	0.0	0.0
Other income		0.0	0.0	0.0	0.0
Income before non-controlling interest and income taxes		50.4	75.0	106.4	111.3
Capital expenditures		51.6	34.7	108.3	68.9
Louisiana
Segment Reporting
Revenue from contracts with customers		841.1	1,633.7	1,946.8	3,158.1
Realized gain (loss) on derivatives		(7.8)	(2.5)	(0.6)	(9.1)
Change in fair value of interest rate swaps		18.2	11.8	9.2	6.2
Total revenues		851.5	1,643.0	1,955.4	3,155.2
Cost of sales, exclusive of operating expenses and depreciation and amortization		(715.0)	(1,519.2)	(1,688.9)	(2,907.9)
Adjusted gross margin		136.5	123.8	266.5	247.3
Operating expenses		(32.0)	(34.8)	(65.6)	(67.8)
Segment profit		104.5	89.0	200.9	179.5
Depreciation and amortization		(36.9)	(39.4)	(75.2)	(74.9)
Gross margin		67.6	49.6	125.7	104.6
Gain on disposition of assets		0.1	0.0	0.2	0.2
General and administrative		0.0	0.0	0.0	0.0
Interest expense, net of interest income		0.0	0.0	0.0	0.0
Gain on extinguishment of debt			0.0		0.0
Loss from unconsolidated affiliate investments		0.0	0.0	0.0	0.0
Other income		0.0	0.0	0.0	0.0
Income before non-controlling interest and income taxes		67.7	49.6	125.9	104.8
Capital expenditures		17.7	6.3	30.0	12.0
Oklahoma
Segment Reporting
Revenue from contracts with customers		264.3	450.6	577.1	845.0
Realized gain (loss) on derivatives		1.9	(15.8)	3.9	(19.5)
Change in fair value of interest rate swaps		2.0	8.2	0.6	1.1
Total revenues		268.2	443.0	581.6	826.6
Cost of sales, exclusive of operating expenses and depreciation and amortization		(130.5)	(321.3)	(324.5)	(598.1)
Adjusted gross margin		137.7	121.7	257.1	228.5
Operating expenses		(27.0)	(23.1)	(51.7)	(44.1)
Segment profit		110.7	98.6	205.4	184.4
Depreciation and amortization		(56.6)	(52.3)	(108.5)	(103.2)
Gross margin		54.1	46.3	96.9	81.2
Gain on disposition of assets		0.1	0.2	0.3	0.4
General and administrative		0.0	0.0	0.0	0.0
Interest expense, net of interest income		0.0	0.0	0.0	0.0
Gain on extinguishment of debt			0.0		0.0
Loss from unconsolidated affiliate investments		0.0	0.0	0.0	0.0
Other income		0.0	0.0	0.0	0.0
Income before non-controlling interest and income taxes		54.2	46.5	97.2	81.6
Capital expenditures		22.1	11.5	47.8	26.9
North Texas
Segment Reporting
Revenue from contracts with customers		167.6	276.8	348.5	518.7
Realized gain (loss) on derivatives		6.5	(2.3)	14.6	(5.7)
Change in fair value of interest rate swaps		(7.0)	2.8	(4.3)	6.3
Total revenues		167.1	277.3	358.8	519.3
Cost of sales, exclusive of operating expenses and depreciation and amortization		(75.1)	(189.7)	(164.7)	(347.1)
Adjusted gross margin		92.0	87.6	194.1	172.2
Operating expenses		(24.7)	(20.7)	(50.7)	(42.3)
Segment profit		67.3	66.9	143.4	129.9
Depreciation and amortization		(29.0)	(28.7)	(57.8)	(57.1)
Gross margin		38.3	38.2	85.6	72.8
Gain on disposition of assets		0.5	0.2	0.6	(5.3)
General and administrative		0.0	0.0	0.0	0.0
Interest expense, net of interest income		0.0	0.0	0.0	0.0
Gain on extinguishment of debt			0.0		0.0
Loss from unconsolidated affiliate investments		0.0	0.0	0.0	0.0
Other income		0.0	0.0	0.0	0.0
Income before non-controlling interest and income taxes		38.8	38.4	86.2	67.5
Capital expenditures		11.8	8.1	29.9	11.2
Corporate
Segment Reporting
Revenue from contracts with customers		(381.5)	(883.1)	(824.2)	(1,678.2)
Realized gain (loss) on derivatives		0.0	0.0	0.0	0.0
Change in fair value of interest rate swaps		0.0	0.0	0.0	0.0
Total revenues		(381.5)	(883.1)	(824.2)	(1,678.2)
Cost of sales, exclusive of operating expenses and depreciation and amortization		381.5	883.1	824.2	1,678.2
Adjusted gross margin		0.0	0.0	0.0	0.0
Operating expenses		0.0	0.0	0.0	0.0
Segment profit		0.0	0.0	0.0	0.0
Depreciation and amortization		(1.3)	(1.5)	(2.7)	(2.9)
Gross margin		(1.3)	(1.5)	(2.7)	(2.9)
Gain on disposition of assets		0.0	0.0	0.0	0.0
General and administrative		(27.9)	(28.4)	(57.4)	(57.4)
Interest expense, net of interest income		(68.8)	(55.5)	(137.3)	(110.6)
Gain on extinguishment of debt			(0.5)		(0.5)
Loss from unconsolidated affiliate investments		(4.6)	(1.2)	(4.7)	(2.3)
Other income		0.4	0.2	0.4	0.3
Income before non-controlling interest and income taxes		(102.2)	(86.9)	(201.7)	(173.4)
Capital expenditures		1.5	1.9	2.8	3.5
Product sales
Segment Reporting
Revenue from contracts with customers		1,239.3	2,370.5	2,715.6	4,414.4
Product sales | Permian
Segment Reporting
Revenue from contracts with customers		370.8	654.6	687.2	1,122.2
Product sales | Louisiana
Segment Reporting
Revenue from contracts with customers		793.7	1,546.6	1,840.0	2,983.5
Product sales | Oklahoma
Segment Reporting
Revenue from contracts with customers		60.0	131.3	160.1	245.4
Product sales | North Texas
Segment Reporting
Revenue from contracts with customers		14.8	38.0	28.3	63.3
Product sales | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Natural gas sales
Segment Reporting
Revenue from contracts with customers		218.5	720.9	560.9	1,229.7
Natural gas sales | Permian
Segment Reporting
Revenue from contracts with customers		76.4	323.0	205.7	518.6
Natural gas sales | Louisiana
Segment Reporting
Revenue from contracts with customers		92.5	272.9	224.3	484.4
Natural gas sales | Oklahoma
Segment Reporting
Revenue from contracts with customers		32.9	87.1	99.7	163.4
Natural gas sales | North Texas
Segment Reporting
Revenue from contracts with customers		16.7	37.9	31.2	63.3
Natural gas sales | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
NGL sales
Segment Reporting
Revenue from contracts with customers		647.1	1,167.4	1,513.0	2,321.9
NGL sales | Permian
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.4	0.0
NGL sales | Louisiana
Segment Reporting
Revenue from contracts with customers		648.6	1,163.7	1,506.5	2,315.2
NGL sales | Oklahoma
Segment Reporting
Revenue from contracts with customers		0.4	3.6	9.0	6.7
NGL sales | North Texas
Segment Reporting
Revenue from contracts with customers		(1.9)	0.1	(2.9)	0.0
NGL sales | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude oil and condensate sales
Segment Reporting
Revenue from contracts with customers		373.7	482.2	641.7	862.8
Crude oil and condensate sales | Permian
Segment Reporting
Revenue from contracts with customers		294.4	331.6	481.1	603.6
Crude oil and condensate sales | Louisiana
Segment Reporting
Revenue from contracts with customers		52.6	110.0	109.2	183.9
Crude oil and condensate sales | Oklahoma
Segment Reporting
Revenue from contracts with customers		26.7	40.6	51.4	75.3
Crude oil and condensate sales | North Texas
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude oil and condensate sales | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Product sales—related parties
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Product sales—related parties | Permian
Segment Reporting
Revenue from contracts with customers		204.1	427.5	441.6	827.3
Product sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers		5.3	43.1	9.7	80.0
Product sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers		102.3	242.6	220.3	451.0
Product sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers		69.0	169.8	151.2	319.7
Product sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers		(380.7)	(883.0)	(822.8)	(1,678.0)
NGL sales—related parties
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
NGL sales—related parties | Permian
Segment Reporting
Revenue from contracts with customers		204.1	427.5	441.6	827.3
NGL sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers		5.3	43.1	9.7	80.0
NGL sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers		102.3	242.6	220.3	450.7
NGL sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers		66.2	165.8	145.7	312.7
NGL sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers		(377.9)	(879.0)	(817.3)	(1,670.7)
Crude oil and condensate sales—related parties
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude oil and condensate sales—related parties | Permian
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude oil and condensate sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude oil and condensate sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.3
Crude oil and condensate sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers		2.8	4.0	5.5	7.0
Crude oil and condensate sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers		(2.8)	(4.0)	(5.5)	(7.3)
Midstream services
Segment Reporting
Revenue from contracts with customers		279.5	225.6	558.8	440.6
Midstream services | Permian
Segment Reporting
Revenue from contracts with customers		52.4	36.0	97.4	61.9
Midstream services | Louisiana
Segment Reporting
Revenue from contracts with customers		42.1	44.0	97.1	94.5
Midstream services | Oklahoma
Segment Reporting
Revenue from contracts with customers		102.0	76.6	196.7	148.5
Midstream services | North Texas
Segment Reporting
Revenue from contracts with customers		83.0	69.0	167.6	135.7
Midstream services | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Gathering and transportation
Segment Reporting
Revenue from contracts with customers		160.4	120.9	310.6	232.3
Gathering and transportation | Permian
Segment Reporting
Revenue from contracts with customers		29.3	19.9	52.6	33.5
Gathering and transportation | Louisiana
Segment Reporting
Revenue from contracts with customers		18.7	15.7	38.7	32.0
Gathering and transportation | Oklahoma
Segment Reporting
Revenue from contracts with customers		60.5	44.7	115.3	87.4
Gathering and transportation | North Texas
Segment Reporting
Revenue from contracts with customers		51.9	40.6	104.0	79.4
Gathering and transportation | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Processing
Segment Reporting
Revenue from contracts with customers		81.5	66.7	163.2	128.0
Processing | Permian
Segment Reporting
Revenue from contracts with customers		14.5	9.9	28.5	17.7
Processing | Louisiana
Segment Reporting
Revenue from contracts with customers		0.1	0.3	0.4	0.8
Processing | Oklahoma
Segment Reporting
Revenue from contracts with customers		36.4	28.6	71.7	54.0
Processing | North Texas
Segment Reporting
Revenue from contracts with customers		30.5	27.9	62.6	55.5
Processing | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
NGL services
Segment Reporting
Revenue from contracts with customers		17.5	18.5	45.3	42.4
NGL services | Permian
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
NGL services | Louisiana
Segment Reporting
Revenue from contracts with customers		17.4	18.4	45.2	42.3
NGL services | Oklahoma
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
NGL services | North Texas
Segment Reporting
Revenue from contracts with customers		0.1	0.1	0.1	0.1
NGL services | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Crude services
Segment Reporting
Revenue from contracts with customers		17.7	18.6	34.9	36.2
Crude services | Permian
Segment Reporting
Revenue from contracts with customers		7.0	6.0	13.0	10.3
Crude services | Louisiana
Segment Reporting
Revenue from contracts with customers		5.6	9.2	12.1	18.6
Crude services | Oklahoma
Segment Reporting
Revenue from contracts with customers		4.9	3.2	9.4	6.9
Crude services | North Texas
Segment Reporting
Revenue from contracts with customers		0.2	0.2	0.4	0.4
Crude services | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Other services
Segment Reporting
Revenue from contracts with customers		2.4	0.9	4.8	1.7
Other services | Permian
Segment Reporting
Revenue from contracts with customers		1.6	0.2	3.3	0.4
Other services | Louisiana
Segment Reporting
Revenue from contracts with customers		0.3	0.4	0.7	0.8
Other services | Oklahoma
Segment Reporting
Revenue from contracts with customers		0.2	0.1	0.3	0.2
Other services | North Texas
Segment Reporting
Revenue from contracts with customers		0.3	0.2	0.5	0.3
Other services | Corporate
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Midstream services—related parties
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Midstream services—related parties | Permian
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.0
Midstream services—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers		0.0	0.0	0.0	0.1
Midstream services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers		0.0	0.1	0.0	0.1
Midstream services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers		0.8	0.0	1.4	0.0
Midstream services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers		$ (0.8)	(0.1)	(1.4)	(0.2)
NGL services—related parties
Segment Reporting
Revenue from contracts with customers				0.0	0.0
NGL services—related parties | Permian
Segment Reporting
Revenue from contracts with customers				0.0	0.0
NGL services—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers				0.0	0.0
NGL services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers				0.0	0.0
NGL services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers				0.8	1.4
NGL services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers				$ (0.8)	(1.4)
Crude services—related parties
Segment Reporting
Revenue from contracts with customers			0.0		0.0
Crude services—related parties | Permian
Segment Reporting
Revenue from contracts with customers			0.0		0.0
Crude services—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers			0.0		0.0
Crude services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers			0.1		0.1
Crude services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers			0.0		0.0
Crude services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers			$ (0.1)		(0.1)
Other services—related parties
Segment Reporting
Revenue from contracts with customers					0.0
Other services—related parties | Permian
Segment Reporting
Revenue from contracts with customers					0.0
Other services—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers					0.1
Other services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers					0.0
Other services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers					0.0
Other services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers					$ (0.1)

[1] Includes related party cost of sales of $2.5 million and $9.1 million for the three months ended June 30, 2023 and 2022, respectively, and $4.0 million and $19.7 million for the six months ended June 30, 2023 and 2022, respectively.