Segment Information - Summarized Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting
Revenue from contracts with customers	$ 1,551.9	$ 1,518.8	$ 3,228.8	$ 3,274.4
Realized gain (loss) on derivatives	(4.8)	6.0	(7.7)	19.3
Change in fair value of derivatives	4.0	5.3	(22.1)	3.9
Total revenues	1,551.1	1,530.1	3,199.0	3,297.6
Cost of sales, exclusive of operating expenses and depreciation and amortization	(1,062.6)	(1,019.0)	(2,213.0)	(2,290.9)
Operating expenses	(155.2)	(136.8)	(307.8)	(269.2)
Segment profit	333.3	374.3	678.2	737.5
Capital expenditures	86.2	104.7	189.6	218.8
Permian
Segment Reporting
Revenue from contracts with customers	721.1	627.3	1,475.3	1,226.2
Realized gain (loss) on derivatives	2.4	5.4	(4.4)	1.4
Change in fair value of derivatives	(1.3)	(7.9)	(3.7)	(1.6)
Total revenues	722.2	624.8	1,467.2	1,226.0
Cost of sales, exclusive of operating expenses and depreciation and amortization	(552.6)	(479.9)	(1,134.7)	(937.0)
Operating expenses	(76.5)	(53.1)	(150.4)	(101.2)
Segment profit	93.1	91.8	182.1	187.8
Capital expenditures	31.6	51.6	80.2	108.3
Louisiana
Segment Reporting
Revenue from contracts with customers	827.9	841.1	1,767.7	1,946.8
Realized gain (loss) on derivatives	(7.3)	(7.8)	(0.9)	(0.6)
Change in fair value of derivatives	5.6	18.2	(13.9)	9.2
Total revenues	826.2	851.5	1,752.9	1,955.4
Cost of sales, exclusive of operating expenses and depreciation and amortization	(710.8)	(715.0)	(1,500.3)	(1,688.9)
Operating expenses	(31.1)	(32.0)	(57.9)	(65.6)
Segment profit	84.3	104.5	194.7	200.9
Capital expenditures	21.3	17.7	52.9	30.0
Oklahoma
Segment Reporting
Revenue from contracts with customers	263.1	264.3	527.7	577.1
Realized gain (loss) on derivatives	(1.0)	1.9	(2.0)	3.9
Change in fair value of derivatives	0.8	2.0	(3.3)	0.6
Total revenues	262.9	268.2	522.4	581.6
Cost of sales, exclusive of operating expenses and depreciation and amortization	(135.5)	(130.5)	(283.3)	(324.5)
Operating expenses	(23.9)	(27.0)	(49.9)	(51.7)
Segment profit	103.5	110.7	189.2	205.4
Capital expenditures	25.0	22.1	36.8	47.8
North Texas
Segment Reporting
Revenue from contracts with customers	165.1	167.6	333.7	348.5
Realized gain (loss) on derivatives	1.1	6.5	(0.4)	14.6
Change in fair value of derivatives	(1.1)	(7.0)	(1.2)	(4.3)
Total revenues	165.1	167.1	332.1	358.8
Cost of sales, exclusive of operating expenses and depreciation and amortization	(89.0)	(75.1)	(170.3)	(164.7)
Operating expenses	(23.7)	(24.7)	(49.6)	(50.7)
Segment profit	52.4	67.3	112.2	143.4
Capital expenditures	7.1	11.8	17.6	29.9
Corporate
Segment Reporting
Revenue from contracts with customers	(425.3)	(381.5)	(875.6)	(824.2)
Realized gain (loss) on derivatives	0.0	0.0	0.0	0.0
Change in fair value of derivatives	0.0	0.0	0.0	0.0
Total revenues	(425.3)	(381.5)	(875.6)	(824.2)
Cost of sales, exclusive of operating expenses and depreciation and amortization	425.3	381.5	875.6	824.2
Operating expenses	0.0	0.0	0.0	0.0
Segment profit	0.0	0.0	0.0	0.0
Capital expenditures	1.2	1.5	2.1	2.8
Product sales
Segment Reporting
Revenue from contracts with customers	1,278.6	1,239.3	2,683.6	2,715.6
Product sales | Permian
Segment Reporting
Revenue from contracts with customers	419.5	370.8	853.7	687.2
Product sales | Louisiana
Segment Reporting
Revenue from contracts with customers	776.4	793.7	1,664.1	1,840.0
Product sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	54.0	60.0	116.7	160.1
Product sales | North Texas
Segment Reporting
Revenue from contracts with customers	28.7	14.8	49.1	28.3
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	177.5	218.5	459.0	560.9
Natural gas sales | Permian
Segment Reporting
Revenue from contracts with customers	15.3	76.4	119.5	205.7
Natural gas sales | Louisiana
Segment Reporting
Revenue from contracts with customers	110.9	92.5	230.5	224.3
Natural gas sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	19.9	32.9	52.7	99.7
Natural gas sales | North Texas
Segment Reporting
Revenue from contracts with customers	31.4	16.7	56.3	31.2
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	655.1	647.1	1,410.8	1,513.0
NGL sales | Permian
Segment Reporting
Revenue from contracts with customers	(6.2)	0.0	(12.8)	0.4
NGL sales | Louisiana
Segment Reporting
Revenue from contracts with customers	665.5	648.6	1,433.6	1,506.5
NGL sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	(0.6)	0.4	(1.6)	9.0
NGL sales | North Texas
Segment Reporting
Revenue from contracts with customers	(3.6)	(1.9)	(8.4)	(2.9)
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	445.1	373.7	812.6	641.7
Crude oil and condensate sales | Permian
Segment Reporting
Revenue from contracts with customers	410.4	294.4	747.0	481.1
Crude oil and condensate sales | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	52.6	0.0	109.2
Crude oil and condensate sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	34.7	26.7	65.6	51.4
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
Other
Segment Reporting
Revenue from contracts with customers	0.9		1.2
Other | Permian
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Other | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Other | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Other | North Texas
Segment Reporting
Revenue from contracts with customers	0.9		1.2
Other | Corporate
Segment Reporting
Revenue from contracts with customers	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	237.6	204.1	495.2	441.6
Product sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	9.0	5.3	18.6	9.7
Product sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	105.6	102.3	214.3	220.3
Product sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	72.1	69.0	146.0	151.2
Product sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(424.3)	(380.7)	(874.1)	(822.8)
Product sales, Natural gas sales—related parties
Segment Reporting
Revenue from contracts with customers			0.0
Product sales, Natural gas sales—related parties | Permian
Segment Reporting
Revenue from contracts with customers			0.0
Product sales, Natural gas sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers			0.1
Product sales, Natural gas sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers			0.0
Product sales, Natural gas sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers			0.0
Product sales, Natural gas sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers			(0.1)
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	237.6	204.1	495.2	441.6
NGL sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	9.0	5.3	18.5	9.7
NGL sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	105.6	102.3	214.3	220.3
NGL sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	68.5	66.2	139.1	145.7
NGL sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(420.7)	(377.9)	(867.1)	(817.3)
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	0.0
Crude oil and condensate sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	3.6	2.8	6.9	5.5
Crude oil and condensate sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(3.6)	(2.8)	(6.9)	(5.5)
Midstream services
Segment Reporting
Revenue from contracts with customers	273.3	279.5	545.2	558.8
Midstream services | Permian
Segment Reporting
Revenue from contracts with customers	64.0	52.4	126.4	97.4
Midstream services | Louisiana
Segment Reporting
Revenue from contracts with customers	42.5	42.1	85.0	97.1
Midstream services | Oklahoma
Segment Reporting
Revenue from contracts with customers	103.5	102.0	196.7	196.7
Midstream services | North Texas
Segment Reporting
Revenue from contracts with customers	63.3	83.0	137.1	167.6
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	175.2	160.4	340.7	310.6
Gathering and transportation | Permian
Segment Reporting
Revenue from contracts with customers	41.6	29.3	81.3	52.6
Gathering and transportation | Louisiana
Segment Reporting
Revenue from contracts with customers	27.9	18.7	52.3	38.7
Gathering and transportation | Oklahoma
Segment Reporting
Revenue from contracts with customers	64.7	60.5	120.5	115.3
Gathering and transportation | North Texas
Segment Reporting
Revenue from contracts with customers	41.0	51.9	86.6	104.0
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	72.4	81.5	151.2	163.2
Processing | Permian
Segment Reporting
Revenue from contracts with customers	14.5	14.5	31.5	28.5
Processing | Louisiana
Segment Reporting
Revenue from contracts with customers	0.6	0.1	1.2	0.4
Processing | Oklahoma
Segment Reporting
Revenue from contracts with customers	35.4	36.4	69.0	71.7
Processing | North Texas
Segment Reporting
Revenue from contracts with customers	21.9	30.5	49.5	62.6
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	13.9	17.5	31.3	45.3
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	13.9	17.4	31.2	45.2
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	0.0	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	9.6	17.7	17.4	34.9
Crude services | Permian
Segment Reporting
Revenue from contracts with customers	6.2	7.0	10.0	13.0
Crude services | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	5.6	0.1	12.1
Crude services | Oklahoma
Segment Reporting
Revenue from contracts with customers	3.2	4.9	6.9	9.4
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	2.2	2.4	4.6	4.8
Other services | Permian
Segment Reporting
Revenue from contracts with customers	1.7	1.6	3.6	3.3
Other services | Louisiana
Segment Reporting
Revenue from contracts with customers	0.1	0.3	0.2	0.7
Other services | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.2	0.2	0.3	0.3
Other services | North Texas
Segment Reporting
Revenue from contracts with customers	0.2	0.3	0.5	0.5
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	0.0
Midstream services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.0	0.0	0.0	0.0
Midstream services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	1.0	0.8	1.5	1.4
Midstream services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(1.0)	(0.8)	(1.5)	(1.4)
NGL services—related parties
Segment Reporting
Revenue from contracts with customers	0.0	0.0	0.0	0.0
NGL services—related parties | Permian
Segment Reporting
Revenue from contracts with customers	0.0	0.0	0.0	0.0
NGL services—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	0.0	0.0	0.0
NGL services—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.0	0.0	0.0	0.0
NGL services—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	1.0	0.8	1.5	1.4
NGL services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	$ (1.0)	$ (0.8)	$ (1.5)	$ (1.4)