Segment Information - Summarized Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting
Revenue from contracts with customers	$ 1,586.6	$ 1,768.2	$ 4,815.4	$ 5,042.6
Realized gain (loss) on derivatives	3.8	0.9	(3.9)	20.2
Change in fair value of derivatives	18.0	(22.9)	(4.1)	(19.0)
Total revenues	1,608.4	1,746.2	4,807.4	5,043.8
Cost of sales, exclusive of operating expenses and depreciation and amortization	(1,067.6)	(1,244.7)	(3,280.6)	(3,535.6)
Operating expenses	(134.0)	(143.3)	(441.8)	(412.5)
Segment profit	406.8	358.2	1,085.0	1,095.7
Capital expenditures	75.1	136.5	264.7	355.3
Permian
Segment Reporting
Revenue from contracts with customers	726.6	773.8	2,201.9	2,000.0
Realized gain (loss) on derivatives	3.4	(4.4)	(1.0)	(3.0)
Change in fair value of derivatives	2.6	(7.4)	(1.1)	(9.0)
Total revenues	732.6	762.0	2,199.8	1,988.0
Cost of sales, exclusive of operating expenses and depreciation and amortization	(533.7)	(604.3)	(1,668.4)	(1,541.3)
Operating expenses	(56.0)	(55.0)	(206.4)	(156.2)
Segment profit	142.9	102.7	325.0	290.5
Capital expenditures	29.7	82.9	109.9	191.2
Louisiana
Segment Reporting
Revenue from contracts with customers	828.1	978.1	2,595.8	2,924.9
Realized gain (loss) on derivatives	(1.9)	0.0	(2.8)	(0.6)
Change in fair value of derivatives	11.3	(6.0)	(2.6)	3.2
Total revenues	837.5	972.1	2,590.4	2,927.5
Cost of sales, exclusive of operating expenses and depreciation and amortization	(709.8)	(850.0)	(2,210.1)	(2,538.9)
Operating expenses	(28.0)	(35.0)	(85.9)	(100.6)
Segment profit	99.7	87.1	294.4	288.0
Capital expenditures	15.7	23.1	68.6	53.1
Oklahoma
Segment Reporting
Revenue from contracts with customers	269.5	291.5	797.2	868.6
Realized gain (loss) on derivatives	0.1	0.9	(1.9)	4.8
Change in fair value of derivatives	3.0	(4.1)	(0.3)	(3.5)
Total revenues	272.6	288.3	795.0	869.9
Cost of sales, exclusive of operating expenses and depreciation and amortization	(140.1)	(157.1)	(423.4)	(481.6)
Operating expenses	(27.1)	(26.6)	(77.0)	(78.3)
Segment profit	105.4	104.6	294.6	310.0
Capital expenditures	20.5	11.5	57.3	59.3
North Texas
Segment Reporting
Revenue from contracts with customers	177.2	185.7	510.9	534.2
Realized gain (loss) on derivatives	2.2	4.4	1.8	19.0
Change in fair value of derivatives	1.1	(5.4)	(0.1)	(9.7)
Total revenues	180.5	184.7	512.6	543.5
Cost of sales, exclusive of operating expenses and depreciation and amortization	(98.8)	(94.2)	(269.1)	(258.9)
Operating expenses	(22.9)	(26.7)	(72.5)	(77.4)
Segment profit	58.8	63.8	171.0	207.2
Capital expenditures	8.4	17.0	26.0	46.9
Corporate
Segment Reporting
Revenue from contracts with customers	(414.8)	(460.9)	(1,290.4)	(1,285.1)
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	(414.8)	(460.9)	(1,290.4)	(1,285.1)
Cost of sales, exclusive of operating expenses and depreciation and amortization	414.8	460.9	1,290.4	1,285.1
Operating expenses	0.0	0.0	0.0	0.0
Segment profit	0.0	0.0	0.0	0.0
Capital expenditures	0.8	2.0	2.9	4.8
Product sales
Segment Reporting
Revenue from contracts with customers	1,292.3	1,488.1	3,975.9	4,203.7
Product sales | Permian
Segment Reporting
Revenue from contracts with customers	426.4	473.3	1,280.1	1,160.5
Product sales | Louisiana
Segment Reporting
Revenue from contracts with customers	773.2	926.4	2,437.3	2,766.4
Product sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	55.4	65.0	172.1	225.1
Product sales | North Texas
Segment Reporting
Revenue from contracts with customers	37.3	23.4	86.4	51.7
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	172.2	299.7	631.2	860.6
Natural gas sales | Permian
Segment Reporting
Revenue from contracts with customers	6.6	132.9	126.1	338.6
Natural gas sales | Louisiana
Segment Reporting
Revenue from contracts with customers	100.8	101.8	331.3	326.1
Natural gas sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	23.3	42.3	76.0	142.0
Natural gas sales | North Texas
Segment Reporting
Revenue from contracts with customers	41.5	22.7	97.8	53.9
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	658.1	740.5	2,068.9	2,253.5
NGL sales | Permian
Segment Reporting
Revenue from contracts with customers	(9.7)	(4.8)	(22.5)	(4.4)
NGL sales | Louisiana
Segment Reporting
Revenue from contracts with customers	672.4	746.6	2,106.0	2,253.1
NGL sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.5	(2.0)	(1.1)	7.0
NGL sales | North Texas
Segment Reporting
Revenue from contracts with customers	(5.1)	0.7	(13.5)	(2.2)
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	461.1	447.9	1,273.7	1,089.6
Crude oil and condensate sales | Permian
Segment Reporting
Revenue from contracts with customers	429.5	345.2	1,176.5	826.3
Crude oil and condensate sales | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	78.0	0.0	187.2
Crude oil and condensate sales | Oklahoma
Segment Reporting
Revenue from contracts with customers	31.6	24.7	97.2	76.1
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		2.1
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		2.1
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	227.3	247.4	722.5	689.0
Product sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	10.0	5.3	28.6	15.0
Product sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	104.3	126.0	318.6	346.3
Product sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	71.7	81.0	217.7	232.2
Product sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(413.3)	(459.7)	(1,287.4)	(1,282.5)
Natural gas sales—related parties
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Natural gas sales—related parties | Permian
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Natural gas sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0		0.1
Natural gas sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.4		0.4
Natural gas sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	0.0		0.0
Natural gas sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(0.4)		(0.5)
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	227.3	247.4	722.5	689.0
NGL sales—related parties | Louisiana
Segment Reporting
Revenue from contracts with customers	10.0	5.3	28.5	15.0
NGL sales—related parties | Oklahoma
Segment Reporting
Revenue from contracts with customers	103.9	126.0	318.2	346.3
NGL sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	69.0	78.7	208.1	224.4
NGL sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(410.2)	(457.4)	(1,277.3)	(1,274.7)
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	0.0
Crude oil and condensate sales—related parties | North Texas
Segment Reporting
Revenue from contracts with customers	2.7	2.3	9.6	7.8
Crude oil and condensate sales—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(2.7)	(2.3)	(9.6)	(7.8)
Midstream services
Segment Reporting
Revenue from contracts with customers	294.3	280.1	839.5	838.9
Midstream services | Permian
Segment Reporting
Revenue from contracts with customers	72.9	53.1	199.3	150.5
Midstream services | Louisiana
Segment Reporting
Revenue from contracts with customers	44.9	46.4	129.9	143.5
Midstream services | Oklahoma
Segment Reporting
Revenue from contracts with customers	109.8	100.5	306.5	297.2
Midstream services | North Texas
Segment Reporting
Revenue from contracts with customers	66.7	80.1	203.8	247.7
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	192.5	160.3	533.2	470.9
Gathering and transportation | Permian
Segment Reporting
Revenue from contracts with customers	50.8	30.5	132.1	83.1
Gathering and transportation | Louisiana
Segment Reporting
Revenue from contracts with customers	28.7	19.5	81.0	58.2
Gathering and transportation | Oklahoma
Segment Reporting
Revenue from contracts with customers	70.5	60.5	191.0	175.8
Gathering and transportation | North Texas
Segment Reporting
Revenue from contracts with customers	42.5	49.8	129.1	153.8
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	74.6	81.9	225.8	245.1
Processing | Permian
Segment Reporting
Revenue from contracts with customers	14.2	15.3	45.7	43.8
Processing | Louisiana
Segment Reporting
Revenue from contracts with customers	0.5	0.5	1.7	0.9
Processing | Oklahoma
Segment Reporting
Revenue from contracts with customers	36.1	36.2	105.1	107.9
Processing | North Texas
Segment Reporting
Revenue from contracts with customers	23.8	29.9	73.3	92.5
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	15.8	20.6	47.1	65.9
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	15.7	20.5	46.9	65.7
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	0.2	0.2
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	10.0	15.1	27.4	50.0
Crude services | Permian
Segment Reporting
Revenue from contracts with customers	6.7	5.6	16.7	18.6
Crude services | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	5.7	0.1	17.8
Crude services | Oklahoma
Segment Reporting
Revenue from contracts with customers	3.1	3.7	10.0	13.1
Crude services | North Texas
Segment Reporting
Revenue from contracts with customers	0.2	0.1	0.6	0.5
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	1.4	2.2	6.0	7.0
Other services | Permian
Segment Reporting
Revenue from contracts with customers	1.2	1.7	4.8	5.0
Other services | Louisiana
Segment Reporting
Revenue from contracts with customers	0.0	0.2	0.2	0.9
Other services | Oklahoma
Segment Reporting
Revenue from contracts with customers	0.1	0.1	0.4	0.4
Other services | North Texas
Segment Reporting
Revenue from contracts with customers	0.1	0.2	0.6	0.7
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	1.5	1.2	3.0	2.6
Midstream services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	(1.5)	(1.2)	(3.0)	(2.6)
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	1.5	1.2	3.0	2.6
NGL services—related parties | Corporate
Segment Reporting
Revenue from contracts with customers	$ (1.5)	$ (1.2)	$ (3.0)	$ (2.6)