Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			$ 1,167,187
Equity income, net	$ 48,464	$ 58,666	98,071	$ 110,831
Contributions			5,040	3,508
Distributions			(96,404)	(110,763)
Distributions in excess of cumulative earnings			(25,407)	(21,373)
Balance at end of period	1,148,487		1,148,487
White Cliffs [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			40,753
Equity income, net			438
Contributions			0
Distributions			(147)
Distributions in excess of cumulative earnings			(1,773)
Balance at end of period	39,271		39,271
Rendezvous [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			22,075
Equity income, net			(1,304)
Contributions			0
Distributions			(326)
Distributions in excess of cumulative earnings			(1,063)
Balance at end of period	19,382		19,382
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			96,728
Equity income, net			14,500
Contributions			0
Distributions			(14,605)
Distributions in excess of cumulative earnings			(3,288)
Balance at end of period	93,335		93,335
Texas Express Gathering [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			16,116
Equity income, net			3,111
Contributions			0
Distributions			(3,004)
Distributions in excess of cumulative earnings			0
Balance at end of period	16,223		16,223
Texas Express Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			188,925
Equity income, net			21,552
Contributions			0
Distributions			(21,678)
Distributions in excess of cumulative earnings			(1,457)
Balance at end of period	187,342		187,342
Front Range Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			196,632
Equity income, net			21,318
Contributions			0
Distributions			(21,584)
Distributions in excess of cumulative earnings			(2,195)
Balance at end of period	194,171		194,171
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			149,690
Equity income, net			63
Contributions			255
Distributions			2,950
Distributions in excess of cumulative earnings			(1,565)
Balance at end of period	151,393		151,393
Cactus II [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			171,294
Equity income, net			7,265
Contributions			0
Distributions			(7,349)
Distributions in excess of cumulative earnings			(6,563)
Balance at end of period	164,647		164,647
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			110,441
Equity income, net			11,169
Contributions			0
Distributions			(10,934)
Distributions in excess of cumulative earnings			(815)
Balance at end of period	109,861		109,861
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			20,044
Equity income, net			1,052
Contributions			0
Distributions			(1,052)
Distributions in excess of cumulative earnings			(864)
Balance at end of period	19,180		19,180
Mi Vida [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			51,763
Equity income, net			7,156
Contributions			0
Distributions			(7,209)
Distributions in excess of cumulative earnings			(3,104)
Balance at end of period	48,606		48,606
Ranch Westex [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			979
Equity income, net			4,688
Contributions			0
Distributions			(4,688)
Distributions in excess of cumulative earnings			(2,083)
Balance at end of period	(1,104)	$ 2,900	(1,104)	$ 2,900
Red Bluff Express [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			101,747
Equity income, net			7,063
Contributions			4,785
Distributions			(6,778)
Distributions in excess of cumulative earnings			(637)
Balance at end of period	$ 106,180		$ 106,180