Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	$ 1,224,813	$ 1,285,717
Other-than-temporary impairment expense	(11,805)	(29,399)
Equity income, net	204,645	226,750	$ 237,518
Contributions	4,435	19,388	128,393
Distributions	(213,516)	(246,637)	(234,572)
Distributions in excess of cumulative earnings	(41,385)	(32,160)	(30,256)
Divestitures		1,154
Balance at end of period	1,167,187	1,224,813	1,285,717
Fort Union [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	0	(610)
Other-than-temporary impairment expense		0
Equity income, net		(544)
Contributions		0
Distributions		0
Distributions in excess of cumulative earnings		0
Divestitures		1,154
Balance at end of period		0	(610)
White Cliffs [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	45,623	45,877
Other-than-temporary impairment expense	0	0
Equity income, net	780	5,474
Contributions	0	993
Distributions	(199)	(4,892)
Distributions in excess of cumulative earnings	(5,451)	(1,829)
Divestitures		0
Balance at end of period	40,753	45,623	45,877
Rendezvous [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	28,198	32,964
Other-than-temporary impairment expense	0	0
Equity income, net	(2,155)	52
Contributions	0	0
Distributions	(1,103)	(1,994)
Distributions in excess of cumulative earnings	(2,865)	(2,824)
Divestitures		0
Balance at end of period	22,075	28,198	32,964
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	98,874	103,036
Other-than-temporary impairment expense	0	0
Equity income, net	33,991	25,913
Contributions	0	0
Distributions	(33,944)	(25,951)
Distributions in excess of cumulative earnings	(2,193)	(4,124)
Divestitures		0
Balance at end of period	96,728	98,874	103,036
Texas Express Gathering [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	16,661	18,199
Other-than-temporary impairment expense	0	0
Equity income, net	4,508	4,483
Contributions	0	0
Distributions	(4,533)	(4,504)
Distributions in excess of cumulative earnings	(520)	(1,517)
Divestitures		0
Balance at end of period	16,116	16,661	18,199
Texas Express Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	195,189	203,556
Other-than-temporary impairment expense	0	0
Equity income, net	36,547	36,351
Contributions	0	0
Distributions	(36,797)	(39,655)
Distributions in excess of cumulative earnings	(6,014)	(5,063)
Divestitures		0
Balance at end of period	188,925	195,189	203,556
Front Range Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	199,881	207,782
Other-than-temporary impairment expense	0	0
Equity income, net	38,280	37,736
Contributions	750	3,670
Distributions	(38,275)	(39,254)
Distributions in excess of cumulative earnings	(4,004)	(10,053)
Divestitures		0
Balance at end of period	196,632	199,881	207,782
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	156,729	161,665
Other-than-temporary impairment expense	0	0
Equity income, net	4,969	35,725
Contributions	349	428
Distributions	(6,428)	(41,070)
Distributions in excess of cumulative earnings	(5,929)	(19)
Divestitures		0
Balance at end of period	149,690	156,729	161,665
Cactus II [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	173,921	172,165
Other-than-temporary impairment expense	0	0
Equity income, net	18,237	22,193
Contributions	3,336	13,645
Distributions	(18,404)	(31,982)
Distributions in excess of cumulative earnings	(5,796)	(2,100)
Divestitures		0
Balance at end of period	171,294	173,921	172,165
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	111,717	112,855
Other-than-temporary impairment expense	0	0
Equity income, net	30,878	26,255
Contributions	0	0
Distributions	(31,403)	(27,393)
Distributions in excess of cumulative earnings	(751)	0
Divestitures		0
Balance at end of period	110,441	111,717	112,855
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	20,867	21,783
Other-than-temporary impairment expense	0	0
Equity income, net	2,188	2,047
Contributions	0	0
Distributions	(2,188)	(2,047)
Distributions in excess of cumulative earnings	(823)	(916)
Divestitures		0
Balance at end of period	20,044	20,867	21,783
Mi Vida [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	55,031	57,807
Other-than-temporary impairment expense	0	0
Equity income, net	10,491	10,764
Contributions	0	0
Distributions	(10,596)	(11,563)
Distributions in excess of cumulative earnings	(3,163)	(1,977)
Divestitures		0
Balance at end of period	51,763	55,031	57,807
Ranch Westex [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	18,898	46,678
Other-than-temporary impairment expense	(11,805)	(29,399)
Equity income, net	12,407	12,127
Contributions	0	0
Distributions	(15,657)	(9,802)
Distributions in excess of cumulative earnings	(2,864)	(706)
Divestitures		0
Balance at end of period	979	18,898	46,678
Red Bluff Express [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	103,224	101,960
Other-than-temporary impairment expense	0	0
Equity income, net	13,524	8,174
Contributions	0	652
Distributions	(13,989)	(6,530)
Distributions in excess of cumulative earnings	(1,012)	(1,032)
Divestitures		0
Balance at end of period	$ 101,747	$ 103,224	$ 101,960