Investments in Unconsolidated Affiliates (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) item mi	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) item mi	Sep. 30, 2022 USD ($)
Investments in unconsolidated affiliates
Balance at beginning of period			$ 652,767
Additional investments			262
Equity in earnings of unconsolidated affiliates	$ 27,397	$ 24,411	77,825	$ 70,467
Distributions from unconsolidated affiliates			(94,900)	(90,470)
Return of investment in unconsolidated affiliate				$ (17,000)
Balance at end of period	$ 635,954		$ 635,954
Joint Venture
Equity Method Investments
Ownership percentage	50.00%		50.00%
Percentage of interest held by joint venture in third party fractionator in Ohio			33.33%
Number of fractionators | item	2		2
Investments in unconsolidated affiliates
Balance at beginning of period			$ 526,652
Equity in earnings of unconsolidated affiliates			72,539
Distributions from unconsolidated affiliates			(82,120)
Balance at end of period	$ 517,071		$ 517,071
Stonewall
Equity Method Investments
Ownership percentage	15.00%		15.00%
Number of miles of pipeline | mi	67		67
Investments in unconsolidated affiliates
Balance at beginning of period			$ 126,115
Additional investments			262
Equity in earnings of unconsolidated affiliates			5,286
Distributions from unconsolidated affiliates			(12,780)
Balance at end of period	$ 118,883		$ 118,883