Investments in Unconsolidated Affiliates (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) item mi	Mar. 31, 2022 USD ($)
Investments in unconsolidated affiliates
Balance at beginning of period	$ 652,767
Equity in earnings of unconsolidated affiliates	24,456	$ 23,232
Distributions from unconsolidated affiliates	(34,105)	$ (31,130)
Balance at end of period	$ 643,118
Joint Venture
Equity Method Investments
Ownership percentage	50.00%
Percentage of interest held by joint venture in third party fractionator in Ohio	33.33%
Number of fractionators | item	2
Investments in unconsolidated affiliates
Balance at beginning of period	$ 526,652
Equity in earnings of unconsolidated affiliates	22,630
Distributions from unconsolidated affiliates	(27,010)
Balance at end of period	$ 522,272
Stonewall
Equity Method Investments
Ownership percentage	15.00%
Number of miles of pipeline | mi	67
Investments in unconsolidated affiliates
Balance at beginning of period	$ 126,115
Equity in earnings of unconsolidated affiliates	1,826
Distributions from unconsolidated affiliates	(7,095)
Balance at end of period	$ 120,846