Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from customers		$ 719,077	$ 625,147	$ 2,023,613	$ 1,949,825
Revenue from other than customers, other		248	100	577	838
Total revenues and other	[1]	763,840	679,044	2,157,945	2,125,112
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		605,967	582,725	1,707,987	1,806,097
Total revenues and other		650,482	636,522	1,841,742	1,980,546
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		28,812	12,316	88,267	35,237
Total revenues and other		28,812	12,316	88,267	35,237
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		84,298	30,106	227,359	108,491
Total revenues and other		84,298	30,106	227,359	108,491
Lease Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from other than customers		$ 44,515	$ 53,797	$ 133,755	$ 174,449

[1] Total revenues and other includes related-party amounts of $431.7 million and $1.2 billion for the three and nine months ended September 30, 2021, respectively, and $455.6 million and $1.4 billion for the three and nine months ended September 30, 2020, respectively. See Note 6.