Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenue from customers	$ 1,996,665
Total revenues and other	1,990,276	$ 2,248,356	$ 1,804,270
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers	1,609,245
Total revenues and other	1,609,245
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers	85,553
Total revenues and other	85,553
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers	301,867
Total revenues and other	293,992
Commodity Price Swap Agreement [Member]
Disaggregation of Revenue [Line Items]
Revenue from other than customers	(7,875)
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from other than customers	$ 1,486