Revenues (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Contract liabilities	$ 144.7	$ 65.4
ASC 606 Accounts Receivable	$ 225.0	$ 209.7
Revenue, remaining performance obligations, expected timing of satisfaction, period	17 years
Jackalope Gas Gathering Services, LLC
Business Acquisition [Line Items]
Contract liabilities	$ 21.5