Other Information (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Other current assets:
Natural gas and NGLs inventory	$ 7.3	$ 43.4
Prepaid expenses and other	11.7	14.4
Other current assets	19.0	57.8
Other current liabilities:
Accrued interest	69.2	37.1
Accrued wages and benefits, including taxes	16.1	31.5
Accrued ad valorem taxes	17.0	28.5
Capital expenditure accruals	45.0	42.4
Retention liability	8.9	8.7
Short-term lease liability	17.6	21.1
Suspense producer payments	13.8	13.8
Operating expense accruals	9.5	10.8
Other	19.7	12.3
Other current liabilities	$ 216.8	$ 206.2