Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 184.6
Impairment	(184.6)
Goodwill, end of period	0.0	$ 1,123.7
Operating Segments | Permian
Goodwill [Roll Forward]
Goodwill, beginning of period	184.6
Impairment	(184.6)
Goodwill, end of period	0.0	184.6
Operating Segments | North Texas
Goodwill [Roll Forward]
Goodwill, beginning of period	0.0
Impairment	0.0
Goodwill, end of period	0.0	125.7
Operating Segments | Oklahoma
Goodwill [Roll Forward]
Goodwill, beginning of period	0.0
Impairment	0.0
Goodwill, end of period	0.0	813.4
Operating Segments | Louisiana
Goodwill [Roll Forward]
Goodwill, beginning of period	0.0
Impairment	0.0	186.5
Goodwill, end of period	0.0	0.0
Corporate
Goodwill [Roll Forward]
Goodwill, beginning of period	0.0
Impairment	0.0
Goodwill, end of period	$ 0.0	$ 0.0