Income Taxes - Summary of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
Federal net operating loss carryforward	$ 341.4	$ 67.9
State net operating loss carryforward	44.8	11.7
Total deferred tax assets	386.2	79.6
Deferred tax liabilities:
Property, equipment, and intangible assets	(354.0)	(440.6)
Other	0.0	(1.4)
Total deferred tax liabilities	(354.0)	(442.0)
Deferred tax asset (liability), net	$ 32.2
Deferred tax asset (liability), net		$ (362.4)