Leases - Variable Lease Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessee, Lease, Cost [Line Items]
Total variable expenses	$ 0.8	$ 1.6
General and administrative
Lessee, Lease, Cost [Line Items]
Total variable expenses	0.2	0.3
Interest expense, net
Lessee, Lease, Cost [Line Items]
Total variable expenses	0.0	0.0
Penn Master Lease
Lessee, Lease, Cost [Line Items]
Total variable expenses	6.5	13.1
Penn Master Lease | General and administrative
Lessee, Lease, Cost [Line Items]
Total variable expenses	3.1	6.8
Penn Master Lease | Interest expense, net
Lessee, Lease, Cost [Line Items]
Total variable expenses	$ 3.4	$ 6.3