Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Lease, Cost [Abstract]
Total	$ 124.0	$ 115.9	$ 350.5	$ 329.9
Lessee, Finance Lease, Cost [Abstract]
Total	5.8	5.8	17.5	17.4
General and administrative
Operating Lease, Cost [Abstract]
Rent expense associated with triple net operating leases	109.0	96.3	310.3	271.0
Variable lease cost	0.8	1.0	1.8	2.8
General and administrative | Penn Master Lease
Operating Lease, Cost [Abstract]
Variable lease cost	4.8	2.3	9.5	15.4
Cost of revenue
Operating Lease, Cost [Abstract]
Operating lease cost	3.9	4.2	11.9	13.2
Cost of revenue | Primarily Gaming expense
Operating Lease, Cost [Abstract]
Short-term lease cost	10.3	14.4	26.5	42.9
Interest expense, net
Lessee, Finance Lease, Cost [Abstract]
Interest on lease liabilities	3.8	3.8	11.5	11.5
Financing Obligation, Costs [Abstract]
Interest on financing obligations	103.7	97.6	300.2	293.6
Interest expense, net | Penn Master Lease
Operating Lease, Cost [Abstract]
Variable lease cost	5.0	2.1	10.6	14.1
Depreciation and amortization
Lessee, Finance Lease, Cost [Abstract]
Amortization of ROU assets	$ 2.0	$ 2.0	$ 6.0	$ 5.9