Leases - Future Minimum Lease Commitments (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	penn:LeaseLiabilityCurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	penn:LeaseLiabilityCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	penn:LeaseLiabilityNoncurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	penn:LeaseLiabilityNoncurrent
Operating Leases
2020 (excluding the nine months ended September 30, 2020)	$ 105.4
2021	412.7
2022	404.3
2023	398.7
2024	382.4
Thereafter	8,158.4
Total lease payments	9,861.9
Less: Imputed interest	(5,360.3)
Present value of future lease payments	4,501.6
Less: Current portion of lease obligations	(120.4)
Long-term portion of lease obligations	4,381.2
Finance Leases
2020 (excluding the nine months ended September 30, 2020)	5.4
2021	21.7
2022	21.6
2023	20.8
2024	16.7
Thereafter	393.5
Total lease payments	479.7
Less: Imputed interest	(258.6)
Present value of future lease payments	221.1
Less: Current portion of lease obligations	(6.8)
Long-term portion of lease obligations	214.3
Financing Obligations
2020 (excluding the nine months ended September 30, 2020)	91.8
2021	367.3
2022	367.3
2023	367.3
2024	367.3
Thereafter	9,270.6
Total lease payments	10,831.6
Less: Imputed interest	(6,720.8)
Present value of future lease payments	4,110.8
Less: Current portion of lease obligations	(35.3)	$ (40.5)
Long-term portion of lease obligations	$ 4,075.5	$ 4,102.2