Leases - Future Minimum Lease Commitments (Details) - USD ($) $ in Millions	Dec. 31, 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
2021	$ 422.6
2022	412.4
2023	399.9
2024	383.7
2025	380.7
Thereafter	7,779.9
Total lease payments	9,779.2
Less: Imputed interest	(5,286.1)
Present value of future lease payments	4,493.1
Less: Current portion of lease obligations	(127.4)
Long-term portion of lease obligations	4,365.7
Finance Leases
2021	21.7
2022	21.6
2023	20.8
2024	16.7
2025	16.7
Thereafter	376.7
Total lease payments	474.2
Present value of future lease payments	(254.8)
Present value of future lease payments	219.4
Less: Current portion of lease obligations	(6.9)
Long-term portion of lease obligations	212.5
Financing Obligations
2021	370.3
2022	370.3
2023	370.4
2024	370.4
2025	370.5
Thereafter	9,095.3
Total lease payments	10,947.2
Less: Imputed interest	(6,814.8)
Present value of future lease payments	4,132.4
Less: Current portion of lease obligations	(36.0)	$ (40.5)
Long-term portion of lease obligations	$ 4,096.4	$ 4,102.2

Financing Obligation

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Financing Obligation, Current

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Financing Obligation, Noncurrent

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Financing Obligation, Payment, Due [Abstract]

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Financing Obligation, Payments, Due Year Four

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Financing Obligation, Payments, Due Year One

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Financing Obligation, Payments, Due Year Three

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Financing Obligation, Payments, Due Year Two

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Financing Obligation, Undiscounted Excess Amount

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Indicates line item in statement of financial position that includes current finance lease liability.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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