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v3.21.1

Organization and Basis of Presentation (Details) member in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Feb. 29, 2020 | Mar. 31, 2021 state property member
Subsequent Event [Line Items] |  |
Number of members | member |  | 20
Number of properties the entity owned, managed, or had ownership interests in | property |  | 41
Number of states in which the entity operates | state |  | 19
Barstool Sports, Inc |  |
Subsequent Event [Line Items] |  |
Ownership interest |  | 36.00%
Investment acquired, percent, delayed basis | 1.00% | 1.00%

X
- Definition Customer Loyalty Program, Number Of Members + References No definition available. + Details
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Namespace Prefix: | penn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equity Method Investment Acquired, Percentage of Shares Acquired on A Delayed Basis + References No definition available. + Details
Name: | penn_EquityMethodInvestmentAcquiredPercentageOfSharesAcquiredOnADelayedBasis
Namespace Prefix: | penn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Number Of Properties + References No definition available. + Details
Name: | penn_NumberOfProperties
Namespace Prefix: | penn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | instant

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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=penn_BarstoolSportsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |