Represents the number of lease renewal options of the lessor's leasing arrangement.

No definition available.

Name:	glpi_LessorLeasingArrangementsOperatingLeasesNumberOfRenewalOptions
Namespace Prefix:	glpi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Lease, Rent Escalator, After Year 9

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeaseRentEscalatorAfterYear9
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating Lease, rent Escalator, Year 2 through 5

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeaseRentEscalatorYear2Through5
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating Lease, Rent Escalator, Year 6 and 7

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeaseRentEscalatorYear6And7
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating Lease, Rent Escalator, Year 7 and Year 8

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeaseRentEscalatorYear7AndYear8
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating Lease, Rent Escalator, Year 8 and After

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeaseRentEscalatorYear8AndAfter
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating leases, percentage of the average net revenues of property(s) used to calculate rent increase

+ References

No definition available.

+ Details

Name:	glpi_OperatingLeasesPercentageOfTheAverageNetRevenuesOfPropertysUsedToCalculateRentIncrease
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating leases, annual rental escalation percentage

+ References

No definition available.

+ Details

Name:	glpi_Operatingleasesannualrentalescalationpercentage
Namespace Prefix:	glpi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	glpi_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems
Namespace Prefix:	glpi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

+ Details

Name:	us-gaap_LessorOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for the purchase of amounts due from customers, clients, lessees, borrowers, or others under the terms of its agreements therewith.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsToAcquireFinanceReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_CounterpartyNameAxis=glpi_BoydGamingCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_BoydGamingCorporationMasterLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_CaesarsMasterLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_AmendedAndRestatedCaesarsMasterLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_LumirePlaceLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_LumierePlaceLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_AmendedPinnacleEntertainmentInc.MasterLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=glpi_BelterraParkLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business and Operations - Pinnacle, Caesars and Horseshoe Leases (Details) $ in Millions				3 Months Ended
	Sep. 29, 2020	Jun. 15, 2020	Oct. 15, 2018 USD ($)	Jun. 30, 2026 property	Oct. 01, 2018 renewaloption
Boyd Gaming Corporation \| Real Estate Loan
Business and Operations
Payment to acquire finance receivables \| $			$ 57.7
Boyd Gaming Corporation Master Lease
Business and Operations
Operating leases, number of renewal options				4
Operating lease, renewal term (in years)				5 years
Caesars Master Lease
Business and Operations
Operating leases, number of renewal options \| renewaloption					4
Operating lease, renewal term (in years)					5 years
Amended and Restated Caesars Master Lease
Business and Operations
Rent escalator, year 7 and 8		1.75%
Rent escalator after year 9		2.00%
Lumière Place Lease
Business and Operations
Operating lease, renewal term (in years)					5 years
Lumiere Place Lease
Business and Operations
Operating Lease, rent Escalator, Year 2 through 5				125.00%
Operating Lease, Rent Escalator, Year 6 and 7	1.75%
Operating Lease, Rent Escalator, Year 8 and After	200.00%
Amended Pinnacle Entertainment, Inc. Master Lease
Business and Operations
Operating lease, renewal term (in years)				5 years
Operating leases, percentage of the average net revenues of property(s) used to calculate rent increase				4.00%
Annual rent escalator, percentage				2.00%
Belterra Park Lease
Business and Operations
Operating leases, number of renewal options				4
Operating lease, renewal term (in years)				5 years
Operating leases, percentage of the average net revenues of property(s) used to calculate rent increase				4.00%
Annual rent escalator, percentage				2.00%