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Summary of Significant Accounting Policies (Concentration of Credit Risk) (Details)	Dec. 31, 2025 state property
Cash and Cash Equivalents [Abstract]
Number of facilities whose real estate property is included in entity portfolio | property	(69)
Number of states across which the portfolio of properties is diversified | state	20

X

- Definition

Represents the number of facilities whose real property is included in the entity's portfolio as of the balance sheet date.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_CashAndCashEquivalentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant