Term of the lessor's leasing arrangement, including all reasonably assured renewal periods in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Name:	glpi_Lessorleasingarrangementstermofcontractincludingallreasonablyassuredrenewalperiods
Namespace Prefix:	glpi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Commitments and Contingencies Commitments and Contingencies (Operating Lease Commitments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Capital Leased Assets [Line Items]
Operating leases, rent expense	$ 2.8	$ 1.5	$ 4.2	$ 2.5
Pinnacle Entertainment, Inc.
Capital Leased Assets [Line Items]
Lessor leasing arrangements, term of contract including all reasonably assured renewal periods			35 years