Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 18, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-36124
Entity Registrant Name	Gaming and Leisure Properties, Inc.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	46-2116489
Entity Address, Address Line One	845 Berkshire Blvd., Suite 200
Entity Address, City or Town	Wyomissing
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19610
City Area Code	610
Local Phone Number	401-2900
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	GLPI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 7.1
Entity Common Stock, Shares Outstanding		232,780,891
Documents Incorporated by Reference	Portions of the registrant's definitive proxy statement for its 2021 annual meeting of shareholders (when it is filed) will be incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001575965
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY