Summary of Significant Accounting Policies (Revenue Recognition and Promotional Allowances) (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) property renewaloption
Revenue Recognition and Promotional Allowances
Number of real estate properties | property	34
Penn National Gaming Inc
Revenue Recognition and Promotional Allowances
Number of real estate properties | property	18
Annual rent escalator, percentage	2.00%
Term of contract including all reasonably assured renewal periods (in years)	35 years
Operating lease, initial term of contract (in years)	15 years
Operating leases, number of renewal options | renewaloption	4
Operating lease, renewal term (in years)	5 years
Penn National Gaming Inc | All Properties Under Master Lease, Except Hollywood Casino Columbus and Hollywood Casino Toledo
Revenue Recognition and Promotional Allowances
Frequency property performance-based rent structure is adjusted	5 years
Operating leases, percent of the average net revenues of property used to calculate rent increase	4.00%
Lessor leasing arrangements period used in calculation of average net revenues	5 years
Penn National Gaming Inc | Hollywood Casino Columbus and Hollywood Casino Toledo
Revenue Recognition and Promotional Allowances
Percentage of the change in net revenues of Ohio facilities under the Master Lease during the preceding month used for adjustment in rent structure	20.00%
Pinnacle Entertainment, Inc. Master Lease
Revenue Recognition and Promotional Allowances
Lessor leasing arrangements period used in calculation of average net revenues	2 years
Capital leases, annual rental escalation percentage	2.00%
Capital leases, frequency the property performance-based rent structure is adjusted	2 years
Capital leases, percent of the average annual net revenues of property used to calculate rent increase	4.00%
Term of contract including all reasonably assured renewal periods (in years)	35 years
Operating lease, initial term of contract (in years)	10 years
Operating leases, number of renewal options | renewaloption	5
Operating lease, renewal term (in years)	5 years
Pinnacle Entertainment, Inc. Meadows Lease
Revenue Recognition and Promotional Allowances
Annual rent escalator, percentage	5.00%
Frequency property performance-based rent structure is adjusted	2 years
Operating leases, percent of the average net revenues of property used to calculate rent increase	4.00%
Lessor leasing arrangements period used in calculation of average net revenues	2 years
Annual rent escalator over a period of time contingent upon the achievement of certain rent coverage ratio threshold, percentage	5.00%
Period existing upon achievement of certain rent coverage ratio	10 years
Amount of rent available upon achievement of certain rent coverage ratio | $	$ 31
Percentage at which rent escalation will be reduced upon achievement of certain threshold	2.00%
Operating lease, initial term of contract (in years)	10 years
Casino Queen
Revenue Recognition and Promotional Allowances
Annual rent escalator, percentage	2.00%
Frequency property performance-based rent structure is adjusted	5 years
Operating leases, percent of the average net revenues of property used to calculate rent increase	4.00%
Lessor leasing arrangements period used in calculation of average net revenues	5 years
Term of contract including all reasonably assured renewal periods (in years)	35 years
Operating lease, initial term of contract (in years)	15 years
Operating leases, number of renewal options | renewaloption	4
Operating lease, renewal term (in years)	5 years
Pinnacle Entertainment, Inc.
Revenue Recognition and Promotional Allowances
Number of real estate properties | property	14