Subsequent Events (Details) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified	1 Months Ended
Jul. 31, 2014
Subsequent Event [Member]
Subsequent events
Anticipated incurance proceeds	$ 5.7

The anticipated cash inflow from the amounts received by the insured under the terms of an insurance contract settlement.

No definition available.

Name:	penn_ProceedsFromInsuranceSettlement
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration