Subsequent Events (Details) (Applebee's [Member], Virginia)	May 01, 2012 Restaurants
Applebee's [Member] \| Virginia
Subsequent Event [Line Items]
Number of Company Operated Restaurants to be Refranchised and Related Assets Sold	39

Number of Company Operated Restaurants to be Refranchised and Related Assets Sold

No definition available.

Name:	din_NumberOfCompanyOperatedRestaurantsToBeRefranchisedAndRelatedAssetsSold
Namespace Prefix:	din_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant