Assets Held for Sale Assets Held for Sale (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						12 Months Ended
	Dec. 31, 2012 agreement	Dec. 31, 2012 Virginia Restaurants	Dec. 31, 2012 Missouri and Indiana Restaurants	Dec. 31, 2012 Michigan Restaurants	Dec. 31, 2012 Applebee's Restaurants parcel	Dec. 31, 2011 Applebee's parcel	Dec. 31, 2011 Company Operated Applebee's Memphis, Tennessee Restaurants
Assets Held For Sale [Line Items]
Parcels of land with refranchised restaurants					1	1
Parcels of land intended for future restaurant development					2	3
Number of agreements for refranchising and sale of related restaurant assets	3
Company operated restaurants franchised and sale of related restaurant assets		39	33	65	137
Assets transferred to held for sale	$ 54.1
Assets sold	$ 60.0
Company operated restaurants sold							17
Parcels of land transferred out of assets held for sale					1