Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	9 Months Ended	1 Months Ended
	Feb. 28, 2013 IHOP Illinois, Wisconsin, Missouri Restaurant	Sep. 30, 2013 IHOP Illinois, Wisconsin, Missouri Restaurant	Sep. 30, 2013 IHOP Illinois, Wisconsin, Missouri	Jun. 30, 2013 Applebee's Illinois Restaurant	Apr. 30, 2013 Applebee's Illinois Restaurant	Sep. 30, 2013 Applebee's Property Lease Guarantee
Loss Contingencies [Line Items]
Potential liability for guaranteed leases						$ 431.9
Number of franchised restaurants, filed for bankruptcy protection (restraurant)	19				33
Number of restaurants filed for bankruptcy protection likely returned to the company (restraurant)		2
Noncash charge to deferred rental revenue			0.5
Number of franchised restaurants filed for bankruptcy protection and still operated by franchisee under franchise agreement (restraurant)	17
Number of franchised restaurants sold to new franchisee as a result of bankruptcy (restraurant)				15
Number of franchised restaurants closed as a result of bankruptcy (restraurant)				18
Termination payments and other fees received				$ 3.8