Acquisitions and Purchase Accounting (Weighted Average Amortization for Intangible Assets) (Details)	12 Months Ended
	Dec. 25, 2012
Weighted average amortization period for all intangible assets
Weighted average amortization period	41 years
Franchise rights [Member]
Weighted average amortization period for all intangible assets
Weighted average amortization period	41 years
Favorable leasehold interests [Member]
Weighted average amortization period for all intangible assets
Weighted average amortization period	15 years
Unfavorable leasehold interests [Member]
Weighted average amortization period for all intangible assets
Weighted average amortization period	9 years