Basis of Presentation (Details)	3 Months Ended		9 Months Ended
	Sep. 27, 2011 Restaurant	Sep. 28, 2010 Restaurant	Sep. 27, 2011 Supplier Year Restaurant	Sep. 28, 2010 Restaurant
Basis of Presentation
Threshold percentage of ownership for consolidated subsidiaries	50.00%	50.00%	50.00%	50.00%
Percentage of ownership interest in unconsolidated affiliate franchise restaurants, low end of range	5.00%	5.00%	5.00%	5.00%
Percentage of ownership interest in unconsolidated affiliate franchise restaurants, high end of range	10.00%	10.00%	10.00%	10.00%
Number of unconsolidated affiliate franchise restaurants	22	21	22	21