Impairment Of Long-Lived Assets And Other Lease Charges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2013
Impaired Long-Lived Assets Held and Used [Line Items]
Level 3 assets measured at fair value	$ 0.7
Other lease charges	1.6
Other lease charges, number of restaurants	4
Asset impairment charges, number of restaurants	19
Initial Impairments [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment charges	1.9
Previously Impaired [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment charges	$ 0.9