Impairment Of Long-Lived Assets And Other Lease Charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 29, 2013	Sep. 29, 2013
Impaired Long-Lived Assets Held and Used [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 0.6	$ 0.6
Asset Impairment Charges	1.1	2.3
Asset Impairment Charges, Number of Restaurants	6	16
Other Lease Charges		1.6
Other Lease Charges, Number of Restaurants		4
Previously Impaired [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset Impairment Charges	0.2	0.7
Initial Impairments [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset Impairment Charges	$ 0.9	$ 1.6