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Summary of Significant Accounting Policies Unredeemed Gift Cards (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Accounting Policies [Abstract]
Gift Card Liability, Current	$ 18.7	$ 15.4	$ 14.4
Revenue Recognition, Gift Cards, Breakage	$ 0.8	$ 0.6	$ 0.5

- Definition

The amount of breakage recognized related to unredeemed gift cards. Breakage occurs when a customer pays in advance of vendor performance and does not demand full performance for various reasons.

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