Gross Carrying Amount and Accumulated Amortization of Intangible Assets Subject to Amortization (Parenthetical) (Detail) (Leasehold improvements, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011
Leasehold improvements
Finite-Lived Intangible Assets [Line Items]
Intangible reclass to restructuring	$ 0.5