Facility Closure Reserves - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended					3 Months Ended	9 Months Ended
	Sep. 29, 2012 United States Store	Sep. 24, 2011 United States Store	Sep. 29, 2012 Retail Segment	Sep. 24, 2011 Retail Segment	Sep. 29, 2012 Retail Segment Legal Settlement	Sep. 29, 2012 Retail Segment Lease liability	Sep. 24, 2011 Retail Segment Lease liability	Sep. 24, 2011 Retail Segment Asset Impairment
Restructuring Cost and Reserve [Line Items]
Charges related to stores closed			$ 25.3	$ 5.6	$ 26.9	$ 1.6	$ 5.4	$ 0.2
Total number of under performing stores	15	6