Commitment and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 26, 2009
Business Interruption Loss [Line Items]
Pretax gains recorded	$ 19.0
Fire at Hemingway, SC Facility [Member] | Insurance Settlement [Member]
Business Interruption Loss [Line Items]
Proceeds from insurance settlement	18.9
Total insurance settlement	61.5
Pretax gains recorded	19.0
Proceeds from insurance settlement netted against capital expenditures	$ 8.2