Business Segment Information (Schedule Of Reconciliation Of Segment Expenditures For Property, Plant And Equipment To Condensed Consolidated Total Expenditures For Property, Plant And Equipment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate expenditures for property, plant and equipment	$ 17,199	$ 12,176	$ 46,092	$ 27,308
Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate expenditures for property, plant and equipment	14,596	12,166	39,140	27,144
Corporate [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate expenditures for property, plant and equipment	$ 2,603	$ 10	$ 6,952	$ 164