Restructuring related costs included in Selling, General & Administrative expenses on Consolidated Statements of Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 830		$ 11,200
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	830		10,490
Asset impairment and other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs			$ 710