Intangible And Other Assets (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Finite-Lived Intangible Assets [Line Items]
Accumulated impairment losses	$ 0		$ 0
Weighted-average amortization period (in years)			13 years
Aggregate amortization expense	6.6	6.2	19.6	18.6
Estimated annual amortization expense for fiscal period 2012	25.9		25.9
Estimated annual amortization expense for fiscal period 2013	21.1		21.1
Estimated annual amortization expense for fiscal period 2014	14.9		14.9
Estimated annual amortization expense for fiscal period 2015	10.7		10.7
Estimated annual amortization expense for fiscal period 2016	9.3		9.3
Estimated annual amortization expense for fiscal period 2017	$ 9.1		$ 9.1
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period (in years)			16 years
Customer relationship contractual term, minimum (in years)			3
Customer relationship contractual term, maximum (in years)			5