Goodwill And Other Intangibles - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 01, 2011	Jun. 30, 2012	Jul. 01, 2011
Goodwill And Other Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 5.8	$ 6.3	$ 11.7	$ 12.6
Estimated amortization expense, 2012	24		24
Estimated amortization expense, 2013	22		22
Estimated amortization expense, 2014	22		22
Estimated amortization expense, 2015	22		22
Estimated amortization expense, 2016	$ 22		$ 22