Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2013	Jun. 30, 2013	Jul. 01, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate for continuing operations		38.00%	40.50%
U.S. Federal statutory rate		35.00%	35.00%
Reserve for uncertain tax positions		$ 1.4		$ 2.3
Reduction in reserves for uncertain tax positions	0.9
Settlement by cash payments		0.6
Reserves for interest and penalties related to uncertain tax positions		$ 0.2		$ 0.4